mxb7846 Maxim Integrated Products, Inc., mxb7846 Datasheet - Page 5

• Manufacturer Part Number: mxb7846
• Description: Mxb7846 2.375v To 5.25v, 4-wire Touch-screen Controller With Internal Reference And Temperature Sensor
• Manufacturer: Maxim Integrated Products, Inc.

with Internal Reference and Temperature Sensor
(V
otherwise noted.)
DD
2.375V to 5.25V, 4-Wire Touch-Screen Controller
-0.1
-0.2
-0.3
-0.4
-0.5
-1.0
0.5
0.4
0.3
0.2
0.1
1.0
0.5
SWITCH ON-RESISTANCE vs. SUPPLY VOLTAGE
14
12
10
0
0
8
6
4
2
0
= 2.7V, V
-40
2.5
0
(X+, Y+ : +V
500
-25
3.0
vs. DIGITAL OUTPUT CODE
CHANGE IN OFFSET ERROR
INTEGRAL NONLINEARITY
1000 1500
-10
REF
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
DD
3.5
= 2.5V
OUTPUT CODE
5
Y-
TO PIN; X-, Y- : TO GND)
X-
_______________________________________________________________________________________
2000 2500
20
4.0
X+
Y+
EXTERNAL
35
4.5
3000
50
3500
5.0
65
, f
DCLK
4000
80
5.5
= 2MHz, f
-1.0
-0.2
-0.4
-0.6
-0.8
1.0
0.8
0.6
0.4
0.2
12
11
10
-1
-2
-3
0
9
8
7
6
5
4
3
2
1
0
3
2
1
0
SWITCH ON-RESISTANCE vs. TEMPERATURE
(X+, Y+ : +V
-40
2.5
0
SAMPLE
500
-25
DIFFERENTIAL NONLINEARITY
3.0
vs. DIGITAL OUTPUT CODE
1000 1500
CHANGE IN GAIN ERROR
-10
vs. SUPPLY VOLTAGE
DD
= 125kHz, C
SUPPLY VOLTAGE (V)
X-
Y-
TEMPERATURE (°C)
3.5
TO PIN; X-, Y- : PIN TO GND)
OUTPUT CODE
5
2000 2500
20
4.0
Typical Operating Characteristics
35
4.5
LOAD
3000
50
Y+
X+
3500
5.0
65
= 50pF, 0.1µF capacitor at REF, T
4000
80
5.5
-0.5
-1.0
-1.5
-2.0
-0.5
-1.0
-1.5
-2.0
1.0
0.5
2.6
2.5
2.4
2.3
2.2
2.1
2.0
2.0
1.5
1.0
0.5
0
0
-40
2.5
2.0
C
-25
L
2.5
= 0.1µf
3.0
CHANGE IN OFFSET ERROR
CHANGE IN GAIN ERROR
-10
INTERNAL REFERENCE
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
vs. TEMPERATURE
3.0
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
3.5
5
3.5
20
4.0
A
4.0
= +25°C, unless
35
4.5
4.5
50
5.0
65
5.0
80
5.5
5.5
5