SLIC 2-CH 100-Pin TQFP

The Signal Processing Subscriber Line Interface Codec Filter C-SLICOFI (PEB 3268/PEF 3268) is a logic continuation of the well established family of the PCM-Codec-Filter-IC"s with the vertical integration of all DC-feeding, Supervision features on chip as well. Fabricated in a standard 1 pm BiCMOS technology the C-SLICOFI is tailored for very flexible solutions in digital communication systems. For the first time the C-SLICOFI uses the benefits of a DSP not only for the voice channel but even for line feeding and supervision which leads to a very high flexibility without the need for external components. Based on an advanced digital filter concept, the PEB 3268/PEF 3268 provides excellent transmission performance. The new filter concept leads to a maximum of independence between the different filter blocks. Each filter block can be seen as a one to one representative of the corresponding network element. Together with the software package C-SLICOS, filter optimizing to different applications can be done in a clear and straight forward procedure. The AC frequency behavior is mainly determined by the digital filters. Using the new oversampling 1 bit-AD/DA converter, linearity is only limited by second order parasitic effects. The new - digital - solution of line feeding offers free programmability of feeding current and voltage as well as very fast settling of the dc-operating point after transitions. A 0.3 Hz low pass filter in the DC-loop is mainly responsible for the system stability. Free programmable (balanced) ring generation with zero-crossing injection is implemented. Off hook detection with programmable thresholds is possible in all operating modes. To reduce overall power consumption of the line card, the C-SLICOFI provides a special mode called Power Denial where Off hook is done via 2 high voltage inputs (VLINE1 and VLINE2) directly connected to the line if the HV-SLIC is switched off. Single chip CODEC and FILTER including all LOW VOLTAGE SLIC functions Only few external components required No trimming or adjustments required Specification according to relevant CCITT, LSSGR and DBP recommendations Digital signal processing technique Advanced low power 1 µm BiCMOS technology PCM encoded digital voice transmission (A-Law or µ-Law) Four pin serial IOM-2 Interface Standard P-LCC-44 package High performance AD and DA Conversion Programmable digital filters for Impedance matching Transhybrid balancing Frequency response Gain Advanced test capabilities Integrated line and circuit tests Two programmable tone generators Optimized HV-SLIC Interface Fully digital programmable DC-Characteristic Programmable Constant Current from 0-70 mA Programmable Resistive Values from 0-2 x 500 ? Polarity reversal (programmable soft or hard) Integrated (balanced) Ringing Generation with zero crossing injection Programmable frequency between 16.6 and 70 Hz (up to 300 Hz for test) Programmable amplitude up to 2.125 Vrms (85 Vrms at ab-wire)