GENERAL DESCRIPTION

The AD8610/AD8620 are very high precision JFET input amplifiers featuring ultralow offset voltage and drift, very low input voltage and current noise, very low input bias current, and wide bandwidth. Unlike many JFET amplifiers, the AD8610/AD8620 input bias current is low over the entire operating temperature range. The AD8610/AD8620 are stable with capacitive loads of

over 1000 pF in noninverting unity gain; much larger capacitive loads can be driven easily at higher noise gains. The AD8610/AD8620 swing to within 1.2 V of the supplies even with a 1 kΩ

load, maximizing dynamic range even with limited supply voltages. Outputs slew at 50 V/μs in either inverting or noninverting gain configurations, and settle to 0.01 accuracy in less than

600 ns. Combined with high input impedance, great precision and very high output drive, the AD8610/AD8620 are ideal amplifiers for driving high performance ADC inputs and buffering DAC converter outputs.

FEATURES

Low noise: 6 nV/√Hz

Low offset voltage: 100 μV maximum

Low input bias current: 10 pA maximum

Fast settling: 600 ns to 0.01

Low distortion

Unity gain stable

No phase reversal

Dual-supply operation: ±5 V to ±13 V

APPLICATIONS

Photodiode amplifier

ATE

Instrumentation

Sensors and controls

High performance filters

Fast precision integrators

High performance audio