ADS7844EB

Analog To Digital Converters (ADC) Overview

The ADS7844EB is a 12-bit, 8-channel serial output sampling analog-to-digital converter manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture to achieve a maximum sampling rate of 200 kS/s. The device supports pseudo-differential and single-ended input types with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage range of 1.9 V to 5.5 V. Key performance metrics include a differential nonlinearity (DNL) of +/- 1 LSB, integral nonlinearity (INL) of +/- 1 LSB, and a signal-to-noise and distortion ratio (SINAD) of 72 dB. It operates within a temperature range of -40°C to +85°C and is housed in a QSOP-20 package.

Analog To Digital Converters (ADC) Feature Summary

• Eight multiplexed analog input channels supporting both pseudo-differential and single-ended configurations for flexible signal acquisition.
• High precision conversion accuracy with low nonlinearity errors, ensuring no missing codes and reliable data output.
• Low power consumption capability suitable for battery-operated systems, with typical power dissipation of 1.8 mW.
• Serial interface compatibility simplifies connection to microprocessors and digital signal controllers.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation requiring high-resolution data acquisition
• Industrial process control systems monitoring multiple sensor inputs
• Medical equipment needing precise analog signal digitization
• Data logging systems with moderate speed requirements

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'EB' against the manufacturer's current datasheet to confirm package type and availability status. Ensure compliance with RoHS directives if required for your application. Check moisture sensitivity levels for proper storage and handling procedures before soldering. Confirm that the QSOP-20 package dimensions match your PCB footprint design constraints.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight channels of 12-bit resolution are needed at speeds up to 200 kS/s. Consider the ADS7844EB over other variants if the QSOP-20 package is preferred for space-constrained designs. Evaluate power supply requirements carefully, as the device supports wide analog and digital voltage ranges. Compare DNL and INL specifications against system accuracy needs to ensure sufficient linearity for the intended measurement tasks.

Analog To Digital Converters (ADC) Part Context

The ADS7844 belongs to a family of high-speed, low-power ADCs from Texas Instruments. It shares architectural similarities with other SAR-based converters but is distinguished by its eight-channel multiplexer and serial interface. This part is designed for applications balancing resolution, speed, and power efficiency. It complements other devices in the portfolio offering different channel counts or interface types.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7844N is a documented equivalent part number. Verify pinout and electrical specifications match before substitution. Ensure package compatibility between QSOP-20 and alternative packages if cross-referencing with other series members.