LTC6401CUD-14#TRPBF

Overview

The LTC6401CUD-14#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 140MHz. It features a fixed gain of 5V/V (14dB) and a 2GHz -3dB bandwidth. The device operates on a supply voltage between 2.85V and 3.5V with a typical current draw of 45mA. Key electrical specifications include an input impedance of 200Ω, an output common mode range of 1V to 1.6V, and a noise figure of 7.3dB. It provides a maximum differential output swing of 4.6V P-P.

Feature Summary

• Fixed internal gain of 14dB with low noise and distortion characteristics optimized for driving ADCs.
• Adjustable output common mode voltage via external pin, eliminating the need for transformers or AC-coupling capacitors in many applications.
• Integrated filtered outputs providing additional low-pass filtering capability without external components.
• Differential inputs and outputs with single-ended to differential conversion capability.

Applications

• Differential ADC Driver
• IF Sampling Receivers
• SAW Filter Interfacing

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'C' grade designation aligns with the required commercial temperature range of 0°C to 70°C rather than the industrial range. Ensure the component matches the exact Analog Devices part number to guarantee specified performance parameters.

Selection Notes

Select this model for applications requiring a fixed 14dB gain within the DC to 140MHz signal band. Consider the 200Ω input impedance for source matching requirements. Evaluate the 45mA supply current against power constraints. Verify that the 0°C to 70°C operating range meets environmental conditions.

Part Context

This component belongs to the LTC6401 family of high-speed differential amplifiers. It shares the same QFN-16 package and basic architecture as other variants like the LTC6401-8 and LTC6401-26, differing primarily in fixed gain settings. It serves as a general-purpose broadband gain block and specialized driver for high-resolution data converters.

Replacement Considerations

LTC6401IUD-14#TRPBF offers identical electrical performance but supports the wider –40°C to 85°C temperature range. The LTC6400-14 provides lower distortion at higher frequencies but requires increased supply current.