QT1103 View Datasheet(PDF) - Quantum Research Group
Part Name
Description
Manufacturer
QT1103 Datasheet PDF : 22 Pages
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4 Specifications
4.1 Absolute Maximum Specifications
Operating temperature, Ta. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o ~ +85oC
Storage temp, Ts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50o ~ +125oC
Vdd. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 ~ +6.0V
Max continuous pin current, any control or drive pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Short circuit duration to ground or Vdd, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Voltage forced onto any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V ~ (Vdd + 0.3) Volts
4.2 Recommended Operating Conditions
Operating temperature, Ta. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o ~ +85oC
VDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.8 ~ +5.0V
Short-term supply ripple+noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV/s
Long-term supply stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100mV
Cs range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [100nF
Cx range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 ~ 50pF
4.3 AC Specifications
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 4.7nF; circuit of Figure 1.1
Parameter Description
Min
Typ
Max
Trc
Recalibration time
150
Fc
Burst center frequency
132
Fm
Burst modulation, percent
15
Tpc
Sample pulse duration
2
Tsu
Tbd
Tdtf
Tdtn
Tdtl
Tdrf
Tdrn
Tres
bps
Startup time from cold start
Burst duration
Response time - Fast mode
Response time - Normal mode
Response time - LP mode
Release time - Fast mode
Release time - Normal mode
External reset low pulse width
Serial communications speed
1
8,000
260
2.5
14
28
110
10
14
38,400
Units
ms
kHz
%
µs
ms
ms
ms
ms
ms
ms
ms
µs
baud
Notes
Total deviation
Pulses appear 33 percent longer
when viewed on an oscilloscope.
All three bursts
110ms LP setting
End of touch
End of touch
4.4 DC Specifications
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 4.7nF, Ta = recommended range; circuit of Figure 1.1 unless noted
Parameter Description
Min
Typ
Max
Units Notes
Iddn
Average supply current,
normal mode*
Iddl
Average supply current,
LP mode*
4.2
2.5
1.8
1.4
22
15
8
mA @ VDD = 5.0
@ VDD = 4.0
@ VDD = 3.3
@ VDD = 2.8
µA
@ VDD = 3.3V; 190ms LP mode
@ VDD = 2.8V; 190ms LP mode
Average supply current, LP
48
mode
34
µA
@ VDD = 3.3V
@ VDD = 2.8V
Average supply current, LP
mode, keys on bursts A and B
only
36
24
µA
@ VDD = 3.3V
@ VDD = 2.8V
Average supply current,
20
LP mode, keys on burst B only
14
µA
@ VDD = 3.3V
@ VDD = 2.8V
Vdds
Average supply turn-on slope
100
V/s
Vil
Low input logic level
0.7
V
Vhl
High input logic level
3.5
V
Vol
Low output voltage
0.5
V
7mA sink
Voh
High output voltage
Vdd-0.5
V
2.5mA source
Iil
Input leakage current
±1
µA
Ar
Acquisition resolution
*No spread spectrum circuit
8
bits
Lq
13
QT1103_3R0.03_0607
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