Data Sheet

ADA4932-1/ADA4932-2

Low Power, Differential ADC Driver

Rev. F

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FEATURES

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High performance at low power

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High speed

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−3 dB bandwidth of 560 MHz, G = 1

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0.1 dB gain flatness to 300 MHz

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Slew rate: 2800 V/µs, 25% to 75%

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Fast 0.1% settling time of 9 ns

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Low power: 9.6 mA per amplifier

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Low harmonic distortion

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100 dB SFDR at 10 MHz

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90 dB SFDR at 20 MHz

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Low input voltage noise: 3.6 nV/√Hz

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±0.5 mV typical input offset voltage

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Externally adjustable gain

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Can be used with gains less than 1

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Differential-to-differential or single-ended-to-differential operation

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Adjustable output common-mode voltage

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Input common-mode range shifted down by 1 VBE

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Wide supply range: +3 V to ±5 V

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Available in 16-lead and 24-lead LFCSP packages

APPLICATIONS

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ADC drivers

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Single-ended-to-differential converters

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IF and baseband gain blocks

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Differential buffers

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Line drivers

FUNCTIONAL BLOCK DIAGRAM

Figure 1. ADA4932-1

Figure 2. ADA4932-2

GENERAL DESCRIPTION

The ADA4932-1/ADA4932-2 are the next generation AD8132 with

higher performance and lower noise and power consumption.

They are 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 ADA4932-1/

ADA4932-2 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 ADA4932-1/ADA4932-2, differential gain configurations

are easily realized with a simple external four-resistor feedback

network that determines the closed-loop gain of the amplifier.

The ADA4932-1/ADA4932-2 were fabricated using the Analog De-

vices, 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

ADA4932-1/ADA4932-2 make them well suited for a wide variety of

data acquisition and signal processing applications.

The ADA4932-1 is available in a 16-lead LFCSP, and the

ADA4932-2 is available in a 24-lead LFCSP. The pinouts are

optimized to facilitate the printed circuit board (PCB) layout and

minimize distortion. The ADA4932-1/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.