ADA4922-1ACPZ-RL7

Overview

The ADA4922-1ACPZ-RL7 is a high-voltage differential driver designed for 16-bit to 18-bit ADCs. It converts single-ended inputs to differential outputs with a fixed gain of +2, requiring no external components. Operating on a 5 V to 26 V supply range, it delivers a −3 dB bandwidth of 38 MHz at G=+2 and a slew rate of 730 V/µs. The device features low output noise (12 nV/√Hz), minimal offset voltage (1.1 mV max), and an integrated disable function. Packaged in an 8-lead 3 mm × 3 mm LFCSP, it supports operation from −40°C to +85°C.

Feature Summary

• Single-ended-to-differential conversion without external gain components
• High input impedance of 11 MΩ for minimal signal loading
• Integrated disable feature for power management
• Rail-to-rail output capability within specified supply limits

Applications

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

Procurement Notes

Verify the specific package option CP-8-13 (LFCSP) matches the design footprint. Confirm RoHS compliance status indicated by the Z suffix. Ensure the operating temperature range aligns with system requirements. Validate that the fixed gain of +2 meets the application's signal conditioning needs. Check for any recent manufacturing changes or obsolescence notices.

Selection Notes

Select this component when driving high-resolution ADCs requiring differential inputs from single-ended sources. The fixed gain of +2 simplifies circuit design by eliminating external resistors. Consider the wide supply range for flexibility in power architecture. Evaluate thermal performance using the provided junction-to-ambient resistance values for the LFCSP package under expected load conditions.

Part Context

This part belongs to Analog Devices' family of precision differential drivers optimized for high-speed, high-resolution data conversion applications. It utilizes the proprietary second-generation XFCB process to achieve superior noise and distortion performance at elevated supply voltages. The device integrates internal feedback networks to ensure consistent gain and linearity across the operating temperature range.

Replacement Considerations

The ADA4922-1ARDZ serves as a pin-compatible alternative in the 8-lead SOIC_EP package. Verify thermal characteristics and board layout compatibility when substituting between LFCSP and SOIC packages. Both variants share identical electrical specifications and functionality.