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AD28MS901KR, AD28MSP, AD28MSP01

Table of contents:
Info of AD28MS901KR
Info of AD28MSP
Info of AD28MSP01

AD28MS901KR, AD28MSP, AD28MSP01 Selling Leads, Datasheet

MFG:ANALOG Package Cooled:SOP28W D/C:09+

AD28MS901KR, AD28MSP, AD28MSP01 Datasheet download

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Part Number: AD28MS901KR

MFG: ANALOG

Package Cooled: SOP28W

D/C: 09+

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AD28MSP01 General Description

The AD28msp01 is a complete analog front end for high performance DSP-based modems. The device includes all data conversion, filtering, and clock generation circuitry needed to implement an echo-cancelling modem with a single host digital signal processor. Software-programmable sample rates and clocking modes support all established modem standards. The AD28msp01 simplifies overall system design by requiring only +5 volts.

The inclusion of on-chip anti-aliasing and anti-imaging filters and 16-bit sigma-delta ADC and DAC ensures a highly integrated and compact solution for FAX or data MODEM applications. Sigma-delta conversion technology eliminates the need for complex off-chip anti-aliasing filters and sample-and-hold circuitry.

The AD28msp01 utilizes advanced sigma-delta technology to move the entire echo-cancelling modem implementation into the digital domain. The device maintains a 72 dB SNR throughout all filtering and data conversion. Purely DSP-based echo cancellation algorithms can thereby maintain robust bit error rates under worst-case signal attenuation and echo amplitude conditions.

The AD28msp01's on-chip interpolation filter resamples the received signal after echo cancellation in the DSP, freeing the processor for other voice or data communications tasks.

AD28MSP01 Maximum Ratings

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
Input Voltage . . . . . . . . . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
Output Voltage Swing . . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
Operating Temperature Range (Ambient) . . . . . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . 55°C to +150°C
Lead Temperature (5 seconds) SOIC . . . . . . . . . . . . +280°C

AD28MSP01 Features

·Complete Analog l/O Port for DSP-Based FAX/MODEM Applications
·Linear-Coded 16-Bit Sigma-Delta ADC
·Linear-Coded 16-Bit Sigma-Delta DAC
·On-Chip Anti-Alias and Anti-lmage Filters
·Digital Resampling/lnterpolation Filter
·7.2 kHz, 8.0 kHz, and 9.6 kHz Sampling Rates
·8/7 Mode for 8.23 kHz, 9.14 kHz, and 10.97 kHz
·Sampling Rates
·Synchronous and Asynchronous DAC/ADC Modes
·Bit and Baud Clock Generation
·Transmit Digital Phase-Locked Loop for Terminal
·Synchronization
·Independent Transmit and Receive Phase Adjustment
·Serial Interface to DSP Processors
·+5 V Operation with Power-Down Mode
·28-Pin Plastic DlP/44-Lead PLCC/28-Lead SOIC

AD28MSP01 Typical Application

·High Performance DSP-Based Modems
·V.32ter, V.32bis, V.32, V.22bis, V.22, V.21,
·Bell 212A, 103
·Fax and Cellular-Compatible Modems
·V.33, V.29, V.27ter, V.27bis, V.27, V.26bis
·Integrated Fax, Modem, and Speech Processing

AD28MSP01 Connection Diagram

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