SDA5231-5

The SDA5231-5 is an integrated circuit specifically designed for teletext signal processing in television systems. It facilitates the separation of teletext information from standard TV signals, enabling microcontroller-based control via an I2C bus interface. The device's core functions include the processing of teletext data, generation of a stable system clock, and the switching of High Voltage (HV) synchronization signals.

Key features of the SDA5231-5 include crystal-stable data clock regeneration at a bit rate of 6.9375MHz, and the separation and regeneration of teletext information. It also handles the separation of horizontal and vertical synchronization signals. The component offers phase-locked coupling of a 6MHz oscillator with composite video and allows for optional adjustment to 1V or 2.5V composite video levels. It can process externally separated teletext data and outputs negative and positive synchronous signals to the television set.

With a maximum supply voltage rating of 13.2V and an operating ambient temperature range of 0 to 70°C, the SDA5231-5 is suitable for various television applications. Its absolute maximum ratings include specific output current limits for VSC, TTD, TTC, F6, and sync signals, ensuring reliable operation within defined parameters. The device also has a thermal resistance of 50K/W (system-air).