AK9256ANK

Analog To Digital Converters (ADC) Overview

The AK9256ANK is a dual-channel, 14-bit Analog-to-Digital Converter (ADC) from Asahi Kasei Microdevices. It utilizes Zero latency Delta Sigma with Noise Suppression (ZDS-NS) architecture to achieve a sampling rate of 0.62 MSPS. The device features simultaneous sampling for two differential or pseudo-differential inputs, ensuring precise phase alignment. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 82 dBFS at NS Setting 1 and 85 dBFS at NS Setting 4. It operates on dual power supplies (VDD and DRVDD) ranging from 3.0 V to 3.6 V and functions within an industrial temperature range of -40°C to 105°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel ZDS-NS ADC with 14-bit resolution and 0.62 MSPS sampling rate
• Integrated noise suppression function improving system accuracy
• Typical INL of ±1.0 LSB with no missing codes
• Small 16-pin QFN package (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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'NK' against the manufacturer's current product brief to confirm packaging details and availability status. Ensure compliance with export control regulations and environmental directives such as RoHS before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the AK9256ANK over the AK9255A when a 14-bit resolution is sufficient, as it offers a higher sampling rate of 0.62 MSPS compared to the 0.54 MSPS of the 16-bit variant. Consider the lower input capacitance inherent to the ZDS-NS architecture for reduced buffer load requirements in the analog front-end design.

Analog To Digital Converters (ADC) Part Context

The AK9256ANK belongs to the AK9255A/56A family of industrial AFE ADCs. This series combines the speed of SAR converters with the high accuracy and noise filtering capabilities of delta-sigma converters. The device is designed for applications requiring high-speed data acquisition with strict noise immunity in compact form factors.

Analog To Digital Converters (ADC) Replacement Considerations

The AK9255A is a pin-compatible alternative within the same family, offering 16-bit resolution but with a slightly lower maximum sampling rate of 0.54 MSPS.