ADC122S021CIMMX/NOPB

The ADC122S021CIMMX/NOPB is a low-power, two-channel CMOS 12-bit analog-to-digital converter from Texas Instruments. It uses a successive-approximation register (SAR) architecture with an internal track-and-hold circuit. The device is fully specified over a sample rate range of 50 ksps to 200 ksps, ensuring consistent performance across varying speeds.

Key specifications include a 12-bit resolution, maximum sampling rate of 200 ksps, and two single-ended input channels configured via a multiplexer. The converter supports SPI, Microwire, and DSP serial interfaces. It operates from a single supply voltage between 2.7V and 5.25V, with typical power consumption of 2.2 mW at 3V and 7.9 mW at 5V. A power-down mode reduces consumption to 0.14 µW at 3V and 0.32 µW at 5V. Dynamic performance includes a typical SNR of 72 dB, DNL of +0.4/-0.2 LSB, and INL of ±0.35 LSB.

The ADC122S021CIMMX/NOPB is suitable for applications requiring low power and moderate speed, such as portable instrumentation, sensor interfaces, and data acquisition systems. It is packaged in an 8-lead VSSOP (3mm x 4.9mm) surface-mount package and operates over the industrial temperature range of -40°C to 85°C.