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MFG:AKM D/C:07+
Part Number: AK4181A
MFG: AKM
D/C: 07+
Description: The AK4181A is a 4-wire touch screen controller that incorporates a 12-bit 125kHz sampling SAR A/D converter.The AK4181...
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AK4181A
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DataSheet
General Description
AK4181A General Description
The AK4181A is a 4-wire touch screen controller that incorporates a 12-bit 125kHz sampling SAR A/D converter.The AK4181A can detect the pressed screen location by performing two A/D conversions. In addition to location, the
AK4181A also measures touch screen pressure.On-chip VREF can be utilized for two analog auxiliary inputs and battery monitoring, with the ability to measure voltages from 0V to 5V.The AK4181A also has an on-chip temperature sensor.
AK4181A Maximum Ratings
GND=0V (Note 1)
Note 1.All voltages with respect to ground.
| Parameter |
Symbol |
min |
max |
Units |
| Power Supplies |
VCC |
−0.3 |
6.0 |
V |
| Input Current, Any Pin Except Supplies |
IIN |
- |
±10 |
mA |
| Input Voltage |
VIN |
-0.3 |
6.0(VCC+0.3) |
V |
| Touch Panel Drive Current |
IOUTDRV |
-0.3 |
50 |
mA |
| Ambient Temperature (powered applied) |
Ta |
-20 |
70 |
°C |
| Storage Temperature |
Tstg |
-65 |
150 |
°C |
AK4181A Features
Sampling Frequency: 125kHz(max)
Pen Pressure Measurement
On-Chip Thermo Sensor
Two Auxiliary Analog Inputs
Direct Battery Measurement
4-wire I/F
On-Chip Voltage Reference (2.5V)
12 bit SAR type A/D Converter with S/H circuit
Low Power Consumption (250A)
Low Voltage Operation (2.7V - 3.6V)
Package 16pin TSSOP
Pen Pressure Measurement
On-Chip Thermo Sensor
Two Auxiliary Analog Inputs
Direct Battery Measurement
4-wire I/F
On-Chip Voltage Reference (2.5V)
12 bit SAR type A/D Converter with S/H circuit
Low Power Consumption (250A)
Low Voltage Operation (2.7V - 3.6V)
Package 16pin TSSOP
AK4181A Connection Diagram
AK4181A
PDF/DataSheet Download
- Datasheet: AK4181A
- File Size: 193084 KB
- Manufacturer: AKM [Asahi Kasei Microsystems]
- Click here to Download
- ·AK402D4-11
- ALPHA [Alpha Industries]
- GaAs MMIC Control FET in SOT 143 DC-2.5 GHz
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- ·AK402D4-24
- Analog Attenuator
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- ·AK402D4-31
- ALPHA [Alpha Industries]
- GaAs MMIC Control FET in SOT 143 DC-2.5 GHz
- 201225 KB
- ·AK40A-024L-015F04SM
- ASTEC
- 15 Watts
- 128066 KB
- ·AK40A-048L-015F04SM
- ASTEC
- 1.5V, 1.8V, 3.3V, 5V Single Output 48V Input, 100W DC-DC Converter
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- ·AK40A-048L-018F04SM
- ASTEC
- 36 Vdc to 75 Vdc Inputs, 100 W
- 128066 KB
- ·AK40A-048L-021F04SM
- ASTEC
- 120 Watts
- 128066 KB
- ·AK40A-048L-025F04SM
- ASTEC
- 36 Vdc to 75 Vdc Inputs, 100 W
- 128066 KB
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