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
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
Available in space-saving, thermally enhanced packages
3 mm × 3 mm LFCSP
Low supply current: IS = 10 mA on ±12 V supplies
High voltage data acquisition systems
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.
With a wide supply voltage range (5 V to 26 V), high input
impedance, and fixed differential gain of 2, the ADA4922-1 is
designed to drive ADCs found to in a variety of applications,
including industrial instrumentation.
High Voltage, Differential
18-Bit ADC Driver
FUNCTIONAL BLOCK DIAGRAM
NC = NO CONNECT
–87 RL = 2kΩ
–96 VS = ±5V, VO, dm = 12V p-p
VS = ±12V, VO, dm = 40V p-p
Figure 2. Harmonic Distortion for Various Power Supplies
The ADA4922-1 is manufactured on ADI’s proprietary second-
generation XFCB process that enables the amplifier to achieve
excellent noise and distortion performance on high supply
The ADA4922-1 is available in an 8-lead 3 mm × 3 mm LFCSP
as well as an 8-lead SOIC package. Both packages are equipped
with an exposed paddle for more efficient heat transfer. The
ADA4922-1 is rated to work over the extended industrial
temperature range, −40°C to +85°C.
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
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