Description
The CX20106A (often labeled simply as CX20106) is an original, highly sensitive integrated circuit (IC) manufactured by Sony Corporation. Housed in an 8-pin Zig-Zag In-Line Package (ZIP-8 / SIP-8), this legacy semiconductor functions as an all-in-one Infrared (IR) Remote Control Receiver Preamplifier and high-gain ultrasonic signal detection processor.
Key Features & Specifications:
- Core Function: IR Remote Control Preamplifier / Ultrasonic Signal Processing Matrix.
- Onboard Architecture: Integrates a high-gain preamplifier (~77–80 dB), automatic bias control, amplitude amplification, peak detection, and shaping circuitry.
- Adjustable Bandpass Filter: Features a tunable internal center frequency (typically configured between 30 kHz and 60 kHz via external RC networks) optimized for 38 kHz IR or 40 kHz ultrasonic tracking pathways.
- Output Configuration: Open-collector output design (requires an external pull-up resistor), making it highly compatible with microcontroller interrupt pins.
- Applications: Heavily utilized as the master infrared reception chip in legacy Sony Trinitron CRT televisions, early-generation consumer electronics remote receivers, and vintage ultrasonic distance-measurement sub-assemblies.
- Manufacturer: Sony Corporation (Japan)
An authentic, vintage New-Old-Stock (NOS) replacement semiconductor. Crucial for bench repair technicians, retro gaming enthusiasts, and classic electronics hobbyists looking to remedy dead remote control reception, unresponsive IR signals, or timing/shaping loop failures in vintage Sony hardware layouts.