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LME49725 LME49725 PowerWise® Dual High Performance, High Fidelity Audio Operational Amplifier Literature Number: SNAS427 www.BDTIC.com/TI LME49725 PowerWise® Dual High Performance, High Fidelity Audio Operational Amplifier Key Specifications General Description The LME49725 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LME49725 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. The LME49725 combines extremely low voltage noise density (3.3nV/√Hz) with vanishingly low THD+N (0.00004%) to easily satisfy the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49725 has a high slew rate of ±15V/μs and an output current capability of ±22mA. Further, dynamic range is maximized by an output stage that drives 2kΩ loads to within 1V of either power supply voltage and to within 1.4V when driving 600Ω loads. Part of the PowerWise® family of energy efficient solutions, the LME49725 consumes only 3.0mA of supply current per amplifier while providing superior performance to high performance, high fidelity applications. The LME49725's outstanding CMRR (120dB), PSRR (120dB), and VOS (0.5mV) give the amplifier excellent operational amplifier DC performance. The LME49725 has a wide supply range of ±4.5V to ±18V. Over this supply range the LME49725’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49725 is unity gain stable. This audio operational amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LME49725 is available in 8–lead narrow body SOIC. ■ Power Supply Voltage Range ■ THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz) RL = 2kΩ 0.00004% (typ) RL = 600Ω 0.00004% (typ) ■ Quiescent current per Amplifier ■ Input Noise Density 300342 3.0mA (typ) 3.3nV/√Hz (typ) ■ Slew Rate ±15V/μs (typ) ■ Gain Bandwidth Product 40MHz (typ) ■ Open Loop Gain (RL = 600Ω) 135dB (typ) ■ Input Bias Current 15nA (typ) ■ Input Offset Voltage ■ DC Gain Linearity Error 0.5mV (typ) 0.000009% (typ) Features ■ Optimized for superior audio signal fidelity ■ Output short circuit protection ■ PSRR and CMRR exceed 120dB (typ) Applications ■ ■ ■ ■ ■ ■ ■ ■ ■ Audio amplification Preamplifiers Multimedia Phono preamplifiers Professional audio Equalization and crossover networks Line drivers Line receivers Active filters www.BDTIC.com/TI © 2008 National Semiconductor Corporation ±4.5V to ±18V www.national.com LME49725 PowerWise® Dual High Performance, High Fidelity Audio Operational Amplifier April 3, 2008 LME49725 Connection Diagrams 30034255 Order Number LME49725MA See NS Package Number — M08A LME49725 Top Mark 300342p0 N — National logo Z — Assembly plant code X — 1 Digit date code TT — Die traceability L49725 — LME49725 MA — Package code www.national.com www.BDTIC.com/TI 2 If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage (VS = V+ - V-) Storage Temperature Input Voltage Differential Input Voltage Output Short Circuit (Note 3) Power Dissipation 38V −65°C to 150°C (V-)-0.7V to (V+)+0.7V ±0.7V Continuous Internally Limited 2000V 200V 100V 150°C θJA (SO) Temperature Range 145°C/W TMIN ≤ TA ≤ TMAX Supply Voltage Range Electrical Characteristics for the LME49725 (Note 2) –40°C ≤ TA ≤ 85°C ±4.5V ≤ VS ≤ ±18V The specifications apply for VS = ±15V, RL = 2kΩ, fIN = 1kHz, TA = 25°C, unless otherwise specified. LME49725 Parameter Symbol Conditions Typical Limit (Note 6) (Note 7) 0.00004 0.00004 0.0002 Units (Limits) AV = 1, VOUT = 3Vrms THD+N Total Harmonic Distortion + Noise RL = 2kΩ RL = 600Ω AV = 1, VOUT = 