CPC5710NTR Clare, CPC5710NTR Datasheet - Page 7

• Manufacturer Part Number: CPC5710NTR
• Description: IC PHONE LINE MONITOR 8-SOIC
• Manufacturer: Clare
• Series: LITELINK®r

Specifications of CPC5710NTR

• Function: Phone Line Monitor (PLM)
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 5.5 V
• Current - Supply: 10mA
• Power (watts): 300mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Includes: Full-Wave Ring Detector
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Other names: CLA301TR; CPC5710NTR

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
Figure 5. LIU and Polarity Detection Application Circuit
R02
TIP
RING
R1
R3
8.06M
1206
R1-4
1%
R4
R2
Ω
R5
604KΩ
6
7
3
IN+
IN-
LIN/CMP
Unless noted otherwise:
All resistors 1%, 1/16 W.
All capacitors 16 V 10%.
V
50kΩ
DD
V
V
DD
SS
1.625 V
+
-
U1 CPC5710
1.25 V
+
+
-
-
+
-
A =6
V
www.clare.com
+
-
0 V
2 V
in Linear Mode
Switch shown
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.
LINOUT+
LINOUT-
V
CMPOUT
GND
DD
GND
V
DD
2
5
4
8
1
+V
499KΩ
499KΩ
20KΩ
20KΩ
20KΩ
R13
R12
R11
R8
R9
R10
21KΩ
R7
21KΩ
IN+
IN-
IN+
IN-
IN+
IN-
4.7MΩ
4.7MΩ
4.7MΩ
R14
R17
R6
OUT
OUT
OUT
+V
+V
+V
1/4 U2
LM339
1/4 U2
LM339
1/4 U2
LM339
CPC5710N
+V
+V
R16
10KΩ
R15
10KΩ
C1
1nF
Polarity
LIU
7