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SN761681DBTR

更新时间： 2024-09-16 04:03:31

品牌	Logo	应用领域
德州仪器 - TI		电视
页数	文件大小	规格书
20页	879K
描述
TV TUNER IC

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数据手册
替代型号

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SN761681DBTR 数据手册

SN761681

TV TUNER IC

www.ti.com

SLES165–DECEMBER 2005

FEATURES

DBT PACKAGE

(TOP VIEW)

•

Single-Chip Mixer/Oscillator and PLL

Synthesizer

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

UHF RF IN2

UHF RF IN1

VHF RF IN

RF GND

MIX OUT2

MIX OUT1

BS4

•

Three-Band Local Oscillator

I²C Bus Protocol (Bidirectional Data

Transmission)

•

30-V Tuning Voltage Output

Four NPN-Type Band-Switch Drivers

Programmable Reference Divider Ratio (512,

640, or 1024 )

BS2

•

5-V Power Supply

BS1

BS3

30-Pin TSSOP Package

VCC

ADC

IF OUT1

APPLICATIONS

IF OUT2

SDA

•

SCL

VCR/DVD Recorder

Set-Top Box

VTU

XTAL

P0038-01

DESCRIPTION

The SN761681 is a synthesized tuner IC designed for

TV tuning systems. The circuit consists of a PLL

synthesizer, three-band local oscillator and mixer,

30-V output tuning amplifier, four NPN band-switch

drivers, and is available in a small-outline package. A

15-bit programmable counter and reference divider

are controlled by I²C bus protocol. Tuning step

frequency is selectable by this reference divider ratio

for a 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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...20

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SN761681DBTR 替代型号

型号	品牌	替代类型	描述	数据表
SN761678BDCHR	TI	完全替代	IC 3-BAND, VIDEO TUNER, PDSO30, GREEN, PLASTIC, TSSOP-30, Tuner IC
SN761681DBTRG4	TI	完全替代	TV TUNER IC
SN761681DBT	TI	完全替代	TV TUNER IC

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