LC72191JMA-AH

Overview

The LC72191JMA-AH is a PLL frequency synthesizer designed for electronic tuning in car stereo applications. It operates with a supply voltage of 3.5V to 6.5V and supports an operating temperature range of -40°C to 85°C. The device features a built-in prescaler allowing FMIN input up to 160 MHz, ten selectable reference frequencies, and a general-purpose counter for IF signal measurement. It utilizes a 24-SDIP through-hole package and communicates via CCB serial data I/O.

Feature Summary

• Integrated PLL frequency synthesizer optimized for AM/FM tuner circuits
• Built-in prescaler supporting local oscillator inputs up to 160 MHz at 100 mVrms
• Ten selectable reference frequencies ranging from 1 kHz to 100 kHz
• General-purpose 20-bit binary counter for frequency and period measurement

Applications

• AM/FM car stereo tuners
• Electronic tuning systems requiring high mounting density
• Station detection using IF counter functionality

Procurement Notes

Verify the specific suffix 'A-H' against official documentation, as standard datasheets list variants like LC72191JM without this exact ending. Confirm availability status, as related models such as LC72146MA-AH have been discontinued. Ensure the 24-SDIP package matches the required board layout specifications.

Selection Notes

Select this component when designing AM/FM tuners requiring a single-chip PLL solution with integrated prescaler capabilities. The device supports both sine wave and pulse wave inputs for different frequency ranges. Ensure the system controller can handle the CCB protocol and that the 24-SDIP package fits the mechanical constraints.

Part Context

This part belongs to the LC72191 family, which includes LC72191 (DIP24S), LC72191M (MFP24), and LC72191JM (MFP24S). The JMA variant specifically denotes the 24-SDIP through-hole package configuration. The family is originally based on Sanyo Electric designs now managed by onsemi.

Replacement Considerations

Direct replacements include other members of the LC72191 family such as LC72191 or LC72191JM, provided the package type (DIP vs MFP) is compatible with the PCB design. Verify pin compatibility and electrical characteristics before substitution.