参数资料
型号: CPC5710N
厂商: IXYS Integrated Circuits Division
文件页数: 8/10页
文件大小: 0K
描述: IC PHONE LINE MONITOR 8-SOIC
标准包装: 100
系列: LITELINK®
功能: 电话线监控器(PLM)
电路数: 1
电源电压: 3 V ~ 5.5 V
电流 - 电源: 10mA
功率(瓦特): 300mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
包括: 全波振铃检测器
其它名称: CLA169
INTEGRATED CIRCUITS DIVISION
CPC5710N
R03
www.ixysic.com
7
3. Applications
3.1 Line-In-Use (LIU) and Line Polarity Detector
This circuit performs two phone line interface
functions, LIU and line polarity detection. The LIU
output is logic high if the tip to ring voltage is less than
approximately 17V. This will occur whenever a parallel
device on the line such as a telephone or FAX is taken
off hook. This circuit can also be used to detect for the
presence or loss of battery.
The Polarity output indicates the polarity of the phone
line. Whenever tip is positive with respect to ring,
Polarity out will be a logic high.
Figure 4. LIU and Polarity Detection Application Circuit
+V
U1 CPC5710
LIU
Polarity
R1-4
8.06M
1%
1206
Ω
R5
604K
Ω
R17
4.7M
Ω
R15
10K
Ω
R14
4.7M
Ω
R16
10K
Ω
R6
4.7M
Ω
TIP
RING
Unless noted otherwise:
All resistors 1%, 1/16 W.
All capacitors 16 V 10%.
Switch shown
in Linear Mode
IN+
IN-
VDD
VSS
LINOUT+
+
-
+
1.625 V
1.25 V
2 V
0 V
A=6
V
3
6
7
1
2
5
4
GND
8
GND
+
-
+
-
VDD
50k
Ω
R1
R2
R3
R4
R9
499K
Ω
R13
20K
Ω
R12
20K
Ω
R11
499K
Ω
R8
20K
Ω
+V
1/4 U2
LM339
IN-
IN+
OUT
+V
1/4 U2
LM339
IN-
IN+
OUT
+V
1/4 U2
LM339
IN-
IN+
OUT
+V
R10
21K
Ω
R7
21K
Ω
C1
1nF
LIN/CMP
CMPOUT
LINOUT-
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