LTC6432BIUF-15#TRPBF

Overview

The LTC6432BIUF-15#TRPBF is a Grade B differential gain block amplifier designed to drive high-resolution, high-speed ADCs. It operates from 100kHz to 1.4GHz with a fixed power gain of approximately 15.2dB. The device utilizes SiGe technology to achieve low 1/f noise and flat gain over the specified band. It features internally matched 100Ω differential inputs and outputs, requiring minimal external support components for biasing and impedance matching.

Feature Summary

• Ultra-high dynamic range differential architecture optimized for driving high-resolution, high-speed analog-to-digital converters
• SiGe-based design providing low 1/f noise corner and operation down to 100kHz
• Internally matched 100Ω differential input and output impedances for simplified circuit integration
• Single 5V supply operation with internal bias control and temperature compensation

Applications

• Differential 1GHz bandwidth ADC driver
• Wideband test instrument amplifier
• Differential IF amplifier
• 50Ω/75Ω balanced IF amplifier

Procurement Notes

Verify that the specific order suffix #TRPBF corresponds to tape and reel packaging as indicated in official documentation. Confirm the 'B' grade designation indicates the absence of guaranteed OIP3 testing at 150MHz compared to A-grade devices. Ensure compatibility with the required 24-lead QFN package dimensions and exposed pad thermal requirements during procurement planning.

Selection Notes

Select this component when a fixed-gain differential amplifier is required for frequencies extending down to 100kHz. The SiGe process offers advantages over GaAs or GaN technologies regarding low-frequency noise performance. Consider the Grade B specification if strict OIP3 guarantees at 150MHz are not critical for the application, noting that A-grade versions offer tested linearity specifications.

Part Context

This part belongs to the LTC6432-15 family of ultra-high dynamic range differential amplifiers. It shares the same core functionality and pinout with other grades (such as LTC6432AIUF-15) but differs in manufacturing binning and linearity guarantees. The device is housed in a 4mm x 4mm 24-lead QFN package designed for thermal management and low inductance.

Replacement Considerations

LTC6432AIUF-15#TRPBF is a verified substitute offering A-grade linearity guarantees. For single-ended applications, the LTC6433-15 provides similar performance characteristics without differential signaling.