SN761667 Datasheet, PDF (1/24 Pages) Texas Instruments – DIGITAL TV TUNER IC

www.ti.com
FEATURES
• Integrated Mixer/Oscillator/PLL and IF GCA
• VHF-L, VHF-H, UHF Three-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
(24/28/50/64/80/128)
• Low Distortion IF Gain Controlled Amplifier
• Standby Mode
• 5-V Power Supply
• 40-Pin Quad Flatpack No-Lead (QFN) Package
SN761667
DIGITAL TV TUNER IC
SLES200 – JANUARY 2007
QFN PACKAGE
(TOP VIEW)
UHF OSC B1
UHF OSC C1
UHF OSC C2
UHF OSC B2
IF GND
IF OUT1
IF OUT2
CP
VTU
V
CC
40 39 38 37 36 35 34 33 32 31
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11 12 13 14 15 16 17 18 19 20
RF GND
MIXOUT1
MIXOUT2
RF AGC OUT
RF AGC FIL
BS3
BS2
BS1
SDA
SCL
APPLICATIONS
• Digital TV
• Digital CATV
• Set-Top Box
DESCRIPTION
The SN761667 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 SN761667 is available in a small QFN package.
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 © 2007, Texas Instruments Incorporated