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SN761678 - TV/VCR TUNER

Description

The SN761678 is a single-chip, synthesized tuner IC designed for TV/VCR tuning systems.

The circuit consists of a PLL synthesizer, 3-band local oscillators and mixer, 30-V output tuning amplifier, four NPN band switch drivers, and is available in a small package outline.

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Full PDF Text Transcription

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SN761678 TV/VCR TUNER D Single Chip Mixer/Oscillator and Synthesizer D 3-Band Local Oscillator D I2C Bus Protocol D Bidirectional Data Transmission D 30-V Tuning Voltage Output VHI OSC C VHI OSC B OSC GND VLO OSC C VLO OSC B UHF OSC B1 UHF OSC C1 UHF OSC C2 UHF OSC B2 IF GND VCC IF OUT CP VTU XTAL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 SLES104 − DECEMBER 2003 D 4-Channel NPN-Type Bandswitch Drivers D Programmable Reference Divider Ratio (512, 640, or 1024) D 5-V Power Supply D 30-Pin TSSOP Package DBT PACKAGE (TOP VIEW) 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 UHF RF IN VHF RF IN BS4 RF GND MIX OUT2 MIX OUT1 IF IN2 IF IN1 BS2 BS1 BS3 ADC AS SDA SCL description The SN761678 is a single-chip, synthesized tuner IC designed for TV/VCR tuning systems.
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