Call progress monitor for line
powered telephone sets
Product specification
File under Integrated circuits, IC03A
March 1994
Page 2
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
FEATURES
• Internal supply
– Optimum current split-up
– Low constant current (adjustable) in transmission IC
– Nearly all line current available for monitoring
– Stabilized supply voltage
• Loudspeaker amplifier with a fixed gain of 35 dB
• Volume controlled by potentiometer
• Power-down input (TEA1083A only)
• Loudspeaker enable input.
GENERAL DESCRIPTION
The TEA1083/83A is a bipolar IC which has been
designed for use in line powered telephone sets. It is
intended to offer a monitoring facility of the line signal via
TEA1083; TEA1083A
a loudspeaker during on-hook dialling. The TEA1083/83A
is intended for use in conjunction with a transmission
circuit of the TEA1060 family. The device uses a part of the
available line current via the internal supply circuit.
The loudspeaker amplifier, which consists of a preamplifier
and a power amplifier, amplifies the received line signals
from the transmission circuit when enabled via the LSE
input. The loudspeaker amplifier can also be used to
amplify dialling tones from the dialler IC. The power
amplifier contains a push-pull output stage to drive the
loudspeaker in a Single Ended Load (SEL) configuration.
The internal voltage stabilizer can be used to supply
external devices. By activating the power-down (PD) input
of the TEA1083A, the current consumption of the circuit
will be reduced, this enables pulse dialling or flash (register
recall).
An internal start circuit ensures normal start-up of the
transmission IC.
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
I
SUP
V
BB
I
SUP
G
v
I
SUP
T
amb
input current range3.0−120mA
stabilized supply current−2.95−V
current consumptionPD = HIGH; TEA1083A only−50−µA
voltage gain of loudspeaker amplifier−35−dB
minimum input currentPO = 10 mW (typ) into 50 Ω−10−mA
operating ambient temperature range−25−+75°C
Application areanote 1call progress monitoringlistening-in
PD facility−XX
MUTE or LSE facilitynote 2XXX
Dynamic limiter−−X
Howling limiter−−X
V
setting−−X
BB
SELnote 3XXX
BTLnote 3−−X
Number of pinsnote 481624
Notes
1. A call progress monitor is recommended by the
European Telecommunications Standards Institute
(ETSI) for telephone sets with automatic on-hook
dialling facilities so that audible, or visual, progress of
a call attempt can be monitored. In accordance with
the ETSI (at a frequency of 440 Hz and a line level of
20 dBm (600 Ω)), a minimum level of 50 dBA shall be
guaranteed at a distance of 50 cm from the set. This
corresponds to a minimum level of approximately
100 mV (RMS) (PO≥ 0.2 mW) across a loudspeaker;
Philips type AD2071/Z50.
A listening-in set has to offer the user more facilities
e.g. howling limiting to reduce annoying loudspeaker
and line signals. Dynamic limiting of the loudspeaker
signal, with respect to supply conditions, can also be
required. Acoustic output levels for listening-in sets are
approximately 70 to 75 dBA. This corresponds to a
loudspeaker level of approximately 1 mV (RMS)
(PO≈ 20 mW).
2. The MUTE function of the TEA1085A has a logic input;
the MUTE function of the TEA1085 has a toggle input.
3. SEL: loudspeaker connected in a single-ended-load
configuration
BTL: loudspeaker connected in a bridge-tied-load
configuration
4. Consult the product specification for the package
outline/s.
FUNCTIONAL DESCRIPTION
The TEA1083/83A is normally used in conjunction with a
transmission circuit of the TEA1060 family. The circuit
must be connected between the positive line terminal
(pin 2) and pin SLPE of the transmission IC. The
transmission characteristics (impedance, gain settings,
etc.) are not affected.
An interconnection between the TEA1083/83A and a
member of the TEA1060 family is illustrated in Fig.5.
Supplies SUP, SREF, V
BB
and V
SS
In Fig.6 the line current is divided into ITR for the
transmission IC and I
for the monitoring circuit
SUP
TEA1083/83A.
ITR is constant:
ITR=V
I
SUP=Iline
/ R20
int
− ICC− I
TR
Where:
• V
is an internal temperature compensated reference
int
voltage of 500 mV (typ) between pins SUP and SREF
• R20 is a resistor connected between SUP and SREF
• ICC is the internal current consumption of the TEA106X
(approximately 1 mA).
A practical value for resistor R20 is 150 Ω; this produces a
current of approximately 3.3 mA (typ) for ITR and I
approximately equal to I
− 4.3 mA.
line
SUP
is
March 19945
Page 6
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
The circuit stabilizes its own supply voltage at VBB.
