MAX189ACWE

Analog To Digital Converters (ADC) Overview

The MAX189ACWE+ is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and accepts a 0 to VREF analog input range. The device features an internal track/hold circuit with a 75ksps throughput rate and utilizes a successive-approximation register architecture. It communicates via a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The part requires an external reference voltage applied to the REF pin and is housed in a 16-pin Wide SO package.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with ±½ LSB integral nonlinearity
• Internal track/hold circuitry supporting 75kHz sampling rate
• Single +5V operation with low power consumption
• 3-wire serial interface compatible with standard digital protocols

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Remote digital signal processing applications
• Isolated data acquisition circuits
• High-accuracy process control equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'ACWE+' matches the required temperature grade and packaging format. Check for RoHS compliance documentation as indicated in official datasheets. Ensure the external reference voltage requirements are met within the specified input range for accurate performance.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 75ksps throughput are sufficient for the application. Choose the MAX189 variant over the MAX187 if an external precision reference is preferred or required for system calibration. Ensure the host microcontroller supports the necessary 3-wire serial interface timing and clock rates up to 5MHz for optimal data retrieval.

Analog To Digital Converters (ADC) Part Context

The MAX189ACWE+ belongs to the MAX187/MAX189 family of low-power serial ADCs. This series is designed for space-constrained and battery-operated applications requiring moderate speed and accuracy. The AC suffix denotes the commercial temperature range, while the WE+ indicates the 16-pin wide SOIC package with lead-free construction.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes include other parts from the MAX187/MAX189 family such as the MAX189BCWE+. Verify that any replacement maintains the same 12-bit resolution, 75ksps throughput, and 16-pin SOIC footprint. Ensure compatibility with the existing serial interface protocol and external reference voltage requirements.