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參數(shù)資料
| 型號： | SN761678BDBT |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TV TUNER IC |
| 中文描述： | 電視調(diào)諧器集成電路 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 321K |
| 代理商： | SN761678BDBT |
www.ti.com
FEATURES
Single-Chip Mixer/Oscillator and
Phase-Locked Loop (PLL) Synthesizer
Three-Band Local Oscillator
I
2
C Bus Protocol (Bidirectional Data
Transmission)
30-V Tuning Voltage Output
Four NPN-Type Band-Switch Drivers
Programmable Reference Divider Ratio
(512, 640, or 1024)
External 4-Pin Intermediate Frequency (IF)
Filter Between Mixer Output and IF Amplifier
Input
5-V Power Supply
30-Pin Thin Shrink Small-Outline Package
(TSSOP)
APPLICATIONS
TVs
VCR/DVD Recorders
Set-Top Boxes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
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
UHF RF IN
VHF RF IN
BS4
RF GND
MIX OUT2
MIX OUT1
IF IN2
IF IN1
BS2
BS1
BS3
ADC
AS
SDA
SCL
DBT PACKAGE
(TOP VIEW)
P0038-01
DESCRIPTION
The SN761678B is a synthesized tuner IC designed for TV tuning systems. The circuit consists of a
phase-locked loop (PLL) synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, and four
NPN band-switch drivers. The device is available in a small-outline package. A 15-bit programmable counter and
reference divider are controlled by I
2
C bus protocol. Tuning step frequency is selectable by this reference divider
ratio for a crystal oscillator.
SN761678B
TV TUNER IC
SLES185–JUNE 2006
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This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
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 2006, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN761678BDBTG4 | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDBTR | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDBTRG4 | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDCHR | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678DBT | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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