Datasheet

6
www.ti.com
TSC2000
SBAS257
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= +25°C, +V
DD
= +2.7V, conversion clock = 2MHz, 12-bit mode. Internal V
REF
= +2.5V, unless otherwise noted.
INTERNAL REFERENCE vs TEMPERATURE
20 40–60 100–40 –20 0 60 80
Temperature (°C)
V
REF
(V)
2.55
2.54
2.53
2.52
2.51
2.5
2.49
2.48
2.47
2.46
2.45
V
REF
(V)
1.275
1.27
1.265
1.26
1.255
1.25
1.245
1.24
1.235
1.23
1.225
2.5V Reference
1.25V Reference
INTERNAL REFERENCE vs V
DD
3.3 3.52.5 3.72.7 2.9 3.1
V
DD
(V)
V
REF
(V)
2.55
2.54
2.53
2.52
2.51
2.5
2.49
2.48
2.47
2.46
2.45
V
REF
(V)
1.275
1.27
1.265
1.26
1.255
1.25
1.245
1.24
1.235
1.23
1.225
2.5V Reference
1.25V Reference
INTERNAL OSCILLATOR FREQUENCY
vs TEMPERATURE
0–60 100–40 –20 20
Temperature (°C)
Internal Oscillator Frequency (MHz)
8.4
8.2
8
7.8
7.6
7.4
7.2
40 60 80
TOUCHSCREEN DRIVER ON-RESISTANCE
vs TEMPERATURE
0–60 100–40 –20 20
Temperature (°C)
Resistance (Ω)
8
7.5
7
6.5
6
5.5
5
4.5
4
40 60 80
TOUCH SCREEN DRIVER ON-RESISTANCE vs V
DD
3.12.5 3.72.7 3.3
Supply Voltage (V)
On-Resistance
(Ω)
7
6.9
6.8
6.7
6.6
6.5
6.4
6.3
6.2
6.1
3.52.9
TEMP1 DIODE VOLTAGE vs TEMPERATURE
0–60 100–40 –20 20
Temperature (°C)
Voltage (mV)
800
750
700
650
600
550
500
450
400
40 60 80