TEA1067T
Description
The TEA1067 is a bipolar integrated circuit performing all speech and line interface functions required in fully electronic telephone sets.
Key Features
- Low DC line voltage; operates down to 1.6 V (excluding polarity guard)
- Voltage regulator with adjustable static resistance
- Provides supply with limited current for external circuitry
- Asymmetrical high-impedance input (32 kΩ) for electret microphone
- DTMF signal input with confidence tone
- Mute input for pulse or DTMF dialling
- Power down input for pulse dial or register recall
- Receiving amplifier for magnetic, dynamic or piezoelectric earpieces
- Large gain setting range on microphone and earpiece amplifiers
- Line current dependent line loss pensation facility for microphone and earpiece amplifiers
