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文档下载 免费文档下载 http://www.wendangwang.com/ 本文档下载自文档下载网,内容可能不完整,您可以点击以下网址继续阅读或下载: http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a ADA4853-1AKSZ-R7 中文资料 元器件交易网 www.cecb2b.com Low Power, Rail-to-Rail Output, Video Op Amp with Ultralow Power Disable ADA4853-1/ADA4853-2/ADA4853-3 FEATURES Ultralow power-down current: 0.1 μA Low quiescent current: 1.4 mA/amplifier Ideal for standard definition video High speed 100 MHz, ?3 dB bandwidth 120 V/μs slew rate 0.5 dB flatness: 22 MHz Differential gain: 0.20% Differential phase: 0.10° Single-supply operation Rail-to-rail output Output swings to within 200 mV of either rail Low voltage offset: 1 mV Wide supply range: 2.65 V to 5 V 文档下载 免费文档下载 http://www.wendangwang.com/ APPLICATIONS Portable multimedia players Video cameras Digital still cameras Consumer video GENERAL DESCRIPTION The ADA4853-1/ADA4853-2/ADA4853-3 are low power, low cost, high speed, rail-to-rail output op amps with ultralow power disable that are ideal for portable consumer electronics. Despite their low price, the ADA4853-1/ADA4853-2/http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aADA48 53-3 provide excellent overall performance and versatility. The 100 MHz, ?3 dB bandwidth and 120 V/μs slew rate make these amplifiers well-suited for many general-purpose, high speed applications. The ADA4853-1/ADA4853-2/ADA4853-3 voltage feedback op amps are designed to operate at supply voltages as low as 2.65 V and up to 5 V using only 1.4 mA of supply current per amplifier. To further reduce power consumption, the amplifiers are equipped with a power-down mode that lowers the supply current to less than 1.5 μA maximum, making them ideal in battery-powered applications. The ADA4853-1/ADA4853-2/ADA4853-3 provide users with a true single-supply capability, allowing input signals to extend 200 mV below the negative rail and to within 1.2 V of the positive rail. On the output, the amplifiers can swing within 200 mV of either supply rail. Rev. B 文档下载 免费文档下载 http://www.wendangwang.com/ Information furnished by Analog Devicehttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7as is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. PIN CONFIGURATIONS 1 2C C DDNNPP6543VOUT1 VS–IN1V VOUT2 IN1–IN2–V–VS IN2 1 0CCCC6 5-0NNNN-04(NottoScale) 848–850NC = NO CONNECT 58 文档下载 免费文档下载 http://www.wendangwang.com/ 0Figure 1. 6-Lead SC70 – Figure 2. 16-Lead LFCSP_VQ – ADA4853-3 DISABLE 1TOUTS UVON N VII – DISABLE 26543DISABLE 3 V S SDISABLE 1–VS INhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aDISABLE 2 INDISABLE 3–IN–IN8 文档下载 免费文档下载 http://www.wendangwang.com/ 5 VSVOUT VOUT 0OUT -488507 5NN-0IIUTS4 –OV–88V50 Figure 3. 16-Lead LFCSP_VQ Figure 4. 16-Lead TSSOP With their combination of low price, excellent differential gain (0.2%), differential phase (0.10°), and 0.5 dB flatness out to 22 MHz, these amplifiers are ideal for video applications. The ADA4853-1 is available in a 6-lead SC70, the ADA4853-2 is available in a 16-lead LFCSP_VQ, and the ADA4853-3 is available in both a 16-lead LFCSP_VQ and a 14-lead TSSOP. The ADA4853-1 temperature range is ?40°C to while the ADA4853-2/ADA4853-3 temperature range is ?40°C to 6.56.46.3 ) Bd(6.2NIAG6.1POO6.0L-D5.9SEOL5.8C5.75.60 10-4885.550FREQUENCY(MHz) 105°C. 85°C, 文档下载 免费文档下载 http://www.wendangwang.com/ Figure 5. 0.5 dB Flatness Frequency Response One Technology Way, P.O. Box 9106, Norwood, 02062http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a-9106, MA U.S.A.Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ?2006 Analog Devices, Inc. All rights reserved. 