ADS8321E/250G4

Analog To Digital Converters (ADC) Overview

The ADS8321E/250G4 is a 16-bit, high-speed, micro-power sampling analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates within an analog supply voltage range of 2.7 V to 5.25 V and supports a maximum sampling rate of 250 kSPS. The device features a serial interface compatible with standard SPI protocols and utilizes a Successive Approximation Register (SAR) architecture. It is housed in an 8-pin Very Small Outline Package (VSSOP). The operational temperature range extends from -40°C to +85°C. Key electrical specifications include a signal-to-noise ratio (SNR) of 90 dB and differential input capability.

Analog To Digital Converters (ADC) Feature Summary

• Micro-power consumption suitable for battery-operated systems
• High-speed 16-bit resolution with 250 kSPS sampling rate
• Single-supply operation from 2.7 V to 5.25 V
• Serial interface compatible with DSPs and microcontrollers

Analog To Digital Converters (ADC) Applications

• Portable medical instrumentation
• Industrial process control data acquisition
• Battery-powered measurement devices
• Vibration monitoring systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the suffix G4 indicates lead-free and RoHS compliance status as per Texas Instruments documentation. Confirm the package type is VSSOP-8 and the operating temperature grade covers the required industrial range. Ensure the ordering part number matches the specific speed grade and pin configuration required for the design.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of high resolution and moderate speed is required with low power constraints. Compare against the ADS8320 if a lower sampling rate of 100 kSPS is sufficient for the application. Consider the external reference requirement and single-channel architecture when designing the signal chain.

Analog To Digital Converters (ADC) Part Context

The ADS8321 belongs to the Texas Instruments ADS83xx family of 16-bit micro-power ADCs. This series is designed for applications requiring high accuracy with minimal power draw. The E variant denotes the commercial/industrial temperature range extension compared to military grades, while the G4 suffix typically specifies environmental compliance.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8320E is a functional substitute offering similar 16-bit resolution but with a reduced sampling rate of 100 kSPS. Designers must verify that the lower throughput meets system timing requirements before substituting.