GENERAL DESCRIPTION

The ADA4922-1 is a differential driver for 16-bit to 18-bit ADCs that have differential input ranges up to ±20 V. Configured as an easy-to-use, single-ended-to-differential amplifier, the ADA4922-1 requires no external components to drive ADCs. The ADA4922-1 provides essential benefits such as low distortion and high SNR that are required for driving ADCs with resolutions up to 18 bits.

FEATURES

Single-ended-to-differential conversion

Low distortion (VO, dm = 40 V p-p)

−99 dBc HD at 100 kHz

Low differential output referred noise: 12 nV/√Hz

High input impedance: 11 MΩ

Fixed gain of 2

No external gain components required

Low output-referred offset voltage: 1.1 mV max

Low input bias current: 3.5 μA max

Wide supply range

5 V to 26 V

Can produce differential output signals in excess of 40 V p-p

High speed

38 MHz, −3 dB bandwidth @ 0.2 V p-p differential output

Fast settling time

200 ns to 0.01 for 12 V step on ±5 V supplies

Disable feature

Available in space-saving, thermally enhanced packages

3 mm × 3 mm LFCSP

8-lead SOIC_EP

Low supply current: IS = 10 mA on ±12 V supplies

APPLICATIONS

High voltage data acquisition systems

Industrial instrumentation

Spectrum analysis

ATE

Medical instruments