Low Power JFET-Input Op Amps

ADA4062-2/ADA4062-4

Rev. B

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FEATURES

Low input bias current: 50 pA maximum

Offset voltage

1.5 mV maximum for B grade (ADA4062-2 SOIC package)

2.5 mV maximum for A grade

Offset voltage drift: 5 μV/°C typical

Slew rate: 3.3 V/μs typical

CMRR: 90 dB typical

Low supply current: 165 μA typical

High input impedance

Unity-gain stable

±5 V to ±15 V dual-supply operation

Packaging

8-lead SOIC, 8-lead MSOP, 10-lead LFCSP, 14-lead TSSOP, and

16-lead LFCSP packages

APPLICATIONS

Power controls and monitoring

Active filters

Industrial/process controls

Body probe electronics

Data acquisition

Integrators

Input buffering

GENERAL DESCRIPTION

The ADA4062-2 and ADA4062-4 are dual and quad JFET-input

amplifiers with industry-leading performance. They offer lower

power, offset voltage, drift, and ultralow bias current. The

ADA4062-2 B grade (SOIC package) features a typical low offset

voltage of 0.5 mV, an offset drift of 5 μV/°C, and a bias current

of 2 pA.

The ADA4062 family is ideal for various applications, including

process controls, industrial and instrumentation equipment,

active filtering, data conversion, buffering, and power control

and monitoring. With a low supply current of 165 μA per

amplifier, they are well suited for lower power applications.

The ADA4062 family is also specified for the extended industrial

temperature range of −40°C to +125°C. The ADA4062-2 is

available in lead-free, 8-lead SOIC, 8-lead MSOP, and 10-lead

LFCSP (1.6 mm × 1.3 mm × 0.55 mm) packages, while the

ADA4062-4 is available in lead-free, 14-lead TSSOP and

16-lead LFCSP packages.

PIN CONFIGURATIONS

OUT A 1

–IN A 2

+IN A 3

V– 4

V+

8

OUT B

7

–IN B

6

+IN B

5

ADA4062-2

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead Narrow-Body SOIC and 8-Lead MSOP

7

8

3

2

–IN A

+IN A

OUT B

–IN B

NC = NO CONNECT

TOP VIEW

(Not to Scale)

ADA4062-2

Figure 2. 10-Lead LFCSP

ADA4062-4

1

2

3

4

5

6

7

–IN A

+IN A

V+

OUT B

–IN B

+IN B

OUT A

14

13

12

11

10

9

8

–IN D

+IN D

V–

OUT C

–IN C

+IN C

OUT D

TOP VIEW

(Not to Scale)

Figure 3. 14-Lead TSSOP

NOTES

1. NC = NO CONNECT.

2. IT IS RECOMMENDED TO CONNECT THE EXPOSED PAD TO V–.

ADA4062-4

TOP VIEW

(Not to Scale)

–IN A

+IN A

V+

+IN B

–IN D

+IN D

V–

+IN C

12

11

10

1

3

4

9

2

Figure 4. 16-Lead LFCSP

Table 1. Low Power Op Amps

Precision

CMOS

Precision

High Bandwidth

High

Bandwidth

Single

AD8663

AD8641

Dual

AD8667

AD8642

AD8682

Quad

AD8669

AD8643

AD8684