UBA1707

INTEGRATED CIRCUITS DATA SHEET UBA1707 Cordless telephone, answering machine line interface Product specification Supersedes data of 1998 Jun 11 File under Integrated Circuits, IC03 1999 Feb 17 Philips Semiconductors Product specification Cordless telephone, answering machine line interface FEATURES Line interface Low DC line voltage; operates down to 1.2 V (excluding polarity guard) Voltage regulator with adjustable DC voltage DC mask for voltage or current regulation (CTR 21) Line current limitation for protection Electronic hook switch control input Transmit amplifier with: – Symmetrical inputs – Fixed gain – Large signals handling capability. Receive amplifier with fixed gain Transmit and receive amplifiers AGC for line loss compensation. Auxiliary amplifier Fixed gain. Loudspeaker channel Dual inputs Rail-to-rail output stage for single-ended load drive High output current capability Dynamic limiter to prevent distortion Digital volume control Fixed maximum gain. General purpose switches Three switches with open-collector. 3-wires serial bus interface Allows to control: DC mask (voltage or current regulation) Receive amplifier mute function ORDERING INFORMATION TYPE NUMBER UBA1707T UBA1707TS PACKAGE NAME SO28 SSOP28 DESCRIPTION plastic small outline package; 28 leads; body width 7.5 mm plastic shrink small outline package; 28 leads; body width 5.3 mm AGC: – On/off – Slope – Istart line current. Auxiliary amplifier mute function ...