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Analog Devices Inc. REF02HSZ
- Part No.:
- REF02HSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF02HSZ.pdf
- Description:
- IC VREF SERIES 0.5% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,875
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Product details
Overview
REF02HSZ from Analog Devices is a precision 5.0 V voltage reference IC with ±0.3% initial accuracy, 8.5 ppm/°C max temperature coefficient, and 15 µVp-p (0.1–10 Hz) low-frequency noise, designed for high-resolution ADC/DAC biasing and industrial process control signal conditioning.
For engineers reviewing the REF02HSZ datasheet, REF02HSZ pinout, REF02HSZ application, or REF02HSZ equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases in precision instrumentation, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The REF02HSZ implements a laser-trimmed bandgap core with PTAT current generation and buffered output stage, delivering stable 5.0 V across −55°C to +125°C (A-grade). Its TEMP pin provides unbuffered 580 mV baseline with 1.96 mV/°C linear sensitivity for on-chip temperature monitoring.
It features internal trim capability via external 10 kΩ potentiometer (±3.0% adjustment range), supports up to 10 mA load current, operates from 7.0 V to 36 V input, and maintains 5 µs turn-on settling time to ±0.1% of final value.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal, ±15 mV (±0.3%) initial tolerance - ensures direct compatibility with 16-bit+ SAR ADC reference inputs without calibration. |
| Tempco | 8.5 ppm/°C max over −55°C to +125°C - enables <±0.5 LSB drift in 18-bit systems across full military temperature range. |
| Noise (0.1–10 Hz) | 15 µVp-p typical - contributes <0.002% RMS error in precision weigh-scale front-ends. |
| Supply Range | 7.0 V to 36 V - allows single-supply operation in 12 V/24 V industrial PLC I/O modules. |
| Load Drive | 10 mA sourcing capability - directly drives 5 V reference inputs of multiple op-amps or ADCs without buffer. |
| Quiescent Current | 1.4 mA max - enables low-power battery-backed data loggers with >1-year runtime on CR2032. |
| Dropout Voltage | 2 V - permits operation from 7 V input while maintaining regulation under worst-case load and temp. |
Pinout & Package
REF02HSZ is supplied in an 8-lead CERDIP (Z-suffix) hermetic ceramic package with 0.3-inch wide body and through-hole mounting. Pin 1 is marked by notch or dot; pins 1, 7, and 8 are no-connect (NC) and must remain unconnected per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC | No internal connection; floating or grounded per layout best practice - reserved for factory test only. |
| 2 | VIN | Unregulated input supply (7–36 V); requires ≥1 µF bulk + 0.1 µF ceramic capacitor at pin for transient immunity. |
| 3 | TEMP | Unbuffered bandgap voltage (580 mV @ 25°C, 1.96 mV/°C slope) - used for die temperature sensing without external components. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | Adjustment node for ±3% output tuning via external 10 kΩ potentiometer - enables system-level calibration of gain/offset errors. |
| 6 | VOUT | Stable 5.0 V reference output; requires 0.1 µF ceramic capacitor directly at pin to suppress 1/f noise and ensure stability. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed bandgap architecture | Delivers ±0.3% initial accuracy and 8.5 ppm/°C tempco without external calibration - reduces BOM count in medical sensor modules. |
| Integrated temperature sensor output | 580 mV baseline with 1.96 mV/°C linearity at TEMP pin - enables self-temperature-compensated reference design without added ICs. |
| Trim-adjustable output | ±3.0% fine-tuning range via external potentiometer - corrects PCB trace resistance, solder thermal shift, and system gain errors. |
| High PSRR & low noise | 100 ppm/V line regulation and 15 µVp-p (0.1–10 Hz) noise - maintains accuracy in noisy 24 V DC industrial power rails. |
| Wide supply and load range | Operates from 7 V to 36 V input and sources up to 10 mA - supports direct replacement of LM399/LT1021 in legacy test equipment. |
Applications
| Industrial Process Transmitter | Aerospace Sensor Signal Conditioning |
|---|---|
|
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART digital overlay. IC Role / Device Role / Timing Role: Primary 5 V reference for 24-bit ΣΔ ADC and DAC used in analog output stage calibration. Use Value: 8.5 ppm/°C tempco ensures <±0.05% FS error over −40°C to +85°C ambient, meeting ISA-S84 SIL-2 requirements. |
Use Scenario: Flight control surface position sensor with dual-redundant analog outputs. IC Role / Device Role / Timing Role: Reference source for ratiometric LVDT signal conditioning and fault-detection comparators. Use Value: Hermetic CERDIP package and −55°C to +125°C operation support DO-160E Category E3 environmental compliance. |
| Portable Precision DMM Front-End | Calibration Equipment Reference Module |
|
Use Scenario: Handheld 6½-digit digital multimeter with auto-ranging and offset compensation. IC Role / Device Role / Timing Role: Stable 5 V reference for autoranging amplifier gain stages and ADC reference switching matrix. Use Value: 15 µVp-p low-frequency noise prevents digit flicker in 100 mV range measurements at 100 nV resolution. |
