SN761645 Description
The SN761645 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems. The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, RF AGC detector circuit, and IF gain controlled amplifier, and is available in a small outline package. ORDERING INFORMATION For the most current package and ordering information, see the Package Option Addendum at the end of this document,...
SN761645 Key Features
- Integrated Mixer/Oscillator/PLL and IF GCA
- VHF-L, VHF-H, UHF 3-Band Local Oscillator
- RF AGC Detector Circuit
- I2C Bus Protocol
- Seven-Step Charge Pump Current
- Four NPN Emitter-Follower Type Band Switch
- One Auxiliary Port/5-Level ADC
- Programmable Reference Divider Ratio
- Crystal Oscillator 4-MHz/16-MHz Support
- Selectable Digital IFOUT and Analog IFOUT