Product category: Communications ICs (Wired)
News Release from: Clare | Subject: CPC5710N
Edited by the Electronicstalk Editorial Team on 21 March 2003
Phone line monitor
mops up discrete circuitry
The CPC5710N phone line monitor IC implements telephone line interface functions, previously available only with discrete components, saving printed-circuit board space and cost
Using Clare Litelink technologies, the CPC5710N is a CMOS special-purpose amplifier with an additional comparator circuit. The common-mode rejection ratio of over 40dB makes the CPC5710N excellent for telephone line condition sensing, discrete voice recording, and signal monitoring applications.
This article was originally published on Electronicstalk on 21 March 2003 at 8.00am (UK)
Related stories
Flux sensor simplifies motor monitoring
Magnetic flux sensor includes a unique adjustable digital filter that significantly improves signal to noise performance while also reducing signal bandwidth
MOSFET powers up phone line interface IC
The CPC5603C N-channel depletion mode MOSFET serves as a hook switch and linear regulator for Litelink III phone line interface IC applications
"By leveraging Clare's core telephony competency and Litelink silicon DAA (data access arrangement) technology, the CPC5710N delivers a superior solution to designers of telephone network interfaces", said Mark Heisig, Clare Vice-President of Technology and Business Development.
The CPC5710N can be used by itself for phone line monitoring applications, or it can be used in conjunction with the Clare CPC5621A Litelink phone line interface IC/DAA for a complete voice or data phone line interface solution with line condition sensing.
The CPC5710N amplifier section has a fixed gain, high input impedance, differential amplifier architecture that offers better longitudinal balance performance compared to traditional discrete designs.
Further reading
Solid state relay upgrades switching performance
The CPC1510 is a current-limiting normally open 1-Form-A optically isolated solid state relay that replaces electromechanical devices and enhances the performance of wireline-interface applications
Line interface aids international exchange
The CPC5622A is the newest member of the Litelink III phone line interface IC family for direct access arrangements in telephony applications
The amplifier linear output can be used in differential or single-ended applications.
The comparator circuit can be used as a full-wave ringing detection circuit with its internal threshold, large hysteresis, and CMOS output.
In signal monitoring applications, the CPC5710 can be used for display feature (caller-ID), signal processing, and discrete voice monitoring or recording.
When used in voice monitoring or voice recording applications, the CPC5710N is virtually undetectable on the telephone line.
The CPC5710 detects ringing signals with the built-in comparator.
Ringing detection threshold is settable via external component selection.
In line condition sensing applications, the CPC5710N can be used for line polarity indication, line-in-use detection (another phone off-hook), battery presence monitoring, and tip lead and ring lead voltage monitoring.
Application circuits supplied in the CPC5710N datasheet meet all worldwide telephone network compatibility requirements, including isolation requirements.
Designs using the CPC5710N can be made compliant with a wide range of requirements, including TIA/EIA/IS-968 (FCC part 68), UL1950, UL60950, EN60950, IEC60950, EN55022B, CISPR22B, EN55024, EIA/TIA 464, and TBR-21.
The CPC5710N is packaged in a small 8-pin SOIC package, with TTL compatible inputs and CMOS logic outputs.
The CPC5710N operates on either a 3.3 or 5V power supply.
• Clare: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• NEW
• Electronicstalk Home Page
Related Business News
Taiwan stocks end down in biggest...
...drop in over 1 yr. Taipei, July 27 (Reuters) - Taiwan shares fell 4.22 percent on Friday to their lowest close in three weeks, marking their largest one-day percentage drop in more than a year, after a sell-off on Wall Street hurt big exporters such as TSMC .
Nippon Oil Aug refining seen flat, eyes Sudan crude
Tokyo, July 27 (Reuters) - Japan's top oil refiner Nippon Oil Corp. will keep its August processing volumes steady versus a year ago to meet summer gasoline demand and is seeking more Nile Blend crude to meet higher utility use.
Fluor Gains Eastman Chemical Gasification Plant Feed Work
Fluor Corporation announced today that it was selected by Eastman Chemical Company to provide front-end engineering and design work for a $1.6 billion gasification project along the Texas Gulf Coast.
Migao Corporation Secures Preferential Natural Gas Prices
Toronto, Ontario-- - Migao Corporation , a leading producer of specialty potash fertilizers for the Chinese market, is pleased to announce that it has negotiated preferential natural gas prices in Sichuan Province from China Petroleum & Chemical Corpora
South Korean envoy to meet Afghan...
...president over hostage crisis. A Seoul presidential envoy heading to Afghanistan will seek an urgent meeting with President Hamid Karzai to try to save 22 South Koreans kidnapped by the Taliban, officials said.
Search the Pro-Talk network of sites