Transistor TR1 provides the supplies for the internal
circuits. Transistor TR2 is used to minimize signal
distortion on the line by momentarily diverting the input
current to VSS whenever the instantaneous value of the
voltage at V
fixed to a typical value of 2.95 V.
The supply at VBB is decoupled with respect to VSS by a
220 µF capacitor (C20).
The DC voltage (V
transmission IC and V
V
− VSS = V
SUP
The reference voltage of the transmission IC has to be
adjusted to a level where V
400 mV. The minimum voltage space between SUP and
VBB (400 mV) is required to maintain a 'high' efficiency of
the internal supply for mean speech levels. V
specified maximum level.
The internal current consumption of the TEA1083/83A
(I
) is typically 2.5 mA (where V
SUP0
The current I
0.4 mA) for the circuitry connected to SUP and I
(approximately 2.1 mA) for the internal circuitry connected
to VBB(see Fig.6).
LOUDSPEAKER AMPLIFIER (LSI1/LSI2 and QLS)
The TEA1083/83A has symmetrical inputs at LSI1 and
LSI2. The input signal is normally taken from the earpiece
output of the transmission circuit (see Fig.5) and/or from
the signal output of the DTMF generator via a resistive
attenuator.
The attenuation factor must be chosen in accordance with
the output levels from the transmission IC and/or DTMF
generator and, in accordance with the required output
power and permitted signal distortion from the
loudspeaker signal.
The output QLS drives the loudspeaker as a single-ended
load. The output stage has been optimized for use with a
50 Ω loudspeaker (e.g. Philips type AD2071). The
loudspeaker amplifier is enabled when the LSE input goes
HIGH. The gain of the amplifier is fixed at 35 dB.
Volume control of the loudspeaker signal can be obtained
by using a level control at the input (see Fig.5).
drops below the supply voltage VBB. VBB is
SUP
− VSS) is determined by the
SUP
; thus
int
+ V
LN−SLPE
consists of currents I
SUP0
int
SUP
.
− V
SUP
is greater than
BB (max)
BB (max)
− VSS= 3.6 V).
(approximately
BIAS
BB0
is the
TEA1083; TEA1083A
The maximum voltage swing at the QLS output is
V
V
I
available voltage space (VBB). Higher input levels and/or
lower supply currents will result in an increase of the
harmonic distortion due to signal clipping.
With a limit of 2.5 V (p-p), the maximum output swing is
dependent on the supply current and loudspeaker
impedance. It can be approximated, for low distortions, by
the following equation:
V
Where;
• V
• RLS= the loudspeaker impedance
• I
POWER-DOWN INPUT (PD)
During pulse dialling or register recall (timed loop break)
the telephone line is interrupted, thereby breaking the
supply current to the transmission IC. The capacitor
connected to V
TEA1083/83A during the supply breaks.
By making the PD input HIGH during the loop break, the
requirement on the capacitor is eased and, consequently,
the internal current consumption I
reduced from 2.1 mA to 400 µA typically. Transistors TR1
and TR2 are inhibited during power-down and the bias
current is reduced from approximately 400 µA to
approximately 50 µA with V
equation:
I
Where 3.6 < V
2Vd is the voltage drop across 2 internal diodes
(approximately 1.3 V)
Ra is an internal resistor (typical 50 kΩ)
LOUDSPEAKER ENABLE INPUT (LSE)
The LSE input has a pull-down structure. It switches the
loudspeaker amplifier, in the monitoring condition, by
applying a HIGH level at the input. The amplifier is in the
standby condition when LSE is LOW (input open-circuit or
connected to V
= 2.5 V (typical with 50 Ω load). The input level
O(p-p)
is approximately 16 mV(rms) and the supply current
LSI
> 11 mA. In this condition the signal is limited by the
SUP
O(p-p)
O(p-p)
SUPO
SUP(PD)
=2×(I
= the peak-to-peak level of the loudspeaker
= 2.5 mA (typ.)
= I
BIAS(PD)
− I
SUP
provides the supply for the
BB
= (V
< VBB+ 3V
SUP
).
SS
) ×π×R
SUPO
SUP
− 2Vd)/Ra
SUP
LS
(see Fig.5) is
BB0
= 3.6 V in the following
March 19946
Page 7
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
handbook, full pagewidth
line
V
CC
IR
TEA106x
V
EESLPE
LN
MIC
QR
SREF SUP V
PD
TEA1083
TEA1083A
LSE
LSI1LSI2
TEA1083; TEA1083A
BB
QLS
V
SS
MGR049
handbook, full pagewidth
line
Fig.5 Interconnection with a transmission IC of the TEA106X family.
