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Analog Devices Inc. AD586LQ
- Part No.:
- AD586LQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD586LQ.pdf
- Description:
- IC VREF SERIES 0.05% 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
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Product details
Overview
AD586LQ from Analog Devices is a precision 5.000 V buried Zener voltage reference IC with ±2.5 mV initial accuracy, 5 ppm/°C max temperature coefficient over 0°C to 70°C, and 100 nV/√Hz spectral noise density. It features noise reduction (Pin 8), output trim (Pin 5), and ±10 mA sourcing/sinking capability - used in high-resolution DAC/ADC reference circuits requiring stable 5 V excitation.
For engineers reviewing the AD586LQ datasheet, AD586LQ pinout, AD586LQ application, or AD586LQ equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative options for precision analog signal chains in test equipment, data acquisition, and industrial control systems.
Technical Context
The AD586LQ uses 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 stability and spectral purity. Its internal buffer amplifier enables ±10 mA load drive while maintaining <100 µV/mA load regulation.
It implements a dedicated noise reduction pin (Pin 8) that forms a low-pass filter with an external 1 µF capacitor, reducing broadband noise from ~200 µV p-p (1 MHz) to ~160 µV p-p. The TRIM pin (Pin 5) supports ±6% gain adjustment for system-level calibration to exact 5.000 V or binary-aligned values like 5.12 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±2.5 mV at 25°C - ensures ≤0.05% absolute error in 14-bit ADC full-scale reference. |
| Tempco | 5 ppm/°C max (0°C to 70°C) - guarantees ≤0.35 mV total drift across industrial ambient range. |
| Noise Density | 100 nV/√Hz at 100 Hz - enables sub-LSB noise floor in 16-bit SAR ADCs with proper filtering. |
| Load Drive | ±10 mA sourcing/sinking - supports direct driving of multiple DAC reference inputs without external buffers. |
| Line Regulation | ±100 µV/V (10.8–36 V input) - maintains stability despite unregulated supply rails in embedded power systems. |
| Long-Term Stability | 15 ppm/1000 hr - predicts <0.015% output shift per 1,000 hours, critical for metrology-grade instruments. |
Pinout & Package
AD586LQ is supplied in an 8-lead CERDIP (Q-8) package with 0.300-inch width, hermetically sealed ceramic body, and military-grade reliability per MIL-STD-883. Pin 1 is top-left corner when notch faces up; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7 | Factory Trim Pad (TP1) | No connection required - internal test points; floating pads must remain unconnected on PCB. |
| 2 | VIN | Input supply pin: accepts 10.8 V to 36 V DC; powers buried Zener and buffer amplifier. |
| 4 | GND | Analog ground reference - must be tied to clean system AGND plane with low-impedance path. |
| 5 | TRIM | Fine-adjust input: ±6% gain tuning via external resistor divider for system calibration or binary scaling. |
| 6 | VOUT | Regulated 5.000 V output - capable of sourcing/sinking ±10 mA with <100 µV/mA load regulation. |
| 8 | NOISE REDUCTION | Filter node: connects to 1 µF capacitor to GND to reduce high-frequency Zener noise by ~20%. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed buried Zener | Enables 5 ppm/°C tempco and 100 nV/√Hz noise - superior to bandgap alternatives in precision metrology. |
| Noise reduction pin (Pin 8) | Supports external 1 µF capacitor to cut 1 MHz noise from 200 µV p-p to 160 µV p-p without added op amps. |
| Output trim capability (Pin 5) | Allows ±6% fine adjustment for exact 5.000 V alignment or custom scaling (e.g., 5.12 V for 12-bit binary systems). |
| MIL-STD-883-compliant version | AD586LQ meets military screening standards including temperature cycling, burn-in, and hermeticity testing. |
| Industry-standard pinout | Direct drop-in replacement for legacy 5 V references (e.g., REF02, LM399) in existing SOIC/PDIP footprints. |
Applications
| High-Accuracy Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: 14-bit successive approximation ADC in portable environmental sensor logger with battery-powered supply. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion - sets full-scale range and defines LSB weight. Use Value: 5 ppm/°C tempco ensures <0.35 mV drift over 0–70°C ambient, preserving ±1 LSB accuracy without recalibration. |
Use Scenario: Multi-channel digital I/O card in rack-mounted ATE system requiring synchronized 5 V reference across 32 channels. IC Role / Device Role / Timing Role: Central reference source feeding parallel DACs and comparator thresholds. Use Value: ±10 mA drive capability eliminates need for external buffers, reducing board area and thermal drift sources. |
| Precision Current Source | Stacked Multi-Voltage Reference |
|
Use Scenario: Programmable current source for RTD excitation in industrial temperature transmitters. IC Role / Device Role / Timing Role: Stable 5 V reference controlling current through precision sense resistor. Use Value: 15 ppm/1000 hr long-term stability ensures <0.015% current drift over 1,000 hrs - meeting SIL-2 field reliability targets. |
Use Scenario: Triple-rail reference generator for 16-bit bipolar DAC requiring ±5 V and +10 V supplies. IC Role / Device Role / Timing Role: One AD586LQ per rail in stacked configuration - bottom device referenced to GND, middle to −5 V, top to −10 V. Use Value: Identical tempco and noise performance across all three rails minimizes inter-rail gain mismatch in differential output stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.000 V, 3 ppm/°C max, 4.5 µV p-p (0.1–10 Hz), SOIC-8 - lower tempco but higher 1/f noise than AD586LQ. | Preferred in battery-powered portable instruments where ultra-low drift dominates over noise floor. | Select REF5050IDR when tempco <3 ppm/°C is mandatory and 0.1–10 Hz noise is acceptable; AD586LQ preferred when broadband noise matters more. |
| ADR445BRZ | 5.000 V, 3 ppm/°C max, 1.8 µV p-p (0.1–10 Hz), SOIC-8 - lower noise than AD586LQ but no noise reduction pin or trim capability. | Suitable for fixed-gain, low-noise systems where calibration flexibility is unnecessary. | Choose ADR445BRZ for lowest 0.1–10 Hz noise in static reference designs; retain AD586LQ when field trim or noise filtering is required. |
Compared with REF5050IDR and ADR445BRZ, the AD586LQ uniquely combines factory-laser-trimmed buried Zener stability, user-accessible noise reduction, and ±6% output trim - making it the only option among the three supporting both high-precision calibration and adaptive noise management in deployed systems.
