ADC121S101CISDX/NOPB

Analog To Digital Converters (ADC) Overview

The ADC121S101CISDX/NOPB is a single-channel, 12-bit successive-approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2.7V to 5.25V and supports sampling rates between 500 ksps and 1 Msps. The device features an internal track-and-hold circuit and outputs straight binary data via a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Key electrical specifications include typical DNL of +0.5/-0.3 LSB, INL of ±0.40 LSB, and power consumption of 2.0 mW at 3V or 10 mW at 5V. It is housed in a 6-lead SOT-23 package.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 500 ksps to 1 Msps sampling rate range
• Single supply operation from 2.7V to 5.25V
• Compatible with SPI, QSPI, MICROWIRE, and DSP interfaces
• Low power consumption: 2.0 mW (3V), 10 mW (5V), 2.6 µW (shutdown)

Analog To Digital Converters (ADC) Applications

• Portable systems
• Remote data acquisition
• Instrumentation and control systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the component marking code 'CISD' corresponds to the SOT-23-6 package variant. Confirm that the ordering suffix '/NOPB' indicates lead-free status and RoHS compliance as per Texas Instruments standards. Ensure the source documentation matches the SNAS304F datasheet revision for accurate electrical limits.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-power, single-channel 12-bit ADC is required for space-constrained designs. The SOT-23-6 package offers a compact footprint suitable for portable applications. Ensure the system logic levels are within the 5.25V digital input limit regardless of the analog supply voltage.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC121S101 family, which includes pin-compatible alternatives like the ADC121S021 and ADC121S051 for lower speed requirements. The 'CISD' suffix specifically denotes the SOT-23 package type, distinguishing it from the WSON package variants available in the same series.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible substitutes include the ADC121S021 (50-200 ksps), ADC121S051 (200-500 ksps), and other members of the ADC121Sxx series. These devices share identical pinouts and functionality but differ in specified throughput ranges.