AD7934BRUZ-REEL7

Overview

The AD7934BRUZ-REEL7 is a 12-bit, high-speed successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It features four analog input channels with an integrated sequencer and operates from a single 2.7 V to 5.25 V power supply. The device achieves throughput rates up to 1.5 MSPS with low power consumption of 6 mW at 3 V or 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 in word or byte modes.

Feature Summary

• Four analog input channels with a programmable channel sequencer for automated conversion sequences.
• Software-selectable input configurations supporting single-ended, fully differential, and pseudo-differential modes.
• Integrated precise 2.5 V internal voltage reference with low temperature coefficient.
• High-speed parallel digital interface compatible with 3 V or 5 V processor systems via the VDRIVE function.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing battery-powered single-supply operation.
• Medical equipment needing low-noise signal conversion with flexible input ranges.
• Automotive sensor interfaces demanding high throughput and robust performance.

Procurement Notes

Verify the specific ordering suffix REEL7 confirms tape-and-reel packaging when sourcing components. Confirm that the B variant meets the required commercial operating temperature range of -40°C to +85°C. Ensure compatibility with the target system's voltage levels for both VDD and VDRIVE pins before integration.

Selection Notes

Select this component when 12-bit resolution and 1.5 MSPS throughput are required for multi-channel applications. Consider the AD7933 if 10-bit resolution suffices for lower power constraints. Evaluate the need for the internal reference versus external precision references based on system accuracy requirements and noise sensitivity.

Part Context

This part belongs to the AD7933/AD7934 family of SAR ADCs designed for high-speed, low-power data acquisition. It shares architectural similarities with the AD7938/AD7939 series but offers fewer channels. The BRUZ package designation indicates a 28-lead TSSOP surface-mount form factor suitable for space-constrained PCB layouts.

Replacement Considerations

The AD7933BRUZ serves as a pin-compatible alternative offering 10-bit resolution. For higher channel counts, the AD7938/AD7939 series provides eight channels with similar speed characteristics. Verify interface timing and control register compatibility when substituting these devices.