AD680JRZ

Overview

The AD680JRZ is a band gap voltage reference providing a fixed 2.5 V output from input voltages between 4.5 V and 36 V. It features a maximum quiescent current of 250 μA and an initial accuracy of ±10 mV (±0.4%). The temperature coefficient is 25 ppm/°C over the 0°C to 70°C operating range. Noise performance includes 10 μV p-p from 0.1 Hz to 10 Hz and 250 nV/√Hz wideband spectral density. It operates with a load current up to 10 mA and is housed in an 8-lead SOIC package.

Feature Summary

• Laser trimmed for high initial accuracy and low temperature drift without external components
• Low noise characteristics suitable for precision data converter applications
• Integrated temperature output pin on 8-lead packages enables transducer configuration
• Operates at very low quiescent current while maintaining excellent DC stability

Applications

• Reference for ADCs and DACs requiring external precision voltage sources
• Voltage regulator for portable equipment and battery-operated meters
• Differential temperature transducer circuits using the dedicated TEMP pin
• Low power, low voltage reference systems running on single 5 V supplies

Procurement Notes

Verify the specific suffix 'Z' indicates Pb-free compliance as defined in the ordering guide. Confirm the 'JR' designation corresponds to the 0°C to 70°C industrial temperature range and ±0.4% initial accuracy grade. Ensure the 8-lead SOIC package option matches the required footprint. Cross-reference the datasheet revision H specifications against the component marking to ensure consistency with the stated electrical parameters.

Selection Notes

Select this component when a stable 2.5 V reference is needed with minimal supply current consumption. The 8-lead package provides a temperature output pin not available in other form factors. Consider the 0°C to 70°C operating range limits compared to the -40°C to +85°C AN/AR grades if environmental conditions require wider thermal coverage. The device offers superior dynamic load regulation compared to incomplete references.

Part Context

The AD680 series utilizes a patented band gap architecture merging the amplifier and core functions for compact design. It serves as a complete precision reference solution, often replacing standard on-chip references in ADCs and DACs for improved performance. The family includes variants in PDIP, SOIC, and TO-92 packages, with the JRZ variant specifically offering surface-mount compatibility for automated assembly processes.

Replacement Considerations

AD680JR is the direct non-Pb-free equivalent.