ak4180 AKM Semiconductor, Inc., ak4180 Datasheet - Page 5

• Manufacturer Part Number: ak4180
• Description: Touch Screen Controller
• Manufacturer: AKM Semiconductor, Inc.

[ASAHI KASEI]
Ta=-20 C to 70 C,VCC=2.7V, Vref=2.5V, fs=125kHz, MCLK=16*fs
Parameter
ADC for Touch Screen
Resolution
No Missing Code
Integral Linearity Error
Analog Input Voltage Range
Offset Error
Gain Error
Touch Panel Driver
PSRR
Reference Output
Internal Reference Voltage@VCC=3.0V, 20 C
Load Capacitance
Reference Input
Input Voltage Range
Input Impedance
Battery Monitor
Input Voltage Range
Input Impedance (Battery Measure Mode)
Accuracy *)
Temperature Measurement
Temperature Range
Resolution **)
Accuracy ***)
Power Supply Current
Normal Mode (Internal VREF OFF)
Normal Mode (Internal VREF ON)
Full Power Down
*) Accuracy is the difference between the output code when 5 volts is input to the VBAT pin and the “ideal” code at 1.25 volts.
**) “ideal” value derived from theory
**) Accuracy is defined as the difference between the voltage measured by two current sources, and the ideal voltage derived from
theory at specific temperatures.
<MS0195-E-01>
X+, Y+, RL=300
X-, Y-, RL=300
Analog Characteristics
5
min
-12
2.4
0.1
-20
10
98
0
0
196
250
520
typ
2.5
1.6
12
12
70
10
5
5
0
3
3
Max
VCC
Vref
2.55
500
800
5.0
20
70
10
0
5
2003/02
[AK4180]
Units
LSB
LSB
LSB
Bits
Bits
k
k
dB
uF
V
V
V
V
%
V
C
C
A
A
A