TEA1062 - Low voltage transmission circuits

TEA1062A - Low voltage transmission circuits

FEATURES
• Low DC line voltage; operates down to 1.6 V (excluding
polarity guard)
• Voltage regulator with adjustable static resistance
• Provides a supply for external circuits
• Symmetrical high-impedance inputs (64 k?) for
dynamic, magnetic or piezoelectric microphones
• Asymmetrical high-impedance input (32 k?) for electret
microphones
• DTMF signal input with confidence tone
• Mute input for pulse or DTMF dialling
– TEA1062: active HIGH (MUTE)
– TEA1062A: active LOW (MUTE)
• Receiving amplifier for dynamic, magnetic or
piezoelectric earpieces
• Large gain setting ranges on microphone and earpiece
amplifiers
• Line loss compensation (line current dependent) for
microphone and earpiece amplifiers
• Gain control curve adaptable to exchange supply
• DC line voltage adjustment facility