SN761668 Description
The SN761668 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. The SN761668 is available in a small-outline package.
SN761668 Key Features
- Integrated Mixer/Oscillator/PLL and IF GCA
- VHF-L, VHF-H, UHF 3-Band Local Oscillator
- RF AGC Detector Circuit
- External 4-Pin IF Filter Between Mixer Output
- I2C Bus Protocol Bidirectional Data
- High-Voltage Tuning Voltage Output
- Four NPN-Type Band-Switch Drivers
- One Auxiliary Port/5-Level ADC
- Crystal Oscillator Output
- Programmable Reference Divider Ratio