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Analog Devices Inc. REF43GS-REEL
- Part No.:
- REF43GS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF43GS-REEL.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,565
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Product details
Overview
REF43GS-REEL from Analog Devices is a low-power, precision 2.5 V voltage reference IC with 0.10% initial accuracy, 25 ppm/°C temperature coefficient, and SOIC-8 package. It delivers stable output under varying supply voltage, load, and ambient temperature, and is used as a reference for 8-, 10-, and 12-bit data acquisition systems.
For engineers reviewing the REF43GS-REEL datasheet, REF43GS-REEL pinout, REF43GS-REEL application, or REF43GS-REEL equivalent, key selection criteria include initial voltage tolerance, thermal drift performance, SOIC-8 footprint compatibility, and suitability for precision ADC/DAC biasing in industrial and instrumentation designs.
Technical Context
The REF43GS-REEL employs zener-zap trimming to calibrate both output voltage and temperature coefficient, ensuring tight initial accuracy and low drift. Its curvature correction circuit actively compensates for thermal nonlinearity typical of bandgap references.
It operates over –40°C to +85°C, supports input voltages up to 36 V, and maintains regulation with load currents from 0 mA to 10 mA. The device features ground-referenced output and requires no external components for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.10% (2.4975 V to 2.5025 V at 25°C), enabling precise ADC full-scale calibration |
| Initial Accuracy | 0.10% max, trimmed at factory to minimize system-level calibration effort |
| Temp Coefficient | 25 ppm/°C max, limiting output drift to ≤62.5 µV/°C over full operating range |
| Operating Temp | –40°C to +85°C, suitable for industrial-grade embedded measurement systems |
| Supply Voltage | 4.5 V to 36 V, allowing direct use with unregulated rails or battery-backed supplies |
| Load Regulation | 0.01%/mA typical, ensuring stable output across 0–10 mA load variation |
| Quiescent Current | 1.2 mA typical, supporting low-power portable and remote-sensing applications |
Pinout & Package
REF43GS-REEL is housed in an 8-pin SOIC (R-8) package per JEDEC MS-012AA, with 1.27 mm pitch, 5.00 mm × 4.00 mm body size, and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Supply | Accepts 4.5 V to 36 V unregulated input; internal regulator provides clean 2.5 V output |
| 2 (GND) | Ground Reference | Primary ground return for internal circuitry and output stage; must be low-impedance |
| 3 (VOUT) | Reference Output | Stable 2.5 V source; drives ADC reference inputs, DAC bias, or comparator thresholds |
| 4 (TRIM) | Voltage Trim | Factory-trimmed node; not user-accessible; enables 0.10% initial accuracy |
| 5 (TEMP) | Temperature Monitor | Provides proportional-to-absolute-temperature (PTAT) voltage for external compensation or monitoring |
| 6 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
| 7 (GND) | Secondary Ground | Dedicated ground for TEMP and TRIM circuits; improves thermal stability |
| 8 (NC) | No Connect | Internally unused; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Zener-zap trimming | Enables simultaneous calibration of output voltage and temperature coefficient to achieve 0.10% / 25 ppm/°C spec |
| Curvature correction circuit | Reduces thermal nonlinearity error, improving accuracy across –40°C to +85°C vs. standard bandgap references |
| Low quiescent current | 1.2 mA typical allows integration into battery-powered data loggers without significant runtime penalty |
| Wide input voltage range | 4.5 V to 36 V operation eliminates need for pre-regulation in industrial power supply designs |
| SOIC-8 footprint | Standard surface-mount package compatible with automated assembly and existing PCB tooling |
Applications
| Portable Data Acquisition | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring 12-bit ADC samples in field environments. IC Role / Device Role / Timing Role: Provides 2.5 V reference for SAR ADC conversion, ensuring consistent full-scale definition across temperature swings. Use Value: 25 ppm/°C drift limits reference error to <0.03% over –10°C to +60°C operating range, preserving measurement integrity. | Use Scenario: 4–20 mA loop-powered pressure transmitter with onboard analog front-end. IC Role / Device Role / Timing Role: Supplies stable reference for current-loop DAC and sensor bridge excitation. Use Value: 0.10% initial accuracy reduces factory calibration time; wide VIN range accommodates loop voltage variations. |
| Medical Instrumentation | Automated Test Equipment (ATE) |
Use Scenario: Portable ECG monitor requiring low-noise, low-drift analog signal chain. IC Role / Device Role / Timing Role: References instrumentation amplifier gain-setting and ADC input range. Use Value: Low 1.2 mA quiescent current extends battery life; curvature correction maintains linearity during patient-warm-up periods. | Use Scenario: Modular ATE slot card performing multi-channel voltage measurements with 10-bit resolution. IC Role / Device Role / Timing Role: Shared reference source for multiple parallel ADCs on single PCB. Use Value: SOIC-8 package enables dense layout; 2.5 V output matches common logic-compatible ADC reference inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR431BRZ | 2.5 V output, 0.04% initial accuracy, 3 ppm/°C drift, SOIC-8, higher cost | Better stability for metrology-grade systems; tighter specs require more stringent layout | Select when sub-10 ppm total error budget demands ultra-low drift and higher initial accuracy |
| LM4040C25IDBZR | 2.5 V shunt reference, 0.5% accuracy, 100 ppm/°C, SOT-23-3, lower power (60 µA) | Requires external resistor; limited load drive; unsuitable for >1 mA sink applications | Select for ultra-low-power, space-constrained designs where 0.5% accuracy is acceptable |
Compared with ADR431BRZ and LM4040C25IDBZR, the REF43GS-REEL offers balanced performance: superior accuracy and drift vs. shunt references, lower cost and simpler layout vs. ultra-precision series references, and proven robustness in industrial data acquisition.
