AD7934BRUZ

Overview

The AD7934BRUZ is a 12-bit, high-speed, low-power successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V supply and supports throughput rates up to 1.5 MSPS. The device features four analog input channels with a built-in channel sequencer, allowing for software-configurable single-ended, fully differential, or pseudo-differential inputs. It includes an accurate on-chip 2.5 V reference and utilizes a high-speed parallel interface compatible with word or byte modes. The component is housed in a 28-lead TSSOP package.

Feature Summary

• Four analog input channels with integrated channel sequencer
• Software-selectable single-ended, fully differential, or pseudo-differential input configurations
• Accurate on-chip 2.5 V voltage reference source
• High-speed parallel interface supporting word and byte transfer modes

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation utilizing low power consumption modes
• Data acquisition modules interfacing with microprocessors or DSPs
• Medical equipment requiring precise signal conversion

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct packaging and temperature grade. Confirm that the VDRIVE pin voltage matches the target processor logic levels for proper parallel interface operation. Check for RoHS compliance status if required by local regulations.

Selection Notes

Select the AD7934BRUZ when 12-bit resolution and 1.5 MSPS throughput are required for multi-channel applications. Consider the AD7933 variant if 10-bit resolution is sufficient for the application. Ensure the system design accommodates the 28-lead TSSOP package dimensions and thermal requirements specified in the outline dimensions section.

Part Context

The AD7934 is part of the AD793x family of SAR ADCs, which also includes the AD7933 (10-bit), AD7938, and AD7939 (8-channel variants). These devices share similar architectural features such as the track-and-hold amplifier and control register structure, differing primarily in resolution and channel count.

Replacement Considerations

The AD7933BRUZ serves as a lower-resolution alternative within the same package. For higher channel counts, the AD7938BRUZ or AD7939BRUZ may be considered, though they utilize different pinouts.