ATR4255-ILQH

Overview

The ATR4255-ILQH is an AM/FM receiver integrated circuit designed for automotive applications. It operates within a frequency range of 70 MHz to 160 MHz and utilizes a 44-pin SSOP package. The device integrates mixer, preamplifier, AGC, and IF amplifier functions to support FM input A and B, as well as AM input B signals.

Feature Summary

• Integrates AM and FM receiver functionality including mixers, preamplifiers, and IF amplifiers
• Supports automatic gain control (AGC) for signal stability
• Provides dedicated inputs for dual FM channels and AM channel

Applications

• Automotive AM/FM radio receivers
• Car infotainment systems
• Vehicle audio processing units

Procurement Notes

Verify the specific suffix ILQH against official Microchip documentation to confirm pinout and package configuration. Ensure compatibility with existing board layouts and thermal requirements before procurement. Cross-reference datasheet revisions to avoid integration issues with older or newer silicon versions.

Selection Notes

Select this component for designs requiring a single-chip solution for AM/FM reception in the 70-160 MHz band. Consider the 44-pin SSOP form factor for space-constrained automotive enclosures. Evaluate the integrated AGC performance against system noise floor requirements.

Part Context

This part belongs to the ATR4255 series of RF miscellaneous ICs originally developed by Atmel, now under Microchip Technology. It serves as a specialized analog front-end for broadcast radio reception, distinct from general-purpose communication transceivers.

Replacement Considerations

Public confirmed substitute part numbers include ATR4255-ILSH.