This data sheet introduces the functions and features of TEA1062 and TEA1062A, including low DC line voltage, adjustable static resistance, external circuit supply, symmetrical high impedance input, DTMF signal input, mute input, dynamic, magnetic or piezoelectric earpiece receiving amplifier, large gain setting range on microphone and earpiece amplifiers, line loss compensation, gain control curve adaptable to exchange supply, DC line voltage adjustment device.
This document is a product specification datasheet for the Philips TEA1062 and TEA1062A integrated circuits. These ICs are designed to perform all speech and line interface functions required in fully electronic telephone sets, operating at low DC line voltages down to 1.6 V.
| Line voltage (normal operation) | 1.6 V to 4.25 V |
|---|---|
| Operating ambient temperature | -25 - +75 °C |
| Microphone amplifier gain range | 44 - 52 dB |
| Receiving amplifier gain range | 20 - 31 dB |
| Exchange supply voltage | 36 - 60 V |
The TEA1062 and TEA1062A are available in DIP16 plastic dual in-line packages or SOT109-1 small outline packages.
The gain of the microphone amplifier can be adjusted between 44 dB and 52 dB by changing the value of resistor R7 connected between GAS1 and GAS2.