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文档下载 免费文档下载 http://doc.xuehai.net/ MAX4003EUA 中文资料 本文档下载自文档下载网,内容可能不完整,您可以复制以下网址继续阅读或下载: http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html in a UCSP General Description Features The MAX4003 low-cost, low-power logarithmic amplifieris designed to detect the power levels of RF power?Complete RF Detector amplifiers (PAs) operating from 100MHz to 2500MHz. A?Frequency Range from 100MHz to 2500MHztypical dynamic range of 45dB makes this logarithmicamplifier useful in a variety of wireless applications?Input Range of -58dBV to -13dBV including cellular handset PA control, TSSI for wireless(-45dBm to 0dBm into 50?)terminal devices, and other transmitter power measure-?Fast Response: 70ns in 10dB Steps ments. This logarithmic amplifier provides much widermeasurement range and superior accuracy than typical?Low-Current Consumption: 5.9mA at VCC= 3.0Vdiode-based detectors. Excellent temperature stability is?13?A (typ) Shutdown Current achieved over the full operating range of -40°C to amplifier is a voltage-mea-?Available 85°C.The MAX4003 logarithmic in 8-Bump UCSP or 8-Pin ?MAXhttp://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html andsuring device with a typical signal range of -58dBV to Thin QFN Packages 文档下载 免费文档下载 http://doc.xuehai.net/ -13dBV. The input signal is internally AC-coupled by anon-chip 5pF capacitor in series with a 2k?resistance.This highpass coupling, with a corner at 16MHz, setsthe lowest operating frequency and allows the inputsignal source to be DC grounded. The MAX4003 alsofeatures a power-on delay, which holds the detectoroutput (OUT) low for approximately 5?s to ensureglitchless controller output. The MAX4003 is available in an 8-bump chip-scale pack-age (UCSP?), an 8-pin ?MAX package, and an 8-pin thinQFN package. The device consumes 5.9mA with a 3.0Vsupply and only 13?A when the device is in shutdown. Cellular Handsets (TDMA, CDMA, GPRS, GSM)TSSI for Wireless Terminal Devices Transmitter Power Measurement and ControlRSSI for Fiber Modules UCSP is a trademark of Maxim Integrated Products, Inc. For pricing,http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX4003 100MHz to 2500MHz, 45dB RF Detectorin a UCSPMAX4003 ABSOLUTE MAXIMUM RATINGS VCCto GND.........................................................-0.3V to 文档下载 免费文档下载 http://doc.xuehai.net/ 5.25VSHDN, CLPF to GND..................................-0.3V to (VCC 0.3V)RFIN....................................................................... ........... 6dBmOUT Short Circuit to GND.......................................................10sContinuous Dissipation (TA= 70°C) 8-Bump UCSP (derate 4.7mW/°C above 8-Pin ?MAX (derate 4.5mW/°C above 24.4mW/°C Power 70°C).........379mW 70°C).............362mW8-Pin Thin QFN (derate above 70°C)...1951mWOperating Range...........................-40°C to Temperature 85°CJunction Temperature...................................................http://doc.xuehai. net/b85732741ed9dda2ddc25eaf1.html... Range.............................-65°C to 150°CStorage Temperature 150°CLead Temperature (soldering, 10s)................................. 