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TEA1068

Features: · Voltage regulator with adjustable static resistance· Provides supply for external circuitry· Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones· Asymmetrical high-impedance input (32 kW) for electret microphone· Dual-Tone Multi-Frequency (DTMF)...

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SeekIC No. : 004517231 Detail

TEA1068: Features: · Voltage regulator with adjustable static resistance· Provides supply for external circuitry· Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones·...

TEA1068 Data Sheet

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Part Number:
TEA1068
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:

· Voltage regulator with adjustable static resistance
· Provides supply for external circuitry
· Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones
· Asymmetrical high-impedance input (32 kW) for electret microphone
· Dual-Tone Multi-Frequency (DTMF) signal input with confidence tone
· Mute input for pulse or DTMF dialling
· Power down input for pulse dial or register recall
· Receiving amplifier for magnetic, dynamic or piezoelectric earpieces
· Large gain setting range on microphone and earpiece amplifiers
· Line current-dependent line loss compensation facility for microphone and earpiece amplifiers
· Gain control adaptable to exchange supply
· DC line voltage adjustment facility.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VLN positive line voltage continuous   - 12 V
VLN(R) repetitive line voltage during
switch-on line interruption		   - 13.2 V
VLN(RM) repetitive peak line voltage one 1 ms
pulse per 5 s		 R9 = 20 W;
R10 = 13 W; (Fig.15)		 - 28 V
Iline line current R9 = 20 W; note 1 - 140
 mA
Vn voltage on any other pin   VEE1-0.7 VCC+0.7 V
Ptot total power dissipation
TEA1068
TEA1068T		 R9 = 20 W; note 2 -
-		 769
555		 mW
mW
Tstg IC storage temperature   -40 +125  
Tamb operating ambient temperature   -25 +75 °C
Tj junction temperature   - +125 °C
Notes
1. Mostly dependent on the maximum required Tamb and on the voltage between LN and SLPE. See Figs 7 and 8 to determine the current as a function of the required voltage and the temperature.
2. Calculated for the maximum ambient temperature specified Tamb = 75 °C and a maximum junction temperature of 125 °C.


Description

The TEA1068 is a bipolar integrated circuit performing all speech and line interface functions required in fully electronic telephone sets. It performs electronic switching between dialling and speech.




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