LA1844M-A-TLM-E

Overview

The LA1844M-A-TLM-E is a single-chip tuner IC designed for mini systems, providing electronic tuning functions using SD/IF-count techniques. It incorporates a pilot canceler and an adjustment-free MUX VCO circuit to reduce additional components. The device integrates MPX VCO, adjacent channel interference rejection (114kHz, 190kHz), and supports both FM SD sensitivity and bandwidth settings. Functions include AM/FM IF processing, PLL stereo decoding, S-meter, and audio muting.

Feature Summary

• Integrates MPX VCO eliminating need for ceramic resonators
• Built-in adjacent channel interference rejection at 114kHz and 190kHz
• Supports both SD and IF-count tuning techniques
• Includes pilot canceler function

Applications

• Mini system tuners
• Home stereo single-chip tuner applications
• Electronic tuning circuits requiring reduced component count

Procurement Notes

Verify the specific ordering suffix '-A' against official Sanyo documentation to confirm it denotes a valid variant or package type rather than a generic placeholder. Ensure the source document explicitly lists this exact part number in the ordering information section. Cross-reference with any final product change notifications to confirm current manufacturing status and availability.

Selection Notes

Select this component when designing mini systems requiring a single-chip solution for electronic tuning via SD or IF-count methods. It is suitable for applications needing integrated pilot cancellation and adjacent channel interference rejection without external ceramic resonators. Consider its suitability for home stereo equipment where reducing additional parts is a design priority.

Part Context

This part belongs to the LA1844 series of single-chip tuner ICs from Sanyo Semiconductor. It is engineered for use in mini systems and home stereo equipment. The series provides comprehensive tuning functions including RF amplification, mixing, oscillation, and stereo decoding within a monolithic linear IC structure.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pinouts and functional specifications with potential alternatives.