SN761678 Datasheet PDF Download, etcTI





(PDF) SN761678 Datasheet Download

Part Number SN761678
Description TV/VCR TUNER IC
Manufacture etcTI
Total Page 21 Pages
PDF Download Download SN761678 Datasheet PDF

Features: SN761678 TV/VCR TUNER D Single Chip Mix er/Oscillator and Synthesizer D 3-Band Local Oscillator D I2C Bus Protocol D B idirectional Data Transmission D 30-V T uning 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 − D ECEMBER 2003 D 4-Channel NPN-Type Bands witch Drivers D Programmable Reference Divider Ratio (512, 640, or 1024) D 5-V Power Supply D 30-Pin TSSOP Package D BT 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 SC L description The SN761678 is a single -chip, synthesized tuner IC designed fo r TV/VCR tuning systems. The circuit co nsists of a PLL synthesizer, 3-band loc al oscillators and mixer, 30-V output t uning amplifier, four NPN band switch d rivers, and is available in a small pac kage outline. Fifteen-bit programmable counter and reference divi.

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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. 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. Fifteen-bit programmable counter and reference divider is
controlled by I2C bus protocol. Tuning step frequency is selectable by this reference divider ratio for a 4-MHz
XTAL oscillator.
NOTE: The products, their specifications, service and other information appearing in this
publication are subjected to change by Texas Instruments without notice.
This device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during
storage or handling to prevent electrostatic damage to the MOS gates.
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 2003, Texas Instruments Incorporated
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