ADC121S051CISD

Analog To Digital Converters (ADC) Overview

The ADC121S051CISD is a single-channel, 12-bit analog-to-digital converter (ADC) manufactured by National Semiconductor. It features a sampling rate of up to 500 ksps and utilizes a successive approximation register (SAR) architecture. The device operates with a supply voltage range of 2.7 V to 5.25 V for both analog and digital sections. Data is transmitted via a standard SPI or DSP-compatible serial interface. The component is housed in an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 500 ksps maximum sampling rate
• Single-ended input configuration
• SPI/DSP compatible serial interface
• Wide supply voltage range: 2.7 V to 5.25 V

Analog To Digital Converters (ADC) Applications

• Portable instrumentation
• Battery-powered systems
• Industrial process control

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADC121S family of high-speed, low-power ADCs from National Semiconductor. It is designed for applications requiring moderate resolution and speed in a compact footprint. The part is often referenced alongside similar devices like the ADC101S051 and ADC121S021 within the same product line.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements may include other members of the ADC121S series, such as the ADC121S021 (200 ksps) or ADC121S101 (1 Msps), provided the sampling rate requirements are met. Verify package compatibility (SOIC-8) and voltage specifications.