pbl388141sot ETC-unknow, pbl388141sot Datasheet - Page 7

• Manufacturer Part Number: pbl388141sot
• Description: Voice Switched 2-channel Circuit With Loudspeaker Amplifier
• Manufacturer: ETC-unknow

Figure 8. Transmitter and receiver
channel rectifier characteristics.
Figure 9. Relationship in timing between
the voltage levels at Tx
Figure 7. Transmitter channel input
amplifier used to suppress ripple in the
mic. supply. (CMRR).
R1 = R2
R3 = R4
R5 = R6
C1 = C2
Figure 10. Transmitter and receiver
channel output dynamics.
3k
100k
In
, Tx
Det
and N
Det
500
400
300
200
100
V
Txout
(mV)
2.4
2.6
A
2.8
+
R7
C4
3.0
+600
+400
+200
R5
R6
3.2
TxDetout
N Det
Txin
3.4
Mic.
0.5
C3
V+ (V)
C2
C1
1.0
1
R4
2
500
400
300
200
100
R2
V
(mV)
R
R1
xout
2.4
1.5
-
F
F
1
2.6
2
+
17
Ref.
R3
388 14
2.8
PBL
3.0
PBL 388 14
3.2
time
3.4
V+ (V)
7