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参数资料
| 型号： | PBL38812 |
| 厂商： | ERICSSON |
| 英文描述： | Voice-switch circuit for Handsfree speakerphone TAM |
| 中文描述： | 语音免提扬声器开关电路谭 |
| 文件页数： | 5/10页 |
| 文件大小： | 133K |
| 代理商： | PBL38812 |
PBL 388 12
5
Figure 4. Pin configuration.
Pin Descriptions:
Refer to figure 4. (16-pin SO and 18-pin DIP package)
16-pin SO
SO DIP Symbol Description
1
16
CTR
Control input for gain dynamics
(25 or 50dB), mute and disable.
Transmitter channel negative input.
Input impedance 3 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.
Output of the transmitter channel signal
detector. Goes nagative referred to the
internal ref. voltage of app. 2V when a
transmitter signal is present.
Background noise detector output.
Goes positive referred to the internal ref.
voltage of app. 2V when a backgrounud
noise signal is present
2
17
-Txin
3
18
+Txin
4
1
F2out
5
2
Txout
6
3
TxDetin
7
4
TxDetout
8
5
NDet
SO DIP Symbol Description
9
6
CMP
Comparator input..
Summing point to the different
detector outputs.
Output of the receiver channel signal
detector. Goes positive referred to the
internal ref. voltage of app. 2V when a
receiver signal is present
Input of the receiver channel signal
detector. Input impedance 13 kohm.
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. Ashunt regulator, voltage
apprx. 3.3V at 1.0mA.
System ground.
Not connected.
10
7
RxDetout
11
8
RxDetin
12
9
Rxout
13
10
F5out
11 +Rxin
14
12
-Rxin
15
13
V+
16
14
15
GND
NC
18-pin DIP
Pin Pin
Pin Pin
F2out
Txout
TxDetin
TxDetout
N Det
CMP
RxDetout
Rx Detin
CTR
NC
GND
+V
-Rxin
+Rxin
1
2
3
4
5
6
7
8
16
15
14
13
12
11
F5out
9
10
+Txin
-Txin
18
17
Rxout
1
2
3
4
5
6
7
8
16
15
14
13
-Txin
CTR
NDet
F2out
+V
RxDetout
+Txin
TxDetin
-Rxin
Rxout
CMP
9
12
10
11
F5out
GND
TxDetout
RxDetin
Txout
相关PDF资料 |
PDF描述 |
|---|---|
| PBL388121SO | Voice-switch circuit for Handsfree speakerphone TAM |
| PBL388131SOT | Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PBL388121SO | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice-switch circuit for Handsfree speakerphone TAM |
| PBL388121SOT | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice-switch circuit for Handsfree speakerphone TAM |
| PBL38813 | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| PBL388131N | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
| PBL388131SO | 制造商:ERICSSON 制造商全称:Ericsson 功能描述:Voice-switched Speakerphone Circuit with built in loudspeaker amplifier |
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