ADC122S021CIMMX

Analog To Digital Converters (ADC) Overview

The ADC122S021CIMMX is a low-power, two-channel CMOS 12-bit analog-to-digital converter featuring a successive-approximation register architecture with an internal track-and-hold circuit. It supports variable sample rates from 50 ksps to 200 ksps and operates on a single supply ranging from +2.7V to +5.25V. The device provides a high-speed serial interface compatible with SPI, QSPI, and MICROWIRE standards. Typical performance includes a Signal-to-Noise Ratio of 72 dB, DNL of +0.4/-0.2 LSB, and INL of ±0.35 LSB. Power consumption is 7.9 mW at 5V and 2.2 mW at 3V during normal operation.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with two input channels (IN1, IN2) and straight binary output coding
• Variable sample rate specification over the range of 50 ksps to 200 ksps
• Single power supply operation from +2.7V to +5.25V with shutdown mode reducing current to <0.32 µW
• High-speed serial interface supporting clock frequencies up to 3.2 MHz

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 specific ordering suffix CIMMX against the manufacturer's current product folder to confirm package type and temperature grade. Confirm availability status as production data may vary by region. Ensure the source document matches the SNAS280C revision for accurate electrical characteristics.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel 12-bit conversion is required within the 50–200 ksps throughput range. It is pin-compatible with the ADC122S051 (200–500 ksps) and ADC122S101 (500 ksps–1 Msps) for speed upgrades without PCB redesign. Ensure the analog supply voltage remains within the 2.7V to 5.25V range to maintain specified linearity and noise performance.

Analog To Digital Converters (ADC) Part Context

The ADC122S021 belongs to the Texas Instruments ADC12xS family of low-power SAR ADCs. It shares the same 8-lead VSSOP package and pinout with other resolutions in the series, such as the 10-bit ADC102S021 and 8-bit ADC082S021. This pin compatibility allows for design flexibility across different resolution requirements while maintaining identical physical footprint constraints.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives include the ADC122S051 for higher speeds (200–500 ksps) and the ADC122S101 (500 ksps–1 Msps). For lower resolution needs, the ADC102S021 or ADC082S021 are direct substitutes.