LTC6430AIUF-20#TRPBF

Overview

The LTC6430AIUF-20#TRPBF is a high linearity differential RF/IF amplifier and ADC driver manufactured by Analog Devices Inc. It operates from a single 5V supply, consuming 850mW of DC power. The device features a 20.8dB gain and a -3dB bandwidth extending from 20MHz to 2060MHz. It utilizes a SiGe BiCMOS process and is housed in a 4mm x 4mm, 24-lead QFN package with an exposed thermal pad. A-grade devices are tested and guaranteed for OIP3 at 380MHz.

Feature Summary

• High linearity differential architecture designed for driving high-resolution, high-speed ADCs with excellent linearity beyond 1000MHz.
• Internally matched to 100Ω differential source and load impedance with on-chip bias and temperature compensation.
• Capable of functioning as a 50Ω wideband balanced amplifier or a 75Ω CATV amplifier using appropriate baluns.
• Utilizes a high-performance SiGe BiCMOS process for repeatability and low associated output noise.

Applications

• Differential ADC Driver
• Differential IF Amplifier
• OFDM Signal Chain Amplifier
• 50Ω Balanced IF Amplifier
• 75Ω CATV Amplifier

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the A-grade designation ensures minimum OIP3 performance at 380MHz, distinguishing it from B-grade variants. Ensure compatibility with the 4mm x 4mm QFN footprint during procurement planning.

Selection Notes

Select this part for applications requiring high linearity and low noise in a compact form factor. The internal matching simplifies design by eliminating external matching networks. Consider the thermal requirements of the exposed pad for heat dissipation. Verify that the operating frequency range aligns with the system's signal bandwidth needs.

Part Context

This component belongs to the LTC6430-YY series of differential gain block amplifiers. It is functionally related to the single-ended LTC6431-20. The device is optimized for ease of use, requiring minimal support components while delivering consistent performance across environmental changes due to internal compensation circuits.

Replacement Considerations

LTC6430BIUF-20#TRPBF

FAQ

What distinguishes the A-grade from the B-grade version?

A-grade devices are tested and guaranteed for OIP3 at 380MHz, whereas B-grade devices do not have this specific guarantee.

How is the chip temperature monitored?

An optional on-chip temperature diode is accessible via the T_DIODE pin, which can be forward biased to indicate die temperature.