Building on years of telecommunications line interface experience and high voltage processing expertise, Clare offers the CPC1465 and the CPC1466. The CPC1465 is specifically designed for the ISDN market and can additionally fulfill the DC Termination requirements for SHDSL interfaces. The CPC1466 is specifically designed for the ADSL/VDSL broadband market in applications where no voice service provides loop current.
The CPC1465 provides a polarity-insensitive DC termination for wetting (sealing) current and a recognizable signature for MLT and SARTS systems. The part has excellent linearity (70dB typ.) to minimize the harmonic distortion associated with its AC impedance and well-controlled turn-on and turn-off characteristics to minimize impulse noise and in-band signal energy into the DSL channel. Since it interfaces with the tip/ring pair, it is rated at 300V to handle power cross and lightning transients. The part will be manufactured in Clare’s proven 320V Silicon-On-Insulator (SOI) process and packaged in a 16 pin SOIC.
The CPC1466 is a high-voltage, monolithic device that provides a path for DC wetting (sealing) current in customer premises equipment (CPE) to eliminate phone line corrosion on DSL twisted-pair copper lines without telephone voice services (i.e. only broadband services). Internally, a bridge rectifier provides a polarity-insensitive DC termination for DSL loop sealing current. The IC includes an electronic inductor, break-over and latch circuits, current limit and excess power protection. A sealing current detect output provide the means to monitor the loop for the presence of sealing current in the loop.
