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TEA1098TV データシート(PDF) 2 Page - NXP Semiconductors |
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TEA1098TV データシート(HTML) 2 Page - NXP Semiconductors |
2 / 40 page 1999 Oct 14 2 Philips Semiconductors Product specification Speech and handsfree IC TEA1098 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 compensation. 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 • 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 (HF) microphone and loudspeaker amplifiers and a duplex controller with signal and noise monitors on both channels. This IC provides a 3.35 V supply for a microcontroller or dialler and a 2.0 V filtered voltage supply for an electret microphone. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TEA1098TV VSO40 plastic very small outline package; 40 leads SOT158-1 TEA1098H QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm SOT307-2 TEA1098UH − bare die; on foil − |
同様の部品番号 - TEA1098TV |
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同様の説明 - TEA1098TV |
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