MT8870DC MITEL [Mitel Networks Corporation], MT8870DC Datasheet
MT8870DC
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MT8870DC Summary of contents
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... Dial Tone Filter OSC1 2 ISO -CMOS MT8870DE/DE-1 MT8870DC/DC-1 MT8870DS/DS-1 MT8870DN/DN-1 MT8870DT/DT-1 Description The MT8870D/MT8870D complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; ...
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MT8870D/MT8870D IN IN VRef 5 14 INH 13 PWDN 6 12 OSC1 7 11 OSC2 8 10 VSS 9 18 PIN CERDIP/PLASTIC DIP/SOIC Pin Description Pin # Name ...
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Functional Description The MT8870D/MT8870D-1 monolithic receiver offers small size, low power consumption and high performance. Its architecture consists of a bandsplit filter section, which separates the high and low group tones, followed by a digital counting section which verifies the ...
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MT8870D/MT8870D-1 condition is maintained (ESt remains high) for the validation period ( reaches the threshold GTP the steering logic to register the tone pair, TSt latching its corresponding 4-bit code (see Table 1) into ...
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Power-down and Inhibit Mode A logic high applied to pin 6 (PWDN) will power down the device to minimize the power consumption in a standby mode. It stops the oscillator and the functions of the filters. Inhibit mode is enabled ...
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MT8870D/MT8870D-1 Applications RECEIVER SYSTEM FOR BRITISH TELECOM SPEC POR 1151 The circuit shown in Fig. 9 illustrates the use of MT8870D-1 device in a typical receiver system. BT Spec defines the input signals less than -34 dBm as the non-operate ...
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Absolute Maximum Ratings Parameter 1 DC Power Supply Voltage 2 Voltage on any pin 3 Current at any pin (other than supply) 4 Storage temperature 5 Package power dissipation † Exceeding these values may cause permanent damage. Functional operation under ...
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MT8870D/MT8870D-1 Operating Characteristics - V Gain Setting Amplifier Characteristics 1 Input leakage current 2 Input resistance 3 Input offset voltage 4 Power supply rejection 5 Common mode rejection 6 DC open loop voltage gain 7 Unity gain bandwidth 8 Output ...
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MT8870D-1 AC Electrical Characteristics Characteristics Valid input signal levels (each 1 tone of composite signal) 2 Input Signal Level Reject 3 Negative twist accept 4 Positive twist accept 5 Frequency deviation accept 6 Frequency deviation reject 7 Third zone tolerance ...
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MT8870D/MT8870D-1 AC Electrical Characteristics Characteristics 1 Tone present detect time 2 Tone absent detect time Tone duration accept Tone duration reject Interdigit pause accept 6 Interdigit pause reject 7 Propagation delay ...
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A EVENTS t REC V in ESt St/ DECODED TONE # (n- StD TOE EXPLANATION OF EVENTS A) TONE BURSTS DETECTED, TONE DURATION INVALID, OUTPUTS NOT UPDATED. B) TONE #n DETECTED, TONE DURATION VALID, TONE DECODED ...
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MT8870D/MT8870D-1 NOTES: 4-22 2 ISO -CMOS ...