ADA4939-1YCPZ-RL

Overview

The ADA4939-1YCPZ-RL is a single-channel, ultralow distortion differential amplifier designed for driving high-performance ADCs. It operates on a single supply between 3.0 V and 5.25 V with a quiescent current of approximately 36.5 mA per amplifier. The device features a small-signal bandwidth of 1.4 GHz and a slew rate of 6800 V/µs at 5 V operation. It provides an input voltage noise density of 2.3 nV/√Hz and maintains harmonic distortion below -77 dBc up to 100 MHz. The component is housed in a 16-lead LFCSP package and supports gains stable for values greater than or equal to 2.

Feature Summary

• Ultralow harmonic distortion performance suitable for high-resolution data acquisition systems
• Internal common-mode feedback loop ensures exceptional output balance without requiring tightly matched external components
• User-adjustable output common-mode voltage via the VOCM pin allows precise matching to ADC input requirements
• Fast overdrive recovery time enables rapid signal restoration following large input transients

Applications

• ADC drivers for resolutions up to 16 bits
• Single-ended-to-differential converters
• IF and baseband gain blocks
• Differential buffers and line drivers

Procurement Notes

Verify that the ordering suffix RL corresponds to the reel packaging configuration required for automated assembly processes. Confirm that the specific part number matches the single-channel variant rather than the dual-channel version. Ensure compatibility with the 16-lead LFCSP footprint during PCB layout verification. Check for any specific handling requirements related to moisture sensitivity levels before soldering.

Selection Notes

Select this component when driving high-speed ADCs requires minimal signal degradation and low noise injection. The internal common-mode control simplifies biasing compared to discrete solutions. Verify that the application gain remains at or above 2 to maintain stability. Consider the thermal resistance characteristics if operating near the upper temperature limits or under heavy load conditions.

Part Context

This device belongs to the ADA4939 family of silicon-germanium complementary bipolar differential amplifiers. It is specifically engineered for applications demanding high dynamic range and wide bandwidth. The single-channel architecture distinguishes it from the dual-channel ADA4939-2, offering a compact solution for space-constrained designs requiring differential signaling capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.