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Analog Devices Inc. REF01HJ8
- Part No.:
- REF01HJ8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
REF01HJ8.pdf
- Description:
- IC VREF SERIES 10V 8CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,789
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Product details
Overview
REF01HJ8 from Analog Devices (formerly Linear Technology) is a precision 10V bandgap voltage reference in an 8-lead CERDIP package, rated for 0°C to 70°C operation. It delivers ±0.3% initial accuracy, 8ppm/°C typical temperature coefficient, and 20μVP-P (0.1Hz–10Hz) output noise. Designed for high-stability analog signal chains, it supports bridge excitation, A/D converter reference, and precision regulator applications requiring low drift and moderate power consumption.
For engineers reviewing the REF01HJ8 datasheet, REF01HJ8 pinout, REF01HJ8 application, or REF01HJ8 equivalent, key selection criteria include its guaranteed 0°C–70°C temperature range, trim-adjustable output (±3%), 1.4mA max quiescent current, and compatibility with load currents up to 10mA-critical for embedded instrumentation and calibrated sensor interfaces.
Technical Context
The REF01HJ8 implements a thermally compensated bandgap core with internal trimming to achieve stable 10V output across supply variations and temperature. Its line regulation of 0.0001%/V and load regulation of 0.0005%/mA (0–10mA) minimize sensitivity to input ripple and dynamic load changes. The device features a dedicated TRIM pin enabling fine adjustment without external op-amps.
Unlike the REF-02 variant, REF01HJ8 omits the temperature-sensing output (Pin 3), simplifying use where only voltage reference stability is required. Its CERDIP (J8) package provides hermetic sealing and low thermal resistance (θJA = 100°C/W), supporting reliable operation in industrial environments with moderate thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.00 V ±0.3% (9.97–10.03 V at 25°C, no load); enables direct replacement of 10V references in legacy designs. |
| Temp Coefficient | 8 ppm/°C typical (0°C–70°C); ensures ≤0.008% output drift over full operating range-sufficient for 12-bit system accuracy. |
| Output Noise | 20 μVP-P (0.1Hz–10Hz); supports high-resolution ADCs (≥16-bit) without added filtering overhead. |
| Quiescent Current | 1.4 mA max; allows battery-powered portable instruments to operate >100 hours on a single AA cell. |
| Input Voltage Range | 12 V to 40 V; accommodates unregulated 15V or 24V rails with margin for ripple and dropout. |
| Load Regulation | 0.0005%/mA (0–10 mA); maintains <50 μV change per mA load shift-critical for ratiometric sensor bridges. |
| Line Regulation | 0.0001%/V; rejects supply variations better than 10 ppm/V-essential when sharing rail with switching regulators. |
Pinout & Package
REF01HJ8 uses an 8-lead CERDIP (J8) hermetic ceramic dual-inline package (0.300" width), with 0.100" lead pitch and glass-sealed leads. Pin 1 is marked by a beveled corner; the package meets MIL-STD-883 requirements for moisture resistance and long-term stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC (No Connect) | Internally connected; must remain unconnected to avoid parasitic coupling or latch-up. |
| 2 | INPUT | Positive supply input; requires ≥12V and ≤40V; decoupling capacitor recommended near pin. |
| 3 | TRIM | Adjustment node for ±3% output tuning via external potentiometer; high-impedance input (≥10MΩ). |
| 4 | GND | Analog ground reference; must connect directly to low-impedance ground plane to minimize noise coupling. |
| 5 | OUTPUT | Stable 10V reference output; capable of sourcing up to 10mA or sinking up to 0.3mA. |
| 6 | NC (No Connect) | Internally connected; floating connection prohibited-leave unattached. |
| 7 | NC (No Connect) | Internally connected; no external routing permitted. |
| 8 | NC (No Connect) | Internally connected; serves as case ground tie point in metal-can variants but unused in J8. |
Key Features
| Feature | Design Value |
|---|---|
| Trim-adjustable output | ±3% fine-tuning via external 10kΩ potentiometer enables calibration to system-level accuracy targets without redesign. |
| Low 0.1Hz–10Hz noise | 20μVP-P supports high-resolution data acquisition without post-processing filtering or oversampling penalties. |
| High line/load regulation | 0.0001%/V and 0.0005%/mA ensure reference stability even when powered from noisy or dynamically loaded supplies. |
| Hermetic CERDIP packaging | J8 package guarantees long-term parameter stability in humid or chemically aggressive environments (e.g., test equipment enclosures). |
| Guaranteed 0°C–70°C operation | Specified performance across commercial temperature range eliminates derating calculations for indoor industrial systems. |
Applications
| Bridge Excitation | A/D Converter Reference |
|---|---|
Use Scenario: Precision Wheatstone bridge used in strain gauge load cells for industrial weighing systems. IC Role / Device Role / Timing Role: Provides stable 10V excitation voltage to bridge arms and serves as reference for 16-bit sigma-delta ADC. Use Value: 8ppm/°C TC and 20μVP-P noise prevent thermal-induced zero drift and quantization uncertainty in sub-0.01% measurement accuracy. |
Use Scenario: High-accuracy data logger capturing thermocouple and RTD signals in environmental monitoring stations. IC Role / Device Role / Timing Role: Supplies precise 10V reference to SAR ADC (e.g., LTC2378-20) for absolute voltage scaling. Use Value: ±0.3% initial tolerance and 0.0005%/mA load regulation eliminate gain calibration steps during production test. |
| Precision Regulator Feedback | Constant Current Source |
