ADC12138CIMSAX/NOPB

Analog To Digital Converters (ADC) Overview

The ADC12138CIMSAX/NOPB is a self-calibrating, 12-bit plus sign successive approximation analog-to-digital converter (ADC) featuring an eight-channel configurable input multiplexer. It supports serial I/O interfaces including MICROWIRE, SPI, and QSPI. The device operates on a single supply voltage ranging from 3.0 V to 5.5 V. Key electrical specifications include a maximum conversion time of 8.8 μs, a throughput time of 14 μs, and an integral linearity error of ±2 LSB after auto-calibration. Power consumption is specified at 33 mW maximum under +5V operation.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 8-channel differential multiplexer with programmable acquisition time
• Self-calibrating architecture adjusts linearity, zero, and full-scale errors
• Configurable serial I/O compatible with MICROWIRE, SPI, and QSPI protocols
• Variable digital output word length and format options

Analog To Digital Converters (ADC) Applications

• Pen-based computers
• Digitizers
• Global positioning systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific package configuration for the IMSA suffix against current Texas Instruments product availability data. Confirm RoHS compliance status as some family members may be obsolete. Ensure the ordering suffix matches the required pin count and thermal characteristics for the target PCB layout.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an eight-channel multiplexed input is required alongside 12-bit resolution. The device accommodates both single-ended and differential input configurations within a 0V to 5V range using a single supply. Consider the variable acquisition time settings if signal source impedance requires extended settling periods before conversion.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC12130/32/38 family of self-calibrating SAR ADCs. The ADC12138 variant specifically distinguishes itself by providing an eight-channel multiplexer, whereas the ADC12130 offers two channels and the ADC12132 provides four channels. All variants share identical core conversion performance and interface capabilities.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same family include the ADC12130 and ADC12132, provided the channel count requirements are met. Verify pin compatibility and package dimensions when substituting between these models.