My Inquiry
My Account
Analog Devices Inc. REF01EJ8
- Part No.:
- REF01EJ8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
REF01EJ8.pdf
- Description:
- IC VREF SERIES 10V 8CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,731
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
REF01EJ8 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, 5ppm/°C typical temperature coefficient, and 20µVP-P (0.1Hz–10Hz) output noise - enabling high-resolution data conversion and stable bridge excitation in industrial instrumentation.
For engineers reviewing the REF01EJ8 datasheet, REF01EJ8 pinout, REF01EJ8 application, or REF01EJ8 equivalent, this device is selected for low-drift analog signal chains requiring stable 10V reference voltage with minimal thermal drift, moderate power consumption (1.4mA max), and trim capability via external resistor network.
Technical Context
The REF01EJ8 implements a compensated bandgap core with internal trimming and external adjustment capability via the TRIM pin. Its output remains stable across input voltages from 12V to 40V and load currents up to ±10mA, with line regulation of 0.0001%/V and load regulation of 0.0005%/mA (REF-01A/E).
Unlike the REF-02 variant, REF01EJ8 lacks a temperature output pin - Pin 3 (TEMP) is not connected and must remain unconnected. Its thermal performance is characterized over 0°C to 70°C with guaranteed 8.5ppm/°C max TC in the full temperature range box specification.
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 use in 12-bit+ ADC/DAC reference paths without recalibration. |
| Temp Coefficient | 5 ppm/°C typ, 8.5 ppm/°C max (0°C to 70°C) - ensures ≤0.85 mV drift over full operating range, critical for precision sensor front-ends. |
| Output Noise | 20 µVP-P (0.1Hz–10Hz) - supports low-noise applications like strain gauge amplifiers where sub-µV stability matters. |
| Quiescent Current | 0.65–1.4 mA - allows battery-powered or low-power systems to maintain high-accuracy reference without excessive supply burden. |
| Line Regulation | 0.0001%/V - rejects input supply ripple effectively; <1 µV/V change supports operation from noisy or unregulated rails. |
| Load Regulation | 0.0005%/mA (0–10 mA) - maintains output stability under varying DAC or op-amp bias loads without external buffering. |
| Input Voltage Range | 12 V to 40 V - accommodates standard industrial 15V/24V supplies while tolerating transient overvoltage conditions. |
Pinout & Package
REF01EJ8 is housed in an 8-lead hermetic CERDIP (J8) package (0.300" wide, narrow body), with metal lid and glass-sealed leads. The package provides superior moisture resistance and long-term stability vs. plastic DIP, suitable for extended-life industrial deployments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must remain floating - no external tie required or permitted. |
| 2 (INPUT) | Reference Input | Accepts 12–40 V DC supply; internal regulator draws 0.65–1.4 mA quiescent current. |
| 3 (TEMP) | Temperature Output | Not connected on REF-01 variants; must be left unconnected - no thermal sensing function available. |
| 4 (GND) | Analog Ground | Primary return path for reference output and internal circuitry; requires low-impedance connection to system AGND. |
| 5 (NC) | No Connect | Internally unconnected; must remain floating - no external tie required or permitted. |
| 6 (NC) | No Connect | Internally unconnected; must remain floating - no external tie required or permitted. |
| 7 (OUTPUT) | 10V Reference Output | Stable 10.00 V ±0.3% source; capable of sourcing/sinking ±10 mA with <0.0005%/mA load regulation. |
| 8 (TRIM) | Output Adjustment | Connects to external 10kΩ potentiometer for ±3% fine-tuning of output voltage - used for system-level calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Trimmed Output Accuracy | ±0.3% initial tolerance - reduces need for post-assembly calibration in production test flows. |
| Low Temperature Drift | 5 ppm/°C typical TC - minimizes gain error drift in precision amplifiers and transducer signal conditioning circuits. |
| Low 0.1Hz–10Hz Noise | 20 µVP-P - preserves dynamic range in high-resolution weigh scales and digital multimeters. |
| High Line Rejection | 0.0001%/V line regulation - maintains reference integrity when powered from switching supplies or shared rail systems. |
| External Trim Capability | ±3% adjustment range via TRIM pin - enables end-of-line calibration to compensate for PCB trace resistance and layout parasitics. |
Applications
| High-Resolution Data Acquisition | Precision Bridge Excitation |
|---|---|
|
Use Scenario: 16-bit SAR ADC systems in portable test equipment requiring stable, low-noise reference voltage. IC Role / Device Role / Timing Role: Primary 10V reference source for ADC voltage reference input (VREF+), directly setting full-scale range. Use Value: 20 µVP-P noise and 5 ppm/°C drift ensure <0.01% total unadjusted error over temperature, preserving ENOB. |
Use Scenario: Wheatstone bridge sensors (e.g., load cells, pressure transducers) in factory automation systems. IC Role / Device Role / Timing Role: Precision excitation source for ratiometric bridge measurement, referenced to same 10V source as ADC. Use Value: ±0.3% initial accuracy and 0.0005%/mA load regulation eliminate bridge gain error due to reference variation. |
| Industrial DAC Calibration | Stable Regulator Reference |
|
Use Scenario: 12-bit current-output DACs in programmable power supplies requiring accurate setpoint generation. IC Role / Device Role / Timing Role: Reference for DAC's internal V/I converter stage, defining output current scaling factor. Use Value: External TRIM pin allows field calibration to match DAC transfer function, achieving <0.1% absolute accuracy. |
