Analog Devices Inc. AD584SH

Overview

AD584SH from Analog Devices is a MIL-STD-883B-compliant, hermetically sealed 8-pin TO-99 precision voltage reference IC with pin-programmable outputs of 10.000 V, 7.500 V, 5.000 V, or 2.500 V; laser-trimmed to ±15 mV initial tolerance at 5.000 V output and 30 ppm/°C max tempco over −55°C to +125°C; used as reference for 12-bit DACs and 14-bit ADCs in aerospace data acquisition systems.

For engineers reviewing the AD584SH datasheet, AD584SH pinout, AD584SH application, or AD584SH equivalent, this page delivers verified specifications, TO-99 package mapping, strobe-enabled power gating capability, 2-terminal negative reference operation, and real-world design constraints including load regulation (50 ppm/mA), turn-on settling (200 µs to 0.1%), and noise (50 µV p-p, 0.1 Hz–10 Hz).

Technical Context

The AD584SH implements a bandgap-referenced op-amp architecture with internal 1.215 V reference and programmable resistor ladder, enabling four discrete output voltages without external components. Its strobe terminal (Pin 5) provides TTL-compatible on/off control, reducing quiescent current from 1.0 mA to ~100 µA in off-state.

It supports both 3-terminal regulation and 2-terminal Zener-mode operation (for −5 V, −7.5 V, or −10 V negative references), with output capable of sourcing or sinking up to 5 mA across full temperature range and maintaining 0.2 Ω typical output impedance in standard mode.

Key Specifications

Pinout & Package

AD584SH is housed in an 8-pin hermetically sealed TO-99 metal can (package option H-08), with tab connected to Pin 4 (COMMON). The package provides robust thermal performance (θ_JA = 150°C/W) and ESD protection suitable for high-reliability military/aerospace environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5025MDREP and ADR445TRZ-EP, AD584SH trades lower absolute tempco and noise for unique flexibility: pin-selectable outputs, strobe-gated power control, and 2-terminal negative reference capability - all in a hermetically sealed, MIL-STD-883B-qualified TO-99 package essential for mission-critical deployment.

Availability

AD584SH is available at Aetrix Electronics and suitable for aerospace data acquisition, military avionics power monitoring, and space-qualified sensor signal conditioning requiring stable component supply under extended temperature and radiation-hardened conditions.

Supply support for AD584SH 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, aerospace, and industrial markets since 1965.

The AD584 product line was designed specifically for high-reliability applications demanding programmable, temperature-stable voltage references in harsh environments - emphasizing laser trimming, hermetic packaging, and MIL-STD-883B compliance.

FAQ

What output voltages does the AD584SH support, and how are they selected?

The AD584SH supports four precise output voltages: 10.000 V, 7.500 V, 5.000 V, and 2.500 V. Selection is accomplished by connecting specific pins - for example, tying Pin 2 (5.0 V tap) to Pin 1 (output) configures 5.000 V operation. No external resistors are required for these standard outputs. The AD584SH datasheet Table 4 defines all valid pin-strapping combinations, and its internal laser-trimmed resistor ladder ensures accuracy across the −55°C to +125°C range.

Is the AD584SH compatible with MIL-STD-883B testing requirements?

Yes, the AD584SH/883B variant is explicitly qualified to MIL-STD-883B, including tests for mechanical shock, vibration, temperature cycling, and hermeticity. This qualification applies to the AD584SH/883B ordering option - not the base AD584SH - and confirms suitability for defense and space applications where reliability under extreme environmental stress is mandatory. The TO-99 metal-can package contributes directly to this qualification.

Can the AD584SH generate negative reference voltages, and if so, how?

Yes, the AD584SH can operate in 2-terminal Zener mode to produce precision negative references: −5.0 V, −7.5 V, or −10.0 V. This is achieved by connecting Pin 8 (V+) and Pin 1 (output) together to system ground, then routing the negative supply through a current-limiting resistor to Pin 4 (COMMON), which becomes the output node. The AD584SH maintains its specified tempco and stability in this configuration, though output impedance rises from 0.2 Ω to 2 Ω.

What is the function of the STROBE pin (Pin 5) on the AD584SH, and what drive capability does it require?

The STROBE pin (Pin 5) on the AD584SH enables TTL-compatible on/off control of the output voltage: pulling Pin 5 below 200 mV forces V_OUT to zero and reduces quiescent current to ~100 µA. The driving circuit must sink ≥500 µA continuously and tolerate up to AD584SH's output voltage plus 1 V. A simple NPN transistor (e.g., 2N2222) with base resistor is sufficient, as shown in Figure 11 of the AD584SH datasheet.

How does the AD584SH's output current capability vary with temperature and load?

The AD584SH delivers ±5 mA sourcing or sinking capability across its full −55°C to +125°C operating range. At 25°C, it can source up to 10 mA, but this de-rates linearly with temperature. Load regulation is specified at 50 ppm/mA maximum for 0–5 mA loads - meaning a 5 mA load shift causes ≤0.25 mV change in 5.000 V output. Output remains stable even with reverse current transients, provided total current stays within ±5 mA limits.