Analog Devices Inc. AD589SH/883B

Overview

AD589SH/883B from Analog Devices is a 2-terminal, MIL-STD-883-compliant shunt voltage reference delivering a precise 1.23 V output over –55°C to +125°C, with 100 ppm/°C max temperature coefficient, 0.6 Ω dynamic output impedance, and operation down to 50 µA input current. It serves as a stable low-power reference in precision analog signal chains for aerospace and defense instrumentation.

For engineers reviewing the AD589SH/883B datasheet, AD589SH/883B pinout, AD589SH/883B application, or AD589SH/883B equivalent, key selection considerations include its hermetic metal-can (H-02) packaging, wide temperature range compliance, low-noise 5 µV RMS (10 Hz–10 kHz), and suitability for battery-powered or high-reliability systems requiring unbuffered 1.2 V references without external compensation.

Technical Context

The AD589SH/883B implements a band gap-based 2-terminal shunt architecture with active circuitry that achieves 10× lower output impedance than conventional Zener diodes. Its thermal tracking relies on matched on-chip bipolar components fabricated using Analog Devices' precision thin-film process.

It operates bidirectionally - usable as positive, negative, or floating reference - and maintains full accuracy across 50 µA–5 mA input current without frequency compensation. Turn-on settling to ±0.1% occurs in 25 µs, with no thermal tail, enabling rapid power cycling in portable or intermittent-use systems.

Key Specifications

Pinout & Package

AD589SH/883B is housed in a hermetically sealed 2-pin metal can package (TO-51 / H-02), with axial leads suitable for through-hole mounting and high-reliability environments. The device has no polarity marking; either terminal may serve as anode or cathode depending on circuit configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Compared with LM385BH-1.2/883 and REF102HS/883B, the AD589SH/883B uniquely combines true 2-terminal simplicity, hermetic MIL-STD-883B compliance, sub-1 Ω output impedance, and 100 ppm/°C TC in a single H-02 package - making it the only option for space-constrained, ultra-low-power, high-stability shunt reference designs across extended temperature.

Availability

AD589SH/883B is available at Aetrix Electronics and suitable for aerospace instrumentation, ruggedized data acquisition, and high-reliability industrial control systems requiring stable component supply with full traceability and long-lifecycle support.

Supply support for AD589SH/883B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD589 product line delivers cost-effective, temperature-stable 2-terminal shunt references optimized for battery-powered, high-reliability, and wide-temperature applications - emphasizing simplicity, low power, and robustness over complex interface features.

FAQ

What is the operating temperature range of the AD589SH/883B?

The AD589SH/883B is rated for continuous operation from –55°C to +125°C. This extended range is validated per MIL-STD-883B test methods, including temperature cycling and steady-state life testing, ensuring reliability in aerospace, downhole, and military vehicle environments where thermal extremes are routine. The AD589SH/883B maintains its 1.235 V nominal output and 100 ppm/°C max temperature coefficient across this full span.

Is the AD589SH/883B a pin-compatible replacement for standard 1.2 V Zener diodes?

The AD589SH/883B is a functional 2-terminal replacement for 1.2 V Zeners but is not electrically identical: it exhibits 0.6 Ω dynamic output impedance (vs. ~10–100 Ω for Zeners), lower noise (5 µV RMS), and tighter voltage tolerance. While it fits the same H-02 socket, circuit analysis must confirm current-source compliance and transient load behavior - the AD589SH/883B does not require external capacitance for stability, unlike many Zeners.

Does the AD589SH/883B require external capacitors for stability?

No, the AD589SH/883B requires no frequency compensation or external capacitors to maintain accuracy. Its internal design ensures stability with stray capacitances ≤20 pF or ≥1 µF. For ultralow-noise applications, a 1000 pF shunt capacitor is recommended - but this is for noise reduction, not stability. The AD589SH/883B remains fully functional and accurate across its entire 50 µA–5 mA operating range without any external components.

How does MIL-STD-883B compliance impact the AD589SH/883B's use in commercial designs?

MIL-STD-883B compliance certifies that each AD589SH/883B unit undergoes rigorous screening - including burn-in, thermal shock, and hermeticity testing - ensuring superior long-term reliability and reduced infant mortality. Commercial designs benefit from this proven robustness in harsh environments (e.g., automotive under-hood, industrial motor drives), even without formal military procurement requirements. The AD589SH/883B's H-02 package and tested performance make it ideal for mission-critical commercial deployments.

Can the AD589SH/883B be used as a negative reference voltage source?

Yes, the AD589SH/883B operates bidirectionally and can function as a negative reference: connect its terminals in reverse polarity relative to the circuit ground, enabling generation of a stable –1.23 V reference. This is explicitly supported in Analog Devices' application notes (e.g., Figure 8 in the AD589 datasheet) for use with multiplying DACs like the AD7533. The AD589SH/883B maintains full specification compliance in either orientation.