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TEA1098

Features: Line interface Low DC line voltage Voltage regulator with adjustable DC voltage Symmetrical high impedance inputs (70 k) for dynamic, magnetic or electret microphones DTMF input with confidence tone on earphone and/or loudspeaker Earphone amplifier for dynamic, magnetic or piezo-electric...

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SeekIC No. : 004517246 Detail

TEA1098: Features: Line interface Low DC line voltage Voltage regulator with adjustable DC voltage Symmetrical high impedance inputs (70 k) for dynamic, magnetic or electret microphones DTMF input with confi...

TEA1098 Data Sheet

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Part Number:
TEA1098
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Line interface
Low DC line voltage
Voltage regulator with adjustable DC voltage
Symmetrical high impedance inputs (70 k) for dynamic, magnetic or electret microphones
DTMF input with confidence tone on earphone and/or loudspeaker
Earphone 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 microcontroller or dialler
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
Digital volume control on loudspeaker amplifier (8 steps)
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).


Application

Line powered telephone sets.


Pinout

Connection Diagram Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VLN positive continuous line voltage   - 0.4 +12 V
repetitive line voltage during switch-on or line interruption   - 0.4 +13.2 V
Vn(max) maximum voltage on pins REG, SLPE, IR and AGC   -0.4 VLN + 0.4 V
maximum voltage on all other pins except VDD   -0.4 VBB + 0.4 V
Iline maximum line current
  - 130

mA

Ptot


 total power dissipation
TEA1098TV (see Fig.15)
TEA1098H (see Fig.16)
TEA1098UH; note 1		 Tamb = 75 °C;
-
-
-
400
720
-
mW
mW
Tstg IC storage temperature   -40 +125 °C
Tamb operating ambient temperature   -25 +75 °C
Tj junction temperature   - 125 °C





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.




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