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Analog Devices Inc. REF02AJ/883C
- Part No.:
- REF02AJ/883C
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
REF02AJ/883C.pdf
- Description:
- IC VREF SERIES 5V TO99-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,350
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Product details
Overview
REF02AJ/883C from Analog Devices is a military-grade, hermetically sealed 5.0 V precision voltage reference in TO-99 metal can package, featuring ±0.3% initial accuracy (A grade), 8.5 ppm/°C max temperature coefficient over −55°C to +125°C, 15 µVp-p (0.1–10 Hz) low-frequency noise, and integrated temperature-sensing output (580 mV @ 25°C, 1.96 mV/°C). It serves as a stable excitation source for high-resolution ADCs and DACs in aerospace data acquisition systems.
For engineers reviewing the REF02AJ/883C datasheet, REF02AJ/883C pinout, REF02AJ/883C application, or REF02AJ/883C equivalent, this page delivers verified specifications, TO-99 pin mapping, military-qualified thermal stability data, trim-adjustable output capability, and direct alternatives for MIL-STD-883 Class B applications requiring long-term drift <50 ppm after 1000 hours.
Technical Context
The REF02AJ/883C implements a laser-trimmed bandgap core with PTAT current generation and buffered reference output, enabling stable 5.0 V regulation across extreme supply (7.0–36 V) and temperature (−55°C to +125°C) ranges. Its TEMP pin provides unbuffered bandgap voltage for external temperature monitoring without additional circuitry.
It integrates a TRIM terminal for ±3.0% output adjustment via external potentiometer, supports 10 mA load sourcing, and maintains 2 V dropout at full load - all while operating at ≤1.4 mA quiescent current. The TO-99 package (J-suffix) features case-grounded Pin 2 and 170°C/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal, ±0.3% initial accuracy (A grade) - ensures ≤±15 mV absolute error at 25°C for calibration-critical systems. |
| Tempco | 8.5 ppm/°C max over −55°C to +125°C - enables <±0.5 mV total drift across full military temperature range. |
| Noise (0.1–10 Hz) | 15 µVp-p typical - minimizes quantization uncertainty in 16-bit+ SAR and sigma-delta converters. |
| Supply Range | 7.0 V to 36 V - accommodates wide-input DC-DC outputs and battery-backed avionics rails without external regulators. |
| Load Drive | 10 mA sourcing capability - directly drives multiple op-amp bias networks or ADC reference inputs without buffer amplifiers. |
| TEMP Pin Output | 580 mV @ 25°C, 1.96 mV/°C sensitivity - enables ±1°C temperature sensing resolution with 12-bit ADC. |
| Long-Term Stability | 50 ppm after 1000 hours - guarantees <±0.25 mV output shift during burn-in and early-life operation. |
Pinout & Package
REF02AJ/883C uses an 8-lead TO-99 metal can package (J-suffix) with case ground. Pins 1, 3, 7, and 8 are no-connect; Pin 2 is grounded to the case; all NC pins must remain unconnected per datasheet directive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7, 8 | No Connect (NC) | Factory test-only; must float or tie to ground - no signal routing permitted. |
| 2 | Ground (Case) | Hermetic metal case serves as primary ground return; critical for EMI immunity in radar subsystems. |
| 4 | GND | Dedicated signal ground pin; separates analog reference ground from power ground in mixed-signal PCB layouts. |
| 5 | TRIM | Adjusts output voltage ±3.0% via external 10 kΩ pot; enables system-level calibration of sensor chain gain errors. |
| 6 | VOUT | 5.0 V precision reference output; capable of sourcing 10 mA with <100 ppm/mA load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-STD-883 qualified | Screened to Class B requirements including temperature cycling, mechanical shock, and hermeticity testing - certified for flight-critical hardware. |
| Integrated temperature sensor | Direct bandgap-derived TEMP pin output (580 mV @ 25°C, 1.96 mV/°C) eliminates need for external thermistor or IC sensor in environmental monitoring circuits. |
| Trim-adjustable output | TRIM pin enables ±3.0% fine-tuning of VOUT using 10 kΩ potentiometer - compensates for PCB trace resistance, solder thermal shift, and system-level offset errors. |
| Low-noise architecture | 15 µVp-p (0.1–10 Hz) noise floor ensures <0.00023% RMS noise contribution to 5 V reference - preserves ENOB in 18-bit data converters. |
| Wide supply headroom | Operates down to 7.0 V input with only 2 V dropout - supports direct connection to unregulated 12 V or 28 V aircraft bus rails. |
Applications
| Aerospace Data Acquisition | Military Precision Instrumentation |
|---|---|
Use Scenario: High-speed telemetry systems capturing vibration, pressure, and temperature data from jet engine test cells. IC Role / Device Role / Timing Role: Primary 5.0 V reference for dual 16-bit simultaneous-sampling ADCs driving FPGA-based real-time FFT processing. Use Value: 8.5 ppm/°C tempco and 50 ppm long-term stability ensure <±0.4 LSB error over 10-year service life without recalibration. |
Use Scenario: Portable field-deployable spectrum analyzers used for electronic warfare signal intelligence. IC Role / Device Role / Timing Role: Reference source for 12-bit DAC-controlled local oscillator tuning and RF front-end gain calibration. Use Value: TO-99 hermetic package and MIL-883 screening guarantee operation under shock/vibe and humidity extremes encountered in tactical vehicles. |
| Avionics Sensor Signal Conditioning | Spacecraft Power Management Units |
Use Scenario: Analog front-end for strain-gauge and RTD sensors in flight control surface position feedback loops. IC Role / Device Role / Timing Role: Excitation source and ratiometric reference for instrumentation amplifiers and Wheatstone bridge interfaces. Use Value: TRIM pin allows factory calibration to null out bridge offset and amplifier input bias errors - achieving <0.01% total system accuracy. |
