AD7933BRU-REEL7

Overview

The AD7933BRU-REEL7 is a 10-bit, high-speed successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It features four multiplexed analog input channels with an integrated sequencer and operates from a single 2.7 V to 5.25 V power supply. The device achieves a maximum throughput rate of 1.5 MSPS with low power consumption, dissipating up to 6 mW at 3 V and 13.5 mW at 5 V. It includes an accurate on-chip 2.5 V reference and supports software-configurable single-ended, fully differential, or pseudo-differential inputs. Data is transferred via a high-speed parallel interface compatible with 3 V or 5 V processor systems through the VDRIVE function.

Feature Summary

• Four analog input channels with a programmable channel sequencer for automated conversion sequences.
• Software-selectable analog input configurations supporting single-ended, fully differential, and pseudo-differential modes.
• Integrated precise 2.5 V internal voltage reference with external overdrive capability.
• High-speed parallel interface with word/byte transfer modes and independent logic level control via VDRIVE.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing battery-powered single-supply operation.
• Vibration monitoring and acoustic sensing applications.
• Medical equipment requiring isolated signal conditioning interfaces.

Procurement Notes

Verify the specific suffix REEL7 indicates tape-and-reel packaging when sourcing components. Confirm that the B-grade variant meets the required commercial temperature range specifications for the intended application environment. Ensure compatibility with the target system's digital logic levels before finalizing procurement orders.

Selection Notes

Select this component for applications requiring moderate resolution with high sampling rates across multiple channels. The integrated sequencer reduces microprocessor overhead compared to devices lacking this feature. Consider the AD7934 if higher 12-bit resolution is necessary, noting potential differences in gain error specifications and pin compatibility within the same package family.

Part Context

This part belongs to the AD7933/AD7934 series of SAR ADCs designed for low-power, high-throughput performance. It shares the 28-lead TSSOP footprint with the 12-bit AD7934 variant, facilitating design flexibility. The series emphasizes energy efficiency through autostandby and full shutdown modes, making it suitable for battery-operated portable devices alongside stationary industrial equipment.

Replacement Considerations

The AD7934 serves as a direct pin-compatible alternative offering 12-bit resolution instead of 10 bits. Designers should verify that the increased resolution requirements do not conflict with existing system bandwidth constraints or calibration algorithms when substituting between these variants.