ADA4932-2YCPZ-RL

Overview

The ADA4932-2YCPZ-RL is a dual-channel, low-power differential ADC driver manufactured by Analog Devices Inc. It operates within a supply range of +3 V to ±5 V and features a −3 dB small-signal bandwidth of 560 MHz at unity gain. The device provides a slew rate of 2800 V/µs and a fast settling time of 9 ns to 0.1%. It delivers high linearity with an SFDR of 100 dB at 10 MHz and 90 dB at 20 MHz. Input voltage noise is specified at 3.6 nV/√Hz, with a typical input offset voltage of ±0.5 mV. Each amplifier channel consumes approximately 9.6 mA of quiescent current.

Feature Summary

• Dual-channel architecture fabricated using proprietary silicon-germanium complementary bipolar process for low distortion and noise.
• Internal common-mode feedback loop ensures exceptional output balance and suppresses even-order harmonic distortion without requiring tightly matched external components.
• User-adjustable output common-mode voltage via the VOCM pin allows precise matching to ADC input requirements.
• Flexible configuration supports single-ended-to-differential or differential-to-differential conversion using a simple external four-resistor feedback network.

Applications

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

Procurement Notes

Verify that the ordering suffix matches the required reel quantity and tape-and-reel specifications. Confirm the package type corresponds to the 24-lead LFCSP-WQ variant. Ensure the temperature grade aligns with the industrial operating range of −40°C to +105°C. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and revision status before procurement.

Selection Notes

Select this component when driving high-performance ADCs requiring differential inputs from single-ended sources. The dual-channel design is suitable for applications needing two independent signal paths in a compact footprint. Consider the adjustable output common-mode voltage feature for interfacing with various ADC input ranges. Evaluate power consumption constraints, as the device offers low quiescent current relative to its high-speed performance capabilities.

Part Context

The ADA4932-2 serves as the dual-channel counterpart to the ADA4932-1, succeeding the AD8132 family. It integrates two identical differential amplifier channels within a single 24-lead LFCSP-WQ package. This integration facilitates balanced PCB layout and minimizes board space compared to discrete solutions. The device maintains compatibility with standard feedback networks while offering improved dynamic performance and lower power consumption than previous generations.

Replacement Considerations

The ADA4932-1 is the single-channel equivalent within the same series. Designers replacing older AD8132 units should verify pinout compatibility and thermal characteristics. Ensure that the replacement part meets the specific bandwidth and noise requirements of the original application circuit.

FAQ

How does the internal common-mode feedback loop affect output balance?

The internal common-mode feedback loop forces the outputs to remain highly balanced over a wide frequency range, ensuring signals are equal in amplitude and exactly 180° out of phase without relying on tightly matched external resistors.

What is the function of the VOCM pin?

The VOCM pin allows the user to adjust the output common-mode voltage. The internal feedback loop forces the output common-mode level to match the voltage applied to this pin, enabling alignment with specific ADC input requirements.

Can the ADA4932-2 operate with gains less than one?

Yes, the device can be configured for gains less than one using the external four-resistor feedback network, providing flexibility for attenuation applications.