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 Typical Performance Characteristics..............................................6 Circuit Description..................................................................... ....14 Headroom Considerations........................................................14 Overload Behavior and Recovery............................................14 Applications.................................................................... .................15 Single-Supply Amplifier.................................................15 Video Power Bypassing............................................................15 Supply 文档下载 免费文档下载 http://www.wendangwang.com/ Layout.......................................................................... ................15 Outline Dimensions.............http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a.. ........................................................16 Ordering Guide..........................................................................1 6 TABLE OF CONTENTS Features........................................................................ ......................1 Applications.................................................................... ...................1 Pin Configurations.................................................................. .........1 General Description..................................................................... ....1 Revision History......................................................................... ......2 Specifications.................................................................. ...................3 Specifications with 3 V Supply...................................................3 Specifications with 5 V Supply...................................................4http://www.wendangwang .com/doc/89eddaed80358fd0fe9cbc7a Absolute Ratings............................................................5 Maximum Thermal Resistance...................................................................... 5 ESD Caution......................................................................... .........5 文档下载 免费文档下载 http://www.wendangwang.com/ REVISION HISTORY 10/06—Rev. A to Rev. B Added ADA4853-3.............................................................Universal Added 16-Lead LFCSP_VQ..............................................Universal Added 14-Lead TSSOP......................................................Universal Changes to Features........................................................................ ..1 Changes to DC Performance, Input Characteristics, and Power Supply Sections........................................................................ .........3 Changes to DC Performance, Input Characteristics, and Power Supply Sections...............................http://www.wendangwang.com/doc/89eddaed80 358fd0fe9cbc7a..................................................4 Changes to Figure 20........................................................................8 Changes to Figure 49......................................................................13 Updated Outline Dimensions.......................................................16 Ordering Changes to Guide..........................................................16 7/06—Rev. 0 to Rev. A Added ADA4853-2.............................................................Universal Changes to Features and General Description.............................1 Changes to Table 1............................................................................3 Changes to Table 文档下载 免费文档下载 http://www.wendangwang.com/ 2............................................................................4 Changes to Table 3............................................................................5 Changes to Figure 7.............................http://www.wendangwang.com/doc/89eddaed80358fd0fe9 cbc7a..............................................6 Changes to Figure 11 Caption, Figure 12, Figure 13, and Figure 16.............................................................................. ........7 Changes to Figure 17 and Figure 19................................................8 Inserted Figure 21; Renumbered Sequentially..............................8 Inserted Sequentially..............................9 Figure Changes 25; Renumbered to Figure 28.........................................................................9 Changes to Figure 31 through Figure 35.....................................10 Changes to Figure 37, Figure 39 through Figure 42..................11 Inserted Figure 43 and Figure 