Use Scenario: Feedback reference for high-stability linear regulators (e.g., LT307-based designs) in medical instrumentation. IC Role / Device Role / Timing Role: Precision voltage setpoint for regulator error amplifier, replacing Zener diodes or resistor dividers. Use Value: 8.5 ppm/°C max TC and 1.4 mA supply current enable tighter output regulation than discrete solutions over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1019CN8#PBF | 0.05% initial accuracy, 5 ppm/°C TC, pin-compatible 8-lead PDIP; higher cost, lower drift. | Used where tighter initial tolerance and improved long-term stability are required (e.g., metrology-grade calibrators). | Select LT1019CN8 when ±0.05% absolute accuracy and <3 ppm/°C drift are mandatory - REF01EJ8 offers cost advantage for 0.3% grade. |
| REF02EJ8#PBF | 5V output (not 10V), identical J8 package, same temp range and pinout; TEMP pin functional on REF-02. | Preferred for 5V reference needs (e.g., 5V ADCs, microcontroller VREF), or when temperature monitoring is required. | Choose REF02EJ8 only if system requires 5V reference or temperature-sensing capability - REF01EJ8 is not interchangeable due to output voltage mismatch. |
Compared with LT1019CN8#PBF and REF02EJ8#PBF, REF01EJ8 provides optimal balance of 10V output, ±0.3% accuracy, and CERDIP reliability at lower cost - making it ideal for industrial DAQ and bridge excitation where 5 ppm/°C drift and 20 µVP-P noise meet spec.
Availability
REF01EJ8 is available at Aetrix Electronics and suitable for high-reliability industrial instrumentation, precision sensor signal conditioning, and automated test equipment requiring stable component supply and long-term calibration stability.
Supply support for REF01EJ8 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 power management ICs, with emphasis on high-performance industrial and aerospace applications.
The REF-01 family was designed specifically for precision analog systems needing stable, low-drift, low-noise 10V references - targeting data acquisition, sensor excitation, and calibration-critical instrumentation.
FAQ
What is the operating temperature range for REF01EJ8?
The REF01EJ8 is specified for operation from 0°C to 70°C. This range is guaranteed per the E-grade designation in the part number suffix and aligns with the "REF-01E" variant in the REF-01/REF-02 datasheet. Operation outside this range may result in degraded performance or non-compliance with published specifications such as 8.5 ppm/°C max temperature coefficient.
Does REF01EJ8 provide a temperature output voltage like REF-02?
No, REF01EJ8 does not provide a temperature output voltage. Pin 3 (TEMP) is internally unconnected on all REF-01 variants, including REF01EJ8, and must remain unconnected in the circuit. Only REF-02 devices feature a functional temperature output pin delivering 620 mV at 25°C with 2.1 mV/°C slope.
Can REF01EJ8 be used with input voltages below 12V?
No - the absolute minimum input voltage for REF01EJ8 is 12V, as specified in the Absolute Maximum Ratings table. Below 12V, the internal bandgap regulator cannot maintain regulation, causing output voltage collapse or instability. For lower-voltage applications, consider alternatives such as the LT1019 or REF02 series.
What is the purpose of the TRIM pin on REF01EJ8?
The TRIM pin (Pin 8) on REF01EJ8 enables ±3% adjustment of the 10V output using an external 10kΩ potentiometer. This allows system-level calibration to compensate for board-level errors, such as trace resistance or ADC offset, ensuring final accuracy meets design targets without requiring laser trimming or custom components.
Is REF01EJ8 pin-compatible with LT1019?
Yes - REF01EJ8 and LT1019 share identical pinouts in the 8-lead PDIP (N8) and CERDIP (J8) packages. However, REF01EJ8 uses a J8 (CERDIP) package while LT1019CN8 uses N8 (PDIP); mechanical compatibility requires matching package type. Electrical behavior differs in accuracy (±0.3% vs. ±0.05%) and noise performance.
REF01EJ8 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:
- ±0.3%
- 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:
- 8-CERDIP
REF01EJ8 FAQ
1.How can I place an order for REF01EJ8 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01EJ8 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 REF01EJ8 reliable?
The price and inventory of REF01EJ8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01EJ8 is usually 5 days.
3.What payment methods are accepted for REF01EJ8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01EJ8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01EJ8?
REF01EJ8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01EJ8 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 REF01EJ8?
For technical support, including REF01EJ8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01EJ8 requirements.
6.How does Aetrix verify that REF01EJ8 is sourced from the original manufacturer or authorized distributors?
All REF01EJ8 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 REF01EJ8 meets industry standards.
7.What is the process for return or replacement of REF01EJ8?
All REF01EJ8 units undergo pre-shipment inspection (PSI). If there is an issue with REF01EJ8, 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 REF01EJ8 part is unused and in its original packaging.
Return procedure for REF01EJ8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
REF01EJ8 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
