UNIVERSAL SPEECH NETWORK
S1T8603
1
INTRODUCTION
The S1T8603 can fulfill the standards of other countries by changing
the external component. Dynamic or piezoelectric type can be used
with receiver. Each gain is controlled with AGC in accordance with the
line current. The S1T8603 can be operated down to D.C line 1.6V.
FEATURES
Independent adjustment of DC resistance and AC impedance.
ECM or dynamic microphone can be used.
DTMF signal interface.
Mute function
Operates at the low line voltage (1.6V)
Low or high impedance receiver type can be used.
Low line current operation. (I
L
= 4mA)
ORDERING INFORMATION
Device
Package
Operating Temperature
S1T8603X01-D0B0
16
-
DIP
-
300A
-
25
C to +75
C
S1T8603X-S0B0
16
-
SOP
-
225
16
-
DIP
-
300A
16
-
SOP
-
225
S1T8603
UNIVERSAL SPEECH NETWORK
4
ELECTRICAL CHARACTERISTICS
(Ta = 25
C, f = 1kHz, I
L
= 15mA, unless otherwise noted)
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Line Voltage
V
L
I
L
= 4mA
-
2.1
-
I
L
= 15mA
3.55
3.9
4.25
V
I
L
= 50mA
4.1
4.6
5.1
I
L
= 140mA
-
6.45
7.0
Line Voltage with R
UP
V
LU
Between Pin14 & Pin 16
R
up
= 220k
4.15
4.35
4.55
V
Line Voltage with R
DOWN
V
LD
Between Pin 14& Pin 1
R
DOWN
= 330k
3.25
3.45
3.65
V
TX Gain
G
V (TX)
R
TX
= 68k
V
I
= 3mVrsm
I
L
= 15mA
49.5
51.5
53.5
I
L
= 50mA
45.5
47.5
49.5
dB
I
L
= 80mA
43.5
45.5
47.5
TX Gain frequency response
G
TXF
f = 300 to 3400Hz
-
0.2
-
dB
TX Dynamic output voltage
V
O(TX)
THD = 2% THD = 10%
-
1.6
-
Vrms
1.7
2.2
-
MIC Input Impedance
Z
I(MIC)
-
-
64
-
k
RX Gain
G
V(RX)
R
LOAD
=
150
+10u
I
L
= 15mA
28.5
30.5
32.5
I
L
= 50mA
24.5
26.5
28.5
dB
I
L
= 80mA
22.5
24.5
26.5
RX Gain frequency response
G
RXF
f = 300 to 3400Hz
-
0.2
-
dB
RX Dynamic output voltage
V
O(RX)
THD = 2% (R
L
= 150
)
THD = 10%
0.22
0.29
-
Vrms
0.30
0.40
-
DTMF GAIN
G
V (MF)
R
TX
= 68K
(MUTE = H)
23.5
25.5
27.5
dB
DTMF Input Impedance
Z
I (MF)
-
-
20.7
-
k
MUTE Input Voltage
V
IH (MUTE)
-
1.5
-
V
CC
V
V
IL (MUTE)
-
-
-
0.8
TX Gain variation range by AGC
G
TXA
R
AGC
= 180K
I
L
= 15 ~ 80mA
-
-
6
-
dB
RX Gain variation range by AGC
G
RXA
R
AGC
= 180K
I
L
= 15 ~ 80mA
-
-
6
-
dB
TX Noise Output Voltage
(Psophometric weighted)
V
TNO
-
-
-
72
-
dBmp
RX Noise Output Voltage
(Psophometric weighted)
V
RNO
-
-
50
-
uV
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