[AK4185]
ANALOG CHARACTERISTICS
(Ta = -40°C to 85°C, VDD = 1.8V, fSCLK = fs x 16=5.0MHz, 12bit mode)
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
-
-
±6
LSB
Gain Error
-
-
±4
LSB
Touch Panel Drivers Switch On-Resistance
XP, YP (R
L
=300Ω)
2.5
5
15
Ω
XN, YN (R
L
=300Ω)
2.5
5
15
Ω
PENIRQ Pull Up Resistor R
IRQ
30
50
70
kΩ
Auxiliary IN Input
Input Voltage Range
0
VDD
V
Temperature Measurement
Temperature Range
-40
85
°C
Resolution (Note
4)
-
1.2
-
°C
Accuracy (Note
5)
-
±3
-
°C
Power Supply Current
Normal Mode (Internal Oscillator mode) (Note
6)
VDD=18V
-
240
-
μA
VDD=3.6V
-
-
550
μA
Normal Mode (Bus clock mode) PD0 = “0” (Note
7)
VDD=1.8V
-
340
-
μA
VDD=3.6V
-
-
800
μA
Full Power Down (when writing control command with PD0 = “0”)
-
0
3
μA
Note 4. “Ideal” value derived from a theory when VDD = 1.8V. This value according to the supplied VDD voltage is
0.6466 x VDD.
Note 5. The typical value has +6°C(typ) offset.
Note 6. The signal of 1kHz, 1.6Vpp (-1dB) is input to the IN/WIPER pin, when COUNT bit = “0”, INTERVAL = 0µs and
command cycle is 50µs. DOUT C
L
= 0pF, the current of touch panel drivers is excluded.
Note 7. The signal of 1kHz, 1.6Vpp (-1dB) is input to the IN/WIPER pin, when Single Mode for external clock
(CONTINUE bit = “0”) and 15 SCLK clock cycles. DOUT C
L
= 0pF, the current of touch panel drivers is
excluded.
DC CHARACTERISTTICS (Logic I/O)
(Ta=-40°C to 85°C, VDD =1.6V to 3.6V)
Parameter
Symbol
min
Digital Input (CSN, SCLK, DIN)
“H” level input voltage
VIH
0.8xVDD
“L” level input voltage
VIL
-
Input Leakage Current.
IILK
-10
Digital Output (DOUT, PENIRQN)
VOH
VDD-0.4
“H” level output voltage (@ Iout = -250μA)
VOL
-
“L” level output voltage (@ Iout = 250μA)
Tri-state Leakage Current
IOLK
All pins except for XP, YP, XN, YN pins
-3
XP, YP, XN, YN pins
-3
typ
-
-
max
-
0.2xVDD
10
-
0.4
3
3
Units
V
V
μA
V
V
μA
μA
-
-
-
-
MS0954-E-05
-5-
2010/10
AKM [ ASAHI KASEI MICROSYSTEMS ]
