ANALOG DEVICES ADA4627-1, ADA4637-1 Service Manual
30 V, High Speed, Low Noise, Low Bias
ADA4627-1/ADA4637-1
NULL
1
–IN
2
+IN
3
V–
4
NC
8
V+
7
OUT
6
NULL
5
NC = NO CONNECT
ADA4627-1
TOP VIEW
(Not to Scale)
07559-001
NULL
1
–IN
2
+IN
3
V–
4
NC
8
V+
7
OUT
6
NULL
5
NC = NO CONNECT
ADA4637-1
TOP VIEW
(Not to Scale)
07559-103
PIN 1
INDICATOR
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED
THAT THE EXPOSED PAD BE
CONNECTED TO V–.
1NC
2–IN
3+IN
4V–
7 V+
8 NC
6 OUT
5 NC
TOP VIEW
(Not toS cale)
ADA4627-1/
ADA4637-1
07559-002
FEATURES
Low offset voltage: 200 µV maximum
Offset drift: 1 µV/°C typical
Very low input bias current: 5 pA maximum
Extended temperature range: −40°C to +125°C
±5 V to ±15 V dual supply
ADA4627-1 GBW: 19 MHz
ADA4637-1 GBW: 79 MHz
Voltage noise: 6.1 nV/√Hz at 1 kHz
ADA4627-1 slew rate: 82 V/µs
ADA4637-1 slew rate: 170 V/µs
High gain: 120 dB typical
High CMRR: 116 dB typical
High PSRR: 112 dB typical
APPLICATIONS
High impedance sensors
Photodiode amplifier
Precision instrumentation
Phase-locked loop filters
High end, professional audio
DAC output amplifier
ATE
Medical
Current, JFET Operational Amplifier
PIN CONFIGURATIONS
Figure 1. 8-Lead SOIC_N (R-8)
Figure 2. 8-Lead SOIC_N (R-8)
GENERAL DESCRIPTION
The ADA4627-1/ADA4637-1 are wide bandwidth precision
amplifiers featuring low noise, very low offset, drift, and bias
current. The parts operate from ±5 V to ±15 V dual supply.
The ADA4627-1/ADA4637-1 provide benefits previously found
in few amplifiers. These amplifiers combine the best specifications
of precision dc and high speed ac op amps. The ADA4637-1 is
a decompensated version of the ADA4627-1 and is stable at a
noise gain of 5 or greater.
With a typical offset voltage of only 70 µV, drift of less than
1 µV/°C, and noise of only 0.86 µV p-p (0.1 Hz to 10 Hz), the
ADA4627-1/ADA4637-1 are suited for applications where error
sources cannot be tolerated.
Table 1. High Speed Precision Op Amps
Supply 5 V Low Cost 5 V 26 V Low Power 30 V Low Cost 30 V
Single AD8615 AD8651 AD8610 AD8510 ADA4627-1/ADA4637-1
Dual AD8616 AD8652 AD8620 AD8512
Quad AD8618 AD8513
Rev. D
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.
Figure 3. 8-Lead LFCSP_VD (CP-8-2)
The ADA4627-1/ADA4637-1 are specified for both the
industrial temperature range of −25°C to +85°C and the
extended industrial temperature range of −40°C to +125°C. The
ADA4627-1/ ADA4637-1 are available in tiny 8-lead LFCSP
and 8-lead SOIC packages.
The ADA4627-1/ADA4637-1 are members of a growing series
of high speed, precision op amps offered by Analog Devices,
Inc. (see Table 1).
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113 ©2009-2010 Analog Devices, Inc. All rights reserved.
www.analog.com
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