MAX1139MEEE+T

Analog To Digital Converters (ADC) Overview

The MAX1139MEEE+T is a low-power, 10-bit analog-to-digital converter (ADC) featuring 12 analog input channels. It operates from a single supply of 2.7V to 3.6V and includes an internal 2.048V voltage reference. The device supports sampling rates up to 94.4ksps with a typical supply current of 670µA. It utilizes an I²C-compatible 2-wire serial interface supporting data rates up to 1.7MHz in high-speed mode. The ADC employs successive-approximation conversion techniques and features software-configurable unipolar or bipolar input ranges.

Analog To Digital Converters (ADC) Feature Summary

• Internal track/hold circuitry with fully differential analog inputs
• Integrated internal voltage reference and clock generation
• I²C-compatible 2-wire serial interface with high-speed mode support
• Software-selectable channel scan mode with internal FIFO

Analog To Digital Converters (ADC) Applications

• Hand-held portable instruments
• Medical instrumentation
• Battery-powered test equipment
• Solar-powered remote systems
• Received-signal-strength indicators

Analog To Digital Converters (ADC) Procurement Notes

Verify the component authenticity by checking for the lead-free/RoHS-compliant marking indicated by the plus suffix. Confirm the package type matches the 16-pin QSOP specification. Ensure the operating temperature range requirements align with the -40°C to +85°C rating. Cross-reference the factory-programmed slave address 0110101 for proper bus configuration.

Analog To Digital Converters (ADC) Selection Notes

Select this part when a 10-bit resolution with 12 channels is required for battery-operated applications. Choose this model over the MAX1138 if the system operates on a 2.7V to 3.6V supply rather than 4.5V to 5.5V. Consider the internal 2.048V reference suitability for the specific signal range. Verify that the I²C interface speed requirements are met by the available master controller capabilities.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1136–MAX1139 family of low-power, multichannel ADCs. It shares pin compatibility and functional similarities with the MAX1136, MAX1137, and MAX1138 variants. These devices differ primarily in supply voltage requirements, number of input channels, and internal reference voltage values. The family is designed for general-purpose data acquisition tasks requiring low power consumption.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives include the MAX1136, MAX1137, and MAX1138 within the same series. For higher resolution requirements, consider the MAX1236–MAX1239 family. For lower resolution needs, the MAX1036–MAX1039 family offers compatible pinouts. Verify supply voltage and reference voltage differences before substitution.