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Analog Devices Inc. AD589SH
- Part No.:
- AD589SH
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-51-2 Metal Can
- Datasheet:
-
AD589SH.pdf
- Description:
- IC VREF SHUNT -2.83%/+1.22% TO51
- Quantity:
- Payment:
- Shipping:
Inventory:4,029
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Product details
Overview
AD589SH from Analog Devices is a 2-terminal shunt voltage reference delivering a precise 1.23 V output with ±5 mV voltage change over 50 µA to 5 mA input current, 100 ppm/°C max temperature coefficient across –55°C to +125°C, and 0.6 Ω dynamic output impedance - used as a stable reference for CMOS ADCs and portable instrumentation.
For engineers reviewing the AD589SH datasheet, AD589SH pinout, AD589SH application, or AD589SH equivalent, key selection criteria include its MIL-STD-883B-compliant metal-can (H-02) package, low-power operation down to 50 µA, floating or polarity-reversible configuration, and absence of required external compensation.
Technical Context
The AD589SH operates as a bandgap-based 2-terminal shunt reference, using precision bipolar processing and thin-film matching to achieve thermal tracking and stability without external components. Its active circuitry delivers 10× lower output impedance than conventional Zener diodes.
It supports bidirectional polarity use (positive/negative/floating), requires no frequency compensation, and maintains full accuracy under load transients due to sub-25 µs turn-on settling time and RMS noise of 5 µV (10 Hz–10 kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.235 V nominal at 25°C; tight 1.200–1.250 V range ensures consistent ADC/DAC biasing across production lots. |
| Temp Coefficient | 100 ppm/°C max (–55°C to +125°C); guarantees ≤±12.4 mV total drift over full military temperature range. |
| Dynamic Impedance | 0.6 Ω typical; enables stable regulation even with fast load-current steps up to 5 mA without external capacitor. |
| Operating Current | 50 µA to 5 mA; allows ultra-low-power battery operation while supporting higher-current precision systems. |
| RMS Noise | 5 µV (10 Hz–10 kHz); minimizes quantization error in 12-bit+ ADC applications like the AD7109. |
| Turn-On Settling | 25 µs to 0.1%; supports power-gated architectures where rapid wake-up and measurement are critical. |
Pinout & Package
Metal can (H-02 / TO-51) hermetic package with 2 axial leads: anode and cathode. No polarity marking; device functions identically regardless of orientation in circuit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal (shunt reference input) | Connected to unregulated supply; current flows into this terminal to establish regulated 1.23 V drop across device. |
| Cathode | Reference output node | Provides stable 1.23 V relative to anode; may serve as positive or negative reference depending on system grounding. |
Key Features
| Feature | Design Value |
|---|---|
| 2-Terminal Shunt Architecture | Eliminates need for dedicated reference input pin or external pass transistor; simplifies PCB layout and reduces BOM count. |
| No External Compensation Required | Enables direct connection to ADC reference inputs (e.g., AD7109, AD7107) without stability risk from trace capacitance or layout parasitics. |
| Floating Operation Capability | Permits use as isolated reference in high-side sensing, differential amplifiers, or dual-supply DAC interfaces without ground-loop constraints. |
| MIL-STD-883B Compliance | Validated screening including burn-in, temperature cycling, and hermeticity testing - suitable for aerospace and defense platforms requiring TQFP-level reliability. |
Applications
| Battery-Powered Portable Meters | High-Reliability Aerospace Data Acquisition |
|---|---|
Use Scenario: Handheld multimeters and panel meters operating from coin-cell or AA batteries with intermittent sampling. IC Role / Device Role / Timing Role: Primary voltage reference for integrating-type CMOS ADCs (e.g., AD7107), setting full-scale conversion range. Use Value: 50 µA minimum operating current extends battery life beyond 10 years in sleep-mode instruments; 25 µs turn-on enables instant-on functionality. |
Use Scenario: Flight control sensor conditioning modules exposed to –55°C to +125°C ambient extremes. IC Role / Device Role / Timing Role: Stable shunt reference for radiation-tolerant analog front-ends feeding FPGAs or rad-hard microcontrollers. Use Value: MIL-STD-883B qualification and 100 ppm/°C TC ensure <±15 mV reference error across full temperature range without calibration. |
| Industrial Process Monitoring Transmitters | Medical Diagnostic Instrumentation |
Use Scenario: 4–20 mA loop-powered field transmitters with HART modulation and local display. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADCs measuring thermocouple or RTD signals. Use Value: 0.6 Ω output impedance rejects supply ripple and load-induced errors during HART signal injection. |
Use Scenario: Portable ECG and pulse oximetry devices requiring FDA-cleared low-noise analog signal chains. IC Role / Device Role / Timing Role: Low-noise (5 µV RMS), low-drift reference for 12-bit SAR ADCs digitizing biopotential signals. Use Value: Sub-10 ppm effective TC and ultralow noise preserve diagnostic resolution in sub-microvolt physiological measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-terminal shunt reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM385BH-1.2 | 1.235 V nominal, 200 ppm/°C max TC (–40°C to +85°C), 1.5 Ω output impedance, SOIC-8 or TO-92 only - no military-grade variant. | Limited to commercial temp range; unsuitable for aerospace or extended industrial environments. | Select LM385BH-1.2 only for cost-sensitive commercial designs where MIL-STD-883B compliance and wide temperature operation are not required. |
| REF102KP | 1.2 V nominal, 50 ppm/°C max TC (–55°C to +125°C), 3-terminal series reference requiring external resistor; 10 µA quiescent current. | Requires 3-pin layout and bias network; incompatible with 2-terminal topology of AD589SH. | Choose REF102KP only when series architecture is mandated and lower TC outweighs added complexity and board space. |
Compared with LM385BH-1.2 and REF102KP, the AD589SH uniquely combines hermetic H-02 packaging, MIL-STD-883B compliance, true 2-terminal simplicity, and guaranteed performance across –55°C to +125°C - making it the sole option for ruggedized, space-constrained, and military-grade shunt reference designs.
