MAX174BEWI

Analog To Digital Converters (ADC) Overview

The MAX174BEWI+ is a complete 12-bit analog-to-digital converter (ADC) utilizing successive approximation register (SAR) architecture. It integrates an internal buried zener voltage reference and on-chip clock, requiring only decoupling capacitors for operation. The device supports unipolar input ranges of 0 to +10V or 0 to +20V, and bipolar ranges of ±5V or ±10V via pin strapping. It features a parallel interface compatible with 8-, 12-, and 16-bit microprocessor buses. Key electrical specifications include a maximum conversion time of 8μs, 150ns data access time, and 150mW power dissipation at VCC=+15V and VEE=-15V. The part operates within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates high-speed SAR ADC with internal low-drift buried zener reference and clock
• Supports versatile analog input configurations including unipolar and bipolar ranges via pin strapping
• Features three-state digital outputs controlled by standard logic inputs for direct microprocessor interfacing
• Utilizes monolithic BiCMOS construction to minimize power consumption

Analog To Digital Converters (ADC) Applications

• Digital signal processing systems
• High-accuracy process control instrumentation
• High-speed data acquisition modules
• Electro-mechanical system monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature grade (-40°C to +85°C). Confirm the 'WI' package designation corresponds to the Wide SOIC format. Ensure compatibility with required supply voltages (+12V/+15V and -12V/-15V) and logic levels (+5V). Check for RoHS compliance status as indicated in official documentation.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a complete 12-bit ADC solution with integrated reference and clock is required. It is suitable for designs needing flexible input ranges and standard parallel bus interfaces. Consider the 8μs conversion speed for high-throughput applications. Verify that the power supply requirements align with the system's available rails.

Analog To Digital Converters (ADC) Part Context

The MAX174 belongs to a family of industry-standard complete 12-bit ADCs from Analog Devices/Maxim Integrated. It is functionally similar to the MX574A and MX674A, differing primarily in conversion speed and temperature rating. The BEWI variant specifically denotes the extended temperature range and SOIC package configuration within this product line.

Analog To Digital Converters (ADC) Replacement Considerations

MX574A variants offer slower conversion speeds but may share functional similarities. MX674A provides intermediate speed. Direct pin-compatible replacements should be verified against datasheet specifications for accuracy, speed, and power requirements.