AD1674AR-REEL

Overview

The AD1674AR-REEL is a monolithic 12-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates with a sampling rate of 100 kSPS and features an integrated sample-and-hold amplifier (SHA) that supports the full Nyquist bandwidth without requiring additional wait states. The device utilizes a successive approximation register (SAR) architecture and accepts single-ended inputs across four calibrated ranges: 0 V to +10 V, 0 V to +20 V, ±5 V, and ±10 V. It requires +5 V logic supply and ±12 V or ±15 V analog supplies. The component is housed in a 28-lead plastic SOIC package and is specified for operation within the -40°C to +85°C temperature range.

Feature Summary

• Integrated SHA supporting full Nyquist bandwidth
• Industry standard pinout compatible with AD574A/AD674A
• Flexible digital interface with three-state output buffers
• Fully specified for AC and DC parameters

Applications

• Signal processing systems
• Traditional DC measurement applications
• Industrial data acquisition

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Ensure power supply requirements (+5 V logic, ±12 V/±15 V analog) match the system design. Confirm ESD handling procedures are followed during installation due to device sensitivity.

Selection Notes

Select this component when a 12-bit resolution at 100 kSPS is required with industry-standard pin compatibility. Consider the AD1674AR-REEL for designs needing integrated reference and clock circuitry. Verify input voltage ranges align with the four supported calibrated spans. Check thermal specifications if operating near the upper limit of the industrial temperature range.

Part Context

The AD1674 series includes multiple temperature grades and packages. The 'A' grade specifies operation from -40°C to +85°C. The 'R' suffix indicates a plastic SOIC package. Other variants include ceramic DIP options and different temperature ratings such as the J/K grades (0°C to +70°C) and T grade (-55°C to +125°C).

Replacement Considerations

The AD1674 is pin-compatible with the AD574A and AD674A. When substituting, verify that the replacement device meets the required 12-bit resolution, 100 kSPS speed, and input voltage range specifications.