Availability
AD589SH is available at Aetrix Electronics and suitable for battery-powered instrumentation, aerospace data acquisition, and industrial process transmitters requiring stable component supply with long-term obsolescence management.
Supply support for AD589SH 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.
The AD589SH belongs to Analog Devices' precision voltage reference product line, engineered specifically for military, aerospace, and industrial applications demanding wide-temperature operation, hermetic reliability, and minimal external component count.
FAQ
What is the operating temperature range of the AD589SH?
The AD589SH is rated for continuous operation from –55°C to +125°C. This full military temperature range is validated per MIL-STD-883B test conditions and applies to both electrical performance and hermetic seal integrity. All specifications in the AD589SH datasheet - including output voltage, temperature coefficient, and dynamic impedance - are guaranteed across this entire range.
Is the AD589SH pin-compatible with other AD589 variants like AD589JH or AD589MH?
Yes, the AD589SH shares identical H-02 metal-can packaging and 2-terminal pinout with all AD589H-series variants (e.g., AD589JH, AD589KH, AD589MH). The only differences are temperature coefficient grade (100 ppm/°C for AD589SH vs. 10/25/50 ppm/°C for others) and operating temperature range (–55°C to +125°C for AD589SH vs. 0°C to +70°C for J/K/L/M grades). Electrical substitution is permissible if TC and temperature range requirements align.
Does the AD589SH require an external capacitor for stability?
No, the AD589SH does not require any external capacitor for stability. Its internal design provides inherent phase margin across its full 50 µA to 5 mA operating current range. However, a 1000 pF capacitor is recommended for ultralow-noise applications (e.g., precision weighing scales), and stray capacitance above 20 pF should be avoided below 200 µA operation to prevent peaking - details confirmed in the AD589SH datasheet Section "APPLICATION INFORMATION".
Can the AD589SH be used as a negative reference?
Yes, the AD589SH functions identically as a negative reference when its anode is tied to system ground and its cathode supplies –1.23 V to the load. Its 2-terminal shunt architecture supports positive, negative, or floating configurations without modification. This capability is explicitly documented in the AD589SH datasheet Product Highlights and Figure 8 (reference for AD7533 DAC).
What is the absolute maximum reverse current rating for the AD589SH?
The AD589SH has an absolute maximum reverse current rating of 10 mA, matching its forward current limit. This symmetrical rating enables bidirectional current handling essential for floating and negative-reference configurations. Exceeding 10 mA in either direction risks permanent damage, as stated in the "ABSOLUTE MAXIMUM RATINGS" section of the AD589SH datasheet.
AD589SH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-51-2 Metal Can
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.235V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- -2.83%, +1.22%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 5µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 50 µA
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-51-2
AD589SH FAQ
1.How can I place an order for AD589SH through Aetrix?
Please submit a Request for Quotation (RFQ) for AD589SH 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 AD589SH reliable?
The price and inventory of AD589SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD589SH is usually 5 days.
3.What payment methods are accepted for AD589SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD589SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD589SH?
AD589SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD589SH 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 AD589SH?
For technical support, including AD589SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD589SH requirements.
6.How does Aetrix verify that AD589SH is sourced from the original manufacturer or authorized distributors?
All AD589SH 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 AD589SH meets industry standards.
7.What is the process for return or replacement of AD589SH?
All AD589SH units undergo pre-shipment inspection (PSI). If there is an issue with AD589SH, 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 AD589SH part is unused and in its original packaging.
Return procedure for AD589SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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