3VRMS Two-tone, 60Hz & 7kHz 4:1 0.00005 % % IMD Intermodulation Distortion % GBWP Gain Bandwidth Product 40 30 MHz (min) SR Slew Rate ±15 ±10 V/μs (min) FPBW Full Power Bandwidth VOUT = 1VP-P, –3dB referenced to output magnitude at f = 1kHz ts Settling time AV = –1, 10V step, CL = 100pF 0.1% error range 1.6 Equivalent Input Noise Voltage fBW = 20Hz to 20kHz 0.4 0.8 μVRMS Equivalent Input Noise Density f = 1kHz f = 10Hz 3.3 20 5.2 nV/√Hz in Current Noise Density f = 1kHz f = 10Hz 1.4 3.5 VOS Offset Voltage en 7 MHz μs ±0.5 (max) (max) pA/√Hz pA/√Hz ±1.0 mV (max) Average Input Offset Voltage Drift vs ΔVOS/ΔTemp –40°C ≤ TA ≤ 85°C Temperature 0.2 PSRR Average Input Offset Voltage Shift vs ΔVS = 20V (Note 8) Power Supply Voltage 120 ISOCH-CH Channel-to-Channel Isolation fIN = 1kHz fIN = 20kHz 118 112 IB Input Bias Current VCM = 0V ±15 ΔIOS/ΔTemp Input Bias Current Drift vs Temperature –40°C ≤ TA ≤ 85°C 0.1 IOS Input Offset Current VCM = 0V 11 65 nA (max) ±13.9 (V+)-2.0 (V-)+2.0 V (min) V (min) 120 100 dB (min) VIN-CM CMRR ZIN Common-Mode Input Voltage Range Common-Mode Rejection –10V<Vcm<10V Differential Input Impedance Common Mode Input Impedance –10V<Vcm<10V μV/°C 100 dB dB ±90 nA (max) nA/°C 30 kΩ 1000 MΩ www.BDTIC.com/TI 3 dB (min) www.national.com LME49725 ESD Rating (Note 4) ESD Rating (Note 5) Pins 1, 4, 7 and 8 Pins 2, 3, 5 and 6 Junction Temperature Thermal Resistance Absolute Maximum Ratings (Note 1) LME49725 LME49725 Symbol AVOL VOUTMAX IOUT Open Loop Voltage Gain Maximum Output Voltage Swing Output Current Units (Limits) Typical Limit (Note 6) (Note 7) –10V<Vout<10V, RL = 600Ω 135 110 –10V<Vout<10V, RL = 2kΩ 135 dB –10V<Vout<10V, RL = 10kΩ 135 dB Parameter Conditions dB (min) RL = 600Ω ±13.6 RL = 2kΩ ±13.9 V RL = 10kΩ ±14.0 V ±22 mA (min) +45 –35 mA mA 0.01 18 Ω Ω RL = 600Ω, VS = ±17V IOUT-CC Instantaneous Short Circuit Current ROUT Output Impedance fIN = 10kHz Closed-Loop Open-Loop CLOAD Capacitive Load Drive Overshoot 100pF 16 IS Quiescent Current per Amplifier IOUT = 0mA 3.0 fC 1/f Corner Frequency ±11.5 V (min) % 4.5 120 mA (max) Hz Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed. Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings, whichever is lower. Note 4: Human body model, applicable std. JESD22-A114C. Note 5: Machine model, applicable std. JESD22-A115-A. Note 6: Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of product characterization and are not guaranteed. Note 7: Datasheet min/max specification limits are guaranteed by test or statistical analysis. Note 8: PSRR is measured as follows: VOS is measured at two supply voltages, ±5V and ±15V, PSRR = |20log(ΔVOS/ΔVS)|. www.national.com www.BDTIC.com/TI 4 LME49725 Typical Performance Characteristics THD+N vs Frequency VS = 15V, VOUT = 3VRMS, RL = 600Ω THD+N vs Frequency VS = 4.5V, VOUT = 1.2VRMS, RL = 600Ω 300342a6 300342b1 THD+N vs Frequency VS = 18V, VOUT = 3VRMS, RL = 600Ω THD+N vs Frequency VS = 4.5V, VOUT = 1.2VRMS, RL = 2kΩ 300342a4 300342b4 THD+N vs Frequency VS = 15V, VOUT = 3VRMS, RL = 2kΩ THD+N vs Frequency VS = 18V, VOUT = 3VRMS, RL = 2kΩ 300342b2 300342a9 www.BDTIC.com/TI 5 www.national.com LME49725 THD+N vs Frequency VS = 4.5V, VOUT = 1.2VRMS, RL = 10kΩ THD+N vs Frequency VS = 15V, VOUT = 3VRMS, RL = 10kΩ 300342a5 300342b0 THD+N vs Output Voltage VS = 4.5V, RL = 600Ω, f = 1kHz THD+N vs Frequency VS = 18V, VOUT = 3VRMS, RL = 10kΩ 300342b3 30034234 THD+N vs Output Voltage VS = 15V, RL = 600Ω, f = 1kHz THD+N vs Output Voltage VS = 18V, RL = 