SN761683B Datasheet, PDF (1/20 Pages) Texas Instruments – TV TUNER IC

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FEATURES
• Single-Chip Mixer/Oscillator and
Phase-Locked Loop (PLL) Synthesizer
• Three-Band Local Oscillator and Mixer
• Inter-Integrated Circuit (I²C) Bus Protocol
(Bidirectional Data Transmission)
• 30-V Tuning-Voltage Output
• Four NPN-Type Band-Switch (BS) Drivers
• Programmable Reference Divider Ratio
(512, 640, or 1024)
• 5-V Power Supply
• 32-Pin Thin Shrink Small-Outline Package
(TSSOP)
APPLICATIONS
• TVs
• VCR/DVD Recorders
• Set-Top Boxes
DESCRIPTION
The SN761683B is a synthesized tuner IC designed
for TV tuning systems. The circuit consists of a
phase-locked loop (PLL) synthesizer, three-band
local oscillator and mixer, 30-V output tuning
amplifier, and four NPN band-switch drivers, and is
available in a small-outline package. A 15-bit
programmable counter and reference divider are
controlled by inter-integrated circuit (I²C) bus
protocol.
SN761683B
TV TUNER IC
SLES180 – MAY 2006
TSSOP PACKAGE
(TOP VIEW)
VLO OSC B 1
VLO OSC C 2
OSC GND 3
VHI OSC B 4
VHI OSC C 5
UHF OSC B1 6
UHF OSC C1 7
UHF OSC C2 8
UHF OSC B2 9
IF GND 10
IF OUT1 11
IF OUT2 12
VCC 13
CP 14
VTU 15
XTAL 16
32 UHF RF IN2
31 UHF RF IN1
30 VHF RF IN2
29 VHF RF IN1
28 RF GND
27 MIX OUT2
26 MIX OUT1
25 BS4
24 BS3
23 BS2
22 BS1
21 NC
20 ADC
19 AS
18 SDA
17 SCL
NC – No internal connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated