Analog Devices Inc. AD586KQ

Overview

AD586KQ from Analog Devices is a precision 5.000 V ±5 mV buried Zener voltage reference IC, rated for 0°C to 70°C operation in an 8-lead CERDIP (Q-8) package, with 15 ppm/°C max temperature coefficient, 100 nV/√Hz noise density, and ±100 µV/V line regulation - used as a stable reference for high-resolution DACs and ADCs in test equipment and data acquisition systems.

For engineers reviewing the AD586KQ datasheet, AD586KQ pinout, AD586KQ application, or AD586KQ equivalent, this page delivers verified specifications, validated pin functions, real-world converter interface use cases, and two confirmed alternative references - all grounded in Analog Devices Rev. G documentation and official ordering guide data.

Technical Context

The AD586KQ employs a proprietary ion-implanted buried Zener diode combined with laser-trimmed thin-film resistors to achieve low drift and low noise without external compensation. Its internal buffer amplifier supports sourcing or sinking up to 10 mA while maintaining load regulation of ≤100 µV/mA over 0–10 mA.

It features dedicated TRIM (Pin 5) and NOISE REDUCTION (Pin 8) terminals enabling fine output adjustment and external 1 µF capacitor filtering to reduce broadband noise - design elements directly tied to its use in metrology-grade converter systems requiring sub-ppm stability.

Key Specifications

Pinout & Package

AD586KQ is housed in an 8-lead Ceramic Dual In-Line Package (CERDIP), compliant with JEDEC MS-012AA, with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is marked by a notch or dot; Pins 1, 3, and 7 are internal factory test points and must remain unconnected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR441BRZ and REF5050AID, AD586KQ offers unique TRIM and NOISE REDUCTION pins, full 10 mA sourcing/sinking capability, and CERDIP packaging for enhanced reliability - making it preferred for legacy designs, MIL-qualified systems, and applications needing field calibration or broadband noise suppression.

Availability

AD586KQ is available at Aetrix Electronics and suitable for precision instrumentation, automated test equipment, and calibration standards requiring stable component supply, long-term parametric consistency, and hermetic packaging integrity.

Supply support for AD586KQ 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, headquartered in Norwood, MA, with decades of expertise in precision reference and converter technologies.

AD586KQ belongs to the AD586 family of buried Zener voltage references designed specifically for metrology-grade applications demanding low drift, low noise, and field-calibratable output - targeting high-resolution data converters and calibration infrastructure.

FAQ

What is the guaranteed initial accuracy of AD586KQ?

The AD586KQ is specified for 5.000 V ±5 mV initial output voltage at 25°C, corresponding to ±1000 ppm (0.1%) tolerance. This specification is guaranteed across the 0°C to 70°C operating range and verified per Analog Devices Rev. G datasheet Table 1. The ±5 mV error remains valid under nominal supply (15 V) and load (0–10 mA) conditions, and forms the basis for system-level calibration of 12-bit and higher converters using AD586KQ.

Does AD586KQ support both sourcing and sinking current on its VOUT pin?

Yes, AD586KQ is explicitly rated to source or sink up to 10 mA on Pin 6 (VOUT) while maintaining specified load regulation (≤100 µV/mA). This bidirectional capability enables direct interfacing with converter reference inputs that may draw transient current during sampling, or with op-amp bias networks requiring sink paths. The short-circuit current to ground is 45–60 mA, confirming robust output stage design in AD586KQ.

Can AD586KQ be used in negative reference configurations?

Yes, AD586KQ can generate a precision −5.000 V output by connecting VIN to +6 V to +30 V, grounding VOUT, and tying GND (Pin 4) through a resistor to a negative supply (e.g., −15 V). Per Figure 19 in the Rev. G datasheet, this configuration maintains the same temperature coefficient and long-term stability as the standard +5 V mode, provided net device current stays between 2.5 mA and 10.0 mA - a validated topology for bipolar instrumentation using AD586KQ.

What is the purpose of the NOISE REDUCTION pin (Pin 8) on AD586KQ?

The NOISE REDUCTION pin (Pin 8) on AD586KQ provides a dedicated node to connect a 1 µF capacitor to ground, forming a low-pass filter with internal Zener resistances to suppress high-frequency noise. As documented in Figures 7–8 and Section "Noise Performance and Reduction", this reduces 1 MHz broadband noise from ~200 µV p-p to ~160 µV p-p without degrading DC accuracy - a critical feature for spectral purity in FFT-based measurement systems using AD586KQ.

Is AD586KQ pin-compatible with other AD586 grade variants?

Yes, AD586KQ shares identical 8-lead CERDIP (Q-8) pinout and electrical behavior with all other AD586 variants in the same package type, including AD586JQ, AD586LQ, and AD586TQ. Pin assignments - VIN (2), GND (4), TRIM (5), VOUT (6), and NOISE REDUCTION (8) - are consistent across grades. This allows drop-in replacement within the same package footprint when upgrading accuracy or temperature range, as confirmed by Analog Devices Rev. G Pin Configurations section and Ordering Guide.