Analog Devices Inc. AD586LRZ-REEL

Overview

AD586LRZ-REEL 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, 4 µV p-p (0.1–10 Hz) output noise, and ±10 mA output sourcing/sinking capability - used as a stable reference for 12- to 14-bit ADCs and DACs in test equipment and data acquisition systems.

For engineers reviewing the AD586LRZ-REEL datasheet, AD586LRZ-REEL pinout, AD586LRZ-REEL application, or AD586LRZ-REEL equivalent, this page delivers verified specifications, SOIC-8 terminal mapping, real-world converter interface use cases, and validated alternative references with documented performance trade-offs.

Technical Context

The AD586LRZ-REEL employs a proprietary ion-implanted buried Zener diode combined with laser-trimmed thin-film resistors to achieve low drift and low noise - outperforming bandgap references in both spectral density (100 nV/√Hz at 100 Hz) and long-term stability (15 ppm/1000 hr). Its internal buffer amplifier enables ±10 mA load drive without external components.

It features two dedicated auxiliary terminals: Pin 5 (TRIM) supports external fine adjustment up to ±6% gain offset, and Pin 8 (NOISE REDUCTION) accepts a 1 µF capacitor to reduce broadband noise by ~20% - both functions confirmed in Rev. G datasheet Figures 6 and 8.

Key Specifications

Pinout & Package

AD586LRZ-REEL 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 1.75 mm max height. Pins 1, 3, and 7 are factory test points - no connection permitted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADR445BRZ and REF5050AIDR, AD586LRZ-REEL trades minor initial accuracy for unique field-adjustable trim and dedicated noise-filtering functionality - making it optimal for systems requiring post-manufacture calibration or broadband noise suppression in mixed-signal signal chains.

Availability

AD586LRZ-REEL is available at Aetrix Electronics and suitable for automated test equipment, portable data acquisition, industrial PLC analog input modules, and calibration standards equipment requiring stable component supply and long-lifecycle support.

Supply support for AD586LRZ-REEL 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 design centers worldwide and ISO 9001-certified manufacturing.

The AD586 product line delivers monolithic buried Zener voltage references optimized for metrology-grade accuracy, low noise, and robust operation in test, measurement, and industrial control systems - targeting applications where on-chip references fall short.

FAQ

What is the maximum input voltage for AD586LRZ-REEL?

The AD586LRZ-REEL supports a VIN range of 10.8 V to 36 V DC. Absolute maximum rating is 36 V - exceeding this may cause permanent damage. Operation below 10.8 V risks loss of regulation; typical applications use +12 V or +15 V supplies to ensure headroom and stability across temperature and load conditions. The device remains functional down to 10.8 V, but line regulation degrades near the lower limit.

Does AD586LRZ-REEL support negative reference generation?

Yes, AD586LRZ-REEL can generate a precision −5.000 V output by reversing connections: tie VIN to ≥+6 V, ground VOUT, and connect GND (Pin 4) through a current-setting resistor RS to a −15 V rail. The −5 V appears at Pin 4. Net current through the device must stay between 2.5 mA and 10 mA to maintain specified tempco and stability - confirmed in Rev. G datasheet Figure 19.

Can AD586LRZ-REEL drive multiple ADCs simultaneously?

Yes, AD586LRZ-REEL can drive multiple ADC reference inputs concurrently. Its ±10 mA output capability and excellent load regulation (<100 µV/mA) allow direct connection to up to four 12-bit SAR ADCs (e.g., AD7980) without buffering. Layout best practice is star topology from VOUT to minimize ground bounce and crosstalk - verified in AD586 Rev. G application section "Using the AD586 with Converters".

What is the purpose of the TRIM pin (Pin 5) on AD586LRZ-REEL?

The TRIM pin (Pin 5) on AD586LRZ-REEL enables external fine adjustment of the output voltage by ±6% (±300 mV around 5 V) using a resistor divider network, as shown in Rev. G Figure 6. This allows system-level calibration to compensate for board-level errors or match a master reference - without affecting temperature coefficient or long-term stability, which remain within datasheet limits after trimming.

How does the NOISE REDUCTION pin (Pin 8) function on AD586LRZ-REEL?

The NOISE REDUCTION pin (Pin 8) on AD586LRZ-REEL connects to an external 1 µF capacitor to ground, forming a low-pass filter with internal Zener impedance to suppress high-frequency noise. This reduces 1 MHz broadband noise from ~200 µV p-p to ~160 µV p-p (Rev. G Figure 8), while preserving 0.1–10 Hz noise at 4 µV p-p - critical for high-resolution digitizer front-ends.