Datasheet > SN761642

SN761642

更新时间： 2024-09-13 11:58:15

品牌	Logo	应用领域
德州仪器 - TI		电视
页数	文件大小	规格书
25页	898K
描述
DIGITAL TV TUNER IC

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SN761642 数据手册

SN761642

www.ti.com ................................................................................................................................................................................................. SLES249–AUGUST 2009

DIGITAL TV TUNER IC

FEATURES

DBT PACKAGE

(TOP VIEW)

•

Integrated Mixer/Oscillator/PLL

VHF-L, VHF-H, UHF 3-Band Local Oscillator

RF AGC Detector Circuit

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

BS4

UHF RF IN1

UHF RF IN2

VHI RF IN

VLO RF IN

RF GND

MIX OUT2

MIX OUT1

IF IN

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)

RF AGC OUT

RF AGC BUF

BS3

VTU

•

Selectable Digital IFOUT and Analog IFOUT

Standby Mode

IF GND

DIF OUT1

DIF OUT2

AIF OUT

P5/ADC

BS2

5-V Power Supply

BS1

38-Pin Thin Shrink Small-Outline Package

(TSSOP)

SDA

SCL

VCC

APPLICATIONS

XTAL1

BUS GND

XTAL OUT

•

Digital TVs

Digital CATVs

Set-Top Boxes

XTAL2

DESCRIPTION

The SN761642 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, and RF AGC detector circuit. The SN761642

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.

12 3 4 5 6 7...25

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