ADC101S021CISD

Analog To Digital Converters (ADC) Overview

The ADC101S021CISD/NOPB is a single-channel, 10-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 a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 61.6 dB, integral non-linearity (INL) of ±0.14 LSB, and differential non-linearity (DNL) of +0.16/-0.09 LSB. Power consumption is 2.34 mW at 3.6V and 8.9 mW at 5.25V in normal mode, dropping to 2.6 µW in shutdown mode. It is housed in a compact 6-lead WSON package.

Analog To Digital Converters (ADC) Feature Summary

• Single-channel 10-bit SAR architecture with internal track-and-hold circuit
• Fully specified performance over a sample rate range of 50 ksps to 200 ksps
• Compatible with standard serial interfaces including SPI, QSPI, MICROWIRE, and DSP
• Low power operation: 2.34 mW at 3.6V and 8.9 mW at 5.25V; 2.6 µW in shutdown

Analog To Digital Converters (ADC) Applications

• Portable battery-powered systems requiring low power consumption
• Remote data acquisition networks
• Instrumentation and control systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the complete part number, including the suffix (e.g., CISD/NOPB), to ensure correct package type (6-WSON) and RoHS compliance. Confirm that the required sample rate falls within the specified 50 ksps to 200 ksps range for guaranteed electrical characteristics. Check for pin-compatible alternatives if different resolution or speed requirements arise.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-ended input, 10-bit resolution, and moderate speed up to 200 ksps are required. Ensure the system clock frequency allows for the necessary acquisition time (tACQ) of 350 ns max. Verify that the digital logic levels are compatible with the 2.7V to 5.25V supply range, noting that digital inputs are limited to 5.25V regardless of VA.

Analog To Digital Converters (ADC) Part Context

The ADC101S021 belongs to a family of pin-compatible devices offering varying resolutions and speeds. Alternatives include the ADC081S021 (8-bit), ADC121S021 (12-bit), and higher-speed variants like the ADC101S051 (200-500 ksps). All devices in this series share the same 6-lead package and functional pinout, facilitating design upgrades without PCB layout changes.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible substitutes include ADC081S021, ADC121S021, ADC101S051, and ADC101S101. These parts maintain identical pinouts but differ in resolution or maximum sample rate. Verify that the replacement meets the specific SNR, INL, and throughput requirements of the application.