AD7849CRZ

Overview

The AD7849CRZ is a 16-bit serial input multiplying digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It operates with analog supply voltages of ±14.25 V to ±15.75 V and a digital supply of 4.75 V to 5.25 V. The device features a versatile three-wire serial interface, guaranteed monotonicity over temperature, and an output that clears to 0 V during power-up or power-down sequences. It utilizes a resistor string architecture with a 16-segment switch matrix to ensure linearity.

Feature Summary

• 16-bit resolution with guaranteed monotonicity over the operating temperature range
• Versatile serial interface supporting standalone and daisy-chain configurations via SDIN, SCLK, SYNC, and SDOUT pins
• Internal voltage monitor clamps VOUT to 0 V during power transitions to prevent uncontrolled actuator movement
• Configurable coding via BIN/COMP pin for straight binary or two's complement formats

Applications

• Industrial process control systems requiring precise analog signal generation
• PC analog I/O boards for data acquisition and control
• Instrumentation equipment needing stable, high-resolution voltage outputs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as historical documentation may vary. Check for moisture sensitivity level (MSL) handling requirements prior to soldering. Ensure supply voltage ranges match system design specifications before integration.

Selection Notes

Select the AD7849CRZ when 16-bit resolution and serial connectivity are required. Compare against the AD7849AR if 14-bit resolution suffices for the application. Consider the AD7849BRZ for alternative grade specifications. Verify that the external reference voltage range aligns with the VREF+ and VREF− input constraints of ±5 V to ±15 V relative to supplies.

Part Context

The AD7849 series includes variants such as the AD7849AR (14-bit), AD7849BR, and AD7849CR. The 'C' designation typically indicates commercial temperature range performance within the specified limits. The 'RZ' suffix denotes a lead-free, RoHS-compliant SOIC-20 package variant. This part belongs to the broader family of multiplying DACs designed for precision applications.

Replacement Considerations

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