SN761640 Datasheet PDF Download, etcTI





(PDF) SN761640 Datasheet Download

Part Number SN761640
Description DIGITAL TV TUNER IC
Manufacture etcTI
Total Page 30 Pages
PDF Download Download SN761640 Datasheet PDF

Features: SN761640 www.ti.com ................... ....................................... ....................................... ....................................... ....................................... ............... SLES237 – OCTOBER 200 8 DIGITAL TV TUNER IC FEATURES 1 • I ntegrated Mixer/Oscillator/PLL and IF G CA • VHF-L, VHF-H, UHF 3-Band Local O scillator • RF AGC Detector Circuit I2C Bus Protocol Bidirectional Data Transmission • High-Voltage Tuning Vo ltage Output • Four NPN-Type Band Swi tch Drivers • One Auxiliary Port/5-Le vel ADC • Crystal Oscillator Output Programmable Reference Divider Ratio (24/28/32/64/80/128) • IF GCA Enable /Disable Control • Selectable digital IFOUT and Analog IFOUT • Standby Mod e • 5-V Power Supply • 44-Pin Thin Shrink Small-Outline Package (TSSOP) AP PLICATIONS • Digital TVs • Digital CATVs • Set-Top Boxes DBT PACKAGE (T OP VIEW) VLO OSC B VLO OSC C VHI OSC B VHI OSC C UHF OSC B1 UHF OSC C1 UHF OSC C2 UHF OSC B2 OSC GND CP VTU IF GND AIF OUT DIF OUT1 DIF O.

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SN761640
www.ti.com .............................................................................................................................................................................................. SLES237 – OCTOBER 2008
DIGITAL TV TUNER IC
FEATURES
1
Integrated Mixer/Oscillator/PLL and IF GCA
VHF-L, VHF-H, UHF 3-Band Local Oscillator
RF AGC Detector Circuit
I2C Bus Protocol
Bidirectional Data Transmission
High-Voltage Tuning Voltage Output
Four NPN-Type Band Switch Drivers
One Auxiliary Port/5-Level ADC
Crystal Oscillator Output
Programmable Reference Divider Ratio
(24/28/32/64/80/128)
IF GCA Enable/Disable Control
Selectable digital IFOUT and Analog IFOUT
Standby Mode
5-V Power Supply
44-Pin Thin Shrink Small-Outline Package
(TSSOP)
APPLICATIONS
Digital TVs
Digital CATVs
Set-Top Boxes
DBT PACKAGE
(TOP VIEW)
VLO OSC B
VLO OSC C
VHI OSC B
VHI OSC C
UHF OSC B1
UHF OSC C1
UHF OSC C2
UHF OSC B2
OSC GND
CP
VTU
IF GND
AIF OUT
DIF OUT1
DIF OUT2
IFGCA CTRL
VCC
IF GCA IN1
IF GCA IN2
IF GCA GND
IF GCA OUT2
IF GCA OUT1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44 BS4
43 UHF RF IN1
42 UHF RF IN2
41 VHI RF IN
40 VLO RF IN
39 RF GND
38 MIX OUT2
37 MIX OUT1
36 IF IN
35 RF AGC OUT
34 RF AGC BUF
33 BS3
32 BS2
31 BS1
30 SDA
29 SCL
28 AS
27 BUS GND
26 P5/ADC
25 XTAL OUT
24 XTAL2
23 XTAL1
DESCRIPTION
The SN761640 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems. The circuit
consists of a PLL synthesizer, three-band local oscillator and mixer, RF AGC detector circuit, and IF
gain-controlled amplifier. The SN761640 is available in a small-outline package.
1
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 © 2008, Texas Instruments Incorporated

                    
                    






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