Overview: MV8870
- PLESSEY . , 5enIiconductors _ _ _ _ _P_ REL_ IMIN_ ARY_INF_ ORM_AT_ION
Preliminary Information is Issued to advise Customers of potential new products which are designated 'Experimental' but are, nevertheless, serious development projects and Is supplied without liability for errors or omissions. DetailS given may change without notice and no undertaking is given or implied as to current or future availability. Customers Incorporating 'experimental' product in their equipment designs do so at their own risk. Please consult your local Plessey Semiconductors sales outlet for details 01 the current status.
MV8870EXP
DTMF RECEIVER
The MV8870 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions, fabricated on Plessey Semiconductors' double-poly IS02-CMOS technology. The filter section uses switched capacitor techniques for high- and low- group filters and dial-tone rejection; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimised by on-chip provision of a differential input amplifier, clock oscillator and latched 3-state bus interface. APPLICATIONS
• PABX • Central Office • Key Systems • Mobile Radio • Remote Control • Remote Data Entry DG18
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