Use Scenario: Benchtop calibrator generating precise 5 V, 10 V, and 2.5 V outputs for field instrument verification. IC Role / Device Role / Timing Role: Primary reference in cascaded voltage divider network with ADR02 secondary references. Use Value: Long-term stability of 50 ppm after 1000 hours enables annual recalibration intervals without drift correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02ARZ | Higher initial accuracy (±0.1%), lower tempco (3 ppm/°C), but 12 V max input voltage and SOIC-8 only. | Preferred for new designs requiring tighter specs; unsuitable for 24 V industrial supplies where REF02HSZ's 36 V rating is essential. | Select ADR02ARZ when upgrading from REF02HSZ in space-constrained, low-drift lab equipment - verify input voltage compatibility. |
| LM399H | Zero-drift buried-zener architecture (0.3 ppm/°C), oven-controlled, 10 V output only, higher power (600 mW), TO-99 package. | Used in metrology-grade standards and atomic clock references; not drop-in due to different voltage, footprint, and thermal management needs. | Choose LM399H only when sub-ppm stability is mandatory and board area/power budget allow oven control - REF02HSZ remains optimal for general-purpose 5 V precision. |
Compared with ADR02ARZ and LM399H, REF02HSZ uniquely balances 5 V output, 36 V input tolerance, hermetic CERDIP reliability, and cost-effective performance for industrial and aerospace transmitters - making it the preferred choice where ruggedness and voltage flexibility outweigh ultra-low drift requirements.
Availability
REF02HSZ is available at Aetrix Electronics and suitable for industrial process transmitters, aerospace sensor signal conditioning, portable precision DMM front-ends, calibration equipment reference modules, and high-resolution data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for REF02HSZ 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 R&D and manufacturing operations worldwide.
The REF01/REF02/REF03 series was engineered for high-stability, wide-temperature, and multi-package deployment in industrial, military, and aerospace instrumentation - prioritizing long-term reliability and ease of system-level trimming over minimal package size.
FAQ
What is the maximum operating temperature range for REF02HSZ?
The REF02HSZ is rated for operation from −55°C to +125°C (A-grade specification), as confirmed in the Absolute Maximum Ratings table and REF02 Specifications section of Rev. M datasheet. This range applies specifically to the Z-suffix CERDIP package and is validated across all electrical parameters including tempco and load regulation.
Does REF02HSZ require external capacitors for stable operation?
Yes - the REF02HSZ datasheet recommends a 0.1 µF ceramic capacitor directly at the VOUT pin for noise suppression and stability, and a 0.1 µF ceramic + 1–10 µF bulk capacitor at VIN for transient immunity. Omitting the output capacitor may cause oscillation or increased low-frequency noise in precision measurement circuits.
Can the TEMP pin of REF02HSZ be used for accurate temperature measurement?
Yes - the TEMP pin provides a linear 1.96 mV/°C output with 580 mV baseline at 25°C, directly from the bandgap core. It is specified for use in temperature monitoring applications per the Temperature Monitoring section, and its accuracy is maintained across the full operating temperature range of the REF02HSZ.
What is the purpose of the TRIM pin on REF02HSZ?
The TRIM pin enables ±3.0% output voltage adjustment using an external 10 kΩ potentiometer, as detailed in Figure 35 and Table 7 of the datasheet. This allows system-level correction of errors from PCB layout, solder reflow, or sensor gain mismatch - without requiring recalibration of downstream circuitry.
Is REF02HSZ pin-compatible with newer Analog Devices references like ADR02?
No - while the ADR02 series offers pin-for-pin compatibility with the REF02 family *in SOIC-8*, the REF02HSZ uses an 8-lead CERDIP (Z-suffix) package with different pinout and thermal characteristics. The ADR02ARZ is SOIC-only and lacks the hermetic sealing and extended temperature capability of REF02HSZ.
REF02HSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF02
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 15µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF02HSZ FAQ
1.How can I place an order for REF02HSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF02HSZ 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 REF02HSZ reliable?
The price and inventory of REF02HSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF02HSZ is usually 5 days.
3.What payment methods are accepted for REF02HSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF02HSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF02HSZ?
REF02HSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF02HSZ 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 REF02HSZ?
For technical support, including REF02HSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF02HSZ requirements.
6.How does Aetrix verify that REF02HSZ is sourced from the original manufacturer or authorized distributors?
All REF02HSZ 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 REF02HSZ meets industry standards.
7.What is the process for return or replacement of REF02HSZ?
All REF02HSZ units undergo pre-shipment inspection (PSI). If there is an issue with REF02HSZ, 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 REF02HSZ part is unused and in its original packaging.
Return procedure for REF02HSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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