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QT110-DG Datasheet(PDF) 8 Page - Quantum Research Group |
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QT110-DG Datasheet(HTML) 8 Page - Quantum Research Group |
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8 / 12 page  4.1 ABSOLUTE MAXIMUM SPECIFICATIONS Operating temp................................................................. as designated by suffix Storage temp......................................................................... -55OC to +125OC VDD.................................................................................... -0.5 to +6.5V Max continuous pin current, any control or drive pin................................................ ±20mA Short circuit duration to ground, any pin........................................................... infinite Short circuit duration to VDD, any pin.............................................................. infinite Voltage forced onto any pin..................................................... -0.6V to (Vdd + 0.6) Volts 4.2 RECOMMENDED OPERATING CONDITIONS VDD..................................................................................... +2.5 to 5.5V Supply ripple+noise..................................................................... 10mV p-p max Max Cx load capacitance........................................................................ 20pF Cs value..................................................................... 10nF ~ 22nF X7R ceramic Rs value................................................................................................... 470K 5% 4.3 AC SPECIFICATIONS Vdd = 3.0, Cs = 10nF, Rs = 470K, Cx = 10pF, Ta = 20OC, unless otherwise noted. kHz 165 Burst frequency FQ µs 300 Heartbeat pulse width THB ms 75 Pulse output width on Out TPO ms 75 Piezo drive duration TP kHz 4.4 4 3.6 Piezo drive frequency FP ms 129 Response time TR ms 7 0.5 Burst length TBL @ 5.0V Vdd @ 3.3V Vdd ms ms 75 95 Burst spacing interval TBS µs 2 Charge, transfer duration TQ ms 550 Recalibration time TRC Notes Units Max Typ Min Description Parameter 4.4 SIGNAL PROCESSING Vdd = 3.0, Cs = 10nF, Rs = 470K, Cx = 10pF, Ta = 20OC, unless otherwise noted. Note 3 secs 60 10 Post-detection recalibration timer duration ms/level 75 Negative drift compensation rate ms/level 750 Positive drift compensation rate samples 4 Consensus filter length Note 2 % 50 Hysteresis Note 1 % 6.25 Threshold differential, low gain Note 1 % 4.7 Threshold differential, medium gain Note 1 % 3.1 Threshold differential, high gain Notes Units Max Typ Min Description Note 1: Of absolute full scale signal Note 2: Of signal threshold Note 3: Strap option. LQ 8 QT110 R1.04/0405 |
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