MAX1138EEE+T

Analog To Digital Converters (ADC) Overview

The MAX1138EEE+T is a low-power, 10-bit analog-to-digital converter (ADC) featuring 12 analog input channels. It operates from a single supply of 4.5V to 5.5V and includes an internal track/hold circuit, voltage reference, and clock. The device utilizes an I2C-compatible 2-wire serial interface supporting data rates up to 1.7MHz in high-speed mode. Supply current is 670µA at the maximum sampling rate of 94.4ksps, reducing to less than 1µA during AutoShutdown power-down modes. The part is housed in a 16-pin QSOP package and is guaranteed to operate over an extended temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 12-channel analog multiplexer with fully differential track-and-hold circuitry for signal acquisition.
• Features a software-configurable unipolar or bipolar input range selectable via the setup register.
• Includes an on-chip 4.096V internal voltage reference with provisions for external reference inputs.
• Supports high-speed I2C communication with Fast Mode and High-Speed Mode capabilities.

Analog To Digital Converters (ADC) Applications

• Hand-held portable instruments
• Medical instrumentation systems
• Battery-powered test equipment
• Solar-powered remote monitoring systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm lead-free status and RoHS compliance. Confirm that the package type matches the required board layout specifications. Ensure the operating voltage requirements align with the system's power supply rails before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 10-bit resolution with multiple analog inputs is required for battery-operated applications. Consider the MAX1138EEE+T for designs needing a 4.5V to 5.5V supply range and an integrated 4.096V reference. Evaluate the trade-off between sampling speed and power consumption based on the AutoShutdown feature availability.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1136–MAX1139 family of low-power, multichannel ADCs. It shares architectural similarities with the MAX1236–MAX1239 series, which offers pin-compatible 12-bit resolution options. The MAX1138 variant specifically provides twelve input channels within a compact 16-pin QSOP footprint.

Analog To Digital Converters (ADC) Replacement Considerations

For pin-compatible upgrades requiring higher resolution, consider the MAX1238EEE+T. For lower channel counts, the MAX1136EEE+T serves as a four-channel alternative within the same family.