46..................................................12 Inserted Figure 47...........................................................................13 Changes to Circuit Description Section......................................1http://www.wendangwang.com/doc/89e ddaed80358fd0fe9cbc7a3 Changes Section.........................13 to Changes Headroom Considerations to Figure 48......................................................................14 Updated Dimensions.......................................................15 Outline Changes Ordering Guide..........................................................15 to 文档下载 免费文档下载 http://www.wendangwang.com/ 1/06—Revision 0: Initial Version Rev. B | Page 2 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 SPECIFICATIONS SPECIFICATIONS WITH 3 V SUPPLY TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = 2, RL = 150 Ω, unless otherwise noted. Table 1. Unit DYNAMIC PERFORMANCE 2, VO = 2 V p-p 150 Ω 22 = 32 ?3 dB Bandwidth G = MHz Bandwidth for 0.5 dB Flatness MHz Settling Time to 0.1% 2 V 1, VO = 0.1 V p-p VO = 2 V step step 88 G = 45 90 MHz G = 2, VO = 2 V p-p, RL = ns Slew Rate G = 100 2, VO V/μs NOISE/DISTORThttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aION PERFORMANCE Ω 0.10 Differential Gain RL = 150 Ω Degrees Input Voltage Noise f = 100 kHz f = 100 kHz 2.2 dB DC PERFORMANCE μV/°C 0.20 pA/√Hz Crosstalk G = 22 % Differential Phase RL = 150 nV/√Hz Input Current Noise 2, VO = 2 V p-p, RL = 150 Ω, f = 5 MHz Input Offset Voltage 1 4 mV Input Offset Voltage Drift ?66 1.6 文档下载 免费文档下载 http://www.wendangwang.com/ Input Bias CurrentμA Input Bias Current Drift 50 nA Open-Loop Gain VO = 0.5 V to 2.5 V 72 80 Resistance Differential/common mode 0.5/20 Common-Mode Voltage Range ?0.2 to (Rise/Fall) VIN = ?0.5 V to 3.5 V, G = = 0 V to 1 V ?69 ?85 1.4 4 dB dB INPUT CHARACTERISTICS MΩ Input Capacitance VCC ? 1.2 1 40 120 0.6 Power-down 1.2 V Turn-Off Time ns Power-Down Bias Current VIN = ?0.25 V to 1.75 V, G = Voltage Swing RL = 150 Ω 0.3 to 2.7 0.15 to 2.88 Sinking/sourcing Quiescent Current = low 150/120 pF Input ns Common-Mode Rejection Ratio VCM μA OUTPUThttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a Output Overdrive Recovery Time Input V Input Overdrive Recovery Time Power-Down Input Voltage μs Turn-On Time nA/°C Input Bias Offset Current mA POWER SUPPLY μA CHARACTERISTICS 2 70 ns Output V Short-Circuit Current Operating Range 2.65 5 V 1.3 1.6 mA/amplifier Quiescent Current (Power-Down) Power-down 0.1 1.5 μA Positive Power Supply Rejection VS = 1.5 V to 2.5 V, ?VS = ?1.5 V ?76 ?86 dB Negative Power Supply Rejection ?VS = ?1.5 V to ?2.5 V, V ?77 ?88 dB VS = 1.5 Rev. B | Page 3 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 SPECIFICATIONS WITH 5 V SUPPLY TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = Table 2. 2, RL = 150 Ω, unless otherwise noted. 文档下载 免费文档下载 http://www.wendangwang.com/ Unit DYNAMIC PERFORMANCE = 2, VO = 2 V p-p ?3 dB Bandwidth G = 35 1, VO = 0.1 V p-p MHz Bandwidth for 0.5 dB Flatness p-phttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a to 0.1% VO = 2 V step 54 ns Slew Rate G = NOISE/DISTORTION PERFORMANCE 0.10 ?66 22 2.2 1.6 Resistance Differential/common mode V/μs Degrees Input Voltage Noise f = 100 kHz pA/√Hz Crosstalk G = 2, VO = 2 V Input Offset Voltage 1 μV/°C 4 VO = 0.5 V to 4.5 V 72 80 Common-Mode Voltage Range 93 120 % Input Bias CurrentμA Input Bias Current Drift nA Open-Loop Gain MHz Settling Time 2, VO = 2 V step dB DC PERFORMANCE 4.1 mV Input Offset Voltage Drift G 0.22 nV/√Hz Input Current Noise f = 100 kHz 60 22 MHz 2, VO = 2 V Differential Gain RL = 150 Ω Differential Phase RL = 150 Ω p-p, RL = 150 Ω, f = 5 MHz G = 100 0.5/20 nA/°C Input Bias Offset Current dB INPUT CHARACTERISTICS MΩ Input Capacitance Input 0.6 pF Input ?0.2 to VCC ? 