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ST75951 Datasheet

  • ST75951

  • V.34/56K ANALOG FRONT END

  • 196.54KB

  • 21頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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ST75951
V.34/56K ANALOG FRONT END
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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碌M CMOS PROCESS
TQFP48
(7 x 7 x 1.4mm)
(Full Plastic Quad Flat Pack)
ORDER CODE :
ST75951
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.
Figure 1
Tip
Digital
75951-30.EPS
ST75951
Digital
ST952
Ring
It integrates a high resolution A/D and D/A
converter and incorporates Krypton Isolation
Inc. patented silicon D.A.A. technology.
February 1999
1/21

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