ADC121C021QIMK/NOPB

Analog To Digital Converters (ADC) Overview

The ADC121C021QIMK/NOPB is a monolithic, low-power, 12-bit analog-to-digital converter (ADC) based on a successive approximation register architecture. It operates from a single +2.7V to +5.5V supply and features an I2C-compatible serial interface supporting Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) modes. The device includes an internal track-and-hold circuit capable of handling input frequencies up to 11MHz. Key specifications include a maximum throughput rate of 188.9 ksps, integral non-linearity of ±1 LSB (max), and a typical conversion time of 1µs. It offers an out-of-range alert function and automatic power-down mode.

Analog To Digital Converters (ADC) Feature Summary

• I2C-Compatible Interface: Supports Standard, Fast, and High Speed modes for flexible system integration.
• Out-of-Range Alert Function: Provides an interrupt when the analog input violates programmable upper or lower limit values.
• Automatic Power-Down Mode: Reduces power consumption significantly while not converting.
• Automotive Grade Qualification: AEC-Q100 Grade 2 qualified for automotive applications.

Analog To Digital Converters (ADC) Applications

• System Monitoring
• Peak Detection
• Portable Instruments
• Medical Instruments
• Test Equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IMK' corresponds to the SOT-23-6 package with the ALERT pin configuration as documented in the official datasheet. Confirm that the 'Q' designation indicates AEC-Q100 Grade 2 qualification suitable for automotive environments. Ensure the ordering part number matches the exact temperature range and package variant required for your design implementation.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring a small footprint and low power consumption with I2C connectivity. Consider the ADC121C021 family if pin compatibility with other resolutions is needed. Verify that the single-ended input type and SAR architecture meet the signal conditioning requirements. Check if the automatic conversion mode and alert features align with the system's monitoring needs.

Analog To Digital Converters (ADC) Part Context

The ADC121C021Q is part of the ADC121C021/ADC121C027 family of 12-bit ADCs. It shares pin compatibility with the standard ADC121C021 but carries the 'Q' suffix indicating automotive qualification. It is distinct from the ADC121C027, which lacks the ALERT pin but includes address selection inputs. This family also includes 8-bit and 10-bit variants like the ADC081C021 and ADC101C021.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the ADC121C021CIMK/NOPB (standard grade) and the ADC121C027CIMK/NOPB (address selection only). For different resolutions, consider the ADC101C021 or ADC081C021 series. Ensure any substitute maintains the required I2C interface and package type.