AS2524B datasheet(7/20 Pages) AMSCO

Part #	AS2524B

Description	Telephone Line Interface and Speakerphone Circuit

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Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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Data Sheet AS2523, AS2524, AS2524B

austriamicrosystems

Revision 1.13

Page 6 of 19

0mV

~

100mV

RO

RECI

+3dB

+14dB

Voice

switching

speech

Gmax = -4dB … +16dB (Vol)

Gmin = -33dB

Offset

comp

Compress

Peak

detector

Cmicoffset

+23dB

CBckgnd

Compress

Peak

detector

Compress

Peak

detector

LINE

Gmax = +9dB

Gmin = -21dB … -40dB (Vol)

+9dB

RECV

FT1

CBN

+8dB

~

+17dB

TXO

TXV

Speech

Mode

Rx-gain

Tx-gain

Remark

Rx > Tx_atten

X

Receive

0db to -20dB

-50dB to -30dB

adjustable with VOL-setting

Tx_atten > Rx

NO

Idle

-25

middle position

Tx_atten > Rx

YES

Transmit

-50dB

0dB

independent of VOL-setting

-50dB

-25dB

0dB

TX-mode

RX-mode

IDLE-mode

Vol min

Vol default

Vol max

TX-gain

RX-gain

-10dB

-20dB

-40dB

-30dB

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AS2524B Datasheet(PDF) 7 Page - ams AG

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