Texas Instruments

ADC121S101CIMF  

Analog to Digital Converters

ADC121S101CIMF Description

The ADC121S101CIMF from Texas Instruments is a 12-bit, 1 MSPS successive approximation register (SAR) analog-to-digital converter (ADC) designed for high-speed, low-power applications. Packaged in a compact SOT23-6 form factor, this single-channel ADC operates with a 2.7V to 5.25V supply range, making it suitable for both 3.3V and 5V systems. It features a single-ended input, SPI/DSP-compatible serial interface, and a supply-referenced architecture, eliminating the need for an external reference voltage. Despite its obsolete status, it remains a reliable choice for legacy designs requiring high-speed, low-power ADCs with minimal external components.

ADC121S101CIMF Features

• 12-bit resolution with 1 MSPS sampling rate for precise signal acquisition.
• Single-supply operation (2.7V–5.25V) simplifies power management.
• SPI/DSP-compatible serial interface ensures easy integration with microcontrollers and DSPs.
• Supply-referenced architecture reduces BOM cost by eliminating external references.
• Single-ended input simplifies front-end design.
• Compact SOT23-6 package saves board space in space-constrained applications.
• Low power consumption ideal for battery-powered systems.
• 1:1 sample-and-hold (S/H) to ADC ratio ensures accurate signal capture.

ADC121S101CIMF Applications

This ADC is well-suited for applications requiring high-speed, low-power data conversion, including:

• Portable instrumentation (e.g., handheld meters, data loggers).
• Industrial sensors (e.g., pressure, temperature, and strain measurement).
• Battery-powered systems (e.g., wireless sensors, IoT edge devices).
• Automotive diagnostics (e.g., sensor interfaces in legacy systems).
• Consumer electronics (e.g., audio processing, touch panels).

Conclusion of ADC121S101CIMF

The ADC121S101CIMF offers a compelling combination of speed, resolution, and simplicity, making it a strong candidate for embedded systems where space and power efficiency are critical. While marked as obsolete, its performance characteristics—such as 1 MSPS throughput, 12-bit accuracy, and SPI compatibility—ensure continued relevance in legacy and cost-sensitive designs. Engineers seeking a compact, supply-referenced SAR ADC for high-speed signal acquisition will find this device a practical solution.

ADC121S101CIMF Documents

Download datasheets and manufacturer documentation for ADC121S101CIMF

Datasheets :

ADC121S101      

HTML Datasheet :

ADC121S101