LT6402CUD-12#PBF

Overview

The LT6402CUD-12#PBF is a low distortion, low noise differential amplifier and ADC driver designed for applications from DC to 300MHz. It features a fixed gain of 12dB (4V/V) and operates on a single 5V supply with a typical current consumption of 30mA. The device includes both unfiltered outputs (+OUT, –OUT) and an integrated 75MHz differential low-pass filter with additional filtered outputs (+OUTFILTERED, –OUTFILTERED). It utilizes a compact 16-lead 3mm × 3mm QFN package and supports adjustable output common mode voltage via the VOCM pin.

Feature Summary

• Integrated 75MHz differential low-pass filter providing additional filtered outputs to reduce external filtering components.
• Adjustable output common mode voltage via the VOCM pin, eliminating the need for output transformers or AC-coupling capacitors in many applications.
• Low input-referred noise and low distortion performance suitable for driving high-speed 12-bit and 14-bit ADCs.
• Supports both single-ended and differential inputs with minimal support circuitry requirements.

Applications

• Differential ADC Driver for imaging and communications systems
• IF Sampling Receivers
• SAW Filter Interfacing and Buffering
• Single-Ended to Differential Conversion
• Level Shifting

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free finish and tube packaging when ordering. Confirm that the 'C' grade designation meets the required operating temperature range for your application, as it is specified over a commercial range but designed for extended ranges. Ensure the 16-lead QFN footprint matches your PCB layout constraints.

Selection Notes

Select this component when a fixed 12dB gain and integrated filtering are required for high-speed signal chains. Consider the LT6402IUD-12#PBF if guaranteed performance across the full industrial temperature range (-40°C to 85°C) is necessary, as the 'C' grade is optimized for commercial temperatures. Evaluate the trade-off between the unfiltered bandwidth and the built-in 75MHz filter based on your anti-aliasing needs.

Part Context

This part belongs to the LT6402-12 series of differential amplifiers. It is functionally similar to other members like the LT6402CUD-12#TRPBF, which differs primarily in tape-and-reel packaging. It serves as a specialized driver within Analog Devices' portfolio for interfacing analog signals to digital converters in communication infrastructure.

Replacement Considerations

LT6402IUD-12#PBF offers the same electrical characteristics but with guaranteed performance over the full -40°C to 85°C temperature range. LT6402CUD-12#TRPBF provides identical functionality in a tape-and-reel format for automated assembly.