1.2 Input Overdrive Recovery Time (Rise/Fall) VIN = ?0.5 V to Common-Mode Rejection Ratio VCM = 0 V to 3 5.5 V, G = V ?71 1 ?88 40 ns dB Powehttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7ar-Down Input Voltage Power-down Current 1.2 μA VIN = ?0.25 V to 0.1 to 4.8 V Turn-Off Time 1.5 μA OUTPUT CHARACTERISTICS 2.75 V, G = 2 55 V Short-Circuit Current Operating Range 2.65 2.5 V to 120 ns Power-Down Bias Output Overdrive Recovery Time ns Output Voltage Swing RL = 75 Ω 0.55 to 4.5 Sinking/sourcing 5 V Quiescent Current Current (Power-Down) Power-down = low VS = μs Turn-On Time 160/120 mA POWER SUPPLY 1.4 1.8 mA/amplifier Quiescent 0.1 1.5 μA Positive Power Supply Rejection 3.5 V, ?VS = ?2.5 V ?75 ?80 dB Negative Power Supply Rejection ?VS 文档下载 免费文档下载 http://www.wendangwang.com/ = ?2.5 V to ?3.5 V, VS = 2.5 V ?75 ?80 dB Rev. B | Page 4 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 ABSOLUTE MAXIMUM RATINGS The power dissipated in the package (PD) for a sine wave and a resistor load is the total power consumed from the supply ://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aarminus the load power. Table 3. Supply Voltage Power Dissipation Common-Mode Input Voltage Differential Input Voltage Storage Temperature Range Operating Temperature Range 6-Lead SC70 16-Lead LFCSP_VQ 14-Lead TSSOP Lead Temperature 5.5 V Junction Temperature 文档下载 免费文档下载 http://www.wendangwang.com/ See Figure 6 ?VS ? 0.2 V to VS ? 1.2 V ±VS ?65°C to 125°C ?40°C to 85°C ?40°C to 105°C ?40°C to 105°C JEDEC J-STD-20 150°C PD = Total Power Consumed ? Load Power PD=VSUPPLYVOLTAGE×ISUPPLYCURRENT–RMS output voltages should be considered. () VOUT2 RL Airflow increases heat dissipation, effectively reducing θJA. In addition, more metal directly in contact with the package leads and through holes under the device reduces θJA. Figure 6 shows the maximum safe power dissipation in the package vs. the ambient temperature for the 6-lead (430°C/W),http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a the SC70 14-lead TSSOP (120°C/W), and the 16-lead LFCSP_VQ (63°C/W) on a JEDEC standard 4-layer board. θJA values are approximations. 3.0 M 文档下载 免费文档下载 http://www.wendangwang.com/ AXIMUM POWER DISSIPATION (W) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2.5 THERMAL RESISTANCE θJA is specified for the worst-case conditions, that is, θJA is specified for the device soldered in the circuit board for surface-mount packages. Table 4. Package Type 6-Lead SC70 16-Lead LFCSP_VQ 14-Lead TSSOP 2.0 1.5 1.0 θJA430 63 120http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a Unit °C/W °C/W °C/W 文档下载 免费文档下载 http://www.wendangwang.com/ 0.5 –55 –35 –15 5 25 45 65 85 105 125 05884-059 Figure 6. Maximum Power Dissipation vs. Temperature for a 4-Layer Board AMBIENT TEMPERATURE (°C) 文档下载 免费文档下载 http://www.wendangwang.com/ Maximum Power Dissipation The maximum safe power dissipation for the ADA4853-1/ ADA4853-2/ADA4853-3 is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit can change the stresses that the package exerts on the die, permanently shifting the parametric performance of the amplifiers. Exceeding a junction temperature of 150°C for an extended period can result in changes in silicon devices, potentially causing degradation or loss of functionality. ://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aparESD CAUTION Rev. B | Page 5 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 TYPICAL PERFORMANCE CHARACTERISTICS 2 5 文档下载 免费文档下载 http://www.wendangwang.com/ NORMALIZED CLOSED-LOOP GAIN (dB) 10–1 43 CLOSED-LOOP GAIN (dB) 210–1–2–3–4–5 05884-009 05884-010 –2–3 –4–5 –60.1 1 10 FREQUENCY (MHz) 100 200 文档下载 免费文档下载 http://www.wendangwang.com/ 05884-00 6 –6 FREQUENCY (MHz) Figure 7. Small Signal Frequency Response for Various Gains 32 CLOSED-LOOPGAIN(dB) Figure 10. Small Signal Frequency Response for Various Capacitive Loads 6.5 6.46.3 CLOSED-LOOPGAIN(dB) 10–1–2–3–4–5 文档下载 免费文档下载 http://www.wendangwang.com/ FREQUENCY(MHz) 05884-007 6.26.1 6.05.95.85.75http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a.65.5FREQUEN CY(MHz) –6 Figure 8. Small Signal Frequency Response for Various Loads 432 CLOSED-LOOPGAIN(dB) Figure 11. 