ADA4940-1ARZ-RL

Overview

The ADA4940-1ARZ-RL is a fully differential amplifier manufactured by Analog Devices Inc., designed as an ultralow power, low distortion ADC driver. It features a small signal bandwidth of 260 MHz and a slew rate of 95 V/µs. The device operates with a quiescent current of 1.25 mA and supports flexible power supplies ranging from 3 V to 7 V. It provides rail-to-rail output swing and adjustable output common-mode voltage. The component is available in an 8-lead SOIC package.

Feature Summary

• Ultralow power consumption suitable for battery-operated applications
• Extremely low harmonic distortion performance
• Low input voltage noise characteristics
• Adjustable output common-mode voltage

Applications

• Low power PulSAR/SAR ADC drivers
• Single-ended-to-differential conversion
• Differential buffers
• Line drivers
• Medical imaging systems

Procurement Notes

Verify the specific ordering suffix ARZ-RL against the manufacturer's official documentation to confirm package type and reel specifications. Ensure compatibility with the target PCB footprint for the 8-lead SOIC configuration. Confirm that the supply voltage range aligns with system requirements before integration.

Selection Notes

Select this component when driving high-resolution SAR or Sigma-Delta ADCs requiring low noise and minimal power usage. The adjustable VOCM pin allows matching various ADC input common-mode voltages. Consider the 260 MHz bandwidth for high-speed signal processing needs within the specified temperature range.

Part Context

The ADA4940-1 is part of the ADA4940 family of fully differential amplifiers. It utilizes a complementary bipolar process to achieve low distortion and noise. The device includes a disable pin to reduce power consumption further when not in active use, making it versatile for portable electronics and industrial control applications.

Replacement Considerations

Refer to Table 1 in the datasheet for similar products such as AD8137, ADA4932-1, and ADA4941-1. Verify bandwidth, noise, and power specifications against these alternatives to ensure functional equivalence in the specific application circuit.