The LC72137-D from ON Semiconductor is a highly integrated PLL (Phase Locked Loop) frequency synthesizer designed for use in AM/FM radio receivers. This advanced IC is capable of handling both AM and FM signal processing with exceptional precision and reliability. With its compact design and versatile features, the LC72137-D is an ideal choice for a wide range of applications in the automotive industry, consumer electronics, and communication devices.

Key Features

• Frequency Range: The device supports an extensive frequency range, accommodating FM band coverage from 30 MHz to 120 MHz and AM band coverage from 1.5 MHz to 30 MHz, making it suitable for global radio standards.
• High Integration: The LC72137-D integrates several functions such as a prescaler, programmable divider, phase comparator, charge pump, and control logic in a single chip, reducing the need for external components and simplifying circuit design.
• Serial Data Control: It features a serial data input that allows for easy control using a microcontroller, enabling the selection of frequency, band, and other operational parameters with simple software commands.
• Low Power Consumption: Designed with power efficiency in mind, the LC72137-D operates with low power consumption, making it suitable for battery-powered devices.
• Minimal External Components: The synthesizer requires only a few external components, such as a reference crystal and loop filter, to create a complete PLL circuit, thereby minimizing the overall bill of materials.

Applications

The LC72137-D is versatile enough to be used in various applications, including but not limited to portable radios, car radios, hi-fi audio systems, and communication equipment. Its robust performance and ease of integration make it a go-to solution for designers looking to create high-quality, reliable radio systems.

Summary

In summary, the LC72137-D from ON Semiconductor is a sophisticated PLL frequency synthesizer that offers a blend of performance, integration, and ease of use for AM/FM radio applications. Its broad frequency range, serial control interface, and low power consumption make it a highly efficient and flexible component for modern radio receiver designs.