ADA4932-1_16 Datasheet, PDF (1/27 Pages) Analog Devices – Low Power, Differential ADC Driver

Data Sheet
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
Input common-mode range shifted down by 1 VBE
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 ADA4932-1/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.
Low Power,
Differential ADC Driver
ADA4932-1/ADA4932-2
FUNCTIONAL BLOCK DIAGRAM
ADA4932-1
–FB 1
+IN 2
–IN 3
+FB 4
12 PD
11 –OUT
10 +OUT
9 V_OCM
Figure 1. ADA4932-1
ADA4932-2
–IN1 1
+FB1 2
+V_S1 3
+V_S1 4
–FB2 5
+IN2 6
18 +OUT1
17 V_OCM1
16 –V_S2
15 –V_S2
14 PD2
13 –OUT2
Figure 2. ADA4932-2
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.
Rev. E
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] ©2008–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com