300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (VCC= 3.0V, VSHDN= VCC, CCLPF= 0.1?F, TA= -40°C to TA= 85°C. Typical values are at 25°C, unless otherwise noted.) (Note 1) 2_______________________________________________________________________________ ________ 文档下载 免费文档下载 http://doc.xuehai.net/ 100MHz to 2500MHz, 45dB RF Detector in a UCSP AC ELECTRICAL CHARACTERISTICS (VCC= 3.0V, http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmlVSHDN= VCC, CCLPF= 0.1?F, fRF= 100MHz to 2500MHz, TA= -40°C to 85°C. Typical values are at TA= 25°C,unless otherwise noted.) (Note 1) All production AC tests are done at 100MHz. Note 2:Typical minimum and maximum range of the detector. Typical Operating Characteristics (VCC= VSHDN= 3.0V, CCLPF= 0.1?F, TA= 25°C, unless otherwise noted.) OUTPUT VOLTAGEOUTPUT VOLTAGELOG CONFORMANCEvs. INPUT POWER (?MAX) vs. INPUT POWER (UCSP) vs. INPUT POWER (?MAX) 1.81.84 1.61.631.41.42) ) 文档下载 免费文档下载 http://doc.xuehai.net/ 1.21.2B1V d(( T) V( RUTO1.0U1.0OVR0OVR0.8E0.8-10.60.6-20.40.4-30.20.2 -4 -60 -50 -40 -30 -20 -10 10-60-50-40-30-20-10010-50-40-30-20-10010 INPUT POWER (dBm)INPUT POWER (dBm)INPUT POWER (dBm) ___________________________________________________________http://doc.xuehai.net /b85732741ed9dda2ddc25eaf1.html____________________________3 MAX4003 文档下载 免费文档下载 http://doc.xuehai.net/ 100MHz to 2500MHz, 45dB RF Detectorin a UCSPMAX4003 (VCC= VSHDN= 3.0V, CCLPF= 0.1?F, TA= 25°C, unless otherwise noted.) LOG CONFORMANCE vs. INPUT POWER (UCSP) 32ERROR (dB) 10-1-2-3-4-50 -40 -30 -20 -10 10 INPUT POWER (dBm) VOUT (V ) VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 0.1GHz (?MAX) 文档下载 免费文档下载 http://doc.xuehai.net/ 1.81.61.41.21.00.80.60.40.2-50 -40 -30 -20 -10 INPUT POWER (dBm) VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 0.1GHz (UCSP) 432ERROR (dB) VOUT (V) 10-1-2-3 1.81.61.41.21.00.80.60.40.2-50 -40 -30 -20 文档下载 免费文档下载 http://doc.xuehai.net/ -10 INPUT POWER (dBm) 4432ERROR (dB )ERROR (dB)ERROR (dB)10-1-2-3 -410-410 http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmlVOUT AND LOG CONFORMANCEvs. INPUT POWER AT 0.9GHz (?MAX) 1.81.61.4VOUT (V)1.21.00.80.60.40.2-50 -40 -30 -20 -10 INPUT POWER (dBm) 文档下载 免费文档下载 http://doc.xuehai.net/ -3-410 0.40.2 VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 0.9GHz (UCSP) 432ERROR (dB) VOUT (V)10-1-2 1.81.61.41.21.00.80.6 VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 1.9GHz (?MAX) 432ERROR (dB) VOUT (V)10-1-2-3 1.81.61.41.21.00.80.60.40.2-50 -40 -30 -20 -10 文档下载 免费文档下载 http://doc.xuehai.net/ INPUT POWER (dBm) -3-410 -410 43210-1-2 -50-40-30-20-100 INPUT POWER (dBm) VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 1.9GHz (UCSP) 1.81.61.4VOUT (V) 1.21.00.80.60.40.2-50 -40 -30 -20 -10 INPUT POWER (dBm) 文档下载 免费文档下载 http://doc.xuehai.net/ -3-410http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 2.5GHz (?MAX) 432ERROR (dB)VOUT (V)10-1-2 1.81.61.41.21.00.80.60.40.2-50 -40 -30 -20 -10 INPUT POWER (dBm) VOUT AND LOG CONFORMANCEvs. INPUT POWER AT 2.5GHz (UCSP) 432ERROR (dB)VOUT (V)10-1-2-3 1.81.61.41.21.00.80.60.40.2-50 -40 -30 文档下载 免费文档下载 http://doc.xuehai.net/ -20 -10 INPUT POWER (dBm) 43210-1-2-3 -410-410 4_______________________________________________________________________________ ________ 100MHz to 2500MHz, 45dB RF Detector in a UCSP Typical Operating Characteristics (continued) (VCC= VSHDN= 3.0V, CCLPF= 0.1?F, TA= 25°C, unless otherwise noted.) MAX4003 LOG SLOPE vs. FREQUENCY (?MAX) LOG SLOPE vs. FREQUENCY (UCSP) LOG SLOPE vs. SUPPLY VOLTAGE 文档下载 免费文档下载 http://doc.xuehai.net/ (?MAX)://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html 31LOG SLOPE (mV/dB) 3029282726 3130 LOG SLOPE (mV/dB) 292827262524 0.5 1.0 1.5 2.0 3130LOG SLOPE (mV/dB) 29 2827262524 0.5 文档下载 免费文档下载 http://doc.xuehai.net/ 1.0 1.5 2.0 32 25 2.5 242.5 3.0 3.5 4.0VCC (V) 4.5 5.0 5.5 2.5 FREQUENCY (GHz)FREQUENCY (GHz) 文档下载 免费文档下载 http://doc.xuehai.net/ LOG SLOPE vs. SUPPLY VOLTAGE (UCSP) LOG INTERCEPT vs. FREQUENCY (?MAX) LOG INTERCEPT vs. FREQUENCY (UCSP) 3231LOG SLOPE (mV/dB) 302928272625242.5 3.0 3.5 4.0VCC (V) 4.5 5.0-50-51-52LOG INTERCEPT (dBm) -53-54-55-56-57-58-59 -55-56LOG INTERCEPT (dBm) -57-58 -59 -60 文档下载 免费文档下载 http://doc.xuehai.net/ -61 0.5 1.0 1.http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html5 2.0 5.5 00.51.01.52.02.5 2.5 FREQUENCY (GHz) FREQUENCY (GHz) LOG INTERCEPT vs. SUPPLY VOLTAGE (?MAX) LOG INTERCEPT vs. SUPPLY VOLTAGE (UCSP) 文档下载 免费文档下载 http://doc.xuehai.net/ RFIN INPUT IMPEDANCEvs. FREQUENCY (?MAX) 2500 2000RESISTANCE (?) -49-50-51LOG INTERCEPT (dBm) -52-53-54-55-56-57-58-59-602.5 3.0 3.5 4.0VCC (V) 4.5 5.0 -55-56LOG INTERCEPT (dBm) -57-58-59-60-61 2.5 3.0 3.5 文档下载 免费文档下载 http://doc.xuehai.net/ 4.0VCC (V) 4.5 5.0 0-100-200-300-400 -500 -600 REACTANCE (?) 1500 1000 500 -700 -800 1.0 1.5 2.0 2.5 5.5 文档下载 免费文档下载 http://doc.xuehai.net/ 0.5 FREQUENCY (GHz) 5.5 _____________________________________________________________http://doc.xuehai.n et/b85732741ed9dda2ddc25eaf1.html__________________________5 100MHz to 2500MHz, 45dB RF Detectorin a UCSP03 Typical Operating Characteristics (continued) (VCC= VSHDN= 3.0V, CCLPF= 0.1?F, TA= 25°C, unless otherwise noted.) 04XAM6RFIN INPUT IMPEDANCESUPPLY CURRENT vs. FREQUENCY (UCSP) vs. SHUTDOWN VOLTAGE 2500 07 -100 62000-200) 文档下载 免费文档下载 http://doc.xuehai.net/ 5A) ) ?m( E1500 -300?( ( T4CENNCEAT-400NRAR3STUICCS1000 ER -500 AEYRLP2PU -600S500 1 -700 0 0 -800 -1 0.5 1.0 1.5 2.0 2.5 文档下载 免费文档下载 http://doc.xuehai.net/ 0.20.40.60.81.01.21.41.61.82.0 FREQUENCY (GHz) V (V) POWER-ON RESPONSE TIME POWER-DOWN RESPONSE TIME 5 2cot 3004XAMV1.5V/divVSHDN 1.5V/div VOUT500mV/div VOUT500mV/div 2?s/div 2?s/div http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmlMAXIMUM OUTPUT VOLTAGE OUTPUT NOISE SPECTRAL DENSITY 文档下载 免费文档下载 http://doc.xuehai.net/ vs. SUPPLY VOLTAGE 1091.68 8) 71.666/ Vn( Y51.64TISN4) 1.62EVD( TLAR3UO1.60VTCE1.58PS E2 SI1.56ON1.54 11.52 100 1k 10k 100k 1M 10M 2.5 文档下载 免费文档下载 http://doc.xuehai.net/ 3.0 3.5 4.04.5 5.0 5.5 FREQUENCY (Hz) VCC (V) ________________________________________________________________________________ _______ 100MHz to 2500MHz, 45dB RF Detector in a UCSP (VCC= VSHDN= 3.0V, CCLPF= 0.1?F, TA= 25°C, unless otherwise noted.) MINIMUM OUTPUT VOLTAGESMALL-SIGNAL STEP RESPONSE vs. SUPPLY VOLTAGE (CCLPF = 150pF) 0.410.405500.395000.38) 文档下载 免费文档下载 http://doc.xuehai.net/ 450V) (V T0.37mU(O T400V0.36UOV0.353500.343000.33250 0.32 2.5 3.0 3.5http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html 4.04.5 5.0 5.5 V1?s/div CC (V) SMALL-SIGNAL STEP RESPONSE LARGE-SIGNAL STEP RESPONSE (CCLPF = 1000pF) (CCLPF = 150pF) 文档下载 免费文档下载 http://doc.xuehai.net/ 550160050014004501200) ) VmVm(( T400T1000UUOOV350V800300600250 400 1?s/div1?s/div LARGE-SIGNAL STEP RESPONSE