L7585F datasheet(1/22 Pages) AGERE

Il numero della parte	L7585F

Spiegazioni elettronici	Full-Feature,Low-Power SLIC and Switch

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Produttore elettronici	AGERE [Agere Systems]

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Preliminary Data Sheet

September 2001

L7585F Full-Feature, Low-Power SLIC and Switch

Features

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Low active power

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Quiet tip/ring polarity reversal

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Distortion-free on-hook transmission

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35 V to 60 V power supply operation

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14 operating states:

— Forward battery active

— Reverse battery active

— Ground start (3)

— Forward battery ring open

— Reverse battery ring open

— Reverse battery tip open

— High impedance

— Ringing (2)

— Low current (2)

— Disconnect

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Self-test in all operating states

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Independent, adjustable ac and dc parameters:

— Switchhook detector threshold

— Loop current limit

— dc feed resistance

— Termination impedance

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Integrated ringing access relay

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Integrated test-in relay

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Integrated relay driver

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Integrated ring trip detector

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Thermal protection

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44-pin, surface-mount, plastic package (PLCC)

Description

The L7585F Full-Feature, Low-Power Subscriber

Loop Interface Circuit (SLIC) and Switch integrates

the battery feed, test access relay, and ringing relay

that are necessary to interface a codec to the tip and

ring of a subscriber loop into one low-power, low-cost

package. It is built using a 90 V complementary bipo-

lar (CBIC) process and a 320 V Bipolar-CMOS-

DMOS (BCDMOS) process. The device is available

in a 44-pin PLCC package.

The device can be connected directly to the Agere

Systems Inc. T8531/T8532 16-Channel Programma-

ble Codec Chip Set without the need for any ac inter-

face components.

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