LTC6400CUD-26#TRPBF

Overview

The LTC6400CUD-26#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 300MHz. It features a fixed gain of 26dB (20V/V) and a 1.9GHz -3dB bandwidth. The device operates on a single supply voltage ranging from 2.85V to 3.5V, drawing 85mA of supply current. It provides differential inputs with 50Ω impedance and adjustable output common mode voltage between 1V and 1.6V via the VOCM pin. Packaged in a compact 16-lead 3mm × 3mm QFN, it targets driving 12-, 14-, and 16-bit ADCs with low noise and distortion.

Feature Summary

• Provides low noise and low distortion performance specifically optimized for driving high-resolution analog-to-digital converters.
• Features an internally fixed gain of 26dB (20V/V) with a wide 1.9GHz bandwidth for broadband signal processing.
• Includes an external VOCM pin for independent adjustment of the output common mode voltage, eliminating the need for AC coupling capacitors or transformers in many configurations.

Applications

• Differential ADC Driver
• IF Sampling Receivers
• Single Ended to Differential Conversion

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the 'C' grade designation aligns with the intended operational temperature range of 0°C to 70°C rather than the industrial -40°C to 85°C range. Ensure compatibility with the 16-lead QFN footprint during PCB layout verification.

Selection Notes

Select this component when a fixed 26dB gain is required for driving ADCs within the DC to 300MHz frequency range. Consider the 50Ω input impedance for direct interfacing with standard RF sources. Evaluate the power consumption of 255mW against system thermal constraints. Verify that the commercial temperature range meets environmental requirements before choosing over the industrial variant.

Part Context

This part belongs to the LTC6400 family of high-speed differential amplifiers. It shares pinout compatibility with other gain variants like the LTC6400-20 and the lower-power LTC6401 series. The device serves as a specialized solution for replacing traditional IF gain blocks and transformer-based interfaces, offering a more compact and power-efficient alternative for modern receiver architectures.

Replacement Considerations

LTC6400IUD-26#TRPBF offers the same electrical specifications but supports an extended operating temperature range of –40°C to 85°C.