TDA7479ADTR

更新时间： 2024-11-16 12:59:35

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		消费电路商用集成电路光电二极管 LTE
页数	文件大小	规格书
7页	58K
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中文翻译

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数据手册

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TDA7479ADTR 数据手册

TDA7479

SINGLE CHIP RDS DEMODULATOR + FILTER

VERY HIGH RDS DEMODULATION QUALITY

WITH IMPROVED DIGITAL SIGNAL PROC-

ESSING

HIGH PERFORMANCE, 57KHz BANDPASS

FILTER (8th ORDER)

FILTER ADJUSTMENT FREE AND WITHOUT

EXTERNAL COMPONENTS

DIP16

SO16

PURELY DIGITAL RDS DEMODULATION

WITHOUT EXTERNAL COMPONENTS

ARI (SK INDICATION) AND RDS SIGNAL

QUALITY OUTPUT

ORDERING NUMBERS:

TDA7479

TDA7479D

4.332MHz CRYSTAL OSCILLATOR

(8.664 and 17.328MHzOPTIONAL)

LOW NOISE CMOS TECHNOLOGY

The device is made up of two sections: a cas-

caded antialiasing + switched capacitors band-

pass filter for precise RDS band selection and a

demodulatingsection that performs the extraction

od RDS data stream (RDDA) and clock (RDCL),

to be furher processed by a suitable RDS de-

coder.

LOW RADIATION

DESCRIPTION

The TDA7479 recovers the additional inaudible

RDS information which is transmittedby FM radio

broadcasting stations and operates in accord-

ance with the EBU (European Broadcasting Un-

ion) specifications.

Outputs for RDS signal quality and ARI indication

are also present.

BLOCK DIAGRAM AND TEST CIRCUIT

C1 27pF 4.332MHz C2 47pF

T57

OSCIN

OSCOUT

MPX

2nd ORDER

ANTIALIASING

FILTER

270pF

OSEL

FSEL

OSCILLATOR &

DIVIDER

RDCL

1187.5Hz

PLL

8th ORDER

SC-BANDPASS

FILTER

57KHz PLL

FILOUT

ARI

QUAL

FAST ARI

INDICATOR

QUAL DET.

V_S

100nF

POLARITY

BIPHASE DEC.

VREF

MUX

DIFF. DECODER

RDDA

10µF

INTEGRAL

BIPHASE DEC.

TEST LOGIC

EXTRES

D97AU751A

GND

February 1998

1/7

12 3 4 5 6 7

中文翻译

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