AD589JH

Voltage Reference Overview

The AD589JH is a two-terminal, temperature-compensated band gap voltage reference providing a fixed 1.23 V output. It operates within an input current range of 50 µA to 5 mA and features a maximum temperature coefficient of 100 ppm/°C over the 0°C to +70°C operating range. The device exhibits a dynamic output impedance of 0.6 Ω and RMS noise voltage of 5 µV between 10 Hz and 10 kHz. It is housed in a hermetic metal can (TO-51) package.

Voltage Reference Feature Summary

• Two-terminal shunt regulator design requiring no external frequency compensation
• Low power operation suitable for battery-powered applications
• Active circuitry provides low output impedance for stable performance under varying load conditions

Voltage Reference Applications

• Reference source for CMOS analog-to-digital converters
• Precision reference for CMOS multiplying digital-to-analog converters
• Battery-operated portable instrumentation

Voltage Reference Procurement Notes

Verify the specific suffix 'H' confirms the hermetic metal can package configuration. Confirm that the J grade meets the required 100 ppm/°C temperature coefficient specification for the intended operational environment. Ensure input current limits remain within the 50 µA to 5 mA range to maintain specified accuracy.

Voltage Reference Selection Notes

Select this component when a low-cost, two-terminal reference is required for general-purpose precision applications. The J grade offers a balance of performance and cost for commercial temperature ranges. Consider higher grades like MH or SH if tighter temperature coefficients or extended industrial temperature ranges are necessary.

Voltage Reference Part Context

The AD589 series includes multiple grades with varying temperature coefficients and operating ranges. The AD589JH specifically denotes the J grade with a 100 ppm/°C coefficient in the commercial temperature range, packaged in a hermetic metal can. Other variants include SOIC packages and military-grade options with lower temperature coefficients.

Voltage Reference Replacement Considerations

The datasheet identifies the AD589 as a superior replacement for other generic 1.2 V references due to improved temperature performance and reduced capacitive loading sensitivity. No specific substitute part numbers are listed in the provided documentation.