qt60325 Quantum Research Group, qt60325 Datasheet - Page 39

• Manufacturer Part Number: qt60325
• Description: 32, 48, 64 Key Qmatrix Keypanel Sensor Ics
• Manufacturer: Quantum Research Group

9 Index
A
adc
adjacent key suppression, 8, 27
alert output, 15
application assistance, 5
B
block diagram, 5
boundary equation, 30, 33
burst length, 8, 9, 12, 20, 24, 25, 28, 34
burst spacing, 6, 25, 34
burst timing, 9, 19
C
calibration, 8, 13, 14, 15, 20, 21, 28
charge cancellation, 4, 9, 22
charge gate, 9
charge integrator, 4, 5, 9, 12, 13, 29
charge neutralization, 9
circuit model, 4, 5
cs, 6, 9, 13, 15, 29
cs clamp polarity, 29
csr drive polarity, 15
cx, 4, 6, 8, 9, 21, 25
cz, 5, 6, 7, 8, 9, 13, 14, 21, 28
D
dac test, 28
delta signals, 22
detect integrator, 22, 26
detection integrator, 6, 7, 22
device status, 22
device variations, 5
dimensions, 38
direction commands, 20
drdy’, 17, 18
drift compensation, 6, 7, 8, 13, 15, 20, 23, 24, 26
dwell, 34
E
echo, 18, 19, 24, 28
eeprom checksum, 22, 28
electrostatic shield, 15
emi, 4, 27
error code, 23
error guardbanding, 7
esd protection, 16
F
fast-recalibration, 7, 8
field flow, 4
function summary table, 31
G
gate dwell
get command, 20
ground plane, 15
lQ
subranging, 4, 5
gate dwell, 5, 9, 12, 13, 14, 16, 25
Error byte, 23
dwell, 5, 9, 12, 13, 14, 16, 25
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39
H
hard reset, 8
hysteresis, 6, 25, 26, 32
I
intra-burst pulse spacing, 12, 27, 34
J
jfet, 13
K
key design, 5
key numbering convention, 21
key reporting, 23, 24
L
ladder dac
led, 15
lock reference levels, 7, 17, 28
M
marking, 38
master mode, 16, 18, 19
master-slave mode, 16, 18
matrix configuration, 5
mechanical, 38
miso, 17, 18
mosi, 14, 17, 18, 19
multi-byte responses, 18, 19
N
negative detect integrator, 26
negative detect threshold, 12, 24
negative error band, 27
negative recalibration delay, 6, 26
negative threshold, 5, 6, 8, 12, 25, 26
noise, 12, 15, 16, 24, 26
noise coupling, 12
O
offset, 5, 6, 7, 8, 9, 13, 14, 21, 22, 28
opamp, 13
oscillator, 14, 16
oscilloscope sync, 15
P
pcb layout, 15
peel22cv10az, 13, 35
pld, 9, 12, 13, 14, 16, 35
positive detect threshold, 24
positive drift compensation, 26
positive error band, 27
positive recal delay, 7, 8
positive recalibration delay, 7, 26
positive threshold, 6, 7, 8, 25, 26
power supply, 15
put command, 20
Q
qmbtn, 4, 15, 16
R2R ladder, 5, 7, 9, 14
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QT60xx5 / R1.05