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TEA1067

Features: · Low DC line voltage; operates down to 1.6 V (excluding polarity guard)· Voltage regulator with adjustable static resistance· Provides supply with limited current for external circuitry· Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones· Asymme...

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SeekIC No. : 004517230 Detail

TEA1067: Features: · Low DC line voltage; operates down to 1.6 V (excluding polarity guard)· Voltage regulator with adjustable static resistance· Provides supply with limited current for external circuitry· ...

TEA1067 Data Sheet

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Part Number:
TEA1067
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Features:

· Low DC line voltage; operates down to 1.6 V (excluding polarity guard)
· Voltage regulator with adjustable static resistance
· Provides supply with limited current for external circuitry
· Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones
· Asymmetrical high-impedance input (32 kW) for electret microphone
· 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 capability


Pinout

Connection Diagram


Specifications

PARAMETER
CONDITIONS
SYMBOL
MIN.
MAX.
UNIT
Positive continuous line voltage
Repetitive line voltage during
switch-on line interruption
Repetitive peak line voltage for a
1 ms pulse per 5 s
Line current TEA1067 (note 1)
Line current TEA1067T (note 1)
Voltage on all other pins
Total power dissipation (note 2)
TEA1067
TEA1067T
Storage temperature range
Operating ambient temperature range
Junction temperature
R9=20Ω
R10=13Ω
(see Fig.16)
R9=20Ω
R9=20Ω


R9=20Ω
VLN
VLN
VLN
Iline
Iline
Vi
-Vi
Ptot
Ptot
Tstg
Tamb
Tj
-
-
-
-
-
-
-
-
-
-40
-25
-
12
13.2
28
140
140
VCC + 0.7
0.7
769
550
+ 125
+ 75
+ 125
V
V
V
mA
mA
V
V
mW
mW
°C
°C
°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 TEA1067 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. The circuit is able to operate down to a DC line voltage of 1.6 V (with reduced performance) to facilitate the use of more telephone sets in parallel.




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