AD7243ARZ-REEL

Overview

The AD7243ARZ-REEL is a 12-bit voltage output digital-to-analog converter (DAC) from Analog Devices, fabricated on LC2MOS CMOS technology. It integrates an output amplifier and a Zener voltage reference on a single monolithic chip, eliminating the need for external trimming. The device supports serial data input rates up to 5 MHz, enabling a DAC update rate of 300 kHz. It offers selectable output ranges including 0 V to +5 V, 0 V to +10 V, and ±5 V via internal gain resistor configuration. The part operates with supply voltages ranging from +10.8 V to +16.5 V and features a 3-wire serial interface with daisy-chain capability.

Feature Summary

• Integrated 12-bit DAC with on-chip 5 V Zener reference and buffered output amplifier
• Serial interface supporting 300 kHz update rate with daisy-chain output (SDO)
• Selectable output ranges: 0 V to +5 V, 0 V to +10 V, or ±5 V
• Low power dissipation of 100 mW typical with settling time of 10 µs max

Applications

• Process control systems
• Industrial automation
• Digital signal processing systems
• Input/output ports

Procurement Notes

Verify that the REEL suffix indicates tape-and-reel packaging suitable for automated assembly, distinct from the tube-packaged AD7243ARZ. Confirm the specific grade (A or B) matches the required accuracy specifications, as relative accuracy varies between ±1 LSB and ±1/2 LSB. Ensure the ordering documentation explicitly states the package type is 16-SOIC and the temperature range aligns with industrial requirements (-40°C to +85°C).

Selection Notes

Select this component when a complete, trimmed 12-bit DAC with integrated reference is required to minimize board space. Choose the bipolar ±5 V range only if dual supplies are available; otherwise, use unipolar configurations. Verify that the system clock can support the 5 MHz SDIN rate to achieve the maximum 300 kHz update rate. Consider the daisy-chain feature if multiple DACs are needed in the design.

Part Context

The AD7243 belongs to the DACPORT family of analog-to-digital and digital-to-analog converters. The ARZ designation typically denotes the RoHS-compliant version in the 16-lead SOIC package. The -REEL suffix specifies the reel packaging format, distinguishing it from the tube-packaged standard variant while maintaining identical electrical characteristics and pinout.

Replacement Considerations

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