GENERAL DESCRIPTION

The AD8476 is a very low power, fully differential precision amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, common-mode level shifting, low temperature drift, and rail-to-rail outputs for maximum dynamic range.

FEATURES

Very low power

330 μA supply current

Extremely low harmonic distortion

?126 HD2 at 10 kHz

?128 HD3 at 10 kHz

Fully differential or single-ended inputs/outputs

Differential output designed to drive precision ADCs

Drives switched capacitor and Σ-Δ ADCs

Rail-to-rail outputs

VOCM pin adjusts output common mode

Robust overvoltage up to 18 V beyond supplies

High performance

Suitable for driving 16-bit converter up to 250 kSPS

39 nV/√Hz output noise

1 ppm/°C gain drift maximum

200 μV maximum output offset

10 V/μs slew rate

6 MHz bandwidth

Single supply: 3 V to 18 V

Dual supplies: ±1.5 V to ±9 V

APPLICATIONS

ADC driver

Differential instrumentation amplifier building block

Single-ended-to-differential converter

Battery-powered instruments