SN761681

TV TUNER

Texas Instruments

SN761681 Features

* Single-Chip Mixer/Oscillator and PLL Synthesizer

* Three-Band Local Oscillator

* I2C Bus Protocol (Bidirectional Data Transmission)

* 30-V Tuning Voltage Output

* Four NPN-Type Band-Switch Drivers

* Programmable Reference Divider Ratio (512, 640, or

SN761681 General Description

The SN761681 is a synthesized tuner IC designed for TV tuning systems. The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and referenc.

SN761681 Datasheet (784.99 KB)