Precision Low Power

Single-Supply JFET Amplifier

AD8627/AD8626/AD8625

Rev. B

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FEATURES

SC70 package

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

No phase reversal

APPLICATIONS

Photodiode amplifiers

ATE

Line-powered/battery-powered instrumentation

Industrial controls

Automotive sensors

Precision filters

Audio

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 including automotive sensors.

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.

PIN CONFIGURATIONS

2

3

1

4

5

OUT A

V–

+IN

V+

–IN

AD8627

5-Lead SC70

(KS Suffix)

NC

–IN

V+

2

+IN

OUT

3

V–

NC

4

NC

1

7

6

5

8

AD8627

NC = NO CONNECT

8-Lead SOIC

(R-8 Suffix)

OUT A

–IN A

OUT B

2

+IN A

–IN B

3

V–

+IN B

4

V+

1

7

6

5

8

AD8626

8-Lead SOIC

(R-8 Suffix)

V+

OUT A

OUT B

–IN A

–IN B

+IN A

+IN B

V–

AD8626

8-Lead MSOP

(RM-Suffix)

5

8

4

1

OUT A

OUT D

114

–IN A

–IN D

213

+IN A

+IN D

312

V+

V–

411

+IN B

+IN C

510

–IN B

–IN C

69

OUT B

OUT C

78

AD8625

14-Lead SOIC

(R-Suffix)

OUT D

OUT A

–IN D

–IN A

+IN D

+IN A

V–

V+

+IN C

+IN B

–IN C

–IN B

OUT C

OUT B

AD8625

14-Lead TSSOP

(RU-Suffix)

8

14

7

1

Figure 1.