1 nV/√Hz, Low Power, Rail-to-Rail
Output Amplifier
Known Good Die
ADA4897-2-KGD
Rev. C 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: 781.329.4700 ©2014–2019 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Low wideband noise
1 nV/√Hz
2.8 pA/√Hz
Low 1/f noise: 2.4 nV/√Hz at 10 Hz
Low distortion: −115 dBc at 100 kHz, V
OUT
= 2 V p-p
Low input offset voltage: 500 μV maximum
High speed
−3 dB bandwidth: 230 MHz (G = +1)
Slew rate: 120 V/μs
Settling time to 0.1%: 45 ns
Rail-to-rail output
Wide supply range: 3 V to 10 V
Disable feature
Known good die (KGD): these die are fully guaranteed to
data sheet specifications
APPLICATIONS
Low noise preamplifiers
Ultrasound amplifiers
Phase-locked loop (PLL) filters
High performance ADC drivers
Digital-to-analog converter (DAC) buffers
GENERAL DESCRIPTION
The ADA4897-2-KGD
1
is a unity-gain stable, low noise, rail-to-
rail output, high speed voltage feedback amplifier that has a
quiescent current of 3 mA. With a 1/f noise of 2.4 nV/√Hz at
10 Hz and a spurious-free dynamic range of −80 dBc at 2 MHz,
the ADA4897-2-KGD is an ideal solution in a variety of
applications, including ultrasound, low noise preamplifiers, and
drivers of high performance analog-to-digital converters (ADCs).
The Analog Devices, Inc., proprietary next generation silicon
germanium (SiGe) bipolar process and innovative architecture
enable such high performance amplifiers.
The ADA4897-2-KGD has a 230 MHz bandwidth, a 120 V/μs
slew rate, and settles to 0.1% in 45 ns. With a wide supply
voltage range of 3 V to 10 V, the ADA4897-2-KGD is ideal for
systems that require high dynamic range, precision, low power,
and high speed.
The ADA4897-2-KGD is rated to work over the industrial
temperature range of −40°C to +125°C.
Additional application and technical information can be found
in the ADA4897-2 data sheet.
1
Protected by U.S. Patent Numbers 6,486,737B1 and 6,518,842B1.
ADA4897-2-KGD Known Good Die
Rev. C | Page 2 of 10
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
±5 V Supply ................................................................................... 3
+5 V Supply ................................................................................... 4
+3 V Supply ................................................................................... 6
Absolute Maximum Ratings ............................................................8
ESD Caution...................................................................................8
Pin Configuration and Function Descriptions ..............................9
Outline Dimensions ....................................................................... 10
Die Specifications and Assembly Recommendations ........... 10
Ordering Guide .......................................................................... 10
REVISION HISTORY
2/2019—Rev. B to Rev. C
Changes to Product Title, Features Section, Applications
Section, and General Description Section .................................... 1
3/2015—Rev. A to Rev. B
Changes to Figure 1 and Table 5 ..................................................... 9
Changes to Table 6 .......................................................................... 10
Update Outline Dimensions ......................................................... 10
Changes to Ordering Guide .......................................................... 10
11/2014—Rev. 0 to Rev. A
Change to Thickness Parameter, Table 6 ..................................... 10
4/14—Revision 0: Initial Version