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Part Number: AK4182A
Description: The AK4182A is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling ...
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AK4182A
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DataSheet
General Description
AK4182A General Description
The AK4182A is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter.
The AK4182A operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCC in order to connect low voltage uP.
The AK4182A can detect the pressed screen location by performing two A/D conversions. In addition to location, the AK4182A also measures touch screen pressure. On-chip VREF can be utilized for analog auxiliary input, temperature measurement and battery monitoring with the ability to measure voltage from 0V to 5V.
The AK4182A also has an on-chip temperature sensor. The AK4182A is available in 16pin QFN thin package (0.75mm in height) and has the operating temperature range of -40°C to +85°C
AK4182A Maximum Ratings
| Parameter | Symbol | Min | max | Units |
| Power Supplies | VCC | -0.3 | 6.0 | V |
| Digital I/O Power Supply | IOVDD | -0.3 | 6.0 | V |
| Input Current (any pins except for supplies) | IIN | ±10 | mA | |
| Input Voltage | VIN | -0.3 | 6.0(VCC+0.3) | V |
| Touch Panel Drive Current | IOUTDRV | 50 | mA | |
| Ambient Temperature (power supplied) | Ta | -40 | 83 | |
| Storage Temperature | Tstg | -65 | 150 |
AK4182A Features
`12 bit SAR type A/D Converter with S/H circuit
`Low Voltage Operation (VCC = 2.2V ∼ 3.6V)
`Low Voltage Digital I/F (1.5V ∼ VCC)
`4-wire I/F
`Sampling Frequency: 125 kHz (max)
`On-Chip Voltage Reference (2.5V)
`Pen Pressure Measurement
`On-Chip Thermo Sensor
`Direct Battery Measurement
`Low Power Consumption (260A)
`Package 16pin QFN
`Low Voltage Operation (VCC = 2.2V ∼ 3.6V)
`Low Voltage Digital I/F (1.5V ∼ VCC)
`4-wire I/F
`Sampling Frequency: 125 kHz (max)
`On-Chip Voltage Reference (2.5V)
`Pen Pressure Measurement
`On-Chip Thermo Sensor
`Direct Battery Measurement
`Low Power Consumption (260A)
`Package 16pin QFN
AK4182A Connection Diagram
AK402D4-11
PDF/DataSheet Download
- Datasheet: AK402D4-11
- File Size: 201225 KB
- Manufacturer: ALPHA [Alpha Industries]
- Click here to Download
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