Precision Low Power
Single-Supply JFET Amplifier
AD8627/AD8626/AD8625
FEATURES
PIN CONFIGURATIONS
SC70 package
Very low IB: 1 pA max
8-Lead SOIC
(R-8 Suffix)
5-Lead SC70
(KS Suffix)
OUT A
V–
1
2
3
5
4
V+
Single-supply operation: 5 V to 26 V
Dual-supply operation: 2.5 V to 13 V
Rail-to-rail output
Low supply current: 630 µA/amp typ
Low offset voltage: 500 µV max
Unity gain stable
NC
–IN
+IN
V–
1
2
3
4
8
7
6
5
NC
V+
AD8627
AD8627
+IN
–IN
OUT
NC
NC = NO CONNECT
No phase reversal
8-Lead SOIC
(R-8 Suffix)
8-Lead MSOP
(RM-Suffix)
APPLICATIONS
Photodiode amplifiers
ATE
OUT A
–IN A
+IN A
V–
1
8
V+
OUT A
–IN A
+IN A
V–
1
8
V+
OUT B
–IN B
+IN B
AD8626
2
3
4
7
6
5
OUT B
–IN B
+IN B
AD8626
4
5
Line-powered/battery-powered instrumentation
Industrial controls
Automotive sensors
Precision filters
Audio
14-Lead SOIC
(R-Suffix)
14-Lead TSSOP
(RU-Suffix)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
14
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT A
–IN A
+IN A
V+
1
2
3
4
5
6
7
14 OUT D
13 –IN D
12 +IN D
11 V–
GENERAL DESCRIPTION
AD8625
The AD862x is a precision JFET input amplifier. It features
true single-supply operation, low power consumption, and
rail-to-rail output. The outputs remain stable with capacitive
loads of over 500 pF; the supply current is less than 630 µA/amp.
Applications for the AD862x include photodiode transimpedance
amplification, ATE reference level drivers, battery management,
both line powered and portable instrumentation, and remote
sensor signal conditioning including automotive sensors.
AD8625
+IN B
–IN B
OUT B
10 +IN C
7
8
9
8
–IN C
OUT C
Figure 1.
The AD862x’s ability to swing nearly rail-to-rail at the input
and rail-to-rail at the output enables it to be used to buffer
CMOS DACs, ASICs, and other wide output swing devices in
single-supply systems.
The 5 MHz bandwidth and low offset are ideal for precision
filters.
The AD862x is fully specified over the industrial temperature
range. (–40° to +85°) The AD8627 is available in both 5-lead
SC70 and 8-lead SOIC surface-mount packages. The SC70
packaged parts are available in tape and reel only. The AD8626
is available in an MSOP package.
Rev. B
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.
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