ADC121C021CIMK/NOPB

Analog To Digital Converters (ADC) Overview

The ADC121C021CIMK/NOPB is a monolithic, low-power 12-bit analog-to-digital converter manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture with an internal track-and-hold circuit capable of handling input frequencies up to 11MHz. The device operates from a single +2.7V to +5.5V supply and features an I²C-compatible serial interface supporting standard (100kHz), fast (400kHz), and high-speed (3.4MHz) modes. Key specifications include a maximum throughput rate of 188.9 ksps, typical conversion time of 1µs, and integral/differential non-linearity of ±1 LSB. It includes an out-of-range alert function and automatic power-down mode.

Analog To Digital Converters (ADC) Feature Summary

• I²C-compatible 2-wire serial interface supporting multiple speed modes
• Out-of-range alert function for monitoring analog input limits
• Automatic power-down mode to minimize energy consumption
• Internal track-and-hold circuit for high-frequency signal processing

Analog To Digital Converters (ADC) Applications

• System monitoring
• Peak detection
• Portable instruments
• Medical instruments
• Test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CIMK' against official documentation to confirm package type and temperature range. Ensure the ordering code matches the exact pin configuration required for the target PCB layout. Confirm RoHS compliance status through the manufacturer's current product data sheet before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution with I²C connectivity is required in a compact form factor. Consider the ADC121C027 if hardware address selection is needed instead of the ALERT pin functionality. Evaluate power consumption requirements against the automatic power-down capabilities for battery-operated applications.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC121C family of pin-compatible analog-to-digital converters. It shares the same footprint as 8-bit (ADC081C021) and 10-bit (ADC101C021) variants, allowing for design flexibility across different resolution requirements without changing the board layout.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the ADC121C027, which offers pin-selectable addresses but lacks the ALERT pin. Other resolutions such as the ADC101C021 or ADC081C021 are also fully pin and function compatible.