SN761681 Datasheet PDF Download, etcTI





(PDF) SN761681 Datasheet Download

Part Number SN761681
Description TV TUNER IC
Manufacture etcTI
Total Page 20 Pages
PDF Download Download SN761681 Datasheet PDF

Features: www.ti.com FEATURES • Single-Chip Mixe r/Oscillator and PLL Synthesizer • Th ree-Band Local Oscillator • I2C Bus P rotocol (Bidirectional Data Transmissio n) • 30-V Tuning Voltage Output • F our NPN-Type Band-Switch Drivers • Pr ogrammable Reference Divider Ratio (512 , 640, or 1024 ) • 5-V Power Supply 30-Pin TSSOP Package APPLICATIONS TV • VCR/DVD Recorder • Set-Top B ox DESCRIPTION The SN761681 is a synthe sized tuner IC designed for TV tuning s ystems. The circuit consists of a PLL s ynthesizer, three-band local oscillator and mixer, 30-V output tuning amplifie r, four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and refer ence divider are controlled by I2C bus protocol. Tuning step frequency is sele ctable by this reference divider ratio for a crystal oscillator. SN761681 TV TUNER IC SLES165 – DECEMBER 2005 DBT PACKAGE (TOP VIEW) 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.

Keywords: SN761681, datasheet, pdf, etcTI, TV, TUNER, IC, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

www.ti.com
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 1024 )
5-V Power Supply
30-Pin TSSOP Package
APPLICATIONS
TV
VCR/DVD Recorder
Set-Top Box
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 reference divider
are controlled by I2C bus protocol. Tuning step
frequency is selectable by this reference divider ratio
for a crystal oscillator.
SN761681
TV TUNER IC
SLES165 – DECEMBER 2005
DBT PACKAGE
(TOP VIEW)
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 OUT1
IF OUT2
CP
VTU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30 UHF RF IN2
29 UHF RF IN1
28 VHF RF IN
27 RF GND
26 MIX OUT2
25 MIX OUT1
24 BS4
23 BS2
22 BS1
21 BS3
20 ADC
19 AS
18 SDA
17 SCL
16 XTAL
P0038-01
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 © 2005, Texas Instruments Incorporated

                    
                    






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