Data Sheet

ADA4077-1/ADA4077-2/ADA4077-4

4 MHz, 7 nV/√Hz, Low Offset and Drift, High Precision Amplifiers

Rev. F

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FEATURES

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Offset voltage:

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25 µV maximum at 25°C (B grade, 8-lead SOIC, single/ dual)

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50 µV maximum at 25°C (A grade, 8-lead SOIC, single/ dual)

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50 µV maximum at 25°C (A grade, 14-lead SOIC, quad)

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Offset voltage drift:

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0.25 µV/°C maximum (B grade, 8-lead SOIC, single/dual)

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0.55 µV/°C maximum (A grade, 8-lead SOIC, single/dual)

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0.75 µV/°C maximum (A grade, 14-lead SOIC, quad)

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MSL1 rated

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Low input bias current: 1 nA maximum at TA = 25°C

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Low voltage noise density: 6.9 nV/√Hz typical at f = 1000 Hz

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CMRR, PSRR, and AV > 120 dB minimum

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Low supply current: 400 µA per amplifier typical

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Wide gain bandwidth product: 3.9 MHz at ±5 V

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Dual-supply operation:

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Specified at ±5 V to ±15 V

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Operates at ±2.5 V to ±15 V

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Unity gain stable

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No phase reversal

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Long-term offset voltage drift (10,000 hours): 0.5 µV typical

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Temperature hysteresis: 1 µV typical

APPLICATIONS

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Process control front-end amplifiers

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Optical network control circuits

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Instrumentation

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Precision sensors and controls

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Precision filters

PIN CONNECTION DIAGRAMS

Figure 1. ADA4077-1, 8-Lead SOIC and 8-Lead MSOP

Figure 2. ADA4077-2, 8-Lead MSOP and 8-Lead SOIC

Figure 3. ADA4077-4, 14-Lead TSSOP and 14-Lead SOIC

GENERAL DESCRIPTION

The single ADA4077-1, dual ADA4077-2, and quad ADA4077-4

amplifiers feature 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, resistance temperature detectors (RTDs),

strain gages), process control front-end amplifiers, and precision

diode power measurement in optical and wireless transmission

systems. The ADA4077-1/ADA4077-2/ADA4077-4 are useful in line

powered and portable instrumentation, precision filters, and voltage

or current measurement and level setting.

Unlike other amplifiers, the ADA4077-1/ADA4077-2/ADA4077-4

have an MSL1 rating that is compliant with the most stringent

of assembly processes, and they are specified over the extended

industrial temperature range from −40°C to +125°C for the most

demanding operating environments.

Table 1. Evolution of Precision Devices by Generation

Op Amp First

Second

Third

Fourth

Fifth

Sixth

Single

OP07

OP77

OP177

OP1177

AD8677

ADA4077-1

Dual

OP2177

ADA4077-2

Quad

OP4177

ADA4077-4