AK9255NK

Analog To Digital Converters (ADC) Overview

The AK9255NK is a dual-channel, 16-bit ZDS-NS (Zero latency Delta Sigma with Noise Suppression) analog-to-digital converter manufactured by Asahi Kasei Microdevices. It operates at a sampling rate of 0.54 MSPS and supports differential or pseudo-differential inputs. The device features an integrated digital filter for noise suppression, achieving a typical signal-to-noise ratio of 86 dBFS in NS Setting 1. Power consumption is specified at 2.6 mA for VDD and 0.3 mA for DRVDD at 3.3V. It functions within a supply voltage range of 3.0V to 3.6V and operates across a temperature range of -40°C to 105°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling architecture using ZDS-NS technology
• Integrated noise suppression function with built-in digital averaging filter
• Typical INL of ±3.0 LSB without missing codes
• Small 16-pin QFN package measuring 3mm x 3mm

Analog To Digital Converters (ADC) Applications

• Motor control position measurement using SinCos encoders
• Three-phase power controls
• Programmable logic controllers
• Power quality measurement
• Industrial automation systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the current manufacturing status before procurement, as distributor records indicate this specific part number may be discontinued. Confirm that the required packaging format matches available inventory options. Ensure compliance with export regulations regarding the product's classification. Review the manufacturer's latest documentation for any updates on environmental compliance or RoHS status prior to finalizing orders.

Analog To Digital Converters (ADC) Selection Notes

Select the AK9255NK when high accuracy and fast response are required simultaneously. The ZDS-NS architecture reduces input capacitance compared to standard SAR ADCs, lowering the buffer load on the input stage. Choose this component if system design requires internal oversampling and noise averaging to improve overall noise characteristics without external filtering components.

Analog To Digital Converters (ADC) Part Context

The AK9255A/56A series represents AKM's integration of Zero latency Delta Sigma technology. This approach combines the ultrafast response of SAR converters with the high accuracy typically associated with delta-sigma converters. The internal execution of oversampling and digital averaging allows for effective analog input signal noise suppression, contributing to improved system-level noise performance.

Analog To Digital Converters (ADC) Replacement Considerations

The AK9256A is a related variant within the same family offering 14-bit resolution and a higher sampling rate of 0.62 MSPS. Verify pin compatibility and software configuration requirements when considering cross-model substitution within the AK9255/56 series.

Analog To Digital Converters (ADC) FAQ

What is the ZDS-NS technology used in the AK9255NK?

ZDS-NS stands for Zero latency Delta Sigma with Noise Suppression Function. It realizes ultrafast response similar to SAR converters while maintaining high accuracy like delta-sigma converters through internal oversampling and digital averaging.

How does the noise suppression function work?

The oversampling process is executed inside the IC, and the averaging process is carried out with a built-in digital filter. This suppresses analog input signal noise and contributes to improving the noise characteristics of the system.

What are the power supply requirements for the AK9255NK?

The device requires two power supplies: VDD and DRVDD. Both must be within the range of 3.0V to 3.6V.