TEA1069H
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 compensation (line-current dependent) for microphone and earpiece amplifiers
- Gain-control curve adaptable to the exchange supply. Dialler part
