KA2261 FM Stereo Multiplex Decoder IC DIP-16
The KA2261 FM Stereo Multiplex Decoder IC DIP-16 is a dedicated integrated circuit designed for decoding FM stereo multiplex signals in broadcast radio receivers. It integrates all essential functions required to recover left and right audio channels from a composite FM signal, making it suitable for compact and reliable stereo receiver designs. The device supports stable stereo separation and accurate pilot tone detection, ensuring high-quality audio reproduction in consumer and professional FM applications.
Features:
- PLL-based FM stereo demodulation for accurate subcarrier regeneration.
- High channel separation of 45dB typical, adjustable with external resistor.
- Built-in VCO disable function for mono mode switching.
- Integrated monaural muting circuit to reduce noise in weak signals.
- Stereo indicator lamp driver for visual reception feedback.
- Low external component count with no coils required.
- Wide supply voltage compatibility for versatile applications.
Specifications:
| Parameter | Value |
|---|---|
| Supply Voltage | 3-14VDC |
| Absolute Maximum Supply Voltage | 16VDC |
| Quiescent Current | 12mA |
| Power Dissipation | 400mW |
| Operating Temperature | -20 to 70°C |
| Channel Separation | 45dB |
| Total Harmonic Distortion (Mono) | 0.2% |
| Total Harmonic Distortion (Stereo) | 0.7% |
| Output Voltage | 85mVrms |
| Maximum Input Level | 450mV |
| Input Impedance | 20kΩ |
| SCA Rejection Ratio | 70dB |
| Signal to Noise Ratio | 75dB |
| Pilot Detection Level (Lamp On) | 65mV |
Applications:
- Integration in car stereo systems for FM radio decoding.
- Portable FM radios requiring compact stereo processing.
- Cassette players with built-in FM tuners.
- Home audio receivers for high-fidelity FM broadcast.
- Vintage equipment repairs and retrofits.
Package Include:
1x KA2261 FM Stereo Multiplex Decoder IC DIP-16
