This post explains for the Transmitter.
The Part Number is KT0803L.
The function of this semiconductor is Monolithic Digital Stereo FM Transmitter.
The package is SOP 16 Pin Type
Preview images :
KT0803L, our new generation of low cost Monolithic Digital FM Transmitter, is designed to process high-fidelity stereo audio signal and transmit modulated FM signal over a short range. It’s based on the architecture of awardwinning KT0801 and it’s also an upgrade of KT0803K and KT0803M. The additional features added to KT0803L are standby mode through software, ALC(automatic level control), multiple reference clock, increased SNR performance and frequency response.
The KT0803L features dual 20-bit ΔΣ audio ADCs, a highfidelity digital stereo audio processor and a fully integrated radio frequency (RF) transmitter. An on-chip low-drop-out regulator (LDO) allows the chip to be integrated in a wide range of low-voltage battery-operated systems with power supply ranging from 1.6V to 3.6V. […]
A digital stereo FM transmitter is a device that allows you to broadcast an audio signal wirelessly over FM radio frequencies in stereo format. It typically takes an audio input, digitizes it, and modulates it onto an FM carrier signal for transmission.
Digital stereo FM transmitters are commonly used for a variety of applications, including personal broadcasting, drive-in theaters, community radio stations, wireless audio transmission in events or conferences, and in-car entertainment systems. They provide a convenient way to transmit high-quality stereo audio wirelessly to FM radio receivers.
1. Automatic power down power amplifier when silence is detected
2. Multiple reference clock support including from 32.768KHz to 26MHz
3. ALC (Automatic Level Control)
4. Higher SNR (Stereo: 66dB)
5. Increased audio frequency response
6. Software controlled XTAL selection
1. MP3 Player, Cellular Phone, PDA, PND,
2. Portable Personal Media player and its accessory,
3. Laptop Computer, Wireless Speaker