AK4181A

Description：IC ADC 12BIT 16QFN
Series：-

SKU:dba0be344c0b Category: Analog to Digital Converters (ADC) Brand: Asahi Kasei Microdevices/AKM

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Product introduction

AK4181A is listed in the Analog To Digital Converters (ADC) range at ChipApex. The manufacturer field lists Asahi Kasei Microdevices/AKM. Its product description is IC ADC 12BIT 16QFN. Review the specifications below when checking this part for your BOM.

Analog To Digital Converters (ADC) specifications for AK4181A

Description：IC ADC 12BIT 16QFN
Series：-
Mfr：Asahi Kasei Microdevices/AKM
Package：Tape & Reel (TR)
Number of Bits：-
Sampling Rate (Per Second)：-
Number of Inputs：-
Input Type：-
Data Interface：-
Configuration：-
Ratio - S/H:ADC：-
Number of A/D Converters：-
Architecture：-
Reference Type：-
Voltage - Supply, Analog：-
Voltage - Supply, Digital：-
Features：-
Operating Temperature：-
Package / Case：-
Supplier Device Package：-
Mounting Type：-
Grade：-
Qualification：-

Analog To Digital Converters (ADC) datasheet and documents for AK4181A

AK4181A

Analog To Digital Converters (ADC) Overview

The AK4181A is a touch screen controller featuring a 12-bit SAR A/D converter with a maximum sampling frequency of 125 kHz. It operates on a single power supply ranging from 2.7 V to 3.6 V, consuming as little as 250 µA in normal mode. The device incorporates an internal 2.5 V voltage reference and supports direct battery measurement up to 5 V. It includes two auxiliary analog inputs and an on-chip temperature sensor. Communication is managed via a 4-wire serial interface within a 16-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

12-bit SAR ADC with 125 kHz throughput rate
Integrated 2.5 V internal voltage reference
Direct battery monitoring up to 5 V input
On-chip temperature sensor (-20°C to 70°C range)
Low power consumption (250 µA typical)

Analog To Digital Converters (ADC) Applications

Touch screen position detection
Pen pressure measurement
Battery voltage monitoring
Ambient temperature sensing

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix for the required operating temperature range. The standard VT suffix indicates operation between -20°C and +70°C. Confirm package availability and ensure the host system provides the necessary external pull-up resistor for the PENIRQN pin.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring integrated touch control, battery monitoring, and temperature sensing in a compact footprint. Ensure the source impedance of analog inputs does not exceed 600 ohms without adjusting tracking time. Verify that the host microcontroller supports the required 4-wire serial protocol timing constraints.

Analog To Digital Converters (ADC) Part Context

The AK4181A is part of Asahi Kasei Microdevices' dedicated touch screen controller lineup. It combines analog front-end capabilities with digital control logic to simplify system design by integrating multiple sensors into a single low-power IC.