AS8500-ASOU

ADCs/DACs - Special Purpose Overview

The AS8500-ASOU is a low-power data acquisition system designed for measuring small signals from shunt resistors and thermocouples. It operates on a single +5V supply with a maximum power consumption of 15 mW. The device features four analog inputs, including two differential channels, and includes an internal programmable gain amplifier (PGA) with gains of 6, 24, 50, and 100. It provides 16-bit resolution at a maximum sampling frequency of 16 kHz. Key specifications include an input noise density of 35 nV/√Hz, offset voltage better than 0.5 µV, and an operating temperature range of -40°C to +125°C.

ADCs/DACs - Special Purpose Feature Summary

• 16-bit resolution with PGA gains of 6, 24, 50, and 100
• Low power consumption of 15 mW on a single +5V supply
• Internal programmable current sources for sensor excitation
• Active wake-up mode with digital comparator functionality

ADCs/DACs - Special Purpose Applications

• Battery management systems for automotive applications
• High-precision voltage and current measurement
• Thermocouple and RTD precision temperature measurement
• mV/µV-meter instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'ASOU' against the manufacturer's ordering information to confirm package type and tape/reel configuration. Ensure compatibility with the SOIC-16 footprint and check for any regional compliance certifications required for automotive-grade components.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high accuracy in low-level signal measurement. The PGA gain of 24 is optimized for linearity and speed. For extended temperature ranges (-40°C to +125°C), note that accuracy specifications may vary compared to the 0°C to +85°C range. Consider the internal temperature sensor for compensation if high absolute accuracy is critical.

ADCs/DACs - Special Purpose Part Context

The AS8500 is part of a specialized interface family from ams-OSRAM USA INC., formerly austriamicrosystems. It serves as a front-end data acquisition system, often paired with microcontrollers via its 3-wire serial interface. The AS8500-ASOU variant specifically denotes the commercial grade version in the SOIC-16 package.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult the manufacturer's official cross-reference tools or datasheet revision history for potential obsolescence notices or recommended upgrades.