TEA1066T

INTEGRATED CIRCUITS DATA SHEET TEA1066T Versatile telephone transmission circuit with dialler interface Product specification Supersedes data of September 1990 File under Integrated Circuits, IC03 1996 Apr 04 Philips Semiconductors Product specification Versatile telephone transmission circuit with dialler interface FEATURES Voltage regulator with adjustable static resistance Provides supply for external circuitry Symmetrical low-impedance inputs for dynamic and magnetic microphones Symmetrical high-impedance inputs for piezoelectric microphone Asymmetrical high-impedance input 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 QUICK REFERENCE DATA SYMBOL VLN Iline ICC VCC line voltage line current internal supply current supply voltage for peripherals PARAMETER CONDITIONS Iline = 15 mA normal operation power down input LOW power down input HIGH Iline = 15 mA; MUTE input HIGH; Ip = 1.2 mA Iline = 15 mA; MUTE input HIGH; Ip = 1.7 mA Gv voltage gain range for microphone amplifier low impedance inputs (pins 7 and 9) high impedance inputs (pins 8 and 10) receiving amplifier Tamb ∆Gv Vexch Rexch operating ambient temperature Line loss compensation gain control exchange supply voltage exchange feeding bridge resistance 5.5 24 400 5.9 − − 44 30 17 −25 − − − − MIN. 4.25 10 − − 2.8 2.5 TEA1066T Receiving amplifier for magnetic, dynamic ...