LTC6400IUD-20#TRPBF

Overview

The LTC6400IUD-20#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 300MHz. It features a fixed gain of 10V/V (20dB) and a 1.8GHz –3dB bandwidth. The device operates on a supply voltage between 2.85V and 3.5V with a typical current draw of 90mA. Key electrical parameters include a 200Ω differential input impedance, 2.1nV/√Hz total input noise, and an adjustable output common mode voltage range of 1V to 1.6V. It 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 an externally adjustable output common mode voltage pin that eliminates the need for transformers or AC-coupling capacitors in many applications.
• Integrates internal feedback networks and output filtering capabilities to simplify circuit design and reduce support component count.

Applications

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

Procurement Notes

Verify the specific suffix 'IUD-20#TRPBF' against official Analog Devices documentation to confirm industrial temperature range (-40°C to 85°C), tape and reel packaging format, and lead-free finish status. Ensure compatibility with the required operating voltage and signal frequency specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 20dB gain and high linearity are required for intermediate frequency signals up to 300MHz. Consider the LTC6401 family if lower power consumption is prioritized over maximum linearity at higher frequencies. Verify that the 200Ω input impedance matches the source requirements or can be properly terminated.

Part Context

This part belongs to the LTC6400 series of fully differential amplifiers manufactured by Analog Devices. It is distinct from the LTC6401 series, which offers lower power consumption but slightly higher non-linearity above 140MHz. The IUD-20 variant specifies the industrial temperature grade and fixed 20dB gain configuration within the broader product family.

Replacement Considerations

LTC6401IUD-20#TRPBF is a pin-compatible alternative offering lower power consumption, though with increased non-linearity at frequencies exceeding 140MHz. Other gain variants within the LTC6400 family may require schematic adjustments due to differing feedback resistor values.