ST75951 datasheet(1/21 Pages) STMICROELECTRONICS

部件名	ST75951

功能描述	V.34/56K ANALOG FRONT END

PDF	21 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 21 page

ST75951

V.34/56K ANALOG FRONT END

February 1999

TQFP48 (7 x 7 x 1.4mm)

(Full Plastic Quad Flat Pack)

ORDER CODE : ST75951

.

V.34/56K MODEM ANALOG FRONT-END (AFE)

.

16 BITS OVERSAMPLING SIGMA DELTA A/D

AND D/A CONVERTERS

.

85dB DYNAMIC RANGE

.

PROGRAMMABLE SAMPLING FREQUENCY

.

AUXILIARY ANALOG INPUT

.

MODEM SIDE OF SILICON DATA ACCESS AR-

RANGEMENT (DAA) INTEGRATED WITH AFE

.

KRYPTON

ISOLATION

INC.

PATENTED

TECHNOLOGY ELIMINATE TRANSFORMER

OR LINEAR OPTO-COUPLERS

.

RING DETECT, LINE IN USE, CLID AND

OVER LOOP CURRENT DETECT

.

4 GPIO ASSOCIATED WITH 1 GENERAL

PURPOSE INTERRUPT OUTPUT

.

ANALOG AND DIGITAL LOOP-BACK MODE

.

SYNCHRONOUS SERIAL INTERFACE FOR

PROCESSORS DATA EXCHANGE

.

ON CHIP REFERENCE VOLTAGE

.

SINGLE POWER SUPPLY RANGE :

2.7V TO 5.25V

.

LOW POWER CONSUMPTION : 40mW @ 3.3V

.

TQFP48 PACKAGE

.

0.5

µM CMOS PROCESS

DESCRIPTION

ST75951 is an analog front-end designed to im-

plement modems application up to 56Kbps.

ST75951 interfaces between DSP or HSP signals

and capacitive isolation barrier.

A complete D.A.A. is made with ST952 which inter-

faces between capacitive isolation barrier and the

telephone line.

It integrates a high resolution A/D and D/A

converter and incorporates Krypton Isolation

Inc. patented silicon D.A.A. technology.

ST75951

ST952

Digital

Tip

Ring

Figure 1

1/21

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