Diodes AP389X - Manual (Page 10)

Data Sheet
Enhanced Multi-touch Capacitive Touch Screen Controller AP389X
Apr. 2013 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
10
Electrical Characteristics
DA/AC Characteristics for AFE
T
A
=–40°C to 95°C, V
DD
=3.3V, I
2
C bus frequency=400kHz, unless otherwise noted.
Parameter Symbol Test Condition Min Typ Max Unit
ADC DC Accuracy
Resolution 8 Bits
No Missing Codes Standard/Fast 6 8 Bits
Integral Linearity Error INL Standard/Fast ±2 LSB
Differential Linearity Error
Offset Error
Gain Error
DNL External V
REF
±1
±2
±1
LSB
LSB
LSB
Analog Input
Full-scale Input Span
Absolute Input Range 0
-0.2
V
DD
V
DD
+0.2
V
V
ADC Sampling Dynamics
Throughput Rate 500 ksps
Reference Input
Input Voltage Range 1.8 V
DD
V
Switched-capacitor Integrator
Output Voltage Range 0.3 V
DD
-0.3 V
Integrator Capacitor C
INT
12 pF
Digital Input/Output
Logic Family CMOS
Input High Voltage V
IH
0.7×V
DD
V
DD
+0.3 V
Input Low Voltage V
IL
-0.3 0.3×V
DD
V
Output High Voltage V
OH
0.8×V
DD
V
Output Low Voltage V
OL
0.4 V
Input High Voltage for
P3.6 (GPIO18)
V
IH18
0.7×V
DD18
V
DD18
+0.3 V
Input Low Voltage for P3.6
(GPIO18)
V
IL18
-0.3 0.3×V
DD18
V
Output High Voltage for
P3.6 (GPIO18)
V
OH18
0.8×V
DD18
V
Output Low Voltage for
P3.6 (GPIO18)
V
OL18
0.2×V
DD18
V
Power Supply
Supply Voltage V
DD
Operating voltage 2.8 3.6 V
Quiescent Current
Standard mode:
IOSC=4MHz to
48MHz
TBD mA
Power-down mode 10
A
Temperature Range
Specified Performance -40 95 °C