TEA1066T is a bipolar integrated circuit produced by Philips Semiconductors. It can be used for electronic telephone sets to realize all the functions of speech and line interface.
The TEA1066T is a bipolar integrated circuit designed to perform all speech and line interface functions required in fully electronic telephone sets. It handles electronic switching between dialling and speech operations.
| Line voltage | 4.25 - 4.65 V |
|---|---|
| Line current | 10 - 140 mA |
| Internal supply current (power down LOW) | 0.96 - 1.3 mA |
| Supply voltage for peripherals | 2.8 - 3.05 V |
| Microphone amplifier gain (low impedance) | 44 - 60 dB |
| Microphone amplifier gain (high impedance) | 30 - 46 dB |
| Receiving amplifier gain | 17 - 39 dB |
| Operating ambient temperature | -25 - +75 °C |
| Exchange supply voltage | 24 - 60 V |
| Exchange feeding bridge resistance | 400 - 1000 Ω |
| Package type | SOT163-1 |
It supports symmetrical low-impedance inputs for dynamic and magnetic microphones, symmetrical high-impedance inputs for piezoelectric microphones, and an asymmetrical high-impedance input for electret microphones.
A HIGH level at MUTE enables the DTMF input and inhibits the microphone inputs and the receiving amplifier.
Yes, it can be adjusted by means of an external resistor Rya connected between LN and REG to decrease it, or between REG and SLPE to increase it.