TEA1093 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TEA1093

Hands-free IC

Philips Electronics 

Philips Semiconductors

Hands-free IC

Product specification

TEA1093

FEATURES

• Line powered supply with:

– adjustable stabilized supply voltage

– power down function

• Microphone channel with:

– externally adjustable gain

– microphone mute function

• Loudspeaker channel with:

– externally adjustable gain

– dynamic limiter to prevent distortion

– rail-to-rail output stages for single-ended or

bridge-tied load drive

– logarithmic volume control via linear potentiometer

– loudspeaker mute function

• Duplex controller consisting of:

– signal envelope and noise envelope monitors for both

channels with:

externally adjustable sensitivity

externally adjustable signal envelope time constant

externally adjustable noise envelope time constant

– decision logic with:

externally adjustable switch-over timing

externally adjustable idle mode timing

externally adjustable dial tone detector in receive

channel

– voice switch control with:

adjustable switching range

constant sum of gain during switching

constant sum of gain at different volume settings.

APPLICATIONS

• Line-powered telephone sets with

hands-free/listening-in functions.

GENERAL DESCRIPTION

The TEA1093 is a bipolar circuit intended for use in

line-powered telephone sets. In conjunction with a

member of the TEA1060 family or PCA1070 transmission

circuits, the device offers a hands-free function for line

powered telephone sets. It incorporates a supply, a

microphone channel, a loudspeaker channel and a duplex

controller with signal and noise monitors on both channels.

ORDERING INFORMATION

TYPE NUMBER

TEA1093

TEA1093T

NAME

DIP28

SO28

PACKAGE

DESCRIPTION

plastic dual in-line package; 28 leads (600 mil)

plastic small outline package; 28 leads; body width 7.5 mm

VERSION

SOT117-1

SOT136-1

1996 Feb 09

2

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