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Analog Devices Inc. REF03GSZ-REEL7
- Part No.:
- REF03GSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF03GSZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.6% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
REF03GSZ-REEL7 from Analog Devices is a precision 2.5 V voltage reference IC with ±0.6% initial accuracy, 50 ppm/°C temperature coefficient, 6 µVp-p (0.1–10 Hz) low-frequency noise, