MAX174AEWI

Analog To Digital Converters (ADC) Overview

The MAX174AEWI+ is a 12-bit successive-approximation analog-to-digital converter (ADC) in a 28-pin SOIC package. It integrates an on-chip clock and a precision buried zener voltage reference with a nominal output of 10V. The device operates with a single +5V digital supply and dual analog supplies ranging from ±12V to ±15V. It supports unipolar input ranges of 0 to +10V or 0 to +20V, and bipolar ranges of ±5V or ±10V via pin strapping. The maximum conversion time is 8μs, with a power dissipation of 150mW at ±15V supplies.

Analog To Digital Converters (ADC) Feature Summary

• Monolithic BiCMOS construction for low power consumption
• Integrated high-precision internal voltage reference
• Standard microprocessor interface architecture
• Configurable analog input ranges

Analog To Digital Converters (ADC) Applications

• Digital signal processing
• High-accuracy process control
• High-speed data acquisition
• Electro-mechanical systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range of -40°C to +85°C. Confirm the 'WI' designation corresponds to the 28-SOIC package. Ensure the '+' suffix confirms RoHS compliance. Cross-reference the manufacturer's current production status as legacy parts may have limited availability.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a complete 12-bit ADC solution with integrated reference and clock is required. The MAX174AEWI+ is suitable for applications needing 8μs conversion speed and standard parallel bus interfacing. Consider the ±12V or ±15V supply requirements and the specific input range configuration needed for the analog signal.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX174/MX574A/MX674A family of industry-standard 12-bit ADCs. While sharing the same core architecture and pinout, the MAX174 variant offers the fastest conversion speed among the group. The AE grade specifies tighter linearity and offset error specifications compared to lower grades within the series.

Analog To Digital Converters (ADC) Replacement Considerations

MX574AKEWI+

Analog To Digital Converters (ADC) FAQ

How are the analog input ranges configured?

The input ranges are set using pin strapping. Connecting the appropriate pins allows selection between 0 to +10V, 0 to +20V, ±5V, or ±10V ranges.

What is the function of the BIPOFF pin?

The BIPOFF pin is used for bipolar offset adjustment. For bipolar operation, it is typically connected to the REFOUT pin through a fixed resistor.

Can the internal reference drive external loads?

Yes, the internal reference can source up to 2mA in addition to the REFIN and BIPOFF inputs when operating with ±15V supplies.