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MLX90109 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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MLX90109 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
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3 / 9 page  MLX90109 125kHz RFID Integrated Transceiver MLX90109 Parallel Resonant transceiver Page 3 of 9 Rev 1.4 19-Dec-00 VDD 90109 8 1 2 3 4 7 6 5 C R R par L R R damp VDD L tag See footnote 6 Modulation depth range See footnote 7 68 % C White Noise rejection Schmitt trigger hysteresis 5 3 mV C Sensitivity Vsens 40 3 mV T Filter Gain 28 dB C Filter ripple 3 dB C Filter 3db BW slow SPEED = 1 400 – 3.6k Hz C Filter 3db BW fast SPEED = 0 800 - 7.2k Hz C Output voltage DATA and CLOCK pin Vout Isink = 2.5mA 0.4 V C Start up time MODU = 5V to 1V 8 ms C AM demodulation Delay time MODU-IN ANTENNA-OUT 0 us C AM demodulation Delay time Antenna input to Data output 2kHz square wave modulation Falling edge on antenna MODE= floating (See footnote 8) 25 periods C AM demodulation Delay time Antenna input to Data output 2kHz square wave modulation Rising edge on antenna MODE= floating (See footnote 8) 29 periods C Modulation pulse width deviation Antenna input to Data output Antenna pulse width versus output pulse width. MODE= floating (See footnote 8) -4 0 +4 periods C 7 Modulation on the reader antenna is limited towards maximum modulation depth, to prevent the reader from going into power down. Modudepth = (VPPmax-VPPmin)/( VPPmax+VPPmin) Since Vppmin (Vmodu=4.2V)=1.6V, and Vppmax (Vmodu=0.8V)=8.4, modudepthmax=68%. 8 The data slicer samples every 4 clock periods(=1/Fres), therefore any pulse on the output can be 4 periods off. Test set up Block diagram |
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