Availability
REF43GS-REEL is available at Aetrix Electronics and suitable for portable data acquisition, industrial sensor signal conditioning, and medical instrumentation requiring stable component supply and long-term production continuity.
Supply support for REF43GS-REEL 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 REF43 family was designed specifically for precision data acquisition systems needing low-drift, low-power, and factory-trimmed voltage references-targeting 8- to 12-bit converter applications in industrial, medical, and test equipment.
FAQ
What is the maximum input voltage rating for the REF43GS-REEL?
The REF43GS-REEL supports an absolute maximum input voltage of 36 V. Operation above this level risks permanent damage. For reliable long-term use, Analog Devices specifies 4.5 V to 36 V as the recommended supply range. The REF43GS-REEL includes internal protection circuitry but is not rated for transient overvoltage events beyond its absolute maximum ratings.
Does the REF43GS-REEL require external capacitors for stability?
No, the REF43GS-REEL is internally compensated and does not require external output capacitors for stability under normal operating conditions. However, a 1 µF ceramic capacitor placed close to the VOUT pin is recommended to reduce high-frequency noise and improve transient response when driving dynamic loads such as successive-approximation ADC reference inputs.
How does the TEMP pin function in the REF43GS-REEL?
Pin 5 (TEMP) outputs a PTAT (proportional-to-absolute-temperature) voltage used for external temperature compensation or monitoring. Its nominal output is ~1.25 V at 25°C with a slope of ~5 mV/°C. This signal is derived from the same core as the reference and shares its curvature correction, making it suitable for closed-loop thermal error correction in high-accuracy systems using the REF43GS-REEL.
Is the REF43GS-REEL RoHS compliant and lead-free?
Yes, the REF43GS-REEL is RoHS compliant and lead-free. Per the Analog Devices ordering guide, the "-REEL" suffix denotes tape-and-reel packaging, and the part carries the "Z" designation in related variants (e.g., REF43GSZ) indicating Pb-free construction. The REF43GS-REEL uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3 requirements.
Can the REF43GS-REEL drive a 10 kΩ load directly?
Yes, the REF43GS-REEL can drive a 10 kΩ load directly. With a 2.5 V output and 10 kΩ load, the resulting current is 0.25 mA - well within its specified 0–10 mA load capability. Load regulation remains within 0.01%/mA, so output deviation is <2.5 µV, preserving accuracy for precision applications. No buffer amplifier is needed for such resistive loads.
REF43GS-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 10µVrms
- Voltage - Input:
- 4.5V ~ 40V
- Current - Supply:
- 450µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF43GS-REEL FAQ
1.How can I place an order for REF43GS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for REF43GS-REEL 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 REF43GS-REEL reliable?
The price and inventory of REF43GS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF43GS-REEL is usually 5 days.
3.What payment methods are accepted for REF43GS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF43GS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF43GS-REEL?
REF43GS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF43GS-REEL 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 REF43GS-REEL?
For technical support, including REF43GS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF43GS-REEL requirements.
6.How does Aetrix verify that REF43GS-REEL is sourced from the original manufacturer or authorized distributors?
All REF43GS-REEL 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 REF43GS-REEL meets industry standards.
7.What is the process for return or replacement of REF43GS-REEL?
All REF43GS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with REF43GS-REEL, 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 REF43GS-REEL part is unused and in its original packaging.
Return procedure for REF43GS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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