Use Scenario: Low-noise ±15V linear power supply for op-amp-based analog front-ends in medical EEG amplifiers. IC Role / Device Role / Timing Role: Sets regulated output voltage via feedback divider in LT307-based tracking pre-regulator stage. Use Value: 1.4mA quiescent current minimizes standby power while maintaining 10V reference integrity under light loads. |
Use Scenario: LED driver for calibration-grade optical sensors requiring stable photometric output. IC Role / Device Role / Timing Role: Generates fixed 10V reference for op-amp-controlled MOSFET current sink (e.g., LT1001 + IRF520). Use Value: TRIM pin enables factory-set current accuracy within ±0.1%, eliminating per-unit resistor matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1019CS8#PBF | 0.05% initial accuracy, 5ppm/°C TC, pin-compatible 8-lead SOIC; higher cost, lower noise (10μVP-P). | Required for 18-bit+ systems or extended temperature ranges (–55°C to 125°C). | Select when tighter initial tolerance and wider temp range outweigh CERDIP reliability benefits. |
| REF01EN8#PBF | Same REF-01 family, identical specs, but in plastic DIP (N8) package; lower cost, non-hermetic, 0°C–70°C rated. | Suitable for cost-sensitive consumer test gear where humidity exposure is minimal. | Choose for budget-limited designs accepting reduced long-term stability vs. CERDIP's hermetic seal. |
Compared with LT1019CS8#PBF, REF01HJ8 trades 0.05% accuracy and extended temperature range for superior long-term stability in harsh environments; compared with REF01EN8#PBF, it offers enhanced moisture resistance and thermal cycling endurance at modest cost premium.
Availability
REF01HJ8 is available at Aetrix Electronics and suitable for precision instrumentation, industrial data acquisition, and calibrated sensor interface applications requiring stable component supply and long-term parametric consistency.
Supply support for REF01HJ8 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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including voltage references, op-amps, and data converters, with emphasis on high-reliability industrial and aerospace applications.
The REF-01 product line was designed specifically for cost-conscious, high-stability voltage reference needs in test equipment, process control, and sensor signal conditioning-prioritizing robustness, trim flexibility, and hermetic packaging over ultra-low-drift specs.
FAQ
What is the maximum input voltage for REF01HJ8?
The absolute maximum input voltage for REF01HJ8 is 40V. Operation above this level risks permanent damage. For reliable long-term performance, the recommended input range is 12V to 40V, with ≥2V headroom above the 10V output to maintain regulation. Input voltage below 12V will cause dropout and loss of specified accuracy.
Can REF01HJ8 be used as a 5V reference?
No, REF01HJ8 is a fixed 10V reference and cannot be configured for 5V output. The REF-02 family (e.g., REF02HJ8) provides 5V output with identical pinout and packaging. Attempting to scale REF01HJ8 down with resistive dividers degrades accuracy, noise performance, and temperature stability-use REF02HJ8 instead for 5V applications.
Does REF01HJ8 require an external capacitor on the OUTPUT pin?
REF01HJ8 does not require an output capacitor for stability, but a 1μF ceramic capacitor placed close to the OUTPUT and GND pins reduces high-frequency noise and improves transient load response. Avoid tantalum or electrolytic capacitors due to ESR-related instability risks; X7R ceramics are preferred for low-inductance mounting.
Is the TRIM pin on REF01HJ8 bidirectional for both increase and decrease of output voltage?
Yes, the TRIM pin on REF01HJ8 supports bidirectional adjustment: connecting a potentiometer between OUTPUT and GND with wiper to TRIM allows ±3% output tuning-both upward (to 10.3V) and downward (to 9.7V). The internal circuitry is symmetric; polarity reversal has no effect, and no external diodes or op-amps are needed.
What is the purpose of the NC pins on REF01HJ8?
The four NC pins (1, 6, 7, 8) on REF01HJ8 are internally connected to substrate or shield nodes and must remain unconnected externally. Routing traces or soldering components to these pins introduces parasitic capacitance, leakage paths, or thermal gradients that degrade output stability, noise, and long-term drift-always leave them floating per datasheet guidance.
REF01HJ8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Series:
- REF01
- Packaging:
- Tube
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- ±0.5%
- 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:
- 8-CERDIP
REF01HJ8 FAQ
1.How can I place an order for REF01HJ8 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01HJ8 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 REF01HJ8 reliable?
The price and inventory of REF01HJ8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01HJ8 is usually 5 days.
3.What payment methods are accepted for REF01HJ8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01HJ8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01HJ8?
REF01HJ8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01HJ8 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 REF01HJ8?
For technical support, including REF01HJ8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01HJ8 requirements.
6.How does Aetrix verify that REF01HJ8 is sourced from the original manufacturer or authorized distributors?
All REF01HJ8 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 REF01HJ8 meets industry standards.
7.What is the process for return or replacement of REF01HJ8?
All REF01HJ8 units undergo pre-shipment inspection (PSI). If there is an issue with REF01HJ8, 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 REF01HJ8 part is unused and in its original packaging.
Return procedure for REF01HJ8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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