ADA4938-1ACPZ-RL

Overview

The ADA4938-1ACPZ-RL is a single-channel, ultralow distortion differential amplifier designed as an ADC driver. It features a 1000 MHz small-signal bandwidth and a 4700 V/μs slew rate. The device operates on supply voltages ranging from 4.5 V to 11 V with a quiescent current of 37 mA per amplifier. Key electrical parameters include a typical input offset voltage of 1 mV, an input voltage noise of 2.6 nV/√Hz, and a power supply rejection ratio of -80 dB. It is housed in a 16-lead LFCSP package.

Feature Summary

• Ultra-low harmonic distortion performance for high-fidelity signal processing
• Internal common-mode feedback loop ensures exceptional output balance
• Adjustable output common-mode voltage range for direct ADC interface matching
• External four-resistor feedback network enables flexible gain configuration

Applications

• Driving high-performance analog-to-digital converters
• Single-ended-to-differential signal conversion
• Intermediate frequency and baseband gain modules
• Differential buffering applications
• Line drivers in data acquisition systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm reel quantity and packaging specifications. Ensure the component matches the required industrial temperature range and lead-free status. Cross-reference the part number with the latest datasheet revision to validate pinout configurations and absolute maximum ratings before finalizing procurement orders.

Selection Notes

Select this component when driving high-resolution ADCs requiring low noise and minimal distortion. The adjustable output common-mode voltage allows compatibility with various ADC input ranges. Consider the wide supply voltage flexibility and high slew rate for applications demanding fast transient response and broad dynamic range operation within industrial temperature constraints.

Part Context

This part belongs to the ADA4938 family of differential amplifiers manufactured by Analog Devices Inc. utilizing proprietary third-generation high-voltage XFCB process technology. The single-channel variant (ADA4938-1) is distinct from the dual-channel version (ADA4938-2), which shares similar electrical characteristics but differs in package count and pin configuration.

Replacement Considerations

Public confirmed substitute part numbers: None identified.