ADS7822EC/2K5G4

Analog To Digital Converters (ADC) Overview

The ADS7822EC/2K5G4 is a single-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage range of 4.75 V to 5.25 V. The device features a sampling rate of 75 kS/s and utilizes a 3-wire serial interface compatible with standard SPI protocols. Housed in an 8-lead VSSOP package, it supports pseudo-differential or single-ended input configurations. Key performance metrics include a differential nonlinearity (DNL) and integral nonlinearity (INL) of +/- 0.75 LSB, a signal-to-noise and distortion ratio (SINAD) of 71 dB, and a typical power consumption of 1.6 mW. It functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower architecture enabling low energy consumption suitable for battery-operated systems
• High-speed 12-bit resolution with 75 kS/s sampling capability
• Flexible input configuration supporting both pseudo-differential and single-ended modes
• Standard 3-wire serial interface for simplified microcontroller integration

Analog To Digital Converters (ADC) Applications

• Portable instrumentation requiring low power and high accuracy
• Industrial process control data acquisition systems
• Battery-powered medical devices
• Automotive sensor interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'EC' designation corresponds to the commercial temperature grade (-40°C to +85°C) and the VSSOP-8 package type. Ensure the ordering quantity matches the reel specification associated with the '/2K5' suffix if applicable to your inventory system. Cross-reference the datasheet revision date to ensure compatibility with current design requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance between moderate speed (75 kS/s) and precision (12-bit) is required in a compact surface-mount package. It is appropriate for applications where external reference voltage usage is acceptable and power efficiency is critical. Compare against the ADS7822U if a higher sampling rate of 200 kS/s is needed, or against the ADS7822UB/2K5G4 if a SOIC-8 package is preferred over VSSOP-8. Ensure the system can accommodate the specified analog and digital supply voltage ranges.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7822 family of microPower 12-bit ADCs from Texas Instruments. It shares architectural similarities with the ADS7822U and ADS7822UB variants but differs in package type (VSSOP-8 vs. SOIC-8) and potentially sampling rate specifications depending on the specific sub-model. The family is designed for general-purpose data acquisition tasks requiring low power and small footprint.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7822U serves as a pin-compatible alternative with a SOIC-8 package, though it may offer a different sampling rate. The ADS7822EC/250 is a similar variant in the same package but may differ in packaging quantity or minor electrical characteristics. Verify functional equivalence regarding sampling speed and linearity before substitution.