The TEA1118 and TEA1118A are bipolar integrated circuits that perform all speech and line interface functions required in cordless telephone base stations.
This datasheet describes the TEA1118 and TEA1118A, which are bipolar integrated circuits performing speech and line interface functions for cordless telephone base stations. The devices operate at line voltages down to 1.6 V DC and include features such as a voltage regulator, symmetrical high-impedance transmit inputs, and a receive amplifier for dynamic, magnetic, or piezoelectric earpieces.
| Line current operating range | 11 - 140 mA |
|---|---|
| DC line voltage | 3.35 V to 3.95 V |
| Supply voltage for peripherals | 2.9 V |
| Transmit amplifier gain (TEA1118A) | 11.3 dB |
| Receive amplifier gain | 19 to 31 dB |
| Transmit input impedance | 62.5 kΩ |
| Package types | SSOP16, SO14 |
These integrated circuits are used in cordless telephone base stations, fax machines, and answering machines.
The ICs operate at a line voltage down to 1.6 V DC, though with reduced performance.
The typical voltage gain for the transmit amplifier in the TEA1118A is 11.3 dB.