I
line
C1
I
CC
R1
V
CC
TEA106x
V
EE
V
SUP
I
TR
LN
SLPE
R20
R9
I
SUP
SUP
SREF
TEA1083
V
int
TR1
TR1/TR2
CONTROL
I
BIAS
TR2
STABILIZER
V
SS
VOLTAGE
TEA1083A
SLPE
V
EE
I
BBO
V
BB
C28
MGR050
Fig.6 Supply arrangement.
March 19947
Page 8
Philips SemiconductorsProduct specification
Call progress monitor for line powered
TEA1083; TEA1083A
telephone sets
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC134)
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
SUP
V
SUP
V
SREF
VVoltage on all other pinsV
I
SUP
P
tot
T
stg
T
amb
T
j
Supply voltage
continuous−12V
during switch-on or line interruption−13.2V
Repetitive supply voltage from 1 ms to
−28V
5 s with 12 Ω current limiting resistor
in series with supply
Supply reference voltageVSS − 0.5V
− 0.5VBB + 0.5V
SS
+ 0.5V
SUP
Supply currentsee Fig.6−120mA
Total power dissipationT
= 75 °C; Tj = 125 °C
amb
TEA1083−500mW
TEA1083A−769mW
TEA1083AT−555mW
Storage temperature range−40+125°C
Operating ambient temperature range−25+75°C
Junction temperature−+125°C
THERMAL RESISTANCE
SYMBOLPARAMETERTHERMAL RESISTANCE
R
th j-a
from junction to ambient in free air (TEA1083)100 K/W
from junction to ambient in free air (TEA1083A)65 K/W
from junction to ambient in free air (TEA1083AT)90 K/W
March 19948
Page 9
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
MGR051
handbook, halfpage
120
I
SUP
(mA)
100
(1)
80
60
40
212
46810
(3)
(2)
V
SUP
− VSS (V)
handbook, halfpage
120
I
SUP
(mA)
100
80
60
40
212
TEA1083; TEA1083A
MGR052
(1)
(2)
(3)
46810
V
− VSS (V)
SUP
Fig.7 Safe operating area; see Table 2 (TEA1083).
handbook, halfpage
120
I
SUP
(mA)
100
80
60
40
212
(2)
(3)
46810
V
SUP
MGR053
(1)
− VSS (V)
Fig.8Safe operating areas see Table 3
(TEA1083A).
Table 2
CURVET
amb
P
tot
155°C700 mW
265°C600 mW
375°C500 mW
Table 3
CURVET
amb
P
tot
155°C1077 mW
265°C923 mW
375°C769 mW
Table 4
CURVET
amb
P
tot
155°C777 mW
265°C666 mW
375°C555 mW
Fig.9Safe operating area; see Table 4
(TEA1083AT).
March 19949
Page 10
Philips SemiconductorsProduct specification
Call progress monitor for line powered
TEA1083; TEA1083A
telephone sets
CHARACTERISTICS
= 3.6 V; VSS = 0 V; I
V
SUP
loudspeaker amplifier load = 50 Ω; all measurements taken in test circuit Fig.10; unless otherwise specified.
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supply
V
SUP
V
SUP−SREF
V
BB
∆V
BB
∆V
/∆TVariation of supply voltage with
BB
Minimum DC input voltage−VBB + 0.6−V
Internal reference voltage400500600mV
Stabilized supply voltageI
Variation of supply voltagefrom I
temperature, referred to 25 °C
I
SUP
Minimum operating current−2.54.0mA
THDDistortion of AC signal between
SUP and V
V
no(RMS)
Noise between SUP and V
(RMS value)
Current consumption in
power-down condition
I
SUP
I
BB
V
= 3.6 V−5075µA
SUP
VBB = 2.95 V−400550µA
Loudspeaker amplifier inputs LSI1 and LSI2
Z
G
∆G
i
v
v
input impedance (LSI1 and LSI2) single ended7.59.511.5kΩ
Voltage gain from LSI1/2 to QLS I
Total gain variation with input
signal from 2 mV(RMS) to
10 mV(RMS)
∆G/∆TTotal gain variation with
temperature referred to 25 °C
= 15 mA; V
SUP
EE
= 0 V (RMS); f = 800 Hz; T
SUP
= 15 mA2.752.953.15V
SUP
= 15 to 120 mA −15−mV
SUP
T
= −25 to +75 °C;
amb
