The MT8880 is a monolithic DTMF transceiver with call progress filter. It is fabricated in Mitel?s ISO2- CMOS technology, which provides low power dissipation and high reliability. The DTMF receiver is based upon the industry standard MT8870 monolithic DTMF receiver; the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones. A standard microprocessor bus is provided and is directly compatible with 6800 series microprocessors.
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The MT8880 is a monolithic DTMF transceiver with call progress filter. It is fabricated in Mitel?s ISO2- CMOS technology, which provides low power dissipation and high reliability. The DTMF receiver is based upon the industry standard MT8870 monolithic DTMF receiver; the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones. A standard microprocessor bus is provided and is directly compatible with 6800 series microprocessors.
Features:-
? Complete DTMF transmitter/receiver
? Central office quality
? Low power consumption
? Microprocessor port
? Adjustable guard time
? Automatic tone burst mode
? Call progress mode
Specification:-
| Symbol | Parameter | Min | Max | Units |
| VDD | DC Power Supply Voltage | 6 | V | |
| VI | Voltage on any pin | VSS-0.3 | VDD+0.3 | V |
| II | Current at any pin (other than supply) | 10 | m A | |
| TSTG | Storage temperature | -65 | 150 | ?C |
| PD | Package power dissipation | 1000 | m W |
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Operating voltage | 2.5 3.0V |
Pixel Resolution | 0.3MP |
Photosensitive array | 640 x 480 |
Optical Size | 1.6 inch |
Angel of view | 67 degrees |
Maximum Frame Rate | 30fps VGA |
Sensitivity | 1.3V/(Lux-sec) |
Dormancy | Less than 20A |
Power consumption | 60mW/15fpsVGA YUV |
Temperature operation Range | -30 C ~ 70 C |
Pixel area | 3.6 x 3.6 m |
Signal to noise ratio (SNR) | 46 dB |
Dynamic range | 52 dB |
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