UTC TEA1062/1062A LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE TELEPHONE
TRANSMISSION CIRCUIT WITH
DIALLER INTERFACE
DESCRIPTION
The UTC TEA1062/1062A is a bipolar integrated
SOP-16
circuit performing all speech and line interface
function, required in the
fully
electronic
telephone sets. It performs electronic switching
between dialing speech. The circuit is able to
operate down to D.C. line voltage of 1.6V (with
reduced performance) to facilitate the use of more
telephone sets in parallel.
DIP-16
FEATURES
* Low d.c. line voltage; operates down to 1.6V
(excluding polarity guard).
*Voltage regulator with adjustment static resistance.
*Provides supply with limited current for external
circuitry.
*Symmetrical high-impedance inputs (64kW)for
dynamic, magnetic or piezoelectric microphones.
*Asymmetrical high-impedance inputs (32kW)for
electret microphones.
*Mute input for pulse or DTMF dialing.
*Receivering amplifier for several types of earphones.
*Large amplification setting range on microphone
and earpiece amplifiers.
*Line loss compensation facility , line current
depedant (microphone and earpiece amplifiers).
*Gain control adaptable to exchange supply.
*Possibility to adjust the d.c. line voltage.
*DTMF signal input with confidence tone.
QUICK REFERENCE DATA
Line voltage at Iline=15mA
Line current operating range[pin1]
normal operation
with reduced performance
Internal supply current
VLN
typ. 3.8 V
Iline
Iline
ICC
11 to 140 mA
1 to 11 mA
typ. 1mA
Supply current for peripherials
at Iline=15 mA MUTE input LOW(1062 is HIGH)
VCC>2.2V
Ip
Ip
typ. 1.8mA
typ. 0.7mA
VCC>2.8V
Voltage amplification range
microphone amplifier
receiving amplififer
AVD
AVD
44 to 52 dB
20 to 39 dB
Line loss compansation
Amplification control range
Exchange supply voltage range
Exchange feeding bridge resistance range
Operating ambient temperature range
AVD
typ. 6 dB
36 to 60V
400 to 1000¦
-25 to +75°C
Vexch
Rexch
Tamb
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UTC UNISONIC TECHNOLOGIES CO., LTD.
QW-R108-001,A