ADA4922-1ARDZ

Overview

The ADA4922-1ARDZ is a high-voltage differential driver designed for 16-bit to 18-bit ADCs with input ranges up to ±20 V. It converts single-ended signals to differential outputs with a fixed gain of +2, requiring no external components. Operating on a wide supply range of 5 V to 26 V, it delivers a −3 dB bandwidth of 38 MHz at G=+2 and settles to 0.01% in 200 ns for a 12 V step. The device features low output noise (12 nV/√Hz), minimal offset voltage (1.1 mV max), and an integrated disable function.

Feature Summary

• Converts single-ended inputs to differential outputs without external gain components
• Operates on wide supply voltages from 5 V to 26 V to drive high-resolution ADCs
• Includes a dedicated disable pin to minimize power consumption when inactive

Applications

• High voltage data acquisition systems
• Industrial instrumentation
• Spectrum analysis
• Automated test equipment (ATE)
• Medical instruments

Procurement Notes

Verify the specific package variant required for the design, as the ADA4922-1ARDZ denotes the 8-lead SOIC_EP option. Confirm RoHS compliance status indicated by the Z suffix. Ensure the ordering suffix matches the reel or tube configuration needed for assembly processes. Cross-reference the manufacturer's current datasheet revision to validate all electrical parameters against the latest specifications before finalizing procurement.

Selection Notes

Select this component when driving ADCs requiring differential inputs with high common-mode voltages. The fixed gain of +2 simplifies circuit design by eliminating external feedback resistors. Verify that the application requires the specified 38 MHz bandwidth and fast settling times. Consider the thermal performance of the exposed pad packages if operating near maximum power dissipation limits within the industrial temperature range.

Part Context

Manufactured using Analog Devices' second-generation XFCB process, the ADA4922-1 achieves excellent noise and distortion performance under high supply voltages. It is part of a family of differential drivers optimized for precision data conversion applications. The device integrates internal 600 Ω feedback resistors to maintain optimal trade-offs between output noise, power dissipation, and linearity.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.