ADC121S101CIMFX

Analog To Digital Converters (ADC) Overview

The ADC121S101CIMFX is a single-channel, 12-bit successive-approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2.7V to 5.25V and supports sampling rates between 500 ksps and 1 Msps. The device features an internal track-and-hold circuit and outputs straight binary data via a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Key electrical specifications include typical DNL of +0.5/-0.3 LSB, INL of ±0.40 LSB, and SINAD of 72 dB at 100 kHz input frequency. Power consumption is 2.0 mW at 3V and 10 mW at 5V, reducing to 2.6 µW in shutdown mode.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 500 ksps to 1 Msps specified sample rate range
• Single power supply operation from 2.7V to 5.25V
• Low power consumption: 2.0 mW (3V), 10 mW (5V), 2.6 µW (shutdown)
• Compatible with SPI, QSPI, MICROWIRE, and DSP serial interfaces
• AEC-Q100 Grade 1 qualified automotive version available

Analog To Digital Converters (ADC) Applications

• Portable systems
• Remote data acquisition
• Instrumentation and control systems
• Automotive applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix 'CIMFX' against the manufacturer's official documentation to confirm the specific package type and tape/reel configuration. Ensure compatibility with system requirements for temperature range (-40°C to +125°C) and supply voltage (2.7V to 5.25V). Confirm that the digital input levels are within the specified limits relative to ground.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-power, single-channel 12-bit ADC is required for space-constrained designs. It is suitable for applications needing throughput up to 1 Msps with moderate accuracy. Consider the SOT-23-6 package if board space is limited. Ensure the host microcontroller supports the required serial clock frequencies (up to 20 MHz) and timing constraints for CS and SCLK signals.

Analog To Digital Converters (ADC) Part Context

The ADC121S101 is part of a family of pin-compatible ADCs from Texas Instruments, including the ADC121S021 and ADC121S051, which offer lower sampling rates. This specific model targets the higher end of the performance spectrum within the 12-bit SAR category. It shares architectural similarities with other devices in the series but is optimized for speeds up to 1 Msps.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives include the ADC121S021 (50-200 ksps), ADC121S051 (200-500 ksps), and ADC101S101 (10-bit, 500 ksps-1 Msps). Verify that the replacement meets the required sampling rate and resolution for the application.