Availability
AD586LQ is available at Aetrix Electronics and suitable for high-reliability data acquisition, automated test equipment, and industrial process control requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AD586LQ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The AD586 product line delivers monolithic buried Zener voltage references optimized for metrology-grade accuracy, low noise, and long-term stability - targeting precision instrumentation, aerospace avionics, and calibration equipment.
FAQ
What is the maximum operating temperature range for the AD586LQ?
The AD586LQ is specified for operation from 0°C to +70°C, with guaranteed performance across this full range. Its temperature coefficient is rated at 5 ppm/°C max within this interval. While the device may function outside this range, output accuracy and stability are not assured beyond the specified limits - users requiring wider operation should consider AD586BQ (−40°C to +85°C) or AD586TQ (−55°C to +125°C). The AD586LQ itself remains fully functional and reliable within its 0°C to +70°C envelope.
Does the AD586LQ require external components to function as a basic 5 V reference?
No, the AD586LQ operates as a complete 5 V reference with only VIN (Pin 2) and GND (Pin 4) connections - no external capacitors or resistors are needed for nominal operation. The TRIM (Pin 5) and NOISE REDUCTION (Pin 8) pins are optional: TRIM enables ±6% fine adjustment, and NOISE REDUCTION accepts a 1 µF capacitor to ground for broadband noise filtering. These features enhance performance but are not required for basic functionality. The AD586LQ delivers 5.000 V ±2.5 mV directly from VOUT (Pin 6) under standard conditions.
Can the AD586LQ be used to generate a negative reference voltage?
Yes, the AD586LQ can be configured as a precision −5.000 V reference by reversing connections: tie VIN (Pin 2) to a positive supply (≥6 V), ground VOUT (Pin 6), and connect GND (Pin 4) through a current-setting resistor to a negative rail (e.g., −15 V). The −5 V output is then taken from Pin 4. This configuration maintains the same temperature coefficient and long-term stability as the standard +5 V mode, provided net current through the device stays between 2.5 mA and 10 mA. The AD586LQ's internal architecture supports this inversion without degradation.
What is the purpose of Pins 1, 3, and 7 on the AD586LQ?
Pins 1, 3, and 7 on the AD586LQ are internal factory trim pads (TP1) used during wafer-level laser trimming for initial accuracy and temperature coefficient calibration. These pins are not functional in end-user circuits and must remain unconnected - no traces, vias, or solder should contact them. The datasheet explicitly states "MAKE NO CONNECTIONS TO THESE POINTS" and recommends using only dummy PCB pads if mechanical support is needed. Connecting them risks altering calibration or damaging the device. The AD586LQ functions correctly with Pins 1, 3, and 7 left floating.
How does the noise reduction feature of the AD586LQ work, and what capacitor value is recommended?
The AD586LQ's noise reduction feature uses Pin 8 (NOISE REDUCTION) to form a low-pass filter with an external capacitor to ground, attenuating high-frequency noise from the buried Zener. A 1 µF capacitor is recommended: it creates a ~12 Hz 3 dB point with internal resistances, reducing 1 MHz broadband noise from ~200 µV p-p to ~160 µV p-p. This capacitor does not affect low-frequency (0.1–10 Hz) noise, which remains at ~4 µV p-p. The AD586LQ's internal circuitry is designed specifically for this 1 µF value - smaller capacitors yield less attenuation, larger ones increase turn-on time without meaningful additional benefit.
AD586LQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.05%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 4µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 10.8V ~ 36V
- Current - Supply:
- 3mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CERDIP
AD586LQ FAQ
1.How can I place an order for AD586LQ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD586LQ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD586LQ reliable?
The price and inventory of AD586LQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD586LQ is usually 5 days.
3.What payment methods are accepted for AD586LQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD586LQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD586LQ?
AD586LQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD586LQ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD586LQ?
For technical support, including AD586LQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD586LQ requirements.
6.How does Aetrix verify that AD586LQ is sourced from the original manufacturer or authorized distributors?
All AD586LQ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD586LQ meets industry standards.
7.What is the process for return or replacement of AD586LQ?
All AD586LQ units undergo pre-shipment inspection (PSI). If there is an issue with AD586LQ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD586LQ part is unused and in its original packaging.
Return procedure for AD586LQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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