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| 型号： | CPC5712U |
| 厂商： | CLARE INC |
| 元件分类： | 通信及网络 |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO16 |
| 封装： | ROHS COMPLIANT, QSOP-16 |
| 文件页数： | 1/10页 |
| 文件大小： | 387K |
| 代理商： | CPC5712U |
DS-CPC5712 - R00G
www.clare.com
1
CPC5712
Phone Line Monitor with Detectors (PLMD)
Features
CPC5712 Outputs:
Two Independent Programmable Level Detectors
with Programmable Hysteresis
Fixed-Level Polarity Detector with Hysteresis
Differential Linear Output
Minimum External Components
Excellent Common-Mode Rejection Ratio
(CMRR) > 55dB
Application circuits meet isolation requirements of
worldwide telephony standards
Worldwide telephone network compatibility
3.0V to 5.5V Operation
High differential input impedance;
very low common-mode input impedance
Fixed Gain
CMOS Logic Level (TTL Compatible) output
Small QSOP 16-Lead package
Applications
VoIP Gateways, IP-PBX, xDSL
TIP/RING Monitoring
Line-In-Use Detection
Polarity Detection for Caller ID, Enhanced 911
Battery Detection, PSTN Check
Non-telephony voltage level detection applications
Instrumentation
Industrial Controls
Description
The CPC5712 is a special purpose Phone Line
Monitor with Detectors (PLMD) integrated circuit that
is used in various high-voltage telephony applications
such as VoIP gateways and IP-PBXs. The device
monitors the TIP/RING potential through a
high-impedance divider (resistor isolation) to derive
two programmable signal level detects, polarity
information, and a scaled representation of the phone
line voltages. In use, the resistor divider and the high
input impedance of the CPC5712 make the circuit
practically undetectable on the line.
The two voltage-level detects are programmed with
external resistors, which gives the designer complete
freedom with respect to line voltage detection levels.
The level settings also have programmable hysteresis
to prevent false triggering conditions. Detection of
these levels allows the user to determine the condition
of the line.
This device can also be used in non-telephony
applications such as instrumentation and industrial
controls, especially when a low-level differential level
needs to be detected in the presence of a large
common-mode voltage.
Ordering Information
Figure 1
CPC5712 PLMD With Support Components
Part
Description
CPC5712U
PLMD, 16-Lead QSOP (100/tube)
CPC5712UTR
PLMD, 16-Lead QSOP (2000/Reel)
DET1
DET2
POLARITY
+
-
IN+
IN-
OUT+
TIP
RING
OUT -
OUT+
V
CC
10
13
12
11
9
1
14
7
8
4
5
6
3
2
R
DIFF
R1
R5
R4
R3
R2
V
REF
V
L1
V
H1
V
L2
V
H2
G = 5
CPC5712
V+
Voltage Level Detect 2
Voltage Level Detect 1
Polarity Output
+ Analog Output
- Analog Output
R
IN2
R
IN1
GND
15
16
RoHS
2002/95/EC
e3
Pb
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