ADA4927-2YCPZ-RL

Overview

The ADA4927-2YCPZ-RL is a dual-channel, ultralow distortion, current feedback differential amplifier designed for driving high-performance ADCs up to 16 bits. It operates from DC to 100 MHz with a small-signal bandwidth of 2300 MHz and a slew rate of 5000 V/µs. Input voltage noise is typically 1.4 nV/√Hz. The device supports supply voltages from 4.5 V to 11 V and features an adjustable output common-mode voltage via the VOCM pin. It is housed in a 4 mm × 4 mm 24-lead LFCSP package.

Feature Summary

• Current feedback architecture provides wide bandwidth and low distortion at higher gains compared to voltage feedback amplifiers.
• Internal common-mode feedback loop ensures exceptional output balance and suppression of even-order distortion products.
• Adjustable output common-mode voltage allows easy matching to required ADC input levels.
• Fabricated using silicon-germanium complementary bipolar process for very low distortion and noise.

Applications

• ADC drivers
• Single-ended-to-differential converters
• IF and baseband gain blocks
• Differential buffers
• Differential line drivers

Procurement Notes

Verify the specific ordering suffix YCPZ-RL corresponds to the 24-lead LFCSP package and reel packaging configuration. Confirm that the component meets RoHS compliance standards as indicated in manufacturer documentation. Ensure the operating temperature range of -40°C to +105°C aligns with system requirements. Cross-reference the datasheet revision B specifications for accurate electrical parameters during integration.

Selection Notes

Select this component when driving 14-bit or 16-bit ADCs requiring high dynamic range and low noise. The dual-channel configuration is suitable for I/Q demodulation applications. Consider the 24-lead LFCSP package for space-constrained designs. Verify power supply requirements fall within the 4.5 V to 11 V range. Evaluate thermal dissipation capabilities based on ambient temperature and PCB layout.

Part Context

The ADA4927 series includes the single-channel ADA4927-1 and dual-channel ADA4927-2 variants. Both share similar electrical characteristics but differ in channel count and package type. The ADA4927-2 offers two independent channels in a 24-lead LFCSP, while the ADA4927-1 uses a 16-lead LFCSP. This family is optimized for data acquisition and signal processing applications requiring high accuracy.

Replacement Considerations

Direct substitutes include the ADA4927-1 for single-channel applications. Other Analog Devices differential amplifiers may serve as alternatives if pin compatibility and electrical specifications match. Verify functional equivalence regarding bandwidth, noise, and distortion before replacement.

FAQ

How does the current feedback architecture benefit the ADA4927?

It provides loop gain nearly independent of closed-loop gain, achieving wide bandwidth, low distortion, and low noise at higher gains and lower power consumption than comparable voltage feedback amplifiers.

What is the purpose of the VOCM pin?

The VOCM pin allows users to independently adjust the output common-mode voltage level to match the required ADC input common-mode voltage, ensuring optimal performance and balance.

What is the typical input voltage noise of the ADA4927-2?

The typical input voltage noise is 1.4 nV/√Hz, contributing to its suitability for high-resolution data acquisition systems.