ADC122S021CIMM

Analog To Digital Converters (ADC) Overview

The ADC122S021CIMM 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 operates over a sample rate range of 50 ksps to 200 ksps and supports a single power supply 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 (SNR) of 72 dB, Integral Non-Linearity (INL) of ±0.35 LSB, and Differential Non-Linearity (DNL) of +0.4/-0.2 LSB. Power consumption is typically 2.2 mW at 3.6V and 7.9 mW at 5.25V 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 power management with shutdown mode reducing consumption to 0.14 µW at 3.6V
• Single supply operation ranging from +2.7V to +5.25V
• Serial interface compatible with SPI, QSPI, and MICROWIRE protocols

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 component status as production data may indicate end-of-life or discontinuation for specific ordering suffixes like CIMM. Confirm that the package type matches the required 8-lead VSSOP form factor. Ensure compatibility with industrial temperature ranges (-40°C to +85°C) if operating in harsh environments. Check for pin-compatible alternatives within the same family if supply constraints exist.

Analog To Digital Converters (ADC) Selection Notes

Select this device when 12-bit resolution and dual-channel capability are required within a small footprint. Consider the ADC122S021 for applications needing variable sampling rates between 50 ksps and 200 ksps. Evaluate power requirements carefully; use the shutdown feature if idle periods are frequent. Ensure the system clock frequency stays within the 0.8 MHz to 3.2 MHz range for specified electrical characteristics.

Analog To Digital Converters (ADC) Part Context

The ADC122S021 belongs to the Texas Instruments ADCx2Sxxx family, which offers pin-compatible variants with different resolutions (8-bit, 10-bit, 12-bit) and speed grades. It shares the same 8-lead VSSOP package and functional interface as parts like the ADC102S021 and ADC082S021. This family allows designers to scale resolution and speed without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives include the ADC122S051 (200-500 ksps), ADC122S101 (500 ksps-1 Msps), ADC102S021 (10-bit), and ADC082S021 (8-bit). These devices maintain identical pinouts and functionality but differ in specified speed ranges or resolution.