MC9328MX1/D ETC, MC9328MX1/D Datasheet - Page 56

• Manufacturer Part Number: MC9328MX1/D
• Description: i.MX Integrated Portable System Processor
• Manufacturer: ETC

Specifications
3.11.2 Gain Calculations
The ideal mapping of input voltage to output digital sample is defined as follows:
In general, the mapping function is:
Where V is input, S is output, G is the slope, and C is the y-intercept.
Nominal Gain G
Nominal Offset C
56
Note that QVDD should be 1800mV.
S = G * V + C
Offset
Offset Error
Gain
Gain Error
DNL
INL
Accuracy (without missing code)
Operating Voltage Range (Pen)
Operating Voltage Range (U)
On-resistance of switches SW[8:1]
0
0
= 65535 / 4800 = 13.65mV
= 65535 / 2 = 32767
-2400
Parameter
Table 23. ASP Touch Panel Controller Electrical Spec
MC9328MX1 Advance Information, Rev. 4
Figure 35. Gain Calculations
-1
65535
Smax
Negative QVDD
Sample
Minimum
–
–
–
–
8
–
8
–
–
C0
32768
13.65
Type
1800
10
–
–
9
0
9
–
–
2400
Maximum
QVDD
QVDD
8199
33%
–
–
–
–
–
–
G0
Freescale Semiconductor
Vi
mV
Ohm
Unit
Bits
Bits
Bits
mV
mV
–
–
–
-1