AD667JN

Overview

The AD667JN is a microprocessor-compatible 12-bit digital-to-analog converter featuring a complete voltage output function on a single chip. It integrates a high-stability buried Zener voltage reference and a double-buffered input latch to prevent spurious output transitions during data updates. The device utilizes precision bipolar current steering switches and a laser-trimmed thin-film resistor network, ensuring fast settling times of up to 4 μs to 0.01% accuracy. Designed for operation with ±12 V or ±15 V supplies, it offers TTL/5 V CMOS compatible logic inputs with low current consumption, making it suitable for systems requiring high linearity and monotonicity over the commercial temperature range.

Feature Summary

• 12-bit resolution with guaranteed monotonicity over the full operating temperature range (0°C to +70°C).
• Integrated high-stability buried Zener reference and double-buffered input latch for glitch-free operation.
• Fast settling time of 3 μs typical (4 μs max) to 0.01% of full scale with standard feedback configurations.
• TTL/5 V CMOS compatible digital inputs with low logic input currents.

Applications

• Microprocessor-based data acquisition systems requiring precise analog control.
• Programmable power supplies and signal generators.
• Industrial process control loops utilizing 8-bit or 12-bit bus interfaces.

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified secondary market suppliers. Confirm the package type matches the 28-pin Plastic DIP (N-28) specification. Check manufacturing date codes and lot traces if long-term reliability or specific calibration standards are required for the application.

Selection Notes

Select the AD667JN when a commercial grade (0°C to +70°C) 12-bit DAC with integrated reference is needed. Choose this model over the AD667KN if the ±1/2 LSB linearity specification is sufficient for the system requirements. Ensure the design accommodates the required ±12 V or ±15 V dual power supplies and the 28-PDIP footprint.

Part Context

The AD667 series comprises various grades and packages from Analog Devices, including ceramic DIP and PLCC options. The JN suffix specifically denotes the commercial temperature range variant housed in a 28-lead Plastic Dual In-Line Package. Other variants like the AD667AD offer extended temperature ranges in ceramic packages, while the AD667KN provides tighter linearity specifications.

Replacement Considerations

The AD667JNZ is listed as a direct replacement for the AD667JN. Verify that the lead-free or RoHS-compliant status of the substitute meets regulatory requirements for the target assembly.