0.5 dB Flatness Response for Various Output Voltages 8.0 7.87.6 CLOSED-LOOP GA 文档下载 免费文档下载 http://www.wendangwang.com/ IN (dB) 7.47.27.06.86.66.46.26.05.8 10–1–2–3–4–5 FREQUENCY(MHz) 0.1110 FREQUENCY (MHz) 1001000 Figure 9. Small Signal Frequency Response for Various Supplies Figure 12. ADA4853-3 LFCSP_VQ Flatness Response for Various Output Voltages Rev. B | Page 6 of 16 05884-060 05884- 008 文档下载 免费文档下载 http://www.wendangwang.com/ –65.6 元器件交易网 www.cecb2b.com 1 NORMALIZEDCLOSED-LOOPGAIN(dB) ADA4853-1/ADA4853-2/ADA4853-3 4 –1–2–3–4–5 FREQUENCY(MHz) CLOSED-LOOP GAIN(dhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aB) 3 210–1–2–3–4–5 05884-011 文档下载 免费文档下载 http://www.wendangwang.com/ FREQUENCY (MHz) 05884-014 –6–6 Figure 13. Large Signal Frequency Response for Various Gains 7 Figure 16. Small Signal Frequency Response for Various Temperatures 250 SLEW RATE(V/?s) 6 CLOSED-LOOPGAIN(dB) 5 432 200 文档下载 免费文档下载 http://www.wendangwang.com/ 150 100 50 1 FREQUENCY(MHz) 05884-012 OUTPUTVOLTAGESTEP(V) 05884-015 00 Figure 14. Large Signal Frequency Response for Various Loads 543 CLOSED-LOOP 文档下载 免费文档下载 http://www.wendangwang.com/ GAIN (dB) Figure 17. Slew Rate vs. Output Voltage 140120100 8060 40200 05884-013 10–1–2–3–4–5–6FREQUENCY(MHz) OPEN-LOOP GAIN (dB) 2 – 6http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a0–90–120–150–180–21 0–240 1k10k100k1M10M100M FREQUENCY(Hz) 文档下载 免费文档下载 http://www.wendangwang.com/ 05884-029 –20100 OPEN-LOOP PHASE (Degrees ) 0–30 Figure 15. Small Signal Frequency Response for Various Temperatures Figure 18. Open-Loop Gain and Phase vs. Frequency Rev. B | Page 7 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 –20–30–40–50–60–70–80–90100 文档下载 免费文档下载 http://www.wendangwang.com/ CLOSED-LOOP OUTPUT IMPEDANCE (?) COMMON-MODE REJECTION (dB) 100k 1k10k100k1M10M100M1k10k100k1M10M100M FREQUENCY (Hz) FREQUENCY (Hz) 05884-050 100 Figure 19. Common-Mode Rejection vs. Frequency –10 POWER SUPPLY REJECTION (dB) Figure 22. Output Impedance vs. Frequency Disabled 文档下载 免费文档下载 http://www.wendangwang.com/ –40–50://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a HARMONICDISTORTION(dBc) –20–30–40–50–60–70–80–90 05884-031 –60–70–80–90–100 1k10k100k1M10M100M FREQUENCY (Hz) - FREQUENCY (MHz) 05884-01605884-017 –100 100 –110 Figure 20. Power Supply Rejection vs. Frequency 文档下载 免费文档下载 http://www.wendangwang.com/ 1000 CLOSED-LOOP OUTPUT IMPEDANCE (?) Figure 23. Harmonic Distortion vs. Frequency –40–50 HARMONICDISTORTION(dBc) 100 –60–70–80–90–100–110–120 10 1 0.1 0.01 100 1k10k100k1M10M100M 文档下载 免费文档下载 http://www.wendangwang.com/ FREQUENCY (Hz) FREQUENCY (MHz) Figure 21. Output Impedance vs. Frequency Enabled Figure 24. Harmonic Distortion vs. Frequency Rev. B | Page 8 of 16 元器件交易网 www.cecb2b.com –40–5http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a0 ADA4853-1/ADA4853-2/ADA4853-3 2.602.582.56 HARMONICDISTORTION(dBc) 文档下载 免费文档下载 http://www.wendangwang.com/ OUTPUT VOLTAGE (V) –60 –70–80–90–100 –110–120 05884-018 2.542.522.502.482.462.442.42 05884-033 FREQUENCY (MHz) 2.40 Figure 28. Small Signal Pulse Response for Various Supplies Figure 25. Harmonic Distortion vs. Frequency –30 文档下载 免费文档下载 http://www.wendangwang.com/ –40 HARMONIC DISTORTION (dBc) OUTPUT VO LTAGE (V) –50 –60–70–80–90–100 0.1 05884-034 1 FREQUENCY(MHz) 10 05884-051 Figure 29. Small Signal Pulse Response for Various Capacitive Loads 文档下载 免费文档下载 http://www.wendangwang.com/ 3.75 Figure 26. Harmonic Distortion vs. Frequency –40–50HARMONICDISTORTION (dBc) 3.503.25 OUTPUThttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a VOLTAGE (V) –60–70–80–90–100 3.002.752.502.252.001.75 05884-019 –120 VOUT (V p-p) 1.501.25 05884-035 –110 文档下载 免费文档下载 http://www.wendangwang.com/ Figure 30. Large Signal Pulse Response for Various Supplies Figure 27. Harmonic Distortion for Various Output Voltages Rev. B | Page 9 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 3.753.503.25 1000 3.002.752.502.252.001.751.501.25 05884-036 VOLTAGE NOISE (nVHz) 文档下载 免费文档下载 http://www.wendangwang.com/ OUTPUT VOLTAGE (V) 100 1001k10k100k1M10M FREQUENCY(Hz) 05884-03705884-038 1010 Figure 31. Large Signal Pulse Response for Various Capacitive Loads 100 Figure 34. Voltage Noise vs. Frequency INPUT AND OUTPUT VOLTAGhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aE (V) 文档下载 免费文档下载 http://www.wendangwang.com/ CURRENT NOISE (pAHz) 05884-020 10 –0.5 100ns/DIV 