I
= 15 mA
sup
EE
V
SUP(RMS)
psophometrically
= 1 V−0.3−%
weighted (P53 curve)
PD = HIGH
differential (LSI1 to LSI2) 151923kΩ
= 15 mA;
SUP
Vi = 2 mV (RMS)
= −25 to +75 °C−±0.4−dB
T
amb
= 25 °C; PD = LOW; LSE = HIGH;
amb
−±0.2−mV/K
−−71−dBmp
343536dB
−0.2−dB
Output capabilities
V
O(p-p)
Maximum output voltage
THD = 3%; 50 Ω load2.02.5−V
(peak-to-peak value)
V
O(p-p)
V
no(RMS)
Output voltage (peak-to-peak
value)
Noise output voltage (RMS
value)
Vi= 10 mV(RMS);
I
= 15 mA;
SUP
V
SUP−VEE
1kΩ between inputs
LSI1 and LSI2;
psophometrically
weighted (P53 curve)
LOW level input voltage0−0.3V
HIGH level input voltage1.5−V
BB
V
Input currentLSE = HIGH−510µA
LSE = LOW6080−dB
to QLS
I
in
A
R1
I
CC
620 Ω
V
CC
GAS1MIC−
3
GAS2
QR+
GAR
V
EESLPEREGSTAB
TEA1060
R5
3.6
kΩ
C1
100
µF
5
6
V
SUP
R20
I
TR
150 Ω
115
LN
72
8
MIC+
18
16910
C3
R9
4.7
20 Ω
µF
V
SUP − VSREF
V
CC
V
CC
V
LSI
I
SUP
SUP
SREF
LSEQLS
(12)
PD
TEA1083
LSI1
LSI2
(TEA1083A)
V
(8) 4
(9) 5
SS
2 (2)
1 (1)
I
BB
8 (16)3 (4)
V
BB
7 (15)(13) 6
C21
220
µF
V
V
O
R
LS
50 Ω
BB
MGR054
C20
470
µF
Fig.10 Test circuit.
Notes to figure 10
1. I
SUP=IIN
2.
Gv20 log
I
3.
TR
=
V
SUP SREF–
-------------------------------=
− I
R20
TR
V
-----------
V
LSI
o
4. The pin numbers in parenthesis refer to the TEA1083A/AT
5. LSE has to be HIGH to measure the voltage gain
6. PD has to be HIGH to measure in PD conditions
7. The pins not shown in the TEA1060 are left open-circuit
8. An impedance in series with pin SUP (e.g. an ammeter) should
be avoided as it interferes with the values of I
TR
and I
SUP
.
March 199411
Page 12
Philips SemiconductorsProduct specification
o
Call progress monitor for line powered
telephone sets
APPLICATION INFORMATION
An application of the TEA1083/83A, in conjunction with a
member of the TEA1060 family, is illustrated in figure 11.
The TEA1083/83A is used for call progress monitoring
during on-hook dialling. The dialling facilities are
performed by a microcontroller (e.g. PCD3344,
PCD3349).
Only the most important components have been shown.
For detailed information refer to a data sheet of the
TEA1060 family.
The electronic hook switch can be replaced by a
mechanical system (hook switch) with a hold/release
function which is intended for on-hook dialling.
a/b
line
b/a
R8
390 Ω
R1
11
IR
7
MIC−
8
MIC+
14
MUTE
620 Ω
151
V
CC
TEA1060
V
EE
101618
R2
130 kΩ
C5
100 nF
R3
3.9 kΩ
Z
bal
C1
100
µF
LN
GAR
DTMF
REG SLPE
C3
4.7
µF
R20
150 Ω
PD
QR
R9
20 Ω
12
6
5
13
150 nF
10 µF
C14
R4
50 kΩ
C2
ok, full pagewidth
R21
2.2 kΩ
C24
150 nF
R22
2.2
kΩ
L1
150 µH
TEA1083; TEA1083A
3 (4)8 (16)2 (2)
SREFV
SUP
BB
(15)
7
QLS
(12)
TEA1083
(TEA1083A)
6
PD
LSI1LSI2
4 (8)5 (9) 1 (1)
C22
220
nF
C23
220
nF
(13)
LSE
V
SS
C21
47 µF
C20
220
µF
line-interrupter
electronic
hook switch
V
cradle switch
DD
CRS
MICROCONTROLLER AND
INTERFACE CIRCUITRY
V
SS
Pin numbers in parenthesis refer to the TEA1083A/AT.
Fig.11 Application example when the TEA1083/83A is used in conjunction with the TEA1060.
March 199412
DTMFDP/FLMUTE
XTAL
ENABLE
MGR055
Page 13
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
A
A
UNIT
max.
mm
inches
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
SOT97-1
12
min.
max.
