GENERAL DESCRIPTION

The AD8065/AD80661 FastFET amplifiers are voltage feedback amplifiers with FET inputs offering high performance and ease of use. The AD8065 is a single amplifier, and the AD8066 is a dual amplifier. These amplifiers are developed in the Analog Devices, Inc. proprietary XFCB process and allow exceptionally low noise operation (7.0 nV/√Hz and 0.6 fA/√Hz) as well as very high input impedance.

FEATURES

FET input amplifier

1 pA input bias current

Low cost

High speed: 145 MHz, −3 dB bandwidth (G = +1)

180 V/µs slew rate (G = +2)

Low noise

7 nV/√Hz (f = 10 kHz)

0.6 fA/√Hz (f = 10 kHz)

Wide supply voltage range: 5 V to 24 V

Single-supply and rail-to-rail output

Low offset voltage 1.5 mV max

High common-mode rejection ratio: −100 dB

Excellent distortion specifications

SFDR −88 dB @ 1 MHz

Low power: 6.4 mA/amplifier typical supply current

No phase reversal

Small packaging: SOIC-8, SOT-23-5, and MSOP

APPLICATIONS

Instrumentation

Photodiode preamps

Filters

A/D drivers

Level shifting

Buffering