AK4186 Datasheet, PDF (5/33 Pages) Asahi Kasei Microsystems – Low Power Touch Screen Controller with I2C Interface

[AK4186]
ANALOG CHARACTERISTICS
(Ta = -40°C to 85°C, VDD = 1.8V, I²C bus SCL=400kHz)
Parameter
min
typ
max
Units
A/D Converter
Resolution
-
12
-
Bits
No Missing Codes
11
12
-
Bits
Integral Nonlinearity (INL) Error
-
-
±2
LSB
Differential Nonlinearity (DNL) Error
-2
±1
+3
LSB
Offset Error
AK4186ECB
-
-
±6
LSB
AK4186EN
-4
-
+8
LSB
Gain Error
AK4186ECB
-
-
±4
LSB
AK4186EN
-4.5
-
+3.5
LSB
Throughput Rate
-
-
22.2
kHz
Touch Panel Drivers Switch On-Resistance
XP, YP
-
6
-
Ω
XN, YN
-
6
-
Ω
PENIRQ Pull Up Resistor R_IRQ
-
50
-
kΩ
Auxiliary IN Input
Input Voltage Range
0
-
VDD
V
Power Supply Current
Normal Mode (Single mode, PD0 bit = “0”)
VDD=1.8V
-
(Note 4) _VDD=3.6V
-
60
-
μA
-
220
μA
Normal Mode (Sequence mode, 10kHz equal rate) (Note 5)
-
25
-
μA
Full Power Down (SDA = SCL = “H”)
-
0
3
μA
Note 4. Continuous ADC data read (fs = 22.2kHz). Expect for Power Consumption of Touch Panel driver.
Note 5. COUNT bit = “1”, INTERVAL2-0 bits = 000. Write command cycle = 1kHz. Expect for Power Consumption
of Touch Panel driver.
DC CHARACTERISTTICS (Logic I/O)
(Ta=-40°C to 85°C, VDD =1.6V to 3.6V)
Parameter
Symbol min
typ
“H” level input voltage
VIH 0.8xVDD
-
“L” level input voltage
VIL
-
-
Input Leakage Current
IILK
-10
-
“H” level output voltage (PENIRQN pin @ Iout = -250μA) VOH VDD-0.3
-
“L” level output voltage (PENIRQN pin @ Iout = 250μA)
(SDA pin @ Iout = 3mA)
VOL
-
-
Tri-state Leakage Current (Note 6)
All pins expect for XP, YP, XN, YN pins
XP, YP, XN, YN pins
IOLK
-10
-10
Note 6. Expect for TEST pin. TEST pin has internal pull-down device, nominally 100kΩ.
max
-
0.2xVDD
10
-
0.3
10
10
Units
V
V
μA
V
V
μA
μA
MS1068-E-04
-5-
2011/03