110 1001k10k100k1M10M FREQUENCY(Hz) Figure 32. Output Overdrive Recovery 2018161412 Figure 35. Current Noise vs. Frequency 文档下载 免费文档下载 http://www.wendangwang.com/ INPUT AND OUTPUT VOLTAGE (V) COUNT 108642 05884-042 05884-021 –0.5 100ns/DIV 0–4 –3–2–1 01234 VOFFSET (mV) Figure 33. Input Overdrive Recovery Figure 36. VOS Distribution 文档下载 免费文档下载 http://www.wendangwang.com/ Rev. B | Page 10 of 16 元器件交易网 www.cecb2b.com –0.6 –0.8 INPUT BIAS CURRENT (?A) ADA4853-1/ADA4853-2/ADA4853-3 –0.50–0.52–0.54–0.56–0.58–0.60–0.62–0.64 –0.66 05884-022 –1.0 VOS (mV) –1.2–http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a1.4–1.6–1.8 –2.0 文档下载 免费文档下载 http://www.wendangwang.com/ VCM (V) –20020406080 TEMPERATURE(°C) 05884-02705884-03905884-040 –0.68 –40 Figure 37. VOS vs. Common-Mode Voltage 1.5 3.0 Figure 40. Input Bias Current vs. Temperature 2.8 文档下载 免费文档下载 http://www.wendangwang.com/ SUPPLY CURRENT (mA) OUTPUT VOLTAGE (V) 1.0 0.5 2.6 2.40.6 0.4 0.2 VOLTAGE(V) 05884-023 01 10 100 LOAD 文档下载 免费文档下载 http://www.wendangwang.com/ RESISTANCE(?) 1k 10k Figure 38. Supply Current vs. Voltage –0.6 5.0 Figure 41. Output Voltage vs. Load Resistance INPUT OFFSET VOLTAGE (mV ) –0.7 4.8OUTPUT VOLTAGE (V) 05884-026 文档下载 免费文档下载 http://www.wendangwang.com/ 4.6 –0.8 4.40.6://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7ar 0.4 –0.9 0.2 010 100 1k 10k –1.0 TEMPERATURE (°C) LOADRESISTANCE(?) Figure 39. Input Offset Voltage vs. Temperature 文档下载 免费文档下载 http://www.wendangwang.com/ Figure 42. Output Voltage vs. Load Resistance Rev. B | Page 11 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 3.02.92.8 OUTPUT VOLTAGE (V) 3.03.12.92.82.7 VOLTAGE (V) 2.62.50.50.40.30.20.1 05884-041 2.62.52.42.3 2.22.12.0 文档下载 免费文档下载 http://www.wendangwang.com/ 5101520253035404550LOADCURRENT(mA) TIME(ns) 05884-045 1.9 2VINPUT –VOU TPUT(V) 2.7 Figure 43. Output Voltage vs. Load Current 5.04.94.8 OUTPUT VOLTAGE (V) 文档下载 免费文档下载 http://www.wendangwang.com/ Figure 46. 0.1% Timhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7ae POWER DOWN PIN VOLTAGE (V) TIME (?s) 1 3 4.64.50.50.40.30.20.1 5 10 15 20 25 Settling 文档下载 免费文档下载 http://www.wendangwang.com/ 30 35 40 45 50 05884-0 52 05884-04605884-054 LOADCURRENT(mA) OUTPUTVOLTAGE(V) 4.72 Figure 44. Output Voltage vs. Load Current 文档下载 免费文档下载 http://www.wendangwang.com/ 0.25 –40 Figure 47. Enable/Disable Time OUTPUT SATURATION VOLTAGE (V) 0.20 –50 CROSSTALK (dB) –60 0.15 –70 0.10 –80 0.05 –90 文档下载 免费文档下载 http://www.wendangwang.com/ –20020406080 05884-053 0–40–100 100k 1M10M FREQUENCY (Hz) 100M200M Figure 45. Output Saturation Voltage vs. Temperature Varioushttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a Supplies TEMPERATURE(°C) Figure 48. Crosstalk vs. Frequency Rev. B | Page 12 of 16 for 文档下载 免费文档下载 http://www.wendangwang.com/ 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 INPUT-TO-OUTPUT ISOLATION (dB) 110 FREQUENCY (MHz) 100200 05884-055 0.1 Figure 49. Input-to-Output Isolation, Chip Disabled Rev. B | Page 13 of 16 元器件交易网 www.cecb2b.com 文档下载 免费文档下载 http://www.wendangwang.com/ ADA4853-1/ADA4853-2/ADA4853-3 For signals approaching the negative supply and inverting gain and high positive gain configurations, the headroom limit is the output stage. The ADA4853-1/ADA4853-2/ADA4853-3 use a common-emitter output stage. This output stage maximizes the available output range, limited by the saturation voltage of the output transistors. The saturation voltage increases with the drive currhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aent that the output transistor is required to supply due to the output transistor’s collector resistance. As the saturation point of the output stage is approached, the output signal shows increasing amounts of compression and clipping. As in the input headroom case, higher frequency signals require a bit more headroom than the lower frequency signals. Figure 27 illustrates this point by plotting the typical distortion vs. the output amplitude. CIRCUIT DESCRIPTION The ADA4853-1/ADA4853-2/ADA4853-3 feature a high slew rate input stage that is a true single-supply topology capable of sensing signals at