LTC6400CUD-8#TRPBF

Overview

The LTC6400CUD-8#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 300MHz. It features a fixed gain of 2.5V/V (8dB) and a –3dB bandwidth of 2.2GHz. The device operates on a supply voltage ranging from 2.85V to 3.5V with a typical supply current of 85mA. It provides a maximum differential output swing of 4.8V P-P and includes an adjustable output common mode voltage control range of 1V to 1.6V. The component utilizes a compact 16-lead 3mm × 3mm QFN package.

Feature Summary

• Provides low noise and low distortion performance specifically optimized for driving 12-, 14-, and 16-bit ADCs.
• Features internally fixed gain of 8dB, eliminating the need for external feedback resistors.
• Includes independent output common mode voltage control via an external pin, removing the requirement for transformers or AC-coupling capacitors in many applications.
• Offers flexible input and output coupling options, supporting both DC and AC coupling configurations.

Applications

• Differential ADC Driver
• Single Ended to Differential Conversion
• IF Sampling Receivers
• SAW Filter Interfacing

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the C grade temperature rating meets the operational requirements of the target environment, as this variant is specified for commercial temperature ranges rather than the extended industrial range found in other part numbers within the same family.

Selection Notes

Select this component when a fixed 8dB gain is required for broadband signal conditioning up to 300MHz. Consider the internal op amp noise density and equivalent output IP3 specifications relative to the dynamic range requirements of the downstream analog-to-digital converter. Ensure the source impedance matches the 400Ω differential input impedance to maintain optimal noise figure and linearity performance.

Part Context

This device belongs to the LTC6400 family of fully differential amplifiers. It shares pin compatibility with the lower power LTC6401 series but offers higher output drive capability at the cost of increased supply current. The family is engineered to simplify signal chain design by integrating filtering and common mode control directly into the amplifier structure.

Replacement Considerations

LTC6400IUD-8#TRPBF