AD7938BSUZ-6REEL7

Overview

The AD7938BSUZ-6REEL7 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It features eight analog input channels with an integrated sequencer and operates from a single 2.7 V to 5.25 V supply. The device supports throughput rates up to 625 kSPS with power consumption of 3.6 mW at 3 V and 7.5 mW at 5 V. It includes an accurate on-chip 2.5 V reference, software-configurable single-ended, fully differential, or pseudo-differential inputs, and a high-speed parallel interface with word/byte modes.

Feature Summary

• Eight analog input channels with a channel sequencer for preprogrammed sequential conversion.
• Software-selectable analog input configurations including single-ended, fully differential, and pseudo-differential modes.
• Integrated precise 2.5 V internal voltage reference with low temperature coefficient.
• VDRIVE function enabling the parallel interface to operate independently of the main analog supply voltage.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing single-supply operation and low power consumption.
• Data acquisition modules interfacing directly with microprocessors via parallel interface.

Procurement Notes

Verify that the ordering suffix matches the required package type and reel configuration. Confirm the specific revision level against the latest manufacturer documentation to ensure compatibility with design specifications. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution and 625 kSPS throughput are required for multi-channel applications. Ensure the system design accommodates the 2.7 V to 5.25 V supply range and utilizes the VDRIVE pin if the logic interface voltage differs from the analog supply. Consider the internal reference accuracy and available input configurations during the initial architecture phase.

Part Context

This part belongs to the AD7938-6 family of high-speed, low-power ADCs. It shares architectural similarities with the AD7938 but offers reduced throughput optimized for lower power applications. The device complements other SAR ADCs in the portfolio by providing a balance between speed, resolution, and power efficiency for cost-sensitive designs.

Replacement Considerations

The AD7938BSUZ is a non-reel variant of the same functional device. Verify package compatibility and reel specifications when substituting. No direct cross-manufacturer equivalents are documented in the provided source material.