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TEA1083AT Datasheet(PDF) 2 Page - NXP Semiconductors |
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TEA1083AT Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 20 page  March 1994 2 Philips Semiconductors Product specification Call progress monitor for line powered telephone sets TEA1083; 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 only) • Loudspeaker enable input. 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. 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 power amplifier 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. QUICK REFERENCE DATA ORDERING INFORMATION Notes 1. SOT97-1; 1998 Jun 18. 2. SOT38-1; 1998 Jun 18. 3. SOT162-1; 1998 Jun 18. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT ISUP input current range 3.0 − 120 mA VBB stabilized supply current − 2.95 − V ISUP current consumption PD = HIGH; TEA1083A only − 50 −µA Gv voltage gain of loudspeaker amplifier − 35 − dB ISUP minimum input current PO = 10 mW (typ) into 50 Ω− 10 − mA Tamb operating ambient temperature range −25 −+75 °C EXTENDED TYPE NUMBER PACKAGE PINS PIN POSITION MATERIAL CODE TEA1083 8 DIL PLASTIC SOT97D(1) TEA1083A 16 DIL PLASTIC SOT38(2) TEA1083AT 16 SOL PLASTIC SOT162AG(3) |
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