SMALL-SIGNAL BANDWIDTH (CCLPF = 1000pF) vs. CCLPF 10 1600 1400) z1200HM() VYmC( N1 T1000EUUOVQ800ERF600400 文档下载 免费文档下载 http://doc.xuehai.net/ 0.1 1?s/div 100 100010,000 100,000 CCLPF (pF) ________________________________________________________________________________ _______7 MAX4003 100MHz to 2500MHz, 45dB RF Detectorin a UCSPMAX4003 The MAX4003 logarithmic amplifier comprises fourmain amplifier/limiter stages, each with a small-signalgain of http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html10dB. The output stage of each amplifier/limiterstage is applied to a full-wave rectifier (detector). Adetector stage also precedes the first stage. In total,five detectors, each separated by 10dB, comprise thelogarithmic amplifier strip (see Functional Diagram).A portion of the PA output power is coupled into RFINof the logarithmic amplifier detector through a direction-al coupler, and is applied to the logarithmic amplifierstrip. Each detector stage generates a rectified current,and these currents are summed to form a logarithmicfunction. The detected output is applied to a high-gaintransconductance 文档下载 免费文档下载 http://doc.xuehai.net/ (gm) stage, which is buffered andthen applied to OUT. OUT is applied to an ADC typical-ly found in the baseband IC which, in turn, controls the In a control loop, the detector output voltage range isapproximately 0.36V for the minimum input signal, -45dBm, to 1.45V at the maximum input range, 0dBm.The logarithmic intercept of thhttp://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmle detector output withrespect to the RF input can be obtained by drawing abest fit line of the Output Voltage vs. RF Input Powergraph. The logarithmic slope is defined as the changein the detector output vs. the change in RF input. TheMAX4003 slope at low frequencies is approximately25.5mV/dB. Variation in temperature and supply volt-age does not alter the slope significantly, as shown inthe Typical Operating Characteristics. Filter Capacitor and Transient Response In general, the choice of filter only partially determinesthe time-domain response of a PA detector loop.However, some simple conventions may be applied todiscuss transient response. A large filter capacitor,CCLPF, dominates time-domain response, but the loopbandwidth remains a factor of the PA gain-control range(see Typical Operating Characteristics). The bandwidthis maximized at power outputs near the center of thePA’s range and minimized at the low and http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmlhigh power lev-els, when the slope of the gain control curve is lowest.A smaller valued CCLPFresults in an increased-loopbandwidth inversely proportional to the capacitor value.Inherent phase lag in the PA’s control path, usuallycaused by parasitics at the OUT pin, ultimately resultsin the addition of complex poles in the AC loop equa-tion. To avoid this secondary effect, experimentallydetermine the lowest usable CCLPFfor the power ampli- Figure 1. MAX4003 Typical Application Circuit8 文档下载 免费文档下载 http://doc.xuehai.net/ ________________________________________________________________________________ _______ 100MHz to 2500MHz, 45dB RF Detector in a UCSP fier of interest. This requires full consideration of theintricacies of the PA detector control function. TheUCSP