ADA4941-1YCPZ-R7

Overview

The ADA4941-1YCPZ-R7 is a single-supply, differential ADC driver designed for power-sensitive systems driving up to 18-bit analog-to-digital converters. It converts single-ended inputs to differential outputs with a gain of 2 without external components. Key electrical parameters include a 31 MHz bandwidth at G=+2, 10.2 nV/√Hz output-referred noise, and 2.2 mA quiescent current at 3 V supply. The device operates on a 2.7 V to 12 V range, features rail-to-rail outputs, and includes a disable function.

Feature Summary

• Converts single-ended signals to differential outputs optimized for high-resolution ADCs
• Provides low distortion and high signal-to-noise ratio performance
• Features user-adjustable gain via external feedback networks
• Includes a hardware disable feature for power management

Applications

• Single-supply data acquisition systems
• Battery-powered instrumentation
• Medical instrumentation
• Process control applications

Procurement Notes

Verify the specific suffix YCPZ-R7 corresponds to the 8-lead LFCSP package and reel packaging configuration. Confirm the operating temperature range matches the extended industrial specification of -40°C to +125°C. Ensure the component source is an authorized distributor to guarantee authenticity and traceability.

Selection Notes

Select this component when driving 16-bit or 18-bit PulSAR ADCs requiring low power consumption. It is suitable for designs needing a single-ended to differential conversion without external gain-setting resistors for a gain of 2. Consider the 3 mm x 3 mm LFCSP package for space-constrained PCB layouts.

Part Context

Manufactured using Analog Devices' second-generation XFCB process, the ADA4941-1 achieves 18-bit performance at low supply currents. It is part of the ADA4941 family, which also includes standard SOIC packages. The device is specifically engineered to drive high-resolution ADCs in battery-operated devices.

Replacement Considerations

ADA4941-1YRZ-R7 (SOIC-8 package variant)

FAQ

How is the gain set for the ADA4941-1?

A gain of 2 requires no external components. Higher gains are achieved by adding a resistive feedback network between the FB pin and the outputs.

What is the purpose of the REF pin?

The REF pin sets the output common-mode voltage. The voltage applied here appears directly at the output common-mode level without affecting the differential signal.