AK4183_06 Datasheet, PDF (1/17 Pages) –

ASAHI KASEI
[AK4183]
AK4183
Features:
„ 12-bit SAR type A/D Converter with S/H circuit
„ Low Voltage Operation (2.5V ∼ 3.6V)
„ I²C bus I/F Supports
(Standard mode 100 KHz, Fast mode 400 KHz)
„ 4-wire resistive touch screen Interface
„ Pen Pressure Measurement
„ Auto Power Down
„ Continuous Read Operation
„ Low Power Consumption (91µA @Fast mode)
„ Package
10pin TMSOP
I²C Touch Screen Controller
General Description:
The AK4183 is a 4-wire resistive touch screen controller
that incorporates SAR type A/D converter.
The AK4183 operates down to 2.5V supply voltage in
order to connect a low voltage drive processor.
The AK4183 can detect the pressed screen location by
performing two A/D conversions. In addition to location,
the AK4183 also measures touch pressure.
As the package size of 10 pin TMSOP is 4.0mm x 2.9mm
this is much smaller than QFN and BGA package.
AK4183 is the best fit for cellular phone, PDA, or other
portable devices.
XP
YP
XN
YN
MS0500-E-00
VREF+ VREF-
AIN+
12bit
AIN- ^ADC
(SAR type)
VCC
Block Diagram
1
Control
Logic
SDA
SCL
CAD0
PENIRQN
PEN
INTERRUPT
GND
2006/04