MAX1233_05 Datasheet, PDF (10/45 Pages) Maxim Integrated Products – ±15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller

±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
Typical Operating Characteristics (continued)
(AV_DD = DV_DD = 3V (MAX1233) or 5V (MAX1234), external V_REF = +2.5V (MAX1233), external V_REF = +4.096V (MAX1234), f_SCLK =
10MHz (50% duty cycle), f_SAMPLE = 20ksps, C_LOAD = 50pF, 0.1µF capacitor at REF, T_A = +25°C, unless otherwise noted.)
DAC FULL-SCALE ERROR
vs. ANALOG SUPPLY VOLTAGE
0.75
MAX1233/34 toc21
1.2
0.50
0.8
DAC FULL-SCALE ERROR
vs. TEMPERATURE
0.75
MAX1233/34 toc22
1.2
0.50
0.8
0.25
0.4
0.25
0.4
0
0
0
0
-0.25
-0.4
-0.25
-0.4
-0.50
-0.8
-0.50
-0.8
-0.75
-1.2
2.5 3.0 3.5 4.0 4.5 5.0 5.5
AV_DD (V)
-0.75
-1.2
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
DAC SUPPLY CURRENT
vs. ANALOG SUPPLY VOLTAGE
250
200
150
100
50
0
2.7 3.2 3.7 4.2 4.7 5.2
AV_DD (V)
ADC REFERENCE VOLTAGE
2.550
vs. ANALOG SUPPLY VOLTAGE
MAX1233/34 toc25 _1.020
DAC SUPPLY CURRENT
vs. TEMPERATURE
200
175
150
125
100
75
50
25
0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
ADC REFERENCE VOLTAGE
vs. TEMPERATURE
2.60
MAX1233/34 toc26 _1.250
2.525
2.500
2.475
1.010
2.55
V_REF = 1.0V
1.000
2.50
V_REF = 2.5V
0.990
2.45
V_REF = 1.0V
V_REF = 2.5V
1.125
1.000
0.875
2.450
0.980
2.7 3.2 3.7 4.2 4.7 5.2
AV_DD (V)
2.40
-40 -20
0 20 40 60
TEMPERATURE (°C)
0.750
80
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