AD974BRZ

Overview

The AD974BRZ is a 16-bit, 200 kSPS data acquisition system (DAS) manufactured by Analog Devices Inc. It integrates four single-ended analog input channels, a 16-bit ADC, and a serial interface within a 28-pin SOIC W package. The device operates on a single +5 V supply with a maximum power dissipation of 120 mW. Key performance specifications include an overall nonlinearity error of ±2 LSB and support for external or internal 2.5 V reference selection. It features an on-chip clock and a power-down mode to minimize energy consumption during idle periods.

Feature Summary

• Four-channel 16-bit ADC with 200 kSPS throughput
• Single +5 V supply operation with 120 mW max power dissipation
• Integrated 2.5 V reference with external/internal selection capability
• Serial interface compatible with standard microcontrollers

Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Portable instrumentation and battery-powered measurement devices
• Data logging applications with moderate speed requirements

Procurement Notes

Verify the specific suffix 'BRZ' against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the design supports the required 28-pin SOIC W footprint and that the serial interface timing aligns with the host controller's capabilities. Confirm availability through authorized distributors as lead times may vary.

Selection Notes

Select this component when a compact, low-power solution for four-channel 16-bit acquisition is needed. It is suitable for applications where a single +5 V supply is available and serial communication bandwidth is sufficient for 200 kSPS per channel. Consider alternative parts if differential inputs or higher sampling rates are required.

Part Context

The AD974 series represents Analog Devices' integrated data acquisition solutions designed to simplify system architecture by combining ADCs, multiplexers, and references. The AD974BRZ specifically targets cost-sensitive industrial applications needing multiple channels without the complexity of discrete component designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other 16-bit, 4-channel DAS ICs from Analog Devices or competitors, ensuring pinout and electrical parameter compatibility before substitution.