TEA1064B

INTEGRATED CIRCUITS DATA SHEET TEA1064B Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting Product specification File under Integrated Circuits, IC03A March 1994 Philips Semiconductors Product specification Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting FEATURES Low DC line voltage; operates down to 1.8 V (excluding polarity guard) Voltage regulator with low voltage drop and adjustable static resistance DC line voltage adjustment facility Provides a supply for external circuits Dynamic limiting (speech-controlled) in transmit direction prevents distortion of line signal and sidetone Symmetrical high-impedance inputs (64 kΩ) for dynamic, magnetic or piezo-electric microphones Asymmetrical high-impedance input (32 kΩ) for electret microphones DTMF signal input Confidence tone in the earpiece during DTMF dialling Mute input for disabling speech during pulse or DTMF dialling Power-down input for improved performance during pulse dial or register recall (flash) Receiving amplifier for dynamic, magnetic or piezo-electric earpieces ORDERING INFORMATION EXTENDED TYPE NUMBER TEA1064B TEA1064BT Notes 1. SOT146-1; 1998 Jun 18. 2. SOT163-1; 1998 Jun 18. PACKAGE PINS 20 20 PIN POSITION DIL mini-pack MATERIAL plastic plastic TEA1064B Large amplification setting ranges on microphone and earpiece amplifiers Line loss compensation (line...