LA1845NV-TLM-E

Overview

The LA1845NV-TLM-E is a single-chip tuner IC designed for home stereo mini systems. It provides electronic tuning functions using SD/IF-count techniques. The device integrates an MPX VCO, eliminating the need for ceramic resonators. It includes a pilot canceler and adjustment-free MUX VCO circuit to reduce additional components. Key functional blocks include FM-IF, MPX, RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, SD, PLL stereo decoder, and audio muting. It supports both FM SD sensitivity and bandwidth settings.

Feature Summary

• Integrated MPX VCO eliminates requirement for external ceramic resonators
• Built-in adjacent channel interference rejection function at 114kHz and 190kHz
• Supports both SD and IF-count tuning techniques
• Incorporates pilot canceler for improved signal processing

Applications

• Mini system home stereo tuners
• FM radio receiver circuits
• Single-chip tuner modules

Procurement Notes

Verify the complete ordering number including suffixes such as TLM-E against official Sanyo documentation to ensure correct package type and tape-and-reel configuration. Confirm that the specific variant matches the required voltage and power dissipation ratings for the target application environment. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component for applications requiring a compact single-chip solution for FM stereo tuning. The integrated VCO and pilot canceler simplify the bill of materials by removing passive components. Ensure the design utilizes the supported SD or IF-count technique. Verify that the operating temperature range meets the environmental requirements of the final product assembly.

Part Context

This part belongs to the LA1845 series from Sanyo Semiconductor. The series is characterized as a monolithic linear IC for home stereo applications. The LA1845N variant serves as the base model for single-chip tuner functionality. The NV-TLM-E suffix indicates specific packaging and handling configurations provided by the manufacturer.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Sanyo semiconductor resources for direct replacements or pin-compatible alternatives within the same product family.