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QT100 Datasheet(PDF) 7 Page - Quantum Research Group

Part # QT100
Description  CHARGE-TRANSFER QTOUCH??IC
Download  12 Pages
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Manufacturer  QUANTUM [Quantum Research Group]
Direct Link  http://www.qprox.com
Logo QUANTUM - Quantum Research Group

QT100 Datasheet(HTML) 7 Page - Quantum Research Group

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4 Specifications
4.1 Absolute Maximum Specifications
Operating temp....................................................................................... -40ºC to +85ºC
Storage temp....................................................................................... -55OC to +125OC
VDD.................................................................................................. -0.5 to +5.25V
Max continuous pin current, any control or drive pin.............................................................. ±20mA
Short circuit duration to VSS, 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.................................................................................................... +2.0 to 5.0V
Short-term supply ripple+noise................................................................................. ±5mV
Long-term supply stability.................................................................................... ±100mV
Cs value............................................................................................... 2nF to 50nF
Cx value.................................................................................................. 5 to 20pF
4.3 AC Specifications
VDD = 3.0V, Cs = 10nF, Cx = 5pF, Ta = recommended range, unless otherwise noted
µs
15
Heartbeat pulse width
THB
ms
100
Response time
TR
Cs and Cx dependent
ms
Burst length
TBL
Increases with reducing VDD
ms
85
Time between end of burst and
start of the next (LP mode)
TG2
ms
1
Time between end of burst and
start of the next (Fast mode)
TG1
±7.5% spread spectrum variation
µs
2
Transfer duration
TPT
±7.5% spread spectrum variation
µs
2
Charge duration
TPC
Cs, Cx dependent
ms
250
Recalibration time
TRC
Notes
Units
Max
Typ
Min
Description
Parameter
4.4 Signal Processing
(At 3V) Will vary in SYNC mode and with
VDD
secs
80
Max on-duration
ms/level
1,000
Negative drift compensation rate
ms/level
2,000
Positive drift compensation rate
samples
4
Consensus filter length
counts
2
Hysteresis
counts
10
Threshold differential
Notes
Units
Max
Typ
Min
Description
lQ
7
QT100_3R0.08_0307


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