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参数资料
| 型号： | PBL388131SOT |
| 厂商： | ERICSSON |
| 英文描述： | Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| 中文描述： | 语音交换与内置免提扬声器放大器电路 |
| 文件页数： | 5/16页 |
| 文件大小： | 299K |
| 代理商： | PBL388131SOT |
5
PBL 388 13
Figure 6. Pin configuration.
Pin Descriptions
Refer to figure 6. (24 pin DIP and 24 pin SO package)
24 pin SO
Pin
Symbol
Description
1
-Txin
Transmitter channel negative input.
Input impedance 3.16 kohm.
Transmitter channel positive input.
Input impedance 100 kohm.
Output of the second amplifier in the
transmitter channel.
Transmitter channel output. Min. ac
load impedance 10 kohm.
Input of the transmitter channel signal
detector. Input impedance 13 kohm.
TxDetout Output of the transmitter channel signal
detector. Goes nagative referred to the
internal ref. voltage of appx. 2V when a
transmitter signal is present.
NDet
Background noise detector output.
Goes positive referred to the internal ref.
voltage of app. 2V when a background
noise signal is present
CMP
Comparator input. External resistance
to this point should not be less than
50 kohm. Summing point to the different
detector outputs.
RxDetout Output of the receiver channel signal
detector. Goes positive referred to the
internal ref. voltage of appx. 2V when a
receiver signal is present
RxDetin
Input of the receiver channel signal
detector. Input impedance 13 kohm.
2
+Txin
3
F2out
4
Txout
5
TxDetin
6
7
8
9
10
Pin
Symbol
Description
11
Rxout
Receiver channel output. Min. ac load
impedance 10 kohm.
Output of the second amplifier in the
receiver channel.
Receiver channel positive input. Input
impedance 140 kohm.
Receiver channel negative input. Input
impedance 20 kohm.
Supply of the speech switching circuitry.
A shunt regulator, voltage apprx. 3.3V at
1.0mA.
GND
System ground (- line ).
-C
LS
Loudspeaker power amplifier output.
VOL
Volume control input. By sourcing a
current of appx. 0-40
μ
A into this pin the
gain can be reduced.
+L
Positive supply for the loudspeaker
amplifier.
RDC
Power ampl. supply options. Pins - C,
RE
RDC and RE are explained in the text.
LSPin
Loudspeaker amplifier signal input. Input
impedance 30 kohm.
CTR
Control input for gain dynamics
(25 or 50dB), mute and disable.
12
F5out
13
+Rxin
14
-Rxin
15
V+
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
23
24
-Txin
+Txin
F2out
Txout
TxDetin
TxDetout
N Det
CMP
RxDetout
RxDetin
Rxout
F5out
+Rxin
-Rxin
V+
-C
LSP
+L
R
DC
R
E
VOL
LSPin
GND
CTR
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
23
24
-Txin
+Txin
F2out
Txout
TxDetin
TxDetout
N Det
CMP
RxDetout
RxDetin
Rxout
F5out
+Rxin
-Rxin
V+
-C
LSP
+L
R
DC
R
E
VOL
LSP in
GND
CTR
24 pin DIP
相关PDF资料 |
PDF描述 |
|---|---|
| PBL38813 | Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| PBL388131N | Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| PBL388131SO | Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| PBL38814 | Voice - switched 2-channel Circuit with loudspeaker amplifier |
| PBL388141N | Voice - switched 2-channel Circuit with loudspeaker amplifier |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PBL38814 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice - switched 2-channel Circuit with loudspeaker amplifier |
| PBL388141N | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice - switched 2-channel Circuit with loudspeaker amplifier |
| PBL388141SO | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice - switched 2-channel Circuit with loudspeaker amplifier |
| PBL388141SOT | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice - switched 2-channel Circuit with loudspeaker amplifier |
| PBL3-RP15 | 制造商:Middle Atlantic Products 功能描述: |
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