ADA4930-1YCPZ-RL

Overview

The ADA4930-1YCPZ-RL is a single-channel, ultralow noise differential amplifier designed for driving high-performance analog-to-digital converters (ADCs) with resolutions up to 14 bits. It operates on a single 3.3 V or 5 V supply and features a 16-lead LFCSP package. Key electrical parameters include a small-signal bandwidth of 1350 MHz at G=1, a slew rate of 3400 V/μs, and an input voltage noise of 1.2 nV/√Hz. The device offers extremely low harmonic distortion, with HD2 reaching -104 dBc at 10 MHz under 5 V operation.

Feature Summary

• Internal common-mode feedback loop ensures exceptional output balance and suppresses even-order harmonic distortion products without requiring tightly matched external components.
• Adjustable output common-mode voltage allows precise matching to ADC input requirements, facilitating DC level translation and flexible interface configurations.
• Proprietary silicon-germanium (SiGe) complementary bipolar process enables very low distortion levels and minimal input voltage noise for high-fidelity signal processing.

Applications

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

Procurement Notes

Verify the specific ordering suffix YCPZ-RL against the manufacturer's current datasheet revision to confirm package type, temperature range, and reel specifications. Ensure compatibility with the target PCB footprint for the 16-lead LFCSP package. Confirm that the power-down pin configuration aligns with system standby requirements before finalizing procurement.

Selection Notes

Select this component when driving 1.8 V high-performance ADCs requiring ultralow noise and high speed. The adjustable VOCM pin simplifies interface design by eliminating the need for external bias networks. Consider the 16-lead LFCSP package for compact layouts where thermal dissipation can be managed via the exposed paddle on a standard four-layer board.

Part Context

This part belongs to the ADA4930 family of ultralow noise differential amplifiers manufactured by Analog Devices. The ADA4930-1 variant provides a single channel in a 3 mm × 3 mm package, while the ADA4930-2 offers dual channels in a 4 mm × 4 mm package. Both utilize SiGe technology for superior dynamic performance in data acquisition systems.

Replacement Considerations

Public confirmed substitute part numbers: ADA4930-2YCPZ-R7, ADA4937-1YCPZ-R7, ADA4938-1ACPZ-R7.

FAQ

How is the closed-loop gain configured?

The differential gain is determined by an external feedback network of four resistors (RG and RF). The gain formula is G = RF/RG, allowing for easy configuration of differential-to-differential or single-ended-to-differential operation.

What is the function of the PD pin?

The Power-Down (PD) pin controls the operational state of the amplifier. Driving this pin low disables the device, reducing quiescent current significantly, while driving it high enables normal operation.