SN761672ADAR Datasheet, PDF (1/18 Pages) Texas Instruments – TV/VCR TUNER IC

SN761672A
TV/VCR TUNER IC
SLLS437 – JANUARY 2001
D Single Chip Mixer/Oscillator and
Synthesizer
DA PACKAGE
(TOP VIEW)
D VHF-L, VHF-H, UHF 3-Band Local Oscillator
D I²C Bus Protocol
VOL OSC B
1
VOL OSC C
2
32
UHF RF IN2
31
UHF RF IN1
D Bidirectional Data Transmission
D 30-V Tuning Voltage Output
D 4-Channel NPN Type Band Switch Drivers
D Programmable Reference Divider Ratio
OSC GND
3
VHS OSC B
4
VHS OSC C
5
UHF OSC B1
6
UHF OSC C1
7
30
VHF RF IN2
29
VHF RF IN1
28
RF GND
27
MIX OUT2
26
MIX OUT1
(512, 640 or 1024)
D 5-V Power Supply
D 32-Pin TSSOP Package
UHF OSC C2
8
UHF OSC B2
9
IF GND
10
IF OUT1
11
25
BS4
24
BS3
23
BS2
22
BS1
description
SN761672A is a single chip synthesized tuner IC
designed for TV/VCR tuning systems. The circuit
consists of a PLL synthesizer, 3-band local
IF OUT2
12
V_CC
13
CP
14
VTU
15
XTAL
16
21
NC
20
ADC
19
AS
18
SDA
17
SCL
oscillators and mixer, a 30-V output tuning
amplifier, and four NPN band switch drivers. It is
NC – No internal connection
available in a small package outline. The 15-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 crystal oscillator.
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 © 2001, Texas Instruments Incorporated
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