AD7834BRZ

Overview

The AD7834BRZ is a monolithic quad 14-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It utilizes LC2MOS technology and features voltage outputs with a maximum span of 14 V, ranging from ±8.192 V. The device employs serial input loading via DIN, SCLK, and FSYNC pins, supporting up to 32 individually addressed units through five dedicated package address pins (PA0–PA4). It includes a power-on reset function and an asynchronous clear input for user-defined voltage setting. The component operates within an industrial temperature range of −40°C to +85°C and is housed in a 28-lead SOIC surface-mount package.

Feature Summary

• Four 14-bit DACs integrated on a single monolithic chip
• Serial data interface with MSB-first 16-bit format after two leading zeros
• Maximum output voltage span of 14 V with ±8.192 V range
• User-assigned device addressing allowing multipackage expansion

Applications

• Process control systems
• Automatic test equipment
• General-purpose instrumentation

Procurement Notes

Verify the specific suffix 'BRZ' against the manufacturer's current ordering guide to confirm package type and compliance status. Ensure supply chain sources provide valid traceability documentation. Confirm that the component meets the required industrial temperature specifications for the intended operational environment.

Selection Notes

Select the AD7834BRZ when a serial interface is preferred over parallel loading. Verify that the system requires four independent 14-bit channels with buffered voltage outputs. Ensure the design accommodates the necessary dual analog power supplies (±12 V or ±15 V) and a 5 V logic supply. Confirm that the serial timing parameters meet the microprocessor interface requirements.

Part Context

The AD7834 series belongs to Analog Devices' LC2MOS family of high-performance data converters. The AD7834 variant specifically provides serial input capability, distinguishing it from the AD7835 which supports parallel loading. Both devices share similar accuracy and architecture but differ in data transfer methods and pin configurations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.