ADS8321EB/250G4

Analog To Digital Converters (ADC) Overview

The ADS8321EB/250G4 is a 16-bit, high-speed, micro-power sampling analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a successive approximation register (SAR) architecture and operates with a single supply voltage ranging from 4.75 V to 5.25 V for both analog and digital domains. The device supports a maximum sampling rate of 100 kS/s and offers flexible input configurations including differential, pseudo-differential, and single-ended modes. It utilizes a 3-wire serial interface compatible with standard SPI protocols. Key performance metrics include a signal-to-noise ratio (SNR) of 87 dB, a differential nonlinearity (DNL) of ±2 LSB, and an integral nonlinearity (INL) of ±0.012% FSR. Power consumption is specified at 5.5 mW, with a maximum power dissipation of 8.5 mW. The component is housed in an 8-pin VSSOP package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Supports differential, pseudo-differential, and single-ended input configurations for versatile signal conditioning.
• Features a low-power SAR architecture optimized for battery-operated applications with minimal energy consumption.
• Integrates a 3-wire serial interface compatible with standard DSP and microcontroller systems.

Analog To Digital Converters (ADC) Applications

• Portable medical instrumentation requiring high resolution and low power consumption
• Industrial process control systems utilizing serial communication buses
• Data acquisition modules for environmental monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current datasheet to confirm lead-free status and RoHS compliance details. Ensure the ordering part number matches the exact package variant and temperature grade required for the design. Cross-reference the revision level of the documentation to validate all electrical specifications before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution is required alongside a 100 kS/s sampling rate. It is suitable for designs needing external reference voltages rather than internal ones. Consider the VSSOP-8 package constraints for PCB layout. Verify that the system logic levels are compatible with the 3-wire serial interface requirements.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS832x family of high-speed, micro-power ADCs from Texas Instruments. It shares architectural similarities with the ADS8320 but differs in supply voltage requirements and specific performance characteristics. The family is designed for applications demanding precision data conversion in space-constrained environments.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8320E-250 is a related device within the same family. However, it supports a wider supply voltage range of 2.7 V to 5.25 V compared to the ADS8321's 4.75 V to 5.25 V requirement. Direct substitution requires verifying supply voltage compatibility and checking if the SNR difference (90 dB vs 87 dB) impacts system accuracy.