The TEA1083/83A is a bipolar IC designed for use in line powered telephone sets. It offers a monitoring facility of the line signal via a loudspeaker during on-hook dialling. The device is intended to be used in conjunction with a transmission circuit of the TEA1060 family.
The TEA1083 and TEA1083A are bipolar ICs designed specifically for use in line-powered telephone sets. They function as a call progress monitor via a loudspeaker during on-hook dialling and are intended to be used with transmission circuits from the TEA1060 family.
The device features an internal supply circuit that optimizes current split-up, allowing nearly all line current available for monitoring. It includes a loudspeaker amplifier with a fixed gain of 35 dB, which can be volume-controlled via a potentiometer. The TEA1083A variant additionally offers a power-down input to reduce current consumption during pulse dialling or register recall.
| Voltage gain of loudspeaker amplifier | -35 dB |
|---|---|
| Operating ambient temperature range | -25 to +75 °C |
| Supply voltage (continuous) | -12 V |
| Total power dissipation (TEA1083) | 500 mW |
| Total power dissipation (TEA1083A) | 769 mW |
The TEA1083 is designed for call progress monitoring in telephone sets with automatic on-hook dialling facilities.
No, the power-down (PD) facility is only available on the TEA1083A model.
The output stage drives the loudspeaker in a Single Ended Load (SEL) configuration.