ADS7822U

Analog To Digital Converters (ADC) Overview

The ADS7822U is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2.7 V to 5.25 V for the analog section and 4.75 V to 5.25 V for the digital section. The device features a sampling rate of 200 kS/s with a power consumption of 1.6 mW. It utilizes a 3-wire serial interface and supports pseudo-differential or single-ended input types. The component is housed in an SOIC-8 package and functions within a temperature range of -40°C to +85°C. Key performance metrics include a differential nonlinearity (DNL) and integral nonlinearity (INL) of ±2 LSB, and a signal-to-noise and distortion ratio (SINAD) of 71 dB.

Analog To Digital Converters (ADC) Feature Summary

• MicroPower operation with low energy consumption suitable for battery-powered applications
• High-speed 200 kSPS sampling capability using SAR architecture
• Flexible input configuration supporting both pseudo-differential and single-ended modes
• Compact surface-mount packaging designed for space-constrained circuit designs

Analog To Digital Converters (ADC) Applications

• Battery-powered instrumentation systems
• Remote data acquisition modules
• Isolated data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure that the required operating voltage ranges align with the system design constraints before procurement. Confirm RoHS compliance status through official documentation. Cross-reference the part number with authorized distributors to validate authenticity and availability.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 200 kSPS speed are required in a compact SOIC-8 form factor. Consider the ADS7822U if the application demands low power consumption at high sampling rates. Verify compatibility with the system's serial interface timing requirements. Evaluate the pseudo-differential input capability against the noise environment of the signal source.

Analog To Digital Converters (ADC) Part Context

The ADS7822U belongs to the ADS7822 series of micro-power ADCs from Texas Instruments. This family focuses on providing high-speed conversion with minimal power usage in small packages. The U suffix typically denotes the SOIC-8 package variant within this product line. Other variants in the series may offer different pin counts or package styles such as VSSOP or Mini-DIP.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7822EC/2K5G4 serves as a functional alternative within the same series, offering similar 12-bit performance but in a VSSOP-8 package with a reduced sampling rate of 75 kS/s. Designers must account for the package footprint change and the difference in maximum sampling speed when substituting parts.