TEA1095T

INTEGRATED CIRCUITS DATA SHEET TEA1095 Voice switched speakerphone IC Product specification Supersedes data of 1996 Mar 22 File under Integrated Circuits, IC03 1997 Nov 25 Philips Semiconductors Product specification Voice switched speakerphone IC FEATURES External power supply with power-down function Transmit channel with: – externally adjustable gain – transmit mute function Receive channel with: – externally adjustable gain – logarithmic volume control via a linear potentiometer – receive mute function Duplex controller consisting of: – signal envelope and noise envelope monitors for both channels with: externally adjustable sensitivity externally adjustable signal envelope time constant externally adjustable noise envelope time constant – decision logic with: externally adjustable switch-over timing externally adjustable idle mode timing externally adjustable dial tone detector in receive channel – voice switch control with: adjustable switching range constant sum of gain during switching constant sum of gain at different volume settings. ORDERING INFORMATION TYPE NUMBER TEA1095 TEA1095T TEA1095TS PACKAGE NAME DIP24 SO24 SSOP24 DESCRIPTION plastic dual in-line package; 24 leads (600 mil) plastic small outline package; 24 leads; body width 7.5 mm plastic shrink small outline package; 24 leads; body width 5.3 mm GENERAL DESCRIPTION APPLICATIONS TEA1095 Mains, battery or line-powered telephone sets Cordless telephones Answering machines Fax machines H...