mxb7843 Maxim Integrated Products, Inc., mxb7843 Datasheet - Page 11

• Manufacturer Part Number: mxb7843
• Description: Mxb7843 2.375v To 5.25v, 4-wire Touch-screen Controller
• Manufacturer: Maxim Integrated Products, Inc.

Figure 2. Equivalent Input Circuit
Figure 3. Single-Ended Y-Coordinate Measurement
GND
______________________________________________________________________________________
Y+
X+
Y-
2.375V to 5.25V, 4-Wire Touch-Screen
GND
IN3
IN4
V
X+
Y+
X-
Y-
DD
PENIRQ
+IN
-IN
12-BIT ADC
REF+
REF-
REF
V
DD
REF
(SHOWN 001
A2–A0
Figure 4. Ratiometric Y-Coordinate Measurement
B
)
(SHOWN HIGH)
SER/DFR
+IN
-IN
CONVERTER
+REF
-REF
GND
Y+
X+
Y-
V
DD
Controller
+IN
-IN
12-BIT ADC
REF+
REF-
11