ADS7808U/1K

Analog To Digital Converters (ADC) Overview

The ADS7808U/1K is a single-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with a sampling rate of 100 kS/s and features a serial CMOS interface. The device supports both external and internal reference configurations. It functions within an analog and digital supply voltage range of 4.75 V to 5.25 V. Key performance metrics include a signal-to-noise ratio (SNR) of 73 dB and a SINAD of 73 dB. Differential nonlinearity (DNL) is +/- 0.45 LSB, while integral nonlinearity (INL) is +/- 0.45 LSB. Power consumption is typically 81.5 mW, with a maximum power dissipation of 100 mW. It is housed in a SOIC-20 package and operates between -40°C and +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Serial interface architecture for simplified system connectivity
• Single-ended input configuration for straightforward signal acquisition
• Flexible reference options supporting both internal and external sources

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring moderate resolution
• Data acquisition modules for sensor interfacing
• Portable instrumentation powered by standard 5V supplies

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '1K' indicates reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SOIC-20 package dimensions match the target PCB footprint. Validate that the operating temperature range meets the environmental requirements of the final assembly. Cross-reference the datasheet revision to ensure all electrical characteristics align with current design specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 100 kS/s speed are sufficient for the application. Consider the serial interface if pin count reduction is necessary compared to parallel ADCs. Evaluate the +/- 0.45 LSB linearity against system accuracy requirements. Compare power consumption against battery-operated constraints. Verify compatibility with existing microcontroller SPI or similar serial protocols.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7808 series of low-power, high-speed ADCs from Texas Instruments. It shares architectural similarities with other devices in the family but is distinguished by its 12-bit resolution and serial output capability. The U/1K designation specifies the industrial temperature grade and tape-and-reel packaging format. It serves as a cost-effective solution for applications not requiring the higher precision of 16-bit counterparts.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes may include other 12-bit SAR ADCs with serial interfaces from the same manufacturer. Verify pinout compatibility before replacing parallel interface variants. Check if alternative packages offer equivalent thermal and electrical performance. Ensure replacement parts maintain the same supply voltage and reference flexibility.