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TEA1083AT Datasheet

Part Name Description Manufacturer
TEA1083AT Call progress monitor for line powered telephone sets Philips
Philips Electronics Philips
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TEA1083 image

GENERAL DESCRIPTION
The TEA1083/83A is a bipolar IC which has been designed for use in line powered telephone sets. It is
intended to offer a monitoring facility of the line signal via
a loudspeaker during on-hook dialling. The TEA1083/83A is intended for use in conjunction with a transmission circuit of the TEA1060 family. The device uses a part of the available line current via the internal supply circuit.

FEATURES
• Internal supply
   – Optimum current split-up
   – Low constant current (adjustable) in transmission IC
   – Nearly all line current available for monitoring
   – Stabilized supply voltage
• Loudspeaker amplifier with a fixed gain of 35 dB
• Volume controlled by potentiometer
• Power-down input (TEA1083A only)
• Loudspeaker enable input.

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