qt160 Quantum Research Group, qt160 Datasheet - Page 8

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qt160

Manufacturer Part Number
qt160
Description
6 Key Charge-transfer Qtouch? Sensor Ic
Manufacturer
Quantum Research Group
Datasheet

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4.1 ABSOLUTE MAXIMUM SPECIFICATIONS
Operating temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . as designated by suffix
Storage temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
V
Max continuous pin current, any control or drive pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Short circuit duration to ground, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Short circuit duration to V
Voltage forced onto any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (Vdd + 0.6) Volts
4.2 RECOMMENDED OPERATING CONDITIONS
V
Operating temperature range, 4.5V - 5.5V (QT160-AS, QT161-AS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 - +105C
Operating temperature range, 3.0V - 4.5V (QT160-AS, QT161-AS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 - +85C
Operating temperature range (QT160-D, QT161-D). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 - +70C
Operating frequency, 4.5V - 5.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 20MHz
Operating frequency, 3.0V - 5.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 10MHz
Short-term supply ripple+noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV/s
Long-term supply stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100mV
Cs value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1nF to 200nF
Cx value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 100pF
4.3 AC SPECIFICATIONS
4.4 DC SPECIFICATIONS
Vdd = 5.0V, Cs = 39nF, Cx = 5pF, Fosc = 10MHz, Ta = recommended range, unless otherwise noted
lQ
Parameter
Parameter
DD
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to +7.0V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.0 to 5.5V
T
V
V
V
V
T
T
T
T
N
I
T
V
A
BLMR
T
I
DD
DDS
OH
HL
OL
IL
RC
PC
BS
PT
BL
BL
IL
R
R
Supply current
Supply turn-on slope
Low input logic level
High input logic level
Low output voltage
High output voltage
Input leakage current
Acquisition resolution
Recalibration time
Charge duration
Transfer duration
Burst spacing interval
Burst duration, each channel
Burst length, each channel
Allowable burst duration range
Response time
Description
Description
DD
, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Vdd = 5.0, Ta = recommended
Vdd-0.7
Min
100
Min
2
0.1
Typ
2.5
1,000
10
Typ
1.2
1.6
33
99
3
8
Max
0.7
0.6
±1
14
Max
8
330
5.5
, Cx = 5pF, Cs = 39nF, Fosc = 10MHz
Units
counts
Units
mA
V/s
bits
µA
V
V
V
V
ms
ms
ms
ms
ms
µs
µs
Req’d for startup, w/o reset circuit
OPT1, OPT2
OPT1, OPT2
OUTn, 4mA sink
OUTn, 1mA source
OPT1, OPT2
Before all timings degrade
Including detection integrator
QT160/161 1.07/0904
Notes
Notes
O
C to +125
O
C

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