LT6402CUD-6#TRPBF

Overview

The LT6402CUD-6#TRPBF is a low distortion, low noise differential amplifier and ADC driver designed for applications from DC to 300MHz. It features a fixed gain of 6dB (2V/V) and operates on a single 5V supply with a typical current consumption of 30mA. The device includes unfiltered outputs (+OUT, –OUT) and an integrated 75MHz differential low-pass filter providing filtered outputs (+OUTFILTERED, –OUTFILTERED). It utilizes a 16-lead 3mm × 3mm QFN package and supports an operating temperature range of –40°C to 85°C.

Feature Summary

• Integrated 75MHz differential low-pass filter at the +OUTFILTERED and –OUTFILTERED pins 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.
• Capable of converting single-ended signals to differential signals and vice versa with minimal support circuitry.
• Designed for driving high-speed 12-bit and 14-bit ADCs with exceptionally low input-referred noise and distortion.

Applications

• Differential ADC driver for imaging and communications systems
• IF sampling receivers and SAW filter interfacing/buffering
• Single-ended to differential conversion
• Differential to single-ended conversion
• Level shifting

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the C grade designation corresponds to the specified commercial temperature range of –40°C to 85°C. Ensure compatibility with the required 16-lead QFN footprint during PCB layout. Cross-reference the manufacturer part number directly with official Analog Devices documentation to validate authenticity and revision status.

Selection Notes

Select this component when a fixed 6dB gain is required for direct ADC interfacing without external feedback resistors. Choose the filtered outputs if anti-aliasing or noise reduction near 75MHz is necessary. Consider the unfiltered outputs for wideband applications up to 300MHz where internal filtering is not desired. Verify that the single 5V supply constraint aligns with the system power architecture.

Part Context

This device belongs to the LT6402 family of low distortion, low noise differential amplifiers. The LT6402-6 variant specifically provides a fixed gain of 6dB, distinguishing it from other versions like the -1, -2, or -4 which offer different gain settings or stability characteristics. It is manufactured by Analog Devices Inc. using advanced silicon-germanium processes for high-speed performance.

Replacement Considerations

LT6402IUD-6#TRPBF: Industrial temperature grade version (-40°C to 85°C guaranteed performance).