LTC6432AIUF-15#TRPBF

Overview

The LTC6432AIUF-15#TRPBF is an ultra-high dynamic range differential gain block amplifier designed to drive high-resolution, high-speed ADCs. It offers a full GHz of data bandwidth for complex spectrally efficient modulation schemes or where resistance to blockers is critical. This SiGe-based device achieves low noise, incomparable linearity, and flat gain over the 100kHz to 1GHz band. It features low 1/f noise and can be used down to 100kHz. The A-grade version guarantees OIP3 at 150MHz. It operates on a single 5V supply with DC power consumption of 850mW.

Feature Summary

• Ultra-high dynamic range differential gain block amplifier
• Low 1/f noise corner enabling operation down to 100kHz
• Internally matched input and output to 100Ω differential impedance
• A-grade devices tested and guaranteed for OIP3 at 150MHz

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when placing orders. Confirm that the 'A' grade designation ensures guaranteed OIP3 performance at 150MHz, distinguishing it from the B-grade variant which lacks this guarantee. Ensure compatibility with the 24-lead QFN package requirements during procurement planning.

Selection Notes

Select this component for applications requiring simultaneous low noise, high linearity, and flat gain across a wide frequency range. The internal bias control and temperature compensation simplify design by reducing external support components. Consider the exposed pad requirement for thermal management and low inductance when evaluating the package suitability for the target PCB layout.

Part Context

This part belongs to the LTC6432-15 family, which includes both A-grade and B-grade variants. The primary distinction lies in the OIP3 guarantee at 150MHz, which is provided for A-grade devices but not for B-grade. Both grades share identical electrical characteristics and functionality, differing only in the manufacturing test verification for the third-order intercept point specification.

Replacement Considerations

For single-ended 50Ω IF gain block applications with similar performance, consider the related LTC6433-15 as an alternative.