AK4182A Datasheet, PDF (5/18 Pages) Asahi Kasei Microsystems – Touch Screen Controller

ASAHI KASEI
[AK4182A]


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(Ta = -40°C to 85°C, VCC = IOVDD = 2.7V, External Vref = 2.5V, fs = 125KHz, fDCLK = 16 x fs, 12bit mode)
Parameter
min.
typ.
max.
ADC for Touch Screen
Resolution
No Missing Codes
Integral Nonlinearity (INL) Error
Differential Nonlinearity (DNL) Error
Analog Input Voltage Range
Offset Error
Gain Error
Touch Panel Driver
XP, YP, RL = 300Ω
XN, YN, RL = 300Ω
XP Pull Up Register (when pen interrupt enable)
12
11
12
±2
±1
±2
0
Vref
±6
±4
5
5
50
PSRR (10KHz 100mVpp)
70
Reference Output
Internal Reference
Drift
2.44
2.50
2.56
30
Load Capacitance
0.1
Reference Input
Input Voltage Range
VCC
Battery Monitor
Input Voltage Range
Input Impedance (Battery Measure Mode)
Accuracy (Note 2) (֎෦VREF࢖༻࣌)
Accuracy (Note 2) (಺෦VREF࢖༻࣌)
5.0
5
10
±2
±3
Temperature Measurement
Temperature Range
Resolution (Note )
Accuracy (Note )
-40
85
1.6
±3
Power Supply Current
Normal Mode (Internal VREF OFF)
260
500
Normal Mode (Internal VREF ON)
540
800
Full Power Down (ޚ੍ίϚϯυPD1=PD0= “0” ॻ͖ࠐΈ࣌)
0
3
Units
Bits
Bits
LSB
LSB
V
LSB
LSB
Ω
Ω
KΩ
dB
V
ppm/°C

μF
V
V
KΩ
%
%
°C
°C
°C
μA
μA
μA
Note 2.

5VΛVBAT pinʹҹՃͨ͠৔߹ʹ࣮ࡍʹग़ྗ͞ΕΔίʔυͱɺ1.25V͕ೖྗ͞Εͨ৔߹ͷཧ૝ίʔυͱͷࠩ Ͱ͢ɻ
Note 3. ্ࢉܭͷཧ࿦஋Ͱ͢ɻ
Note 4. ಛఆͷԹ౓ԼͰɺ2ͭͷిྲྀʹݯର͢Δ಺෦μΠΦʔυͷిҐࠩͱɺཧ૝తͳ৔߹ͷిҐࠩͱͷࠩͰ͢ɻ


MS0482-J-01




2007/12