PBL38541/1SO-T データシートの表示（PDF） - Ericsson
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PBL38541/1SO-T Datasheet PDF : 14 Pages
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PBL 385 41
+L 1
TO 2
TI 3
+C 4
Mute 5
GR 6
DCS1 7
DCO2 8
DCO1 9
18 RE 2
17 RE 1
16 DR
15 RI
14 -L
13 MI 2
12 MI 1
11 MO
10 DI
18-pin DIP
Figure 5. Pin configuration.
Pin Descriptions
Refer to figure 5.
DIP SO Name
Function
+L 1
TO 2
TI 3
+C 4
Mute 5
GR 6
DCS1 7
DCO2 8
DCO1 9
NC 10
20 RE 2
19 RE 1
18 DR
17 RI
16 -L
15 MI 2
14 MI 1
13 MO
12 DI
11 NC
20-pin SO
11
22
33
44
55
66
77
88
99
10 12
11 13
12 14
13 15
14 16
15 17
16 18
17 19
18 20
10
11
4
+L
TO
TI
+C
Mute
GR
DCS 1
DCO 2
DCO 1
DI
MO
} MI 1
MI 2
-L
RI
DR
} RE 1
RE 2
Output of the DC-regulator and transmitter amplifier, connected to the line through a polarity
guard diode bridge.
Output of the transmitter amplifier, connected through a resistor of 47 to 100 ohm to -L,
sets the DC-resistance of the circuit. The output has a low AC output impedance and the
signal is used to drive a side tone balancing network.
Input of the transmitter amplifier. Input impedance 17 kohm ± 20 %.
Positive power supply terminal for most of the circuitry inside the PBL 385 41 (about 1 mA current
consumption). The +C pin must be connected to a decoupling capacitor of 47 µF to 150 µF.
When low, speech circuit is muted and the DTMF input is enabled. Maximum voltage (at mute) is
0.3 V, current sink requirement of external driver is 50 µA.
Control input for the gain regulation function.
Control input to the DC1-supply. A resistor to -line sets the maximum current load of the supply.
Output of the DC2-supply.
Output of the DC1-supply.
Input for the DTMF-signal. Input impedance 25 kohm ± 20 %.
Output of the microphone amplifier or DTMF-amplifier.
Inputs to the microphone amplifier. Input impedance 1.7 kohm ± 20 %.
The negative power terminal, connected to the line through a polarity guard diode bridge.
Input of receiver amplifier. Input impedance 38 kohm ± 20 %.
Control input for the receiver amplifier driving capability.
Receiver amplifier outputs. Output impedance is approximately 3 ohm.
Not connected
Not connected
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