LTC6401CUD-8#TRPBF

Overview

The LTC6401CUD-8#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 140MHz. It features a fixed gain of 2.5V/V (8dB) and a 2.2GHz –3dB bandwidth. The device operates on a single supply voltage ranging from 2.85V to 3.5V, drawing a typical supply current of 45mA. It includes an adjustable output common mode voltage control pin allowing operation between 1V and 1.6V. The component is housed in 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 fully differential inputs and outputs with a fixed internal gain of 8dB.
• Includes an external pin for setting the output common mode voltage, eliminating the need for transformers or AC-coupling capacitors in many applications.
• Offers flexible input and output coupling options supporting both DC and AC signal paths.

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 as indicated by the manufacturer's ordering information. Confirm that the 'C' grade designation meets the required operational temperature range of 0°C to 70°C for your specific application environment. Ensure compatibility with the 16-lead QFN footprint during PCB layout.

Selection Notes

Select this part when a fixed 8dB gain is sufficient for the system requirements. Consider the LTC6401I variant if the application requires guaranteed specified performance over the full industrial temperature range of –40°C to 85°C. Evaluate the LTC6400 family if lower distortion is prioritized over power consumption at frequencies above 140MHz.

Part Context

This component belongs to the LTC6401 series of high-speed differential amplifiers manufactured by Analog Devices Inc. The series offers various gain configurations, including 8dB, 14dB, 20dB, and 26dB versions. These devices are engineered to provide low noise and low distortion characteristics suitable for broadband signal processing and direct interfacing with high-speed data converters.

Replacement Considerations

The LTC6401IUD-8#TRPBF serves as a functional replacement with an extended industrial temperature range. The LTC6400-8 is not available; however, the LTC6400-20 and LTC6400-26 offer lower distortion profiles with higher gain and current consumption.