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The MC145506 is a per channel codec–filter PCM mono–circuit. This device performs the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM systems. It has HCMOS compatible digital outputs and otherwise supplements the MC145500 – MC145505 series of PCM Codec– Filters. The MC145506 is functionally similar to the MC145502. It is designed to operate in both synchronous and asynchronous applications and contains an on–chip precision reference voltage. The MC145506 is offered in a 22–pin package and has the capability of selecting from three peak overload voltages (2.5, 3.15, and 3.78 V).
Most of the features can be made available in a lower pin count package tailored to a specific user’s application. Contact the factory for further details.
The MC145506 maintains compatibility with Motorola’s family of TSACs and MC3419/MC33120 SLIC products.
The MC145500 family of PCM Codec–Filter mono– circuits utilize CMOS due to its reliable low–power performance and proven capability for complex analog/digital VLSI functions.