AD7933BRUZ

Overview

The AD7933BRUZ is a 10-bit, high-speed successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. 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 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. The parallel interface allows direct connection to 3 V or 5 V processors via the VDRIVE function.

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 options for external reference overdrive.
• 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 low-power SAR ADC technology.
• Data acquisition modules interfacing with microprocessors or DSPs via parallel buses.

Procurement Notes

Verify the specific revision status and manufacturing lot details against the latest Analog Devices documentation before integration. Ensure that the ordering suffix corresponds to the required packaging format, such as tube or reel, as indicated in the manufacturer's official ordering guide. Confirm compatibility with system voltage levels and thermal requirements during the procurement phase.

Selection Notes

Select the AD7933BRUZ when a 10-bit resolution and 1.5 MSPS throughput are sufficient for the application. Consider this component for designs requiring flexible analog input configurations and low power dissipation. Evaluate the need for the internal reference versus an external precision reference based on system accuracy requirements and board space constraints.

Part Context

The AD7933BRUZ belongs to the AD7933/AD7934 family of 4-channel, 1.5 MSPS parallel ADCs. It is the 10-bit variant of the series, while the AD7934 offers 12-bit resolution. Both devices share identical pinouts, interfaces, and functional characteristics, differing primarily in resolution and associated DC accuracy specifications such as integral nonlinearity and offset error.

Replacement Considerations

The AD7934BRUZ serves as a direct pin-compatible replacement offering higher 12-bit resolution. For applications requiring serial interfaces instead of parallel, the AD7914 or AD7993 families provide similar channel counts but utilize SPI or I2C protocols respectively.