LUCL7590CAE-D - Telephone Ringing Driver

Datasheet Summary

Description

The L7590C Telephone Ringing Driver produces a low-frequency sinusoidal ringing signal for analog telephone loops.

This is accomplished by producing an output pulse stream that is an ampliﬁed replica of the digital input.

The output is then ﬁltered to produce a sine wave.

Features

Agere Systems

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Datasheet Details

Part number	LUCL7590CAE-D
Manufacturer	Agere Systems
File Size	269.81 KB
Description	Telephone Ringing Driver
Datasheet	LUCL7590CAE-D Datasheet
Additional preview pages of the LUCL7590CAE-D datasheet.

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Data Sheet June 1998 L7590C Telephone Ringing Driver Features s Description The L7590C Telephone Ringing Driver produces a low-frequency sinusoidal ringing signal for analog telephone loops. This is accomplished by producing an output pulse stream that is an ampliﬁed replica of the digital input. The output is then ﬁltered to produce a sine wave. The peak-to-peak output level is determined by the magnitude of the negative high-voltage dc applied to the device (up to –170 V). The required input is a 100 kHz CMOS-compatible pulse stream, pulse-width modulated (PWM) at the desired ringing frequency. The output stage consists of one upper and one lower drive transistor with an internal control circuit.

Published: Mar 27, 2005 |