SN761678

更新时间： 2024-11-06 11:58:15

品牌	Logo	应用领域
德州仪器 - TI		录像机电视
页数	文件大小	规格书
20页	331K
描述
TV/VCR TUNER

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数据手册

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SN761678 数据手册

SN761678

TV/VCR TUNER

SLES104 − DECEMBER 2003

Single Chip Mixer/Oscillator and

Synthesizer

4-Channel NPN-Type Bandswitch Drivers

Programmable Reference Divider Ratio

(512, 640, or 1024)

3-Band Local Oscillator

I C Bus Protocol

5-V Power Supply

Bidirectional Data Transmission

30-V Tuning Voltage Output

30-Pin TSSOP Package

DBT PACKAGE

(TOP VIEW)

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 IN

VHF RF IN

BS4

RF GND

MIX OUT2

MIX OUT1

IF IN2

IF IN1

BS2

BS1

BS3

ADC

VCC

IF OUT

VTU

XTAL

SDA

SCL

description

The SN761678 is a single-chip, synthesized tuner IC designed for TV/VCR tuning systems. The circuit consists

of a PLL synthesizer, 3-band local oscillators and mixer, 30-V output tuning amplifier, four NPN band switch

drivers, and is available in a small package outline. Fifteen-bit programmable counter and reference divider is

controlled by I C bus protocol. Tuning step frequency is selectable by this reference divider ratio for a 4-MHz

XTAL oscillator.

NOTE: The products, their specifications, service and other information appearing in this

publication are subjected to change by Texas Instruments without notice.

This device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during

storage or handling to prevent electrostatic damage to the MOS gates.

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 Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...20

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