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Hangzhou Silan Microelectronics - Low Voltage Telephone Transmission Circuit

Numéro de référence UTC1062
Description Low Voltage Telephone Transmission Circuit
Fabricant Hangzhou Silan Microelectronics 
Logo Hangzhou Silan Microelectronics 





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UTC1062 fiche technique
UTC1062
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE TELEPHONE
TRANSMISSION CIRCUIT
WITH DIALLER INTERFACE
DESCRIPTION
The UTC1062 is a bipolar integrated circuit per-
forming 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.
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 (64kfor
dynamic, magnetic or piezoelectric microphones
* Asymmetrical high-impedance inputs (32kfor
electric microphones
* DTMF signal input with confidence tone
* Mute input for pulse or DTMF dialing
DIP-16
* Receiving amplifier for several types of earphones
* Large amplification setting range on microphone
and ear piece amplifiers
* Line loss compensation facility , line current
dependent (microphone and ear piece amplifiers)
* Gain control adaptable to exchange supply
* Possibility to adjust the d.c. line voltage
QUICK REFERENCE DATA
Line voltage at Iline=15mA
VLN
Line current operating range[pin1]
normal operation
with reduced performance
Iline
Iline
Internal supply current
ICC
Supply current for peripherals
at Iline=15 mA mute input HIGH
Vcc>2.2V
Vcc>2.8V
Voltage amplification range
w microphone amplifier
w receiving amplifier
Line loss compensation
w Amplification control range
Exchange supply voltage range
. Exchange feeding bridge resistance range
DataShYeOUeWtA4NUG .EcLoECmTRONICS CO.LTDOperating ambient temperature range
Ip
Ip
AVD
AVD
AVD
Vexch
Rexch
Tamb
typ. 3.8 V
11 to 140 mA
1 to 11 mA
typ. 1mA
typ. 1.8mA
typ. 0.7mA
44 to 52 dB
20 to 39 dB
Typ.
6 dB
36 to 60V
400 to 1000
-25 to +75°C
1

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