ADS7822E/250G4

Analog To Digital Converters (ADC) Overview

The ADS7822E/250G4 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 of 4.75 V to 5.25 V. The device supports a sampling rate of 200 kS/s and features a 3-wire serial interface compatible with standard SPI protocols. Housed in an 8-pin VSSOP package, it accepts pseudo-differential or single-ended input signals. Key performance metrics include a signal-to-noise and distortion ratio (SINAD) of 71 dB, differential nonlinearity (DNL) of ±2 LSB, and integral nonlinearity (INL) of ±2 LSB. Power consumption is rated at 1.6 mW, and the operating temperature range spans from -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 200 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 measurement devices
• Medical equipment signal conditioning

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance when sourcing. Confirm the E/250 designation corresponds to the correct temperature grade and packaging format. Ensure compatibility with external reference requirements as the device does not contain an internal reference. Check moisture sensitivity levels for proper storage and handling procedures during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of speed and power efficiency is required for single-channel applications. The 12-bit resolution provides adequate precision for many general-purpose sensing tasks. Consider the VSSOP-8 package constraints for PCB layout. Verify that the 3-wire interface timing meets the system clock requirements. Compare DNL and INL specifications against application tolerance needs.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7822 family of micro-power ADCs from Texas Instruments. It shares architectural similarities with other members like the ADS7822UBG4 but differs in package type and specific electrical characteristics such as linearity errors. The family is designed for applications needing moderate speed with minimal power draw.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7822UBG4 offers similar functionality in an SOIC-8 package with slightly different linearity specs. ADS7822EC/2K5G4 provides lower linearity error but operates at a reduced sampling rate of 75 kS/s. Evaluate pinout compatibility and thermal performance when substituting.