050G01MO-001AN
b
1.73
1.14
0.068
0.045
IEC JEDEC EIAJ
0.021
0.015
b
1
0.53
0.38
4
0510 mm
scale
b
cD E eM
2
0.36
1.07
0.23
0.89
0.014
0.042
0.009
0.035
REFERENCES
(1)(1)
9.8
9.2
0.39
0.36
6.48
6.20
0.26
0.24
L
e
1
M
3.60
8.25
3.05
7.80
0.14
0.32
0.12
0.31
EUROPEAN
PROJECTION
E
10.0
0.39
0.33
H
8.3
w
max.
0.2542.547.62
1.154.20.513.2
0.010.100.30
0.0450.170.0200.13
ISSUE DATE
92-11-17
95-02-04
(1)
Z
March 199413
Page 14
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
DIP16: plastic dual in-line package; 16 leads (300 mil); long body
D
seating plane
L
Z
16
e
b
b
1
9
A
w M
TEA1083; TEA1083A
SOT38-1
M
E
A
2
A
1
c
(e )
1
M
H
pin 1 index
1
0510 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
UNIT
mm
inches
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
A
max.
4.70.513.7
OUTLINE
VERSION
SOT38-1
min.
A
12
max.
0.15
IEC JEDEC EIAJ
050G09MO-001AE
b
1.40
1.14
0.055
0.045
b
1
0.53
0.38
0.021
0.015
cEeM
0.32
0.23
0.013
0.009
REFERENCES
D
21.8
21.4
0.86
0.84
8
scale
(1)(1)
6.48
6.20
0.26
0.24
E
(1)
Z
e
0.30
1
0.15
0.13
M
L
3.9
3.4
E
8.25
7.80
0.32
0.31
EUROPEAN
PROJECTION
9.5
8.3
0.37
0.33
w
H
0.2542.547.62
0.010.100.0200.19
ISSUE DATE
92-10-02
95-01-19
max.
2.2
0.087
March 199414
Page 15
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
SO16: plastic small outline package; 16 leads; body width 7.5 mm
D
c
y
Z
16
9
TEA1083; TEA1083A
SOT162-1
E
H
E
A
X
v M
A
pin 1 index
1
e
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
mm
A
max.
2.65
0.10
A
1
0.30
0.10
0.012
0.004
A2A
2.45
2.25
0.096
0.089
0.25
0.01
b
3
p
0.49
0.32
0.36
0.23
0.019
0.013
0.014
0.009
UNIT
inches
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
8
w M
b
p
0510 mm
scale
(1)E(1)(1)
cD
10.5
10.1
0.41
0.40
0.30
0.29
eHELLpQ
7.6
1.27
7.4
0.050
A
2
10.65
10.00
0.419
0.394
A
1
1.4
0.055
1.1
0.4
0.043
0.016
detail X
0.043
0.039
1.1
1.0
Q
3
0.250.1
0.01
A
θ
ywvθ
0.004
Z
0.9
0.4
0.035
0.016
o
8
o
0
(A )
L
p
L
0.25
0.01
OUTLINE
VERSION
SOT162-1
IEC JEDEC EIAJ
075E03 MS-013AA
REFERENCES
March 199415
EUROPEAN
PROJECTION
ISSUE DATE
95-01-24
97-05-22
Page 16
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
“Data Handbook IC26; Integrated Circuit Packages”
our
(order code 9398 652 90011).
DIP
S
OLDERING BY DIPPING OR BY WAVE
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
R
EPAIRING SOLDERED JOINTS
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
SO
REFLOW SOLDERING
Reflow soldering techniques are suitable for all SO
packages.
stg max
). If the
TEA1083; TEA1083A
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
AVE SOLDERING
W
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
EPAIRING SOLDERED JOINTS
R
Fix the component by first soldering two diagonally-
opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
March 199416
Page 17
Philips SemiconductorsProduct specification
Call progress monitor for line powered
TEA1083; TEA1083A
telephone sets
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
March 199417
Page 18
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
NOTES
TEA1083; TEA1083A
March 199418
Page 19
Philips SemiconductorsProduct specification
Call progress monitor for line powered
telephone sets
NOTES
TEA1083; TEA1083A
March 199419
Page 20
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
Indonesia: PT Philips Development Corporation, Semiconductors Division,
Gedung Philips, Jl. Buncit Raya Kav.99-100, JAKARTA 12510,
Tel. +62 21 794 0040 ext.2501, Fax. +6221 7940080
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+38111 635777
For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands415102/00/02/pp20 Date of release: March 1994Document order number: 9397 750 nnnnn
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