UTC UTCTEA1062A, UTCTEA1062 Datasheet
UTC TEA1062/1062A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R108-001,A
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 (64kΩ)for
dynamic, magnetic or piezoelectric microphones.
*Asymmetrical high-impedance inputs (32kΩ)for
electret microphones.
*DTMF signal input with confidence tone.
DIP-16
SOP-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 VLN typ. 3.8 V
Line current operating range[pin1]
normal operation
with reduced performance
Iline
Iline
11 to 140 mA
1 to 11 mA
Internal supply current ICC typ. 1mA
Supply current for peripherials
at Iline=15 mA MUTE input LOW(1062 is HIGH)
VCC>2.2V
VCC>2.8V
Ip
Ip
typ. 1.8mA
typ. 0.7mA
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
AVD
Vexch
Rexch
typ. 6 dB
36 to 60V
400 to 1000¦¸
Operating ambient temperature range Tamb -25 to +75°C
UTC TEA1062/1062A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R108-001,A
dB
SUPPLY AND
REFERENCE
CONTROL
CURRENT
CURRENT
REFERENCE
LOW
VOLTAGE
CIRCUIT
2
3
16815149
12
11
6
7
10
13 1
5
4
REG AGCV
EE
MUTE
DTMF
MIC-
MIC+
IR
V
CC
LN
GAR
QR
GAS1
GAS2
SLPESTAB
Fig.1 Block Diagram
1 LN positive line terminal
2 GAS1 gain adjustment; transmitting amplifier
3 GAS2 gain adjustment; transmitting amplifier
4 QR non-inverting output,receiving amplifier
5 GAR gain adjustment; receiving amplifier
6 MIC- inverting microphone input
7 MIC+ on-inverting microphone input
8 STAB current stabilizer
9 VEE negative line terminal
10 IR receiving amplifier input
11 DTMF dual-tone multi-frequency input
12 MUTE mute input
13 Vcc positive supply decoupling
14 REG voltage regulator decoupling
15 AGC automatic gain control input
16 SLPE slope (DC resistance) adjustment
Fig.2 PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LN
GAS1
GAS2
QR
GAR
MIC-
MIC+
STAB VEE
IR
DTMF
MUTE
VCC
REG
AGC
SLPE
UTC TEA1062/1062A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R108-001,A
ABSOLUTE MAXIMUM RATINGS
PARAMETER TEST CONDITIONS SYMBOL MIN MAX UNIT
Positive Continuous Line Voltage VLN 12 V
Repetitive Line Voltage During
Switch-On Or Line Interruption VLN 13.2 V
Repetitive Peak Line Voltage for a 1 ms Pulse/5s R10=13Ω
R9=20Ω
(see Fig.15) VLN 28 V
Line Current (1) R9=20Ω Iline 140 mA
Voltage on All Other Pins Vi VCC+0.7 V
-Vi 0.7 V
Total Power Dissipation(2) R9=20Ω Ptot 640 mW
Storage Temperature Range Tstg -40 +125 °C
Operating Ambient Temperature Range Tamb -25 +75 °C
Junction Temperature Tj +125 °C
1. Mostly dependent on the maximum required Tamb and the voltage between LN and SLPE (see Figs 6 ).
2. Calculated for the maximum ambient temperature specified Tamb=75°C and a maximum junction temperature of
125°C.
THERMAL RESISTANCE
From junction to ambient in free air Rth j-a = 75K/W
ELECTRICAL CHARACTERISTICS(Iline=11 to 140mA;VEE=0V;f=800Hz;Tamb=25°C; unless otherwise
specified)
PARAMETER TEST CONDITIONS SYMBOL MIN TYP MAX UNIT
Supply; LN and VCC(pins 1 and 13)
Voltage Drop Over Circuit,
between LN and VEE MIC inputs open
Iline=1mA VLN 1.6 V
Iline=4mA VLN 1.9 V
Iline=15mA VLN 3.55 4.0 4.25 V
Iline=100mA VLN 4.9 5.7 6.5 V
Iline=140mA VLN 7.5 V
Variation with Temperature Iline=15mA ∆VLN/∆T -0.3
mV/K
Voltage Drop Over Circuit,
between LN and VEE with
External Resistor RVA
Iline=15mA
RVA(LN to REG)
=68kΩ
3.5 V
Iline=15mA
RVA(REG to SLPE)
=39kΩ
4.5
V
Supply Current VCC=2.8V ICC 0.9 1.35 mA
Supply Voltage Available for
Peripheral Circuitry Iline=15mA
TEA1062 Ip=1.2mA;MUTE=HIGH VCC 2.2 2.7 V
lp=0mA;MUTE=HIGH VCC 3.4 V
TEA1062A Ip=1.2mA;MUTE=LOW VCC 2.2 2.7 V
lp=0mA;MUTE=LOW VCC 3.4 V
UTC TEA1062/1062A LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R108-001,A
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER TEST CONDITIONS SYMBOL MIN TYP MAX UNIT
Microphone inputs MIC+ and MIC- (pins 6 and 7)
Input impedance (differential)
between MIC- and MIC+
£üZi£ü
64 kΩ
Input impedance (sigle-ended)
MIC- or MIC+ to VEE
£üZi£ü
32 kΩ
Common Mode Rejection Ratio kCMR 82 dB
Voltage Gain
MIC+ or MIC- to LN Iline=15mA
R7=68kΩ Gv 50.5 52.0 53.5 dB
Gain Variation with Frequency
at f=300Hz and f=3400Hz w.r.t.800Hz ∆Gvf +-0.2 dB
Gain Variation with Temperature
at -25°C and +75°C w.r.t.25°C
without R6;
Iline=50mA ∆GvT +-0.2 dB
Dual-tone multi-frequency input DTMF (pin 11)
Input impedance
£üZi£ü
20.7 kΩ
Voltage Gain from DTMF to LN Iline=15mA
R7=68kΩ Gv 24 25.5 27 dB
Gain Variation with Frequency
at f=300Hz and f=3400Hz w.r.t.800Hz ∆Gvf +-0.2 dB
Gain Variation with Temperature
at -25°C and +75°C w.r.t.25°C
Iline=50mA ∆GvT +-0.2 dB
Gain Adjustment GAS1 and GAS2 (pins 2 and 3)
Gain Variation of the Transmitting
Amplifier by Varying R7 between
GAS1 and GAS2 ∆Gv -8 0 dB
Sending Amplifier Output LN(pin 1)
Output Voltage Iline=15mA
THD=10% VLN(rms) 1.7 2.3 V
Iline=4mA
THD=10% VLN(rms) 0.8 V
Noise output voltage Iline=15mA;
R7=68kΩ;
200Ω between
MIC- and MIC+;
psophometrically
weighted VNO(rms) -69 dBmp
Receiving Amplifier Input IR (pin 10)
Input impedance
£üZi£ü
21 kΩ
Receiving Amplifier Output QR (pin 4)
Output Impedance
£üZo£ü
4 Ω
Voltage gain from IR to QR Iline=15mA;
RL(from pin 9 to
pin 4 )=300Ω Gv 29.5 31 32.5 dB
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