TSA5523M Overview
The device is a single chip PLL frequency synthesizer designed for TV and VCR tuning systems. The circuit consists of a divide-by-eight prescaler with its own preamplifier, a 15-bit programmable divider, a crystal oscillator and its programmable reference divider, a phase/frequency detector bined with a charge-pump which drives the tuning amplifier, including 33 V output. Three NPN open-collector outputs are...
TSA5523M Key Features
- plete 1.4 GHz single-chip system
- Adaptive DC/DC converter driver output
- On-board tuning amplifier output
- Varicap drive disable
- Four NPN open-collector output ports (10 mA)
- Four bus-controlled bidirectional ports (NPN open-collector outputs)
- In-lock detector
- 5-step Analog-to-Digital Converter (ADC)
- Mixer/Oscillator (M/O) band-switch output
- 15-bit programmable divider