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Número de pieza UTCTEA1062
Descripción LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE
Fabricantes Unisonic Technologies 
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UTCTEA1062/1062A LINEARINTEGRATEDCIRCUIT
LOW VOLTAGE TELEPHONE
TRANSMISSION CIRCUIT WITH
DIALLER INTERFACE
DESCRIPTION
The UTC TEA1062/1062A is a bipolar integrated
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.
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 (64k)for
dynamic, magnetic or piezoelectric microphones.
*Asymmetrical high-impedance inputs (32k)for
electret microphones.
*DTMF signal input with confidence tone.
SOP-16
DIP-16
*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.
QUICK REFERENCE DATA
Line voltage at Iline=15mA
Line current operating range[pin1]
normal operation
with reduced performance
Internal supply current
Supply current for peripherials
at Iline=15 mA MUTE input LOW(1062 is HIGH)
VCC>2.2V
VCC>2.8V
Voltage amplification range
microphone amplifier
receiving amplififer
Line loss compansation
Amplification control range
Exchange supply voltage range
Exchange feeding bridge resistance range
Operating ambient temperature range
VLN
Iline
Iline
ICC
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
¸
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R108-001,A

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UTCTEA1062 pdf
UTCTEA1062/1062A LINEARINTEGRATEDCIRCUIT
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER
TEST CONDITIONS
Gain Variation with Frequency
at f=300Hz and f=3400Hz
w.r.t.800Hz
Gain Variation with Temperature
at-25°C and +75°C
w.r.t.25°C
without R6
Iline=50mA
Output Voltage
sinwave drive;
Ip=0mA;THD=2%
R4=100k
Iline=15mA
RL=150
RL=450
Output Voltage
THD=10%
R4=100k
RL=150
Iline=4mA
Noise Output Voltage
Iline=15mA
R4=100k
IR open-circuit
psophometrically
weighted
RL=300
Gain adjustment GAR (pin 5)
Gain Variation of Receiving
Amplifier Achievable by
Varying
R4 between GAR and QR
Mute Input (pin 12)
Input Voltage(HIGH)
Input Voltage(LOW)
Input Current
Reduction of Gain
MIC+ or MIC- to QR
MUTE=LOW
Voltage Gain from DTMF to QR
MUTE=LOW
R4=100k
RL=300
Automatic Gain Control Input AGC ( pin 15)
Controlling the Gain from lR to QR
and the Gain from MIC+/MIC-
to LN;R6 between AGC and VEE R6=110k
Gain Control Range
Iline=70mA
Highest Line Current
for Maximum Gain
Minimum Line Current
for Minimum Gain
SYMBOL MIN TYP MAX UNIT
Gvf
¡ À0.2
dB
GvT
+-0.2
dB
VO(rms)
VO(rms)
0.22
0.3
0.33
0.48
VO(rms)
15
V
V
mV
VNO(rms) 50 ¦ ÌV
Gv -11
0 dB
VIH 1.5
VCC
V
VIL 0.3 V
IMUTE
8 15 ¦ ÌA
Gv 70 dB
Gv -19 dB
Gv -5.8 dB
Iline 23 mA
Iline 61 mA
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R108-001,A

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UTCTEA1062 arduino
UTCTEA1062/1062A LINEARINTEGRATEDCIRCUIT
QR 4
QR 4 (1)
QR 4 (2)
VEE 9
VEE 9
VEE 9
(a) (b)
(c)
Fig.11 Alternative receiver arrangement
(a) Dynamic earpiece.
(b) Magnetic earpiece.The resistor marked(1) may be connected to prvent distortion(inductive load)
(c) Piezoelectric earpiece.The earpiece marked(2) is requirred to increase the phase margin (capacitive load)
Fig.12 Variation of gain with line urrent,with R6 as a parameter.
¡÷Gv
(dB)
0
R6=¡Þ
-2
R9=20
-4 (1) (2) (3)
-6
(1) R6= 78.7k
(2) R6= 110k
(3) R6= 140k
0 20 40 60 80 100 120 140
Iline (mA)
Rexch()
400 600 800 1000
R6(k)
36
100
78.7
¡Á
¡Á
Vexch(V)
48
140 110 93.1
82
60
¡Á
¡Á
120
102
Table 1 Values of resistor R6 for optimum line loss compensation,for various usual values of exchange
supply vloltage(Vexch) and exchange feeding bridge resistance(Rexch);R9=20.
UTC UNISONIC TECHNOLOGIES CO., LTD. 11
QW-R108-001,A

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