Product/Service
MTC1204 Integrated Circuit
• 1 to 16 demultiplexer (DMUX)
• Integrated clock and data recovery (CDR)
• Low Jitter VCO with external control loop
• High sensitivity data inputs
• Jitter performance complies with industry standards
Applications
• Telecom transmission systems
• SONET OC-192 and SDH STM-64 equipment
• Forward Error Correction data rates supported
Description
The MTC1204 is a 10 Gb/s 1 to 16 demultiplexer (DMUX) with integrated clock and data recovery for use in SONET OC-192, SDH STM-64, and proprietary system applications. In a typical application, the demultiplexer accepts a 10 Gb/s data stream from a high speed fiberoptic network and converts it into 16 differential outputs at 622 Mb/s.
The on-chip Phase Detector, Frequency Window Detector, and precision Voltage Controlled Oscillator (VCO) are used in combination with an external op-amp control loop to derive a low jitter 9.953 GHz clock from the incoming data. This clock is divided by 16 to generate the outgoing 622 MHz clock. The 622 Mb/s data channels are time-aligned to the 622 MHz clock to provide 16 low jitter synchronous outputs.
The MTC1204's high sensitivity data inputs ensure accurate data recovery for signal amplitudes as low as 20 mVpp. A Loss Of Signal (LOS) detector indicates when the input signal is no longer sufficient to achieve an acceptable bit error ratio (BER).
All data and clock I/O use Current Mode Logic (CML) buffers and are provided with on-chip 50W terminations to minimize external component count. The MTC1204 is provided in a 128 pin quad flat pack (QFP) and operates from a single -5.2 V power supply. The circuitry was designed for use in equipment which is required to comply with Bellcore, ANSI, and ITU-T international standards for SONET and SDH systems.
Multilink Technology Corporation, 300 Atrium Drive, Second Floor, Somerset, NJ 08873-4105. Tel: 732-537-3700; Fax: 732-805-9177.
