CM8870SI California Micro Devices Corporation, CM8870SI Datasheet
CM8870SI
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CM8870SI Summary of contents
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CALIFORNIA MICRO DEVICES Features • Full DTMF receiver • Less than 35mW power consumption • Industrial temperature range • Uses quartz crystal or ceramic resonators • Adjustable acquisition and release times • 18-pin DIP, 18-pin DIP EIAJ, 18-pin SOIC, 20-pin ...
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CALIFORNIA MICRO DEVICES Absolute Maximum Ratings: (Note 1) Absolute Maximum Ratin mbol Power Supply Volta Vdc Voltage on any Pin I Current on ...
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CALIFORNIA MICRO DEVICES AC Characteristics: All voltages referenced to V using test circuit in Figure 1 unless otherwise noted. Symbol Valid Input Si g nal Levels (each tone of composite signal) ...
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CALIFORNIA MICRO DEVICES Timing Diagram EVENTS tREC V IN ESt St/Gt DATA OUTPUTS DECODED TONE # N+1 Q1-Q4 StD OUTPUT TOE Explanation of Events A. Tone bursts detected, tone duration invalid, outputs not updated. B. Tone #n detected, tone duration ...
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CALIFORNIA MICRO DEVICES Functional Description The CAMD CM8870/70C DTMF Integrated Receiver provides the design engineer with not only low power consumption, but high performance in a small 18-pin DIP, SOIC, or 20-pin PLCC package configuration. The CM8870/70C’s internal architecture consists ...
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CALIFORNIA MICRO DEVICES Input Configuration The input arrangement of the CM8870/70C provides a differential input operational amplifier as well as a bias source (V ) which is used to bias the inputs at mid-rail. REF Provision is made for connection ...
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CALIFORNIA MICRO DEVICES 697 1336 697 1477 770 1209 770 1336 770 1477 852 1209 852 1336 852 1477 941 1336 941 1209 941 1477 697 1633 770 1633 852 ...
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CALIFORNIA MICRO DEVICES FREQUENCY Hz PRECISE DIAL TONES DTMF TONES X = 350Hz A = 607Hz y = 440Hz B = 770Hz C = 852Hz D = ...
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CALIFORNIA MICRO DEVICES OSC1 OSC2 OSC3 OSC1 of other CM887X's Clock input of other devices 30pF Figure 7. CM8870C Crystal Connection (PLCC Package Only) Pin Assignments 1 18 IN+ IN IN– IN– St/ ...