MAX11803 Maxim Integrated Products, MAX11803 Datasheet - Page 12

• Manufacturer Part Number: MAX11803
• Description: (MAX11800 - MAX11803) Ultra-Small Resistive Touch-Screen Controllers
• Manufacturer: Maxim Integrated Products

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Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I
(V
noncontinuous AUX input. SPI = 10MHz and I
Y+ to Y- = 371Ω).)
12
DD
0.40
0.36
0.32
0.28
0.24
0.20
0.16
0.12
0.08
0.04
90
80
70
60
50
40
30
20
10
______________________________________________________________________________________
0
= 1.8V at T
0
-40
0
SUPPLY CURRENT IN POWER-DOWN
DATA TAKEN WITH
RESISTIVE TOUCH
SENSOR
20
AUTONOMOUS MODE
AVERAGE SUPPLY CURRENT
-15
40 60 80 100
-1
-2
-3
-4
4
3
2
1
0
vs. SAMPLING RATE
-40
vs. TEMPERATURE
A
SAMPLING RATE (cps)
TEMPERATURE (NC)
= -40°C to +85°C (T
10
-10
CHANGE IN ADC GAIN
vs. TEMPERATURE
cps = COORDINATES
PER SECOND
120 140
35
TEMPERATURE (NC)
20
160
60
50
180
200
A
85
= -40°C, T
80
2
C = 400kHz, unless otherwise noted. Resistive touch-screen panel (X+ to X- = 608Ω,
2
110
5
4
3
2
1
0
8
7
6
5
4
3
C/SPI Interface
1.6
0
A
X+
X-
= 0°C, T
20
DIRECT CONTINUOUS
INTERRUPT MODE
AVERAGE SUPPLY CURRENT
2.0
40
Y-
vs. SUPPLY VOLTAGE
Y+
SWITCH RESISTANCE
vs. SAMPLING RATE
cps = COORDINATES PER SECOND
SAMPLING RATE (cps)
60
A
2.4
80
= +25°C, and T
V
DD
100
(V)
Typical Operating Characteristics
120
2.8
140
160
3.2
180
A
= +85°C), 12-bit mode, all measurements using
200
3.6
-1
-2
-3
-4
4
3
2
1
0
-40
5
4
3
2
1
0
-10
7
6
5
4
3
2
1
CHANGE IN ADC OFFSET
-40
0
vs. TEMPERATURE
TEMPERATURE (NC)
20
DIRECT EDGE
INTERRUPT MODE
X-
AVERAGE SUPPLY CURRENT
20
40
-15
SWITCH RESISTANCE
vs. SAMPLING RATE
cps = COORDINATES PER SECOND
vs. TEMPERATURE
SAMPLING RATE (cps)
60
TEMPERATURE (NC)
50
Y+
X+
80
10
100
Y-
80
120
35
140
110
160
60
180
200
85