4 MHz, 7 nV/√Hz, Low Offset and

Drift, High Precision Amplifier

Data Sheet

ADA4077-2

Rev. 0

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FEATURES

Low offset voltage (maximum specifications)

B-Grade: 25 µV (SOIC)

A-Grade: 50 µV (SOIC), 90 µV (MSOP)

Very low offset voltage drift

B-Grade: 0.25 µV/°C (SOIC)

A-Grade: 0.55 µV/°C (SOIC) and 1.2 µV/°C (MSOP), specified

over −40°C to +125°C, MSL1 rated

Low input bias current: 1.0 nA maximum

Low noise: 7 nV/√Hz typical

Low supply current: 400 µA per amplifier typical

Wide bandwidth: 4.0 MHz

Dual-supply operation: ±5 V to ±15 V

Unity-gain stable

No phase reversal

APPLICATIONS

Process control front-end amplifiers

Wireless base station control circuits

Optical network control circuits

Instrumentation

Sensors and controls: thermocouples, resistor thermal

detectors (RTDs), strain bridges, and shunt current

measurements

Precision filters

GENERAL DESCRIPTION

The ADA4077-2 is a dual amplifier featuring extremely low offset

voltage and drift and low input bias current, noise, and power

consumption. Outputs are stable with capacitive loads of more

than 1000 pF with no external compensation.

Applications for this amplifier include sensor signal conditioning

(such as thermocouples, RTDs, strain gauges), process control

front-end amplifiers, and precision diode power measurement

in optical and wireless transmission systems. The ADA4077-2 is

useful in line powered and portable instrumentation, precision

filters, and voltage or current measurement and level setting.

Unlike the amplifiers of some competitors, the ADA4077-2 is

specified over the extended industrial temperature range for

operation from −40°C to +125°C with MSL1 rating for the most

demanding operating environments. It is available in 8-lead SOIC

(including the B-Grade) and MSOP (A-Grade only) packages.

PIN CONNECTION DIAGRAMS

Figure 1. ADA4077-2 Pin Configuration, 8-Lead MSOP

Figure 2. ADA4077-2 Pin Configuration, 8-Lead SOIC_N

Figure 3. Offset Voltage Distribution

Table 1. Evolution of Precision Devices by Generation

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

ADA4077-2

TOP VIEW

(Not to Scale)

V+

8

OUT B

7

–IN B

6

+IN B

5

ADA4077-2

TOP VIEW

(Not to Scale)

0

20

40

60

80

100

120

140

160

180

200

SOIC

Op Amp

1st

2nd

3rd

4th

5th

6th

Single

OP07

OP77

OP177

OP1177

AD8677

Dual

OP2177

ADA4077-2

Quad

OP4177