600Ω, f = 1kHz 30034235 www.national.com 30034236 www.BDTIC.com/TI 6 LME49725 THD+N vs Output Voltage VS = 4.5V, RL = 2kΩ, f = 1kHz THD+N vs Output Voltage VS = 15V, RL = 2kΩ, f = 1kHz 30034229 30034228 THD+N vs Output Voltage VS = 4.5V, RL = 10kΩ, f = 1kHz THD+N vs Output Voltage VS = 18V, RL = 2kΩ, f = 1kHz 30034231 30034230 THD+N vs Output Voltage VS = 15V, RL = 10kΩ, f = 1kHz THD+N vs Output Voltage VS = 18V, RL = 10kΩ, f = 1kHz 30034232 30034233 www.BDTIC.com/TI 7 www.national.com LME49725 CMRR vs Frequency VS = 4.5V, RL = 600Ω CMRR vs Frequency VS = 15V, RL = 600Ω 30034283 30034284 CMRR vs Frequency VS = 4.5V, RL = 2kΩ CMRR vs Frequency VS = 15V, RL = 600Ω 30034277 30034285 CMRR vs Frequency VS = 15V, RL = 2kΩ CMRR vs Frequency VS = 18V, RL = 2kΩ 30034278 www.national.com 30034279 www.BDTIC.com/TI 8 LME49725 CMRR vs Frequency VS = 4.5V, RL = 10kΩ CMRR vs Frequency VS = 15V, RL = 10kΩ 30034281 30034280 CMRR vs Frequency VS = 18V, RL = 10kΩ +PSRR vs Frequency VS = 4.5V, RL = 2kΩ, VRIPPLE = 200mVP-P 30034282 30034268 +PSRR vs Frequency VS = 4.5V, RL = 10kΩ, VRIPPLE = 200mVP-P +PSRR vs Frequency VS = 4.5V, RL = 600Ω, VRIPPLE = 200mVP-P 30034269 30034270 www.BDTIC.com/TI 9 www.national.com LME49725 +PSRR vs Frequency VS = 15V, RL = 2kΩ, VRIPPLE = 200mVP-P +PSRR vs Frequency VS = 15V, RL = 10kΩ, VRIPPLE = 200mVP-P 30034271 30034272 +PSRR vs Frequency VS = 18V, RL = 2kΩ, VRIPPLE = 200mVP-P +PSRR vs Frequency VS = 15V, RL = 600Ω, VRIPPLE = 200mVP-P 30034273 300342a7 +PSRR vs Frequency VS = 18V, RL = 600Ω, VRIPPLE = 200mVP-P +PSRR vs Frequency VS = 18V, RL = 10kΩ, VRIPPLE = 200mVP-P 30034276 30034275 www.national.com www.BDTIC.com/TI 10 -PSRR vs Frequency VS = 4.5V, RL = 10kΩ, VRIPPLE = 200mVP-P 30034295 30034296 -PSRR vs Frequency VS = 4.5V, RL = 600Ω, VRIPPLE = 200mVP-P -PSRR vs Frequency VS = 15V, RL = 2kΩ, VRIPPLE = 200mVP-P 30034297 30034298 -PSRR vs Frequency VS = 15V, RL = 10kΩ, VRIPPLE = 200mVP-P -PSRR vs Frequency VS = 15V, RL = 600Ω, VRIPPLE = 200mVP-P 30034299 300342a0 www.BDTIC.com/TI 11 www.national.com LME49725 -PSRR vs Frequency VS = 4.5V, RL = 2kΩ, VRIPPLE = 200mVP-P LME49725 -PSRR vs Frequency VS = 18V, RL = 2kΩ, VRIPPLE = 200mVP-P -PSRR vs Frequency VS = 18V, RL = 10kΩ, VRIPPLE = 200mVP-P 300342a2 300342a1 -PSRR vs Frequency VS = 18V, RL = 600Ω, VRIPPLE = 200mVP-P Crosstalk vs Frequency VS = 4.5V, VOUT = 1.2VRMS, RL = 600Ω 300342a3 30034292 Crosstalk vs Frequency VS = 15V, VOUT = 3VRMS, RL = 600Ω Crosstalk vs Frequency VS = 18V, VOUT = 3VRMS, RL = 600Ω 30034293 www.national.com 30034294 www.BDTIC.com/TI 12 LME49725 Crosstalk vs Frequency VS = 4.5V, VOUT = 1.2VRMS,, RL = 2kΩ CrosstalkR vs Frequency VS = 15V, VOUT = 3VRMS,, RL = 2kΩ 30034286 30034287 Crosstalk vs Frequency VS = 18V, VOUT = 3VRMS,, RL = 2kΩ Crosstalk vs Frequency VS = 4.5V, VOUT = 1.2VRMS,, RL = 10kΩ 30034288 30034289 Crosstalk vs Frequency VS = 4.5V, VOUT = 1.2VRMS,, RL = 600Ω Crosstalk vs Frequency VS = 15V, VOUT = 3VRMS,, RL = 10kΩ 30034292 30034290 www.BDTIC.com/TI 13 www.national.com LME49725 Crosstalk vs Frequency VS = 15V, VOUT = 3VRMS,, RL = 600Ω Crosstalk vs Frequency VS = 18V, VOUT = 3VRMS, RL = 10kΩ 30034293 30034291 Crosstalk vs Frequency VS = 18V, VOUT = 3VRMS, RL = 600Ω IMD vs Output Voltage VS = 4.5V, RL = 600Ω 30034294 30034216 IMD vs Output Voltage VS = 15V, RL = 600Ω IMD vs Output Voltage VS = 18V, RL = 600Ω 30034267 30034266 www.national.com www.BDTIC.com/TI 14 LME49725 IMD vs Output Voltage VS = 4.5V, RL = 2kΩ IMD vs Output Voltage VS = 