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TEA1083A

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 onl...

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TEA1083A: 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 ampl...

TEA1083A Data Sheet

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Part Number:
TEA1083A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VSUP



VSUP



VSREF

V

ISUP

Ptot



Tstg

Tamb

Tj
 Supply voltage
continuous
during switch-on or line interruption

Repetitive supply voltage from 1 ms to
5 s with 12 W current limiting resistor
in series with supply

Supply reference voltage

Voltage on all other pins

Supply current

Total power dissipation
TEA1083
TEA1083A
TEA1083AT

Storage temperature range

Operating ambient temperature range

Junction temperature

see Fig.6

Tamb = 75 °C; Tj = 125 °C		 -



-


-

VSS- 0.5

VSS - 0.5

-

-
-
-
-40

-25

-		 12


13.2


28

VSUP + 0.5

VBB + 0.5

120

500
769
555

+125

+75

+125		 V


V


V

V

V

mA

mW
mW
mW

°C

°C

°C




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.

The loudspeaker amplifier, which consists of a preamplifier and a power amplifier, amplifies the received line signals from the transmission circuit when enabled via the LSE input. The loudspeaker amplifier can also be used to amplify dialling tones from the dialler IC. The poweramplifier contains a push-pull output stage to drive the loudspeaker in a Single Ended Load (SEL) configuration.

The internal voltage stabilizer can be used to supply external devices. By activating the power-down (PD) input of the TEA1083A, the current consumption of the circuit will be reduced, this enables pulse dialling or flash (register recall).

An internal start circuit ensures normal start-up of the transmission IC.




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