MAX111BEWE+T

Analog To Digital Converters (ADC) Overview

The MAX111BEWE+T is a low-cost, 2-channel, ±14-bit serial analog-to-digital converter (ADC) from the MAX110/MAX111 family. It utilizes an internal auto-calibration technique to achieve high resolution without external components. Operating on a single +5V supply, it converts differential signals in the ±1.5V range or single-ended signals in the 0V to +1.5V range. The device features a fast serial interface compatible with SPI, QSPI, and MICROWIRE standards. Key electrical parameters include a typical supply current of 640µA, reducing to 4µA in shutdown mode, and a maximum conversion rate of 50 conversions per second.

Analog To Digital Converters (ADC) Feature Summary

• Internal auto-calibration for offset and gain-error correction under microprocessor control
• Compatible with SPI, QSPI, and MICROWIRE serial interfaces
• Low power consumption with dedicated shutdown modes
• Integrated sigma-delta architecture providing 14-bit resolution plus sign and overrange bits

Analog To Digital Converters (ADC) Applications

• Process Control Systems
• Weigh Scales
• Panel Meters
• Data-Acquisition Systems
• Temperature Measurement

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) compared to commercial variants. Confirm the '+T' designation corresponds to tape-and-reel packaging as specified in the manufacturer's ordering information. Ensure compatibility with single-supply +5V operation requirements for the MAX111 variant.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-supply +5V operation is required, distinguishing it from the dual-supply MAX110. Consider the 16-pin Wide SO package for space-constrained designs. Evaluate the 50Hz/60Hz rejection capability if noise immunity against power-line interference is critical for the application environment.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX110/MAX111 series of low-cost, high-resolution serial ADCs. It shares architectural similarities with other members like the MAX110ACWE+, but differs in supply voltage requirements and input signal ranges. The MAX111 variant is specifically optimized for single-supply applications, whereas the MAX110 supports dual supplies.

Analog To Digital Converters (ADC) Replacement Considerations

MAX111BCWE+T

Analog To Digital Converters (ADC) FAQ

What is the difference between the MAX110 and MAX111 regarding power supply?

The MAX110 operates with ±5V supplies, while the MAX111 operates with a single +5V supply.

How does the device handle input signals exceeding the reference voltage?

An overrange bit (OFL) is provided in the output data to indicate when the input voltage level has exceeded the reference voltage level.

What is the purpose of the RCSEL pin?

The RCSEL pin selects between external clock mode (connected to GND) and internal RC oscillator mode (connected to VDD).