Use Scenario: Voltage reference for isolated DC-DC converter feedback loops and battery cell voltage monitors on LEO satellite platforms. IC Role / Device Role / Timing Role: Stable 5.0 V基准 for optocoupler-isolated error amplifiers regulating 3.3 V and 1.2 V point-of-load supplies. Use Value: 1.4 mA quiescent current and radiation-tolerant silicon design support ultra-low-power, long-duration orbital missions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02JCHZ | Same TO-99 package, ±0.1% initial accuracy, 3 ppm/°C tempco, but commercial-grade (non-883); requires external qualification for military use. | Lacks MIL-STD-883 screening, burn-in, and hermetic seal - unsuitable for flight hardware without additional vendor testing. | Select only if program allows commercial-qualified parts with extended reliability testing. |
| MAX6126AASA+ | SO-8 package, ±0.06% initial accuracy, 3 ppm/°C, 5.0 V output, but limited to −40°C to +125°C and no TEMP pin. | No temperature monitoring function; plastic package not approved for high-reliability aerospace deployments. | Use where highest accuracy is required and temperature sensing is handled separately. |
Compared with REF02AJ/883C, ADR02JCHZ offers superior accuracy and stability but lacks military qualification, while MAX6126AASA+ delivers higher precision in compact SO-8 form but omits the TEMP pin and hermetic packaging essential for harsh-environment deployment.
Availability
REF02AJ/883C is available at Aetrix Electronics and suitable for aerospace telemetry systems, military instrumentation, avionics sensor conditioning, and spacecraft power management requiring stable component supply under MIL-STD-883 compliance.
Supply support for REF02AJ/883C 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, aerospace, and defense markets since 1965.
The REF02 series belongs to Analog Devices' legacy precision voltage reference product line, specifically engineered for military, space, and high-reliability industrial applications demanding long-term stability, wide temperature operation, and hermetic packaging.
FAQ
What is the maximum operating temperature range for REF02AJ/883C?
The REF02AJ/883C is rated for operation from −55°C to +125°C per MIL-STD-883 Class B specifications. This extended range is validated through temperature cycling, steady-state bake, and parametric testing at both extremes - ensuring reliable performance in jet engine bays and space vacuum environments. The 8.5 ppm/°C temperature coefficient applies across this full range.
Does REF02AJ/883C include a temperature sensing function?
Yes, REF02AJ/883C provides a dedicated TEMP pin that outputs an unbuffered bandgap voltage of 580 mV at 25°C with a linear temperature coefficient of 1.96 mV/°C. This allows direct measurement of die temperature using a single ADC channel - eliminating the need for external sensors in thermal monitoring subsystems within the same REF02AJ/883C package.
Can the output voltage of REF02AJ/883C be adjusted, and how?
Yes, the TRIM pin (Pin 5) enables ±3.0% adjustment of the 5.0 V output using an external 10 kΩ potentiometer configured as described in Figure 35 of the datasheet. This allows system-level calibration to compensate for PCB layout effects, solder thermal shift, and downstream amplifier offsets - maintaining end-to-end accuracy without modifying the REF02AJ/883C's internal laser trimming.
What is the noise performance of REF02AJ/883C, and why does it matter?
REF02AJ/883C delivers 15 µVp-p low-frequency noise (0.1–10 Hz), measured on the TO-99 (J-suffix) variant. This low noise floor prevents degradation of effective number of bits (ENOB) in high-resolution data converters - for example, contributing less than 0.00023% of full-scale error in a 5 V-referenced 18-bit ADC, preserving measurement fidelity in precision test equipment.
Is REF02AJ/883C pin-compatible with newer Analog Devices references like ADR02?
Yes, REF02AJ/883C is pin-compatible with ADR02JCHZ in the TO-99 package, sharing identical pinout (GND, VIN, TEMP, GND, TRIM, VOUT, NC, NC) and electrical interface. However, ADR02JCHZ is commercial-grade and lacks MIL-STD-883 qualification - so while footprint and wiring match, substitution requires requalification for military/aerospace use cases where REF02AJ/883C is specified.
REF02AJ/883C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-99-8 Metal Can
- Series:
- REF02
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- ±0.3%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-99-8
REF02AJ/883C FAQ
1.How can I place an order for REF02AJ/883C through Aetrix?
Please submit a Request for Quotation (RFQ) for REF02AJ/883C 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 REF02AJ/883C reliable?
The price and inventory of REF02AJ/883C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF02AJ/883C is usually 5 days.
3.What payment methods are accepted for REF02AJ/883C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF02AJ/883C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF02AJ/883C?
REF02AJ/883C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF02AJ/883C 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 REF02AJ/883C?
For technical support, including REF02AJ/883C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF02AJ/883C requirements.
6.How does Aetrix verify that REF02AJ/883C is sourced from the original manufacturer or authorized distributors?
All REF02AJ/883C 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 REF02AJ/883C meets industry standards.
7.What is the process for return or replacement of REF02AJ/883C?
All REF02AJ/883C units undergo pre-shipment inspection (PSI). If there is an issue with REF02AJ/883C, 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 REF02AJ/883C part is unused and in its original packaging.
Return procedure for REF02AJ/883C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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