AD7849CR-REEL

Overview

The AD7849CR-REEL is a 16-bit serial input multiplying digital-to-analog converter (DAC) from Analog Devices. It features guaranteed monotonicity over the specified temperature range and versatile serial interface control via three lines. The device includes internal output control during power-up and power-down sequences, clamping VOUT to 0 V. It supports both unipolar and bipolar output ranges, clearing to 0 V in either configuration. The part operates with analog supplies of ±14.25 V to ±15.75 V and a digital supply of 4.75 V to 5.25 V. Key electrical parameters include a typical settling time of 7 μs to 0.006% FSR and a maximum differential nonlinearity of ±0.5 LSB.

Feature Summary

• 16-bit resolution with guaranteed monotonicity over temperature
• Versatile 3-wire serial interface supporting daisy-chain mode
• Internal output clamp to 0 V during power transitions
• Configurable binary or two's complement coding

Applications

• Industrial process controls
• PC analog I/O boards
• Instrumentation systems

Procurement Notes

Verify the specific grade suffix 'C' corresponds to the required accuracy specifications, such as ±4 LSB relative accuracy at 25°C. Confirm the '-REEL' suffix indicates tape-and-reel packaging for automated assembly. Ensure the ordering document matches the Rev. C datasheet requirements for pinout and electrical characteristics.

Selection Notes

Select this component when 16-bit precision and serial connectivity are required. The C grade offers ±0.5 LSB max DNL. Consider the external reference voltage range of VSS + 6 V to VDD - 6 V. Ensure the system can provide the necessary ±15 V analog supplies and 5 V digital supply. Check if daisy-chain capability is needed for multi-channel applications.

Part Context

The AD7849 series includes A, B, and C grades with varying resolutions and accuracies. The CR variant specifically denotes the C grade with 16-bit resolution and SOIC/SMD packaging options. It belongs to the broader family of multiplying DACs designed for high-precision analog signal generation in industrial environments.

Replacement Considerations

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