MAS3587F datasheet(6/82 Pages) MICRONAS

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MAS 3587F

ADVANCE INFORMATION

Micronas

1.2. Application Overview

The following block diagram shows an example appli-

cation for the MAS 3587F in a portable audio recorder

device. Besides a simple controller and the external

flash memories, all required components are inte-

grated in the MAS 3587F. By means of the embedded

A/D-Converter, the MAS 3587F supports both speech

and FM radio quality audio encoding. CD-quality

encoding/decoding is achieved by using digital inputs/

embedded D/A-Converter.

Fig. 1–1 depicts a portable audio application that is

power optimized. The two embedded DC/DC convert-

ers of the MAS 3587F generate optimum power supply

voltages for the DSP core and also for state-of-the art

flash memories that typically require 2.7 to 3.3 V sup-

ply.

The performance of the DC/DC converters reaches

efficiencies up to 95%.

Fig. 1–1: Example application for the MAS 3587F in a portable audio recorder device

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A/D

Microphone

amplifier

D/A

Headphone

amplifier

Volume

line in

optional

digital in

S/PDIF

serial

Crystal

Osc./PLL

DC/DC1

I2C

DC/DC2

Audio

baseband

features

'63 &RUH

MP3

encoding/

Headphone

digital out

S/PDIF or serial

System clock

e.g. 2.7 V

e.g. 3.5 V /

I2C

µC

Display

Keyboard

PC Connector

decoding

Optional

Software

Downloads

2.2 V

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