Description: The LC72146 is a Phase-Locked Loop (PLL) Frequency Synthesizer LSI circuit designed for electronic tuning in car stereo systems. This component facilitates the development of high-performance, multifunctional electronic tuning systems across VHF, MW, and LW bands. It is manufactured by Sanyo Semiconductor Corporation.
The LC72146 operates by utilizing a phase-locked loop architecture, which allows it to maintain a stable output frequency that is locked to a reference frequency. This is particularly beneficial for applications requiring precise frequency control, such as in car audio systems where tuning accuracy is essential for optimal reception of radio signals.
The device integrates several functional blocks, including a frequency divider, a phase comparator, and a voltage-controlled oscillator (VCO). The frequency divider reduces the input frequency to a manageable level for the phase comparator, which then compares the phase of the divided frequency with the reference frequency. Any phase difference is converted into a control voltage that adjusts the VCO, thus ensuring that the output frequency remains locked to the desired channel frequency.
The LC72146 supports various modulation schemes and can be configured for different frequency bands, making it versatile for use in both commercial and custom audio applications. Its design allows for easy integration with microcontrollers or other digital devices, facilitating the development of sophisticated tuning interfaces that can include features such as automatic frequency scanning, preset station memory, and digital display output.
Overall, the LC72146 is a robust solution for electronic tuning in automotive audio systems, providing reliable performance and flexibility for a wide range of tuning applications.The LC72146 is a PLL Frequency Synthesizer LSI circuit for electronic tuning in car stereo systems. The LC72146 supports the construction of high-performance, multi- functional electronic tuning systems for the VHF MW, and LW bands. By Sanyo Semiconductor Corporation
A low-power VHF TV transmitter is an essential tool for video enthusiasts, allowing the transmission of signals from a VCR to any television in a home or backyard setting. This device enables the convenience of watching movies by the pool...
A high-efficiency, simple two-transistor VHF amplifier electronic circuit project can be developed using the provided circuit diagram. This VHF amplifier circuit achieves a significant efficiency with a gain of approximately 16 dB and does not require any tuning or alignment...
The AA-7 active antenna consists of two active components: Q1 (an MFE201 N-channel dual-gate FET) and Q2 (a 2SC2570 VHF silicon transistor), which form the foundation for two independent, switchable RF preamplifiers.
The AA-7 active antenna is designed to enhance the...
This document presents a high-performance RF amplifier designed for the entire VHF broadcast and PMR band (100-175 MHz), which can be constructed without the need for specialized test equipment. The grounded-gate configuration offers inherent stability without requiring neutralization, provided that...
The RF stage of the receiver utilizes a transistor VT1, functioning as both a mixer and a local oscillator while also serving as a synchronous detector. A headphone cable acts as an antenna, capturing signals that are directed to the...
This design circuit outlines a simple, low-cost, and ultra-compact VHF/UHF Low-Noise Amplifier (LNA) that can be implemented using the MAX2664 and MAX2665 devices, which are specifically tailored for VHF/UHF applications. The MAX2664 operates within the UHF frequency range of 470...
The intelligent discussion of VHF systems necessitates an understanding of how VHF energy propagates through a system. At VHF frequencies, the wavelength is relatively short, calculated as F/983, where F is the frequency in MHz. For example, a typical 150...
I wanted a robust, portable, compact antenna usable for horizontal and vertical polarisation to take along with my FT-817 when I go on vacation, camping etc. I also wanted the dipole to cover the VHF and UHF bands and if...
There are many individuals interested in listening to frequencies within the VHF range of 108 to 132 MHz. This VHF AM converter is designed to convert signals from a frequency band of 106 to 150 MHz, allowing users to access...
We use cookies to enhance your experience, analyze traffic, and (if you allow) serve personalized ads.
By clicking Accept All, you agree to our use of cookies.
Learn more