or below the minus supply rail. The rail-to-rail output stage can pull within 100 mV of either supply rail when driving light loads and within 200 mV when driving 150 Ω. High speed performance is maintained at supply voltages as low as 2.65 V. HEADROOM CONSIDERATIONS The 文档下载 免费文档下载 http://www.wendangwang.com/ ADA4853-1/ADA4853-2/http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aADA48 53-3 are designed for use in low voltage systems. To obtain optimum performance, it is useful to understand the behavior of the amplifiers as input and output signals approach their headroom limits. The amplifiers’ input common-mode voltage range extends from the negative supply voltage (actually 200 mV below this) to within 1.2 V of the positive supply voltage. Exceeding the headroom limits is not a concern for any inverting gain on any supply voltage, as long as the reference voltage at the amplifiers’ positive input lies within the amplifiers’ input common-mode range. The input stage is the headroom limit for signals approaching the positive rail. Figure 50 shows a typical offset voltage vs. the input common-mode voltage for the ADA4853-1/ADA4853-2/ ADA4853-3 on a 5 V supply. Accurate dc performance is maintained from approximately 200 mV below the negative supply to within 1.2 V of the positive supply. Fohttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7ar high speed signals, however, there are other considerations. As the common-mode voltage gets within 1.2 V of positive supply, the amplifier responds well but the bandwidth begins to drop as the common-mode voltage approaches the positive supply. This can manifest itself in increased distortion or settling time. Higher frequency signals require more headroom than the lower frequencies to maintain distortion performance. –0.6 –0.8–1.0 VOS (mV) 文档下载 免费文档下载 http://www.wendangwang.com/ OVERLOAD BEHAVIOR AND RECOVERY Input The specified input common-mode voltage of the ADA4853-1/ ADA4853-2/ADA4853-3 is 200 mV below the negative supply to within 1.2 V of the positive supply. Exceeding the top limit results in lower bandwidth and increased rise time. Pushing the input voltage of a unity-gain follower to less than 1.2 V from the positive supply leads to an increasing amount of output error as well settlhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aing as increased time. The recovery time from input voltages 1.2 V or closer to the positive supply is approximately 40 ns; this is limited by the settling artifacts caused by transistors in the input stage coming out of saturation. The amplifiers do not exhibit phase reversal, even for input voltages beyond the voltage supply rails. Going more than 0.6 V beyond the power supplies turns on protection diodes greatly increasing the current draw of the devices. –1.2–1.4–1.6–1.8 05884-022 –2.0 VCM (V) Figure 50. VOS vs. Common-Mode Voltage, VS = 5 V Rev. B | Page 14 of 16 at the input stage, 文档下载 免费文档下载 http://www.wendangwang.com/ 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 LAYOUT As is the case with all high speed applications, careful attention to printed circuit board (PCB) layout details prevents associated board parasitics from becoming problematic. The ADA4853-1/http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a ADA4853-2/ADA4853-3 can operate up to 100 MHz; therefore, proper RF design techniques must be employed. The PCB should have a ground plane covering all unused portions of the component side of the board to provide a low impedance return path. Removing the ground plane on all layers from the area near and under the input and output pins reduces stray capacitance. Signal lines connecting the feedback and gain resistors should be kept as short as possible to minimize the inductance and stray capacitance associated with these traces. Termination resistors and loads should be located as close as possible to their respective inputs and outputs. Input and output traces should be kept as far apart as possible to minimize coupling (crosstalk) through the board. Adherence to microstrip or stripline design techniques for long signal traces (greater than 1 inch) is recommended. For more information on high speed board layout, go to:http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7a www.analog.com to view A Practical Guide to High-Speed Printed-Circuit-Board Layout. APPLICATIONS 文档下载 免费文档下载 http://www.wendangwang.com/ SINGLE-SUPPLY VIDEO AMPLIFIER With low differential gain and phase errors and wide 0.5 dB flatness, the ADA4853-1/ADA4853-2/ADA4853-3 are ideal solutions for portable video applications. Figure 51 shows a typical video driver set for a noninverting gain of 2, where RF = RG = 1 kΩ. The video amplifier input is terminated into a shunt 75 Ω resistor. At the output, the amplifier has a series 75 Ω resistor for impedance matching to the video load. When operating in low voltage, single-supply applications, the input signal is only limited by the input stage headroom. R05884-043 Figure 51. Video Amplifier POWER SUPPLY BYPASSING Attention must be paid to ADA4853-1/ADA4853-2/ADA4853-3. bypassing High the quality power capacitors supply with pins low of the equivalent http://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aseries resistance (ESR), such as multilayer ceramic capacitors (MLCCs), should be used to minimize supply voltage ripple and power dissipation. A large, usually tantalum, 2.2 μF to 47 μF capacitor located in proximity to the ADA4853-1/ADA4853-2/ADA4853-3 is required to provide good decoupling for lower frequency signals. The actual value is determined by the circuit transient and frequency requirements. In addition, 0.1 μF MLCC decoupling capacitors should be located as close to each of the power supply pins as is physically possible, no more than ? inch away. The ground returns should terminate immediately into the ground plane. Locating the bypass capacitor return 文档下载 免费文档下载 http://www.wendangwang.com/ close to the load return minimizes ground loops and improves performance. Rev. B | Page 15 of 16 元器件交易网 www.cecb2b.com ADA4853-1/ADA4853-2/ADA4853-3 OUTLINE DIMENSIONS 0.10 COPLANARITY PLANE 0.10://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aar COMPLIANT TO JEDEC STANDARDS MO-203-AB COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 52. 6-Lead Thin Shrink Small Outline Transistor Package [SC70] (KS-6)—Dimensions shown in millimeters Figure 53. 14-Lead Thin Shrink Small Outline Package [TSSOP] 文档下载 免费文档下载 http://www.wendangwang.com/ (RU-14)—Dimensions shown in millimeters 0.500.400.900.850.80*COMPLIANTTOJEDEC STANDARDS MO-220-VEED-2 EXCEPT FOR EXPOSED PAD DIMENSION. Figure 54. 16-Lead Lead Frame Chip Scale Package [LFCSP_VQ] 3 mm × 3 mm Body, Very Thin Quad (CP-16-3)—Dimensions shown in millimeters ORDERING GUIDE Model ADA4853-1AKSZ-R21ADA4853-1AKSZ-R71ADA4853-1AKSZ-RL1ADA4853-2YCPZ-R21ADA4853-2YCP Z-RL1ADA4853-2YCPZ-RL71ADA4853-3YCPZ-R21ADA4853-3YCPZ-RL1ADA4853-3YCPZ-R71ADA485 3-3YRUZ1 ADA4853-3YRUZ-RL1ADA4853-3YRUZ-R71 1 Temperaturhttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7ae Description –40°C to 85°C 6-Lead Thin Shrink Small Outline Transistor Package 文档下载 免费文档下载 http://www.wendangwang.com/ (SC70) –40°C to –40°C to to 85°C 6-Lead Thin Shrink Small Outline Transistor Package (SC70) 85°C 6-Lead Thin Shrink Small Outline Transistor Package (SC70) –40°C 105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) –40°C to 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) –40°C to Frame Chip Scale Package (LFCSP_VQ) –40°C to Package (LFCSP_VQ) –40°C to –40°C to 105°C 105°C 16-Lead Lead 105°C 16-Lead Lead Frame Chip Scale 105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) –40°C to 105°C 14-Lead Think Shrink Small Outline Package (TSSOP) –40°C to Think Shrink Small Outline Package (TSSOP) –40°C to 105°C 14-Lead 105°C 14-Lead Think Shrink Small Outline Package (TSSOP) Ordering Quantity 250 3,000 10,000 250 5,000 1,500 250 5,000 1,500 96 2,500 1,000 Package KS-6 HEC Khttp://www.wendangwang.com/doc/89eddaed80358fd0fe9cbc7aS-6 HEC KS-6 HEC CP-16-3 H0H CP-16-3 H0H CP-16-3 H0H CP-16-3 H0L CP-16-3 H0L CP-16-3 H0L RU-14 RU-14 RU-14 Z = Pb-free part. ?2006 Analog Devices, Inc. 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