TEA1068
Key Features
- Voltage regulator with adjustable static resistance
- Provides supply for external circuitry
- Symmetrical high-impedance inputs (64 kΩ) for dynamic, magnetic or piezoelectric microphones
- Asymmetrical high-impedance input (32 kΩ) for electret microphone
- Dual-Tone Multi-Frequency (DTMF) signal input with confidence tone
- Mute input for pulse or DTMF dialling
- Power down input for pulse dial or register recall
- Large gain setting range on microphone and earpiece amplifiers
- Line current-dependent line loss pensation facility for microphone and earpiece amplifiers
- Gain control adaptable to exchange supply
