Datasheet Details
| Part number | SN761644 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 929.82 KB |
| Description | DIGITAL TV TUNER IC |
| Datasheet |
 SN761644 Datasheet
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General Description
The SN761644 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 SN761644 is available in a small-outline package.
Key Features
- 1.
- Integrated Mixer/Oscillator/PLL and IF GCA.
- Mirror Pin Package of SN761640.
- VHF-L, VHF-H, UHF 3-Band Local Oscillator.
- RF AGC Detector Circuit.
- I2C Bus Protocol Bidirectional Data Transmission.
- High-Voltage Tuning Voltage Output.
- Four NPN-Type Band Switch Drivers.
- One Auxiliary Port/5-Level ADC.
- Crystal Oscillator Output.
- Programmable Reference Divider Ratio (24/28/32/64/80/128).
- IF GCA Enable/D.