LTC6430AIUF-15#TRPBF

Overview

The LTC6430AIUF-15#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 800mW of DC power. The device features a 20MHz to 2000MHz bandwidth with a typical gain of 15.2dB. Key electrical specifications include a noise figure of 3.0dB at 240MHz, an output third-order intercept point (OIP3) of 50.0dBm at 240MHz for the A-grade, and a P1dB of 24.0dBm. It utilizes a SiGe BiCMOS process and is housed in a 4mm x 4mm, 24-lead QFN package.

Feature Summary

• Differential architecture designed to drive 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 using 1:2 baluns or a 75Ω CATV amplifier using 1:1.33 baluns.
• A-grade devices are tested and guaranteed for OIP3 performance at 240MHz.

Applications

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

Procurement Notes

Verify that the specific order suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the A-grade designation ensures the guaranteed minimum OIP3 specification at 240MHz, distinguishing it from the B-grade variant which lacks this guarantee. Ensure compatibility with the specified operating temperature range of –40°C to 85°C for the intended application environment.

Selection Notes

Select this component when a fixed-gain differential amplifier is required to interface directly with high-speed analog-to-digital converters. The internal matching to 100Ω simplifies circuit design by reducing external component count. Consider the A-grade version if strict linearity guarantees at 240MHz are critical for system performance. Evaluate thermal management requirements due to the 800mW power consumption within the compact QFN package.

Part Context

This part belongs to the LTC6430-15 series of high linearity differential RF/IF amplifiers. It is distinct from the single-ended LTC6431-15, offering superior common-mode noise rejection and second harmonic distortion performance. The device is fabricated using a high-performance SiGe BiCMOS process, providing better repeatability compared to similar GaAs amplifiers.

Replacement Considerations

LTC6430BIUF-15#TRPBF