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AK4161 Datasheet(PDF) 1 Page - Asahi Kasei Microsystems

Part # AK4161
Description  6-channel Capacitive Touch Sensor IC
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4161 Datasheet(HTML) 1 Page - Asahi Kasei Microsystems

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[AK4161]
MS1450-E-02-PB
2014/05
- 1 -
GENERAL DESCRIPTION
The AK4161 is a low operating voltage and low power consumption 6-channel capacitive touch sensor.
Maximum 6 input channels can be configured to LED drive or GPIO. 2 channels out of 6-channel can also
be configured to interrupt output. The AK4161 has a channel independent automatic correct function of
environmental drifts for each sense input. It reduces false detection by continuous calibration of the
internal reference value in the situation when the input capacitance of the touch switch is changed by the
external factors such as hydrothermal conditions. The automatic initial setting function sets the charge
current and charge time according to the size and the shape of a touch switch. Even more, a noise filter
and a false protection filter are integrated. The AK4161 can be configured via serial interfaces, it is
suitable for mobile phones, PCs and home electric applications.
FEATURE
Up to 6 capacitive sensor inputs
Up to 6 general purpose inputs/outputs with PWM control for LED
Selectable 2 interrupt outputs
Automatic initial setting function for the charge current and time
Independent automatic environmental drifts correct function for each sense
terminal
Independent threshold configuration for each sense terminal
Selectable multi touch feature
Integrated Median Averaging Filter
Data Update Stop Function for Noisy Environment
Reset Input pin
I
2C Serial Interface
10 bit SAR A/D Converter with S/H circuit
Integrated Regulator
Low Power Consumption:
Typ. 4.1uA (Sampling rate=512ms, 6ch Sensor input, VDD=3.3V, N1S=20)
Typ. 177uA (Sampling rate=1ms, 6ch Sensor input, VDD=3.3V, N1S=6)
Power Down Current: Typ. 1.2uA
Low Power Operation: VDD = 1.6V ~ 3.6V
Operating Temperature: Ta = -40 ~ 85
C
Package: 16pin QFN (3mm x 3mm, pitch 0.5mm)
I
2C-bus is a trademark of NXP B.V.
AK4161
6-channel Capacitive Touch Sensor IC


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