TEA1069N Overview
The TEA1069 and TEA1069A contain all the functions needed to build a highly featured, high-performance fully electronic telephone set. The device incorporates a speech/transmission part, a dialler part and a ringer part. By offering a wide range of possible adaptations for each part, the TEA1069 and TEA1069A application can be easily adapted to meet different requirements.
TEA1069N Key Features
- Voltage regulator with adjustable static resistance
- Low DC line voltage; operates down to 1.6 V (excluding polarity guard)
- Supply for dialler part and peripherals (not stabilized)
- Symmetrical high-impedance inputs (64 kΩ) for dynamic, magnetic, or piezoelectric microphones
- Asymmetrical high-impedance input (32 kΩ) for electret microphones
- Asymmetrical earpiece output for dynamic, magnetic, or piezoelectric earpieces
- Internal mute to disable speech during dialling
- Confidence tone during DTMF dialling
- Line-loss pensation (line-current dependent) for microphone and earpiece amplifiers
- Gain-control curve adaptable to the exchange supply. Dialler part