Description

The TDA8822TD is a programmable modulator that generates an RF TV channel from a baseband video signal and a baseband audio signal. It supports negative video and FM sound standards such as B/G, I, D/K, M, and N standards.

Specifications and features

- 5 V power supply
- Video amplifier with clamp and white clip circuits
- Programmable video modulation depth
- FM sound modulator (4.5, 5.5, 6.0, and 6.5 MHz)
- Programmable picture-to-sound ratio
- Programmable deviation of the sound subcarrier
- Input for modulated NICAM sound subcarrier or second-frequency-modulated sound subcarrier
- Asymmetrical or symmetrical RF output buffer
- Symmetrical RF oscillator for UHF or VHF band selection
- One I2C-bus programmable output port
- On-chip Phase-Locked Loop (PLL) frequency synthesizer for RF carrier
- On-chip PLL frequency synthesizer for sound carrier
- On-chip power supply regulator
- On-chip I2C-bus and/or hardware-controlled Test Pattern Signal Generator (TPSG) with LED driver
- RF output switch-off during tuning

Application Scenarios

- Video recorders
- Cable converters
- Satellite receivers
- Set top boxes

Comparison

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