AD1674JRZ-REEL

Overview

The AD1674JRZ-REEL is a monolithic 12-bit, 100 kSPS analog-to-digital converter manufactured by Analog Devices Inc. It utilizes a successive approximation register (SAR) architecture and features an integrated sample-and-hold amplifier (SHA). The device operates with a +5 V logic supply and ±12 V to ±15 V analog supplies, dissipating up to 575 mW. It provides a parallel digital interface compatible with 8- and 16-bit microprocessors. Key electrical specifications include a typical signal-to-noise and distortion ratio of 70 dB, full power bandwidth of 1 MHz, and integral nonlinearity of ±1/2 LSB for the J grade.

Feature Summary

• Integrated Sample-and-Hold Amplifier supporting full Nyquist bandwidth without additional wait-states
• Industry standard pinout compatible with AD574A and AD674A
• On-chip 10 V reference with four calibrated input ranges: 0–10 V, 0–20 V, ±5 V, and ±10 V
• Three-state output buffers allowing direct connection to most microprocessor buses

Applications

• Signal processing systems requiring AC and DC specifications
• Traditional DC measurement applications
• Industrial data acquisition systems
• Test and measurement instrumentation

Procurement Notes

Verify the specific temperature grade required for the application environment. The 'J' suffix indicates a commercial grade operating range of 0°C to +70°C. Ensure the ordering suffix matches the desired package type, as the JRZ designation corresponds to the plastic SOIC package. Confirm that the reel quantity aligns with production needs.

Selection Notes

Select the AD1674JRZ-REEL when a 12-bit resolution at 100 kSPS is required with a single-ended input. This model is suitable for designs needing a +5 V logic interface and dual analog supplies. Consider alternative grades such as the A or B series if operation below 0°C or above +70°C is necessary, as these are specified for wider industrial temperature ranges.

Part Context

The AD1674 belongs to a family of complete multipurpose 12-bit ADCs implemented using BiMOS II process technology. It combines high-performance bipolar analog circuitry with digital CMOS logic on a single die. The device is designed to replace older industry standards while offering faster conversion rates and integrated functionality, reducing external component count in data acquisition designs.

Replacement Considerations

The AD1674 is pin-compatible with the AD574A and AD674A. When substituting these legacy components, verify that the system timing requirements accommodate the AD1674's specific access times and control logic states.