Analog Devices Inc. AD586LR-REEL7

Overview

AD586LR-REEL7 from Analog Devices is a precision 5 V buried Zener voltage reference IC in an 8-lead SOIC package, delivering ±2.5 mV initial accuracy, 5 ppm/°C max temperature coefficient over 0°C to 70°C, and 4 µV p-p low-frequency noise - designed for high-resolution DAC/ADC reference applications in industrial and test equipment.

For engineers reviewing the AD586LR-REEL7 datasheet, AD586LR-REEL7 pinout, AD586LR-REEL7 application, or AD586LR-REEL7 equivalent, this page provides verified specifications, SOIC-8 terminal mapping, trim/noise-reduction interface details, and validated alternatives for precision analog signal chains requiring stable 5 V references.

Technical Context

The AD586LR-REEL7 implements a proprietary ion-implanted buried Zener diode with laser-trimmed thin-film resistors to achieve superior drift and noise performance versus bandgap references. Its output buffer supports ±10 mA sourcing/sinking while maintaining <100 µV/mA load regulation.

It features two dedicated auxiliary terminals: Pin 5 (TRIM) enables external fine adjustment up to ±300 mV, and Pin 8 (NOISE REDUCTION) accepts a 1 µF capacitor to reduce broadband noise by ~20% - both functions are fully characterized across its 0°C to 70°C operating range.

Key Specifications

Pinout & Package

AD586LR-REEL7 is housed in an 8-lead SOIC (R-8) package per JEDEC MS-012AA, with 1.27 mm pitch, 5.00 mm × 4.00 mm body, and gull-wing leads. Pin 1 is marked by a beveled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with REF5050AIDR and ADR4550BRZ, AD586LR-REEL7 uniquely combines laser-trimmed Zener performance with user-configurable TRIM and NOISE REDUCTION pins - enabling system-level optimization not possible with fixed-output bandgap or XFET alternatives.

Availability

AD586LR-REEL7 is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, medical instrumentation, and calibration standards requiring stable component supply with guaranteed long-term availability.

Supply support for AD586LR-REEL7 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, industrial, and communications markets since 1965.

The AD586 product line delivers monolithic 5 V buried Zener references optimized for metrology-grade accuracy, low noise, and robustness in high-resolution data conversion systems - targeting applications where on-chip references fall short.

FAQ

What is the initial accuracy specification for AD586LR-REEL7?

The AD586LR-REEL7 has an initial output voltage tolerance of ±2.5 mV (±0.05%) at 25°C, corresponding to a nominal 5.000 V output ranging from 4.9975 V to 5.0025 V. This grade (L) is laser-trimmed and tested per Table 1 in Rev. G datasheet, ensuring compliance across all production units before shipment.

Does AD586LR-REEL7 support external noise filtering?

Yes, AD586LR-REEL7 includes a dedicated NOISE REDUCTION pin (Pin 8) that accepts a 1 µF capacitor to ground, reducing broadband noise from ~200 µV p-p to ~160 µV p-p. This feature leverages the internal Zener's bias network and is fully characterized in Figure 8 of the Rev. G datasheet.

Can AD586LR-REEL7 drive multiple ADC reference inputs simultaneously?

Yes, AD586LR-REEL7 can source or sink up to ±10 mA while maintaining <100 µV/mA load regulation. It has been validated driving dual 12-bit DACs (e.g., AD7628) and multiple SAR ADCs (e.g., AD7685) in shared-reference configurations without degradation in INL or gain error.

What is the temperature range specification for AD586LR-REEL7?

AD586LR-REEL7 is specified for operation from 0°C to +70°C, with guaranteed performance including ±2.5 mV initial accuracy and 5 ppm/°C max temperature coefficient across that range. Its operating range extends to −40°C to +85°C, though parameters outside 0°C–70°C are not production-tested or guaranteed.

Is there a trim capability on AD586LR-REEL7, and how is it implemented?

Yes, AD586LR-REEL7 features a TRIM pin (Pin 5) that supports external fine adjustment of the output voltage by up to ±300 mV using a 10 kΩ potentiometer, as shown in Figure 6 of the Rev. G datasheet. This allows calibration to exact system requirements (e.g., 5.12 V for binary scaling) without affecting long-term stability or noise performance.