15V, RL = 2kΩ 30034264 30034210 IMD vs Output Voltage VS = 4.5V, RL = 10kΩ IMD vs Output Voltage VS = 18V, RL = 2kΩ 30034212 30034213 IMD vs Output Voltage VS = 15V, RL = 10kΩ IMD vs Output Voltage VS = 18V, RL = 10kΩ 30034265 30034215 www.BDTIC.com/TI 15 www.national.com LME49725 Total Quiescent Current vs Power Supply Voltage Noise Density vs Frequency VCC = 15V, VEE = –15V, No Load 30034246 30034247 Current Noise vs Frequency VCC = 15V, VEE = –15V, No Load 300342a8 www.national.com www.BDTIC.com/TI 16 OPERATING RATINGS AND BASIC DESIGN GUIDELINES The LME49725 has a supply voltage range from +9V to +36V single supply or ±4.5V to ±18V dual supply. Bypass capacitors for the supplies should be placed as close to the amplifier as possible. This will help minimize any in- www.BDTIC.com/TI 17 www.national.com LME49725 ductance between the power supply and the supply pins. In addition to a 10μF capacitor, a 0.1μF capacitor is also recommended. The amplifier’s inputs lead lengths should also be as short as possible. If the op amp does not have a bypass capacitor, it may oscillate. Application Information LME49725 Demonstration Board Schematic 30034260 www.national.com www.BDTIC.com/TI 18 Description Designator Ceramic Capacitor 0.1μF, 10% 50V 0805 SMD C1, C2 C0805C104K3RAC7533 Kemet Tantalum Capacitor 10μF, 10% 20V, B-size C3, C4 T491B106K025AT Kemet Resistor 0Ω, 1/8W, 1% 0805 SMD Resistor 10kΩ, 1/8W, 1% 0805 SMD Header, 2-Pin Header, 3-Pin SMA stand-up connectors Part Number Mfg JMPR1, JMPR4, R1, R4, R6, R9 CRCW0805000020EA R2, R3, R8, R7 Vishay CRCW080510K0FKEA Vishay JP1, JP2, JP3, JP4 JP5 P1-P4 (Optional) 132134 Amphenol COnnex Note: Do not stuff Jmpr2, Jmpr3, Jmpr5, and Jmpr6. www.BDTIC.com/TI 19 www.national.com LME49725 Bill Of Materials For Demonstration Board (Inverting Configuration) LME49725 Demonstration Board Layout 30034262 Silkscreen Layer 30034263 Top Layer 30034261 Bottom Layer www.national.com www.BDTIC.com/TI 20 LME49725 Revision History Rev Date 1.0 04/03/08 Description Initial release. www.BDTIC.com/TI 21 www.national.com LME49725 Physical Dimensions inches (millimeters) unless otherwise noted Narrow SOIC Package Order Number LME49725MA NS Package Number M08A www.national.com www.BDTIC.com/TI 22 LME49725 Notes www.BDTIC.com/TI 23 www.national.com LME49725 PowerWise® Dual High Performance, High Fidelity Audio Operational Amplifier Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Design Support Amplifiers www.national.com/amplifiers WEBENCH www.national.com/webench Audio www.national.com/audio Analog University www.national.com/AU Clock Conditioners www.national.com/timing App Notes www.national.com/appnotes Data Converters www.national.com/adc Distributors www.national.com/contacts Displays www.national.com/displays Green Compliance www.national.com/quality/green Ethernet www.national.com/ethernet Packaging www.national.com/packaging Interface www.national.com/interface Quality and Reliability www.national.com/quality LVDS www.national.com/lvds Reference Designs www.national.com/refdesigns Power Management www.national.com/power Feedback www.national.com/feedback Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www.national.com/led PowerWise www.national.com/powerwise Serial Digital Interface (SDI) www.national.com/sdi Temperature Sensors www.national.com/tempsensors Wireless (PLL/VCO) www.national.com/wireless THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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