QT110-IG View Datasheet(PDF) - Quantum Research Group
Part Name
Description
Manufacturer
QT110-IG Datasheet PDF : 12 Pages
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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.
Parameter
Description
TRC
Recalibration time
TQ
Charge, transfer duration
TBS
Burst spacing interval
TBL
Burst length
TR
Response time
FP
Piezo drive frequency
TP
Piezo drive duration
TPO
Pulse output width on Out
THB
Heartbeat pulse width
FQ
Burst frequency
Min
Typ
Max
Units
550
ms
2
µs
75
ms
95
ms
0.5
7
ms
129
ms
3.6
4
4.4
kHz
75
ms
75
ms
300
µs
165
kHz
@ 5.0V Vdd
@ 3.3V Vdd
Notes
4.4 SIGNAL PROCESSING
Vdd = 3.0, Cs = 10nF, Rs = 470K, Cx = 10pF, Ta = 20OC, unless otherwise noted.
Description
Threshold differential, high gain
Threshold differential, medium gain
Threshold differential, low gain
Hysteresis
Consensus filter length
Positive drift compensation rate
Negative drift compensation rate
Post-detection recalibration timer duration
Min
Typ
Max
3.1
4.7
6.25
50
4
750
75
10
60
Note 1: Of absolute full scale signal
Note 2: Of signal threshold
Note 3: Strap option.
Units
%
%
%
%
samples
ms/level
ms/level
secs
Notes
Note 1
Note 1
Note 1
Note 2
Note 3
LQ
8
QT110 R1.04/0405
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