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QT110-IS

P1-P3P4-P6P7-P9P10-P12P13-P13
4.1 ABSOLUTE MAXIMUM SPECIFICATIONS
Operating temp ............................................................ as designated by suffix
Storage temp ................................................................... -55
O
C to +125
O
C
V
DD .............................................................................. -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 V
DD, 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 ................................................................ 20mV p-p max
Load capacitance ...................................................................... 0 to 20pF
Cs value .......................................................................... 10nF to 30nF
4.3 AC SPECIFICATIONS Vdd = 3.0, Ta = recommended operating range
µs300Heartbeat pulse widthTHB
ms75Pulse output width on OutTPO
ms75Piezo drive durationTP
kHz4Piezo drive frequencyFP
ms129Response timeTR
ms70.5Burst lengthTBL
ms75Burst spacing intervalTBS
µs2Transfer durationTPT
µs2Charge durationTPC
ms550Recalibration timeTRC
NotesUnitsMaxTypMinDescriptionParameter
4.4 SIGNAL PROCESSING
Note 3secs6010Post-detection recalibration timer duration
ms/level75Negative drift compensation rate
ms/level750Positive drift compensation rate
samples4Consensus filter length
Note 2%50Hysteresis
Note 1%6.25Threshold differential, low gain
Note 1%4.7Threshold differential, medium gain
Note 1%3.1Threshold differential, high gain
NotesUnitsMaxTypMinDescription
Note 1: Of absolute full scale signal
Note 2: Of signal threshold
Note 3: Strap option.
- 10 -
4.5 DC SPECIFICATIONS
Vdd = 3.0V, Cs = 10nF, Cx = 5pF, TA = recommended range, unless otherwise noted
Refer to Figures 4-1 through 4-3pF3Sensitivity - low gainS[3]
Refer to Figures 4-1 through 4-3pF1.5Sensitivity - medium gainS[2]
Refer to Figures 4-1 through 4-3pF1Sensitivity - high gainS[1]
bits14Acquisition resolutionA
R
Resistance from SNS1 to SNS2
✡
500KMin shunt resistanceIX
pF300Load capacitance rangeCX
OPT1, OPT2µA±1Input leakage currentIIL
OUT, 1mA sourceVVdd-0.7High output voltageVOH
OUT, 4mA sinkV0.6Low output voltageVOL
OPT1, OPT2V2.2High input logic levelVHL
OPT1, OPT2V0.8Low input logic levelVIL
Required for proper startupV/s100Supply turn-on slopeVDDS
µA20Supply currentIDD
V5.252.45Supply voltageVDD
NotesUnitsMaxTypMinDescriptionParameter
Preliminary Data: All specifications subject to change.
- 11 -
Figure 4-1 High Gain Sensitivity Figure 4-2 Medium Gain Sensitivity
and Range @ Vdd = 3V and Range @ Vdd = 3V
Cx=30pF Cx=30pF
25pF 25pF
20pF 20pF
10pF 10pF
5pF 5pF
0pF 0pF
Valid operating range Valid operating range
10 20
Cs, nF
0.5
1.0
2.0
3.0
Sensitivity, pF
30
1.5
2.5
10 20
Cs, nF
1.0
2.0
3.0
Sensitivity, pF
30
4.0
Figure 4-3 Low Gain Sensitivity
and Range @ Vdd = 3V
Cx=30pF
25pF
20pF
10pF
5pF
0pF
Valid operating range
10 20
Cs
,
nF
2.0
4.0
6.0
S
ensitivity, pF
30
8.0
0
20
40
60
80
100
120
140
160
180
3 3.5 4 4.5 5
Vss, Volts
Current (microamps)
Cs = 100nF
Figure 4-4 Supply Current vs.
Voltage; Cx = 10pF
47nF
22nF
10nF
0.0150.0080.3810.203Y
0.390.329.9068.128x
BSC0.30.3BSC7.0627.62Aa
0.16-4.064-S1
0.140.123.5563.048S
-0.015-0.381r
0.150.123.813.048R
Typical0.1020.098Typical2.5912.489F
0.0650.0551.6511.397L1
0.0220.0140.5590.355L
-0.01-0.254P
-0.035-0.889Q
BSC0.30.3BSC7.627.62m
Typical0.430.355Typical10.9229.017M
0.3250.38.2557.62A
0.280.247.112 6.096a
NotesMaxMinNotesMaxMin
InchesMillimeters
SYMBOL
Package type: 8pin Dual-In-Line
8º0º8º0ºØ
0.030.2290.7620.381ß
0.010.0070.2490.19e
0.040.021.0160.508E
0.0190.0140.4830.355L
BSC0.050.050BSC1.271.27D
0.010.0040.7620.101h
0.0680.0541.7281.371H
0.1570.153.9883.81Aa
0.2440.2296.1985.816W
0.1960.1894.9794.800M
NotesMaxMinNotesMaxMin
InchesMillimeters
SYMBOL
Package type: 8pin SOIC
- 12 -
P1-P3P4-P6P7-P9P10-P12P13-P13

QT110-IS

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SENSOR IC TOUCH/PROXMTY 1CH8SOIC
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