LTC6400CUD-14#TRPBF

Overview

The LTC6400CUD-14#TRPBF is a high-speed differential amplifier designed for processing signals from DC to 300MHz. It features a fixed gain of 5V/V (14dB) and a 2.4GHz –3dB bandwidth. The device operates on a supply voltage between 2.85V and 3.5V with an 85mA supply current. Key electrical characteristics include a 200Ω differential input impedance, 25Ω differential output impedance, and a maximum differential output swing of 4.8V P-P. It provides adjustable output common mode voltage control from 1V to 1.6V via the VOCM pin.

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 an internally fixed gain of 14dB.
• Includes an onboard 590MHz low-pass filter at the filtered output pins.
• Allows direct connection to ADCs without external transformers or AC-coupling capacitors.

Applications

• Differential ADC Driver
• Single-ended to Differential Conversion
• IF Sampling Receivers

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 temperature range specification aligns with the operational environment requirements, as it differs from the I grade variant. Ensure the component matches the exact Analog Devices part number to guarantee correct lead finish and marking specifications.

Selection Notes

Select this component when a fixed 14dB gain is required for signal chain applications up to 300MHz. Consider the 200Ω input impedance for source matching requirements. Evaluate the power consumption against system constraints, noting the 85mA supply current. Compare performance metrics such as noise figure and linearity against alternative drivers if lower power or different gain values are necessary.

Part Context

This part belongs to the LTC6400 family of high-speed differential amplifiers manufactured by Analog Devices Inc. It is functionally similar to the LTC6401 series but offers higher output drive capability at the cost of increased power consumption. The device is housed in a compact 16-lead 3mm x 3mm QFN package suitable for space-constrained designs.

Replacement Considerations

The LTC6400IUD-14#TRPBF serves as a functional replacement with an extended industrial temperature range. The LTC6401-14 series is pin-compatible but consumes less power while exhibiting slightly higher non-linearity at frequencies above 140MHz.