PBL 3786
Maximum Ratings
Parameter
Symbol
Min.
Max.
Unit
Speech switch supply current
Speaker amp. supply current
Tone ringer supply current
Tone ringer supply voltage
Inputs HFµPS, LFµPA, PWMµPC max. voltage
Operating temperature
Storage temperature
I
D
I
+L
I
RVI
V
RVI
-20
-55
T
Stg
10
200
100
40
6
+70
+125
mA
mA
mA
V
V
°C
°C
v
+
11 V+
GND 16
PBL 3786
2 Txin
I in
In case V
Ref
is used for
auxiliary circuits,
isolate as shown.
–
+
V Ref
Figure 2. Isolation and measure-
ment of V
Ref
.
+
100µF/16V
V
+
V
Txout
10
µF
+
I
D
11 V +
GND 16
Rx out 8
10
µF
+
V
Rxout
R
Rxout
3
Tx out
R
Txout
PBL 3786
2 Tx in
N Det
5
C
TxDet
I
Tx Det
4
CMP
6
C
RxDet
50 kΩ
NDet
4.7
µF
+
I
V
Txin
Rx in
9
Rx Det
7
CTR
10
1
µF
+
I
Rxin
Txin
V
Rxin
0.1µF
R
CTR
I
RxDet
I
CTR
I
TxDet
V
TxDet
V
NDet
V
CMP
V
RxDet
V
CTR
Figure 3. Test circuit.
Reference fig. no. 3.
V
+
11 V
+
GND 16
PBL 3786
V
Txin
2 Tx
in
Tx
Det
4
CMP
6
0.1µF
V
Rx
Det
7
Rx
in
9
N
Det
5
V
Rxin
ı
TxDet
50kΩ
ı
RxDet
V
RxDet
ı
NDet
V
NDet
V
TxDet
CMP
Figure 4. Test circuit.
Reference fig. no. 4.
2
ERICSSON [ ERICSSON ]
