TEA1098H Datasheet | NXP Semiconductors

INTEGRATED CIRCUITS DATA SHEET TEA1098 Speech and handsfree IC Product specification Supersedes data of 1999 May 20 File under Integrated Circuits, IC03 1999 Oct 14 Philips Semiconductors Product specification Speech and handsfree IC Features Line interface - Low DC line voltage - Voltage regulator with adjustable DC voltage - Symmetrical high impedance inputs (70 kΩ) for dynamic, magnetic or electret microphones - DTMF input with confidence tone on earphone and/or loudspeaker - Receive amplifier for dynamic, magnetic or piezo-electric earpieces (with externally adjustable gain) - Automatic Gain Control (AGC) for true line loss pensation. Supplies - Provides a strong 3.35 V regulated supply for microcontrollers or diallers - Provides filtered power supply, optimized according to line current - Filtered 2.0 V power supply output for electret microphone - PD logic input for power-down. Handsfree - Asymmetrical high input impedance for electret microphone - Loudspeaker amplifier with single-ended rail-to-rail output and externally adjustable gain ORDERING INFORMATION TYPE NUMBER TEA1098TV TEA1098H TEA1098UH PACKAGE NAME VSO40 QFP44 - DESCRIPTION plastic very small outline package; 40 leads plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm bare die; on foil TEA1098 - Dynamic limiter on loudspeaker amplifier to prevent distortion - Logarithmic volume control on loudspeaker amplifier via linear potentiometer - Duplex controller consisting of: - Signal and noise envelope monitors for both channels (with adjustable sensitivities and timing) - Decision logic (with adjustable switch-over and Idle mode timing) - Voice switch control (with adjustable switching range and constant sum of gain during switching). APPLICATIONS - Line powered telephone sets. GENERAL DESCRIPTION The TEA1098 is an analog bipolar circuit dedicated to telephony applications. It includes a line interface, handset (HS) microphone and earpiece amplifiers, handsfree...