AK9231NK

ADCs/DACs - Special Purpose Overview

The AK9231NK is a dual-channel, 12-bit Successive Approximation Register (SAR) Analog-to-Digital Converter manufactured by Asahi Kasei Microdevices. It supports a throughput rate of up to 1MSPS with simultaneous sampling capabilities for two independent channels. The device operates on a single power supply ranging from 2.35V to 5.25V and features an unipolar input range of 0 to VDD. Key performance metrics include a typical Signal-to-(Noise+Distortion) ratio of 71.25dB at a 100kHz input frequency and a maximum Integral Nonlinearity error of ±1.25 LSB. It utilizes a serial interface for data output and is housed in a compact 16-pin QFN package measuring 3mm x 3mm.

ADCs/DACs - Special Purpose Feature Summary

• Dual 12-bit SAR ADC architecture with simultaneous sampling at 1MSPS
• Unipolar analog input range spanning 0V to VDD
• Serial digital interface supporting clock frequencies up to 20MHz
• Operational temperature range from -40°C to +105°C

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Data acquisition modules for sensor interfacing
• Portable instrumentation utilizing low-voltage power supplies

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm RoHS compliance status directly with authorized distributors or the manufacturer prior to procurement. Ensure that the design accounts for the required handling of unused pins as specified in the datasheet to maintain operational integrity.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a dual-channel solution with 12-bit resolution and 1MSPS speed is required within a small footprint. The unipolar input range simplifies front-end circuitry for signals referenced to ground. Verify that the host system can provide the necessary serial clock frequency and that the power supply voltage falls within the 2.35V to 5.25V operating range.

ADCs/DACs - Special Purpose Part Context

The AK9231 belongs to the AK923x series of high-speed SAR ADCs from Asahi Kasei Microdevices. This series includes variants such as the AK9232 and AK9233, which offer different resolutions or channel counts. The AK9231 specifically targets applications needing two synchronized 12-bit conversion channels in a space-constrained environment.

ADCs/DACs - Special Purpose Replacement Considerations

Check for direct pin-compatible alternatives within the AK923x family or other dual-channel SAR ADCs from the same manufacturer. Ensure that any substitute part matches the 12-bit resolution, 1MSPS throughput, and 16-pin QFN package dimensions.