AD7928WBRUZ-REEL

Overview

The AD7928WBRUZ-REEL is a 12-bit, 8-channel successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single 2.7 V to 5.25 V supply with a maximum throughput rate of 1 MSPS. The device features eight single-ended inputs managed by a channel sequencer and supports SPI/QSPI/MICROWIRE/DSP serial interfaces. Key electrical parameters include a minimum Signal-to-Noise Ratio (SNR) of 69.5 dB at 5 V for W models, power dissipation of 13.5 mW max at 5 V, and an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated channel sequencer for automated sequential conversion of eight single-ended inputs.
• Flexible power management with auto shutdown and full shutdown modes to minimize current consumption.
• VDRIVE function allows the serial interface logic level to operate independently of the analog supply voltage.

Applications

• Industrial process control systems requiring multi-channel signal acquisition.
• Data acquisition modules in instrumentation equipment.
• Automotive sensor interface circuits.

Procurement Notes

Verify that the specific suffix 'W' corresponds to the required performance grade, as datasheet specifications distinguish between B and W model variants regarding dynamic performance metrics like SINAD and SNR. Confirm the reel packaging format matches the REEL designation in the part number before finalizing procurement orders.

Selection Notes

Select this component when a low-power, high-speed solution for multiple single-ended signals is required. Ensure the system design accommodates the external reference input requirement and that the serial clock frequency does not exceed the specified maximum limits for the target supply voltage.

Part Context

This part belongs to the AD7908/AD7918/AD7928 family of 8-channel ADCs. The AD7928 variant specifically provides 12-bit resolution, distinguishing it from the 8-bit AD7908 and 10-bit AD7918 counterparts within the same package and feature set.

Replacement Considerations

Direct functional replacements within the same family include AD7928BRUZ and AD7928BRUZ-REEL. Verify that substitute parts match the specific W-model performance specifications if those are critical to the application design.