GENERAL DESCRIPTION

The AD8510/AD8512/AD8513 are single-, dual-, and quad precision JFET amplifiers that feature low offset voltage, input bias current, input voltage noise, and input current noise. The combination of low offsets, low noise, and very low input bias currents makes these amplifiers especially suitable for high impedance sensor amplification and precise current measurements

using shunts.

The combination of dc precision, low noise, and fast settling time results in superior accuracy in medical instruments, electronic measurement, and automated test equipment. Unlike many competitive amplifiers, the AD8510/AD8512/AD8513 maintain their fast settling performance even with substantial capacitive loads. Unlike many older JFET amplifiers, the AD8510/AD8512/AD8513 do not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range.

FEATURES

Fast settling time: 500 ns to 0.1

Low offset voltage: 400 μV maximum

Low TCVOS: 1 μV/°C typical

Low input bias current: 25 pA typical at VS= ±15 V

Dual-supply operation: ±5 V to ±15 V

Low noise: 8 nV/√Hz typical at f = 1 kHz

Low distortion: 0.0005

No phase reversal

Unity gain stable

APPLICATIONS

Instrumentation

Multipole filters

Precision current measurement

Photodiode amplifiers

Sensors

Audio