Reliability worst-case condition, where the PA output is smallestThe UCSP represents a unique package that greatly(gain function is steepest), should be usehttp://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmld because thereduces board space compared to other packages.PA control function is nonlinear. An additional zero canUCSP reliability is integrally linked to the user’s assem-be added to improve loop dynamics by placing a resis-bly methods, circuit board material, and usage environ-tor in series with CCLPF. ment. The user should closely review these areas whenconsidering use of a UCSP. This form factor may notWaveform Considerations perform equally to a packaged product through tradi-Although the input level of the MAX4003 is specified intional mechanical reliability tests. Performance throughdBm, the logarithmic amplifier actually responds to rec-operating life test and moisture resistance remainstified voltage signals rather than a true RMS power. It isuncompromised as it is primarily determined by theimportant to realize that input signals with identical root-wafer fabrication process. Mechanical stress perfor-meanhttp://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html-square power but with unique waveforms resultmance is a greater consideration for a UCSP. UCSPin 文档下载 免费文档下载 http://doc.xuehai.net/ different logarithmic outputs. solder joint contact integrity must be considered sinceDiffering signal waveforms result in either an upward orthe package is attached through direct solder contactdownward shift in the logarithmic intercept. However,to the user’s PC board. Testing done to characterizethe logarithmic slope remains the same. the UCSP reliability performance shows that it can per-Layout Considerations form reliably through environmental stresses. Results ofAs with any RF circuit, the MAX4003 circuit layoutenvironmental stress tests and additional usage dataaffects performance. To ensure maximum power trans-and recommendations are detailed in the UCSP fer between 50?sources and the MAX4003 input, suit-application note found on Maxim’s website,able matching networks should be implemented. Thewww.maxim-http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.htmlic.com. VCCinput should be bypassed as close as possible tothe device with multiple vias connecting the capacitorto the ground plane. TRANSISTOR COUNT: 358 ________________________________________________________________________________ _______9 MAX4003 100MHz to 2500MHz, 45dB RF Detectorin a UCSPMAX4003 Package Information 文档下载 免费文档下载 http://doc.xuehai.net/ (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to 10______________________________________________________________________________ ________ 100MHz to 2500MHz, 45dB RF Detector in a UCSP Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to MAX4003 100MHz to 2500MHz, 45dB RF Detectorin a UCSPMAX40http://doc.xuehai.net/b85732741ed9dda2ddc25eaf1.html03 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600?2003 Maxim Integrated Products 文档下载 免费文档下载 http://doc.xuehai.net/ Printed USA is a registered trademark of Maxim Integrated Products. 文档下载网是专业的免费文档搜索与下载网站,提供行业资料,考试资料,教 学课件,学术论文,技术资料,研究报告,工作范文,资格考试,word 文档, 专业文献,应用文书,行业论文等文档搜索与文档下载,是您文档写作和查找 参考资料的必备网站。 文档下载 http://doc.wendoc.com/ 亿万文档资料,等你来免费下载