ADC121S021CISDX

Analog To Digital Converters (ADC) Overview

The ADC121S021CISDX is a single-channel, 12-bit successive-approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with a single supply voltage ranging from +2.7V to +5.25V and supports sample rates between 50 ksps and 200 ksps. The device features an internal track-and-hold circuit and a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Packaged in a 6-lead WSON (NGF0006A), it ensures specified performance across the industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes and straight binary output
• Variable power management: 1.5 mW at 3.6V and 7.9 mW at 5.25V during normal operation
• Low shutdown power consumption as low as 2.6 µW at 5.25V
• Single-ended input range from 0V to VA

Analog To Digital Converters (ADC) Applications

• Portable battery-powered systems
• Remote data acquisition networks
• Instrumentation and control systems

Analog To Digital Converters (ADC) Procurement Notes

Verify that the ordering suffix CISDX corresponds to the specific tape-and-reel packaging configuration required for automated assembly. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer's production data. Ensure the supply voltage provided matches the 2.7V to 5.25V operating range to maintain electrical specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, 12-bit conversion is required with throughput up to 200 ksps. It is suitable for designs where power consumption must be minimized through configurable shutdown modes. Ensure the system clock frequency allows for the required acquisition time (tACQ) of up to 350 ns to meet linearity specifications.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC121S021 family, which includes pin-compatible alternatives with varying resolutions and speeds. Table 1 in the datasheet lists related devices such as the ADC101S021 (10-bit) and ADC081S021 (8-bit) for the same speed range, or higher-speed variants like the ADC121S051 and ADC121S101.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC121S021 is functionally and pin-compatible with other members of the ADC121Sxx1 family. Direct substitutes include the ADC121S021CISD for identical specifications in different packaging, or the ADC101S021 and ADC081S021 if lower resolution is acceptable.