LA3430 VCO Non-adjusting Multi-PLL For FM Car Radios

The LA4165M Recording-Playback Integrated Circuit (IC) integrates the necessary functions to design recording and playback systems, as well as motor control circuits, for both micro and standard cassette tape recorders into a single chip. It features automatic audio input sensing during recording with a continuously adjustable on-off threshold using the playback volume control. Additionally, there is an LED indicator to show when recording is in progress. The recording and playback modes can be switched using a single control pin. The LA4165M includes an on-chip preamplifier, power amplifier, and automatic level control (ALC) circuits, and is designed to operate with a 3V power supply. This device is available in a 24-pin plastic multi-function package (MFP) from Sanyo Semiconductor Corporation.

The LA4165M is a versatile recording-playback IC that is particularly suited for cassette tape recorders, providing an efficient solution for audio applications. The integration of multiple functions into a single chip reduces the overall component count, simplifying the design process and enhancing reliability.

The automatic audio input sensing feature allows for seamless recording initiation, eliminating the need for manual adjustments. This is particularly beneficial in applications where user interaction is minimal or where automatic operation is preferred. The ability to adjust the on-off threshold steplessly through the playback volume control ensures that recordings can be made with optimal audio quality, adapting to varying input levels.

The single control pin for toggling between recording and playback modes simplifies the user interface and reduces the complexity of the control circuitry, making the LA4165M ideal for compact designs. The inclusion of an LED indicator provides a visual cue for users, enhancing the usability of the device during recording sessions.

The on-chip preamplifier and power amplifier are crucial for ensuring that audio signals are adequately amplified for both recording and playback, while the automatic level control (ALC) circuits help maintain consistent audio levels, preventing distortion and ensuring high fidelity. The design's compatibility with a 3V power supply makes it suitable for battery-operated devices, contributing to energy efficiency and longer operational life.

Overall, the LA4165M is a well-engineered solution for cassette tape recorders, combining essential functionalities in a compact package, thereby facilitating the development of high-quality audio recording and playback systems.The LA4165M Recording-Playback IC combines the functions required to design the recording and playback systems and Motor Control circuits for micro- or standard-cassette tape recorders into a single chip. Functions provided include Automatic Audio input sensing during recording with stepless setting of the on-off threshold using the playback Volum

e Control and LED indication that recording is in progress. Recording and playback modes CAN be toggled using a single control pin. The LA4165M also has an on-chip preamp, power amp and ALC circuits, and has been designed to operate with a 3V power supply. The device is available in 24-pin plastic MFPs. By Sanyo Semiconductor Corporation 🔗 External reference