AD7835ASZ-REEL

Overview

The AD7835ASZ-REEL is a quad 14-bit digital-to-analog converter (DAC) from Analog Devices, utilizing LC2MOS technology. It features parallel data loading with support for both 14-bit straight words and double-byte (8-bit/6-bit) formats. The device provides four voltage outputs with a maximum span of 14 V and ranges of ±8.192 V. Key specifications include a typical output settling time of 10 μs, relative accuracy of ±1 LSB (B grade), and power supply sensitivity of 110 dB. It operates on dual analog supplies (±15 V or ±12 V) and a single 5 V logic supply.

Feature Summary

• Quad 14-bit DAC architecture with parallel input interface supporting 14-bit or byte-shifted modes
• Output voltage range up to ±8.192 V with a maximum span of 14 V
• Power-on reset function holds outputs within ±2 V of Device Sense Ground (DSG) during startup
• Asynchronous CLR input forces all outputs to the DSG potential

Applications

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

Procurement Notes

Verify the ASZ suffix indicates a lead-free RoHS-compliant MQFP package. Confirm the REEL suffix denotes tape-and-reel packaging. Check current availability status as this component may be subject to discontinuation or lifecycle changes.

Selection Notes

Select the AD7835 over the AD7834 when parallel data interfaces are required rather than serial loading. Ensure the application supports the 44-lead MQFP footprint. Verify that the system can provide separate reference inputs for DAC pairs A and B if independent scaling is needed.

Part Context

This part belongs to the AD7834/AD7835 family of LC2MOS quad DACs. While the AD7834 utilizes serial input, the AD7835 variant specifically supports parallel data loading. Both share similar accuracy grades (A, B, S) and thermal characteristics, differing primarily in their digital interface architecture.

Replacement Considerations

Public confirmed substitute part numbers: None.