ADS7822U/2K5

Analog To Digital Converters (ADC) Overview

The ADS7822U/2K5 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with a sampling rate of 200 kS/s and supports a pseudo-differential or single-ended input configuration. The device utilizes a 3-wire serial interface for communication. It functions within an analog supply voltage range of 2.7 V to 5.25 V, while the digital supply requires 4.75 V to 5.25 V. Power consumption is specified at 1.6 mW. Differential nonlinearity and integral nonlinearity are both +/- 2 LSB. The signal-to-noise and distortion ratio is 71 dB. It is housed in an SOIC-8 package and operates between -40°C and +85°C.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower operation enables efficient energy usage in battery-powered applications.
• High-speed 200 kS/s sampling capability supports dynamic signal acquisition.
• Flexible input structure accommodates both pseudo-differential and single-ended signals.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation systems requiring low power consumption
• Battery-operated data acquisition modules
• Industrial process control signal conditioning

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'U/2K5' against the manufacturer's current datasheet to confirm package type and tube packaging details. Ensure the digital supply voltage requirements align with the system design, as they differ from the analog supply range. Confirm RoHS compliance status through official documentation before integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of moderate speed and low power is required for single-channel conversion. The external reference requirement allows for customized voltage scaling. Verify that the 3-wire interface timing matches the host microcontroller capabilities. Consider thermal dissipation limits given the 1.6 mW power rating in the SOIC-8 package.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7822 series of high-speed, micro-power ADCs. It shares architectural similarities with other SAR converters but is distinct in its specific voltage ranges and interface protocol. The U/2K5 designation indicates the SOIC-8 tube packaging variant within the broader product family.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7822EB/2K5 offers a VSSOP-8 package alternative with similar electrical characteristics. ADS7822EC/2K5 provides a VSSOP-8 option with potentially different linearity specifications. Verify pin compatibility and parameter alignment before substitution.