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ADA4932-1YCPZ-RL Datasheet(PDF) 1 Page - Analog Devices |
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ADA4932-1YCPZ-RL Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page Low Power Differential ADC Driver ADA4932-1/ADA4932-2 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved. FEATURES High performance at low power High speed −3 dB bandwidth of 560 MHz, G = 1 0.1 dB gain flatness to 300 MHz Slew rate: 2800 V/µs, 25% to 75% Fast 0.1% settling time of 9 ns Low power: 9.6 mA per amplifier Low harmonic distortion 100 dB SFDR @ 10 MHz 90 dB SFDR @ 20 MHz Low input voltage noise: 3.6 nV/√Hz ±0.5 mV typical input offset voltage Externally adjustable gain Can be used with fractional differential gains Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Wide supply range: +3 V to ±5 V Available in 16-lead and 24-lead LFCSP packages APPLICATIONS ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Line drivers GENERAL DESCRIPTION The ADA4932-x is the next generation AD8132 with higher performance, and lower noise and power consumption. It is an ideal choice for driving high performance ADCs as a single-ended- to-differential or differential-to-differential amplifier. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4932-x output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products. With the ADA4932-x, differential gain configurations are easily realized with a simple external four-resistor feedback network that determines the closed-loop gain of the amplifier. The ADA4932-x is fabricated using the Analog Devices, Inc., proprietary silicon-germanium (SiGe) complementary bipolar process, enabling it to achieve low levels of distortion and noise at low power consumption. The low offset and excellent dynamic performance of the ADA4932-x make it well suited for a wide variety of data acquisition and signal processing applications. FUNCTIONAL BLOCK DIAGRAMS 1 –FB 2 +IN 3 –IN 4 +FB 11 –OUT 12 PD 10 +OUT 9 VOCM ADA4932-1 Figure 1. ADA4932-1 ADA4932-2 1 –IN1 2 +FB1 3 +VS1 4 +VS1 5 –FB2 6 +IN2 15 –VS2 16 –VS2 17 VOCM1 18 +OUT1 14 PD2 13 –OUT2 Figure 2. ADA4932-2 –140 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 100k 1M 10M 100M FREQUENCY (Hz) VOUT, dm = 2V p-p HD2, G = 1 HD3, G = 1 HD2, G = 2 HD3, G = 2 Figure 3. Harmonic Distortion vs. Frequency at Various Gains The ADA4932-x is available in a Pb-free, 3 mm × 3 mm 16-lead LFCSP (ADA4932-1, single) or a Pb-free, 4 mm × 4 mm 24-lead LFCSP (ADA4932-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4932-1 and the ADA4932-2 are specified to operate over the −40°C to +105°C temperature range; both operate on supplies between +3 V and ±5 V. |
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