SN761646

更新时间： 2024-11-11 12:21:43

品牌	Logo	应用领域
德州仪器 - TI		电视
页数	文件大小	规格书
26页	679K
描述
DIGITAL TV TUNER IC

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数据手册

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SN761646 数据手册

SN761646

www.ti.com

SLES251 –NOVEMBER 2009

DIGITAL TV TUNER IC

Check for Samples: SN761646

FEATURES

RHB PACKAGE

(TOP VIEW)

•

Integrated Mixer/Oscillator/PLL and IF GCA

VHF-H, UHF 2-Band Local Oscillator

I²C Bus Protocol (Fixed Address)

30-V Tuning Voltage Output

Two General Purpose Ports

32 31 30 29 28 27 26 25

Selectable Wide/Narrow Band RF AGC

Detector

UHF OSC C2

UHF OSC B2

OSC GND

RF GND

MIXOUT2

MIXOUT1

IF IN

•

Crystal Oscillator 4 MHz/8 MHz/16 MHz

Support

Programmable Reference Divider Ratio

(24/28/48/56/64/96/128)

VTU

RFAGC OUT

SDA

•

IF GCA Enable/Disable Control

Standby Mode

IF GND

IF OUT

SCL

5-V Power Supply

VCC

GPP1

32-Pin Quad Flatpack No Lead (QFN) Package

10 11 12 13 14 15 16

APPLICATIONS

•

Digital TVs

Digital CATVs

Set-Top Boxes

DESCRIPTION

The SN761646 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems. The circuit

consists of a PLL synthesizer, two-band local oscillator and mixer, RF AGC detector circuit and IF gain controlled

amplifier, and is available in a small outline 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.

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