Low Power,

Differential ADC Driver

Data Sheet

ADA4932-1/ADA4932-2

Rev. E

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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 at 10 MHz

90 dB SFDR at 20 MHz

Low input voltage noise: 3.6 nV/√Hz

±0.5 mV typical input offset voltage

Externally adjustable gain

Can be used with gains less than 1

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

FUNCTIONAL BLOCK DIAGRAM

–FB

+IN

–IN

+FB

–OUT

PD

+OUT

12

11

10

1

3

49

2

ADA4932-1

Figure 1. ADA4932-1

2

1

3

4

5

6

18

17

16

15

14

13

+IN2

–FB2

+FB1

–IN1

–OUT2

PD2

+OUT1

ADA4932-2

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 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

ADA4932-1/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.