30 V, High Speed, Low Noise, Low Bias

Current, JFET Operational Amplifier

Data Sheet

ADA4627-1/ADA4637-1

Rev. F

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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

PIN CONFIGURATIONS

Figure 1. 8-Lead SOIC_N (R-8)

Figure 2. 8-Lead SOIC_N (R-8)

Figure 3. 8-Lead LFCSP_VD (CP-8-13)

GENERAL DESCRIPTION

The ADA4627-1/ADA4637-1 are wide bandwidth precision

amplifiers featuring low noise, very low offset, drift, and bias

current. The devices 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.

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).

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

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)

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)

NOTES

1. NC = NO CONNECT.

2. IT IS RECOMMENDED

THAT THE EXPOSED PAD BE

CONNECTED TO V–.

3

+IN

4

V–

1

NC

2

–IN

6 OUT

5NC

8NC

7V+

ADA4627-1/

ADA4637-1

TOP VIEW