Precision Low Power
Single-Supply JFET Amplifiers
Data Sheet
AD8625/AD8626/AD8627
FEATURES
SC70 package
Very low IB: 1 pA max
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
PIN CONFIGURATIONS
8-Lead SOIC
(R-8 Suffix)
5-Lead SC70
(KS Suffix)
OUT A
V–
1
2
3
5
4
V+
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
ATEs
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–
AD8625
AD8625
+IN B
–IN B
OUT B
10 +IN C
7
8
9
8
–IN C
OUT C
Figure 1.
GENERAL DESCRIPTION
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, which includes automotive sensors.
The 5 MHz bandwidth and low offset are ideal for precision filters.
The AD862x is fully specified over the industrial temperature
range. (−40°C to +85°C). e AD8627 is available in both
5-lead SC70 and 8-lead SOIC surface-mount packages (SC70
packaged parts are available in tape and reel only). The AD8626
is available in MSOP and SOIC packages, while the AD8625 is
available in TSSOP and SOIC packages.
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.
Rev. F
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