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PBL38814 数据表(PDF) 7 Page - Ericsson

部件名 PBL38814
功能描述  Voice - switched 2-channel Circuit with loudspeaker amplifier
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制造商  ERICSSON [Ericsson]
网页  http://www.ericsson.com
标志 ERICSSON - Ericsson

PBL38814 数据表(HTML) 7 Page - Ericsson

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7
PBL 388 14
Figure 7. Transmitter channel input
amplifier used to suppress ripple in the
mic. supply. (CMRR).
R1 = R2
≈ 3k
R3 = R4
≈ 100k
R5 = R6
C1 = C2
Figure 8. Transmitter and receiver
channel rectifier characteristics.
Figure 10. Transmitter and receiver
channel output dynamics.
Figure 9. Relationship in timing between
the voltage levels at Tx
In, TxDet and NDet
Txin
TxDetout
N Det
time
A
0.5
1.0
1.5
V
Rx in
10
VTxDet
≈1.9V
V ref
-600
-400
-200
+600
+200
+400
Vref
2.5
5.0
7.5
V
Tx in
RxDet
V
m
Vp
V+ (V)
V
(mV)
Txout
2.4
2.6
2.8
3.0
3.2
3.4
100
200
300
400
500
2.4
2.6
2.8
3.0
3.2
3.4
V+ (V)
100
200
300
400
500
VR
(mV)
xout
F1
1
2
-
+
F2
R4
R2
R3
Ref.
R1
R6
R5
C2
C1
C3
C4
R7
17
Mic.
+
PBL
388 14


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