QT110A-ISG Atmel, QT110A-ISG Datasheet - Page 9

• Manufacturer Part Number: QT110A-ISG
• Description: IC SENSOR TOUCH/PROX 1CHAN 8SOIC
• Manufacturer: Atmel
• Series: QProx™r
• Type: Capacitiver

Specifications of QT110A-ISG

• Touch Panel Interface: 1, 2-Wire
• Number Of Inputs/keys: 1 Key
• Resolution (bits): 14 b
• Data Interface: Serial
• Voltage Reference: Internal
• Voltage - Supply: 2.5V, 3.3V, 5V
• Current - Supply: 9.5µA ~ 26µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Output Type: Logic
• Interface: 2-Wire
• Input Type: Logic
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Package / Case: -
• Other names: 427-1137-2

4.5 DC SPECIFICATIONS
Vdd = 3.0, Cs = 10nF, Rs = 470K, Cx = 20pF, Gain = High, Ta = 20
LQ
Parameter
V
V
V
S[1]
S[2]
S[3]
V
V
I
V
A
DDS
I
DDL
DD
OH
3.0
2.5
2.0
1.5
1.0
0.5
OL
IL
HL
IL
R
8.0
6.0
4.0
2.0
Guaranteed min Vdd
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
Sensitivity - high gain
Sensitivity - medium gain
Sensitivity - low gain
Figure 4-1 High Gain Sensitivity
Figure 4-3 Low Gain Sensitivity
10
10
Description
and Range @ Vdd = 3V
and Range @ Vdd = 3V
Valid Operating Range
Valid Operating Range
Cs, nF
Cs, nF
20
20
Vdd-0.7
Min
100
2.2
Cx=40pF
Cx=40pF
15pF
10pF
35pF
30pF
20pF
30
20pF
15pF
10pF
35pF
30pF
30
Typ
9.5
1.2
1.8
3.8
26
12
8
9
O
C, unless otherwise noted.
Max
2.45
0.8
0.6
±1
4.0
3.0
2.0
1.0
40
35
30
25
20
15
10
5
Figure 4-4 Typical Supply Current Vs Vdd
2.5
Units
Rs = 470K, Cx = 20pF, Gain = High
bits
V/s
µA
µA
µA
µA
pF
pF
pF
V
V
V
V
V
Figure 4-2 Medium Gain Sensitivity
10
3
@5.0V
@3.3V
@2.5V
Required for proper startup
OPT1, OPT2
OPT1, OPT2
OUT, 4mA sink
OUT, 1mA source
OPT1, OPT2
Cx = 20pF, Cs = 15nF; Figure 4-1
Cx = 20pF, Cs = 15nF; Figure 4-2
Cx = 20pF, Cs = 15nF; Figure 4-3
Valid Operating Range
and Range @ Vdd = 3V
Cs, nF
Cs = 20nF
3.5
QT110A_1R0.01_0408
Vdd
Cs = 10nF
.. .
20
Notes
4
4.5
Cx=40pF
15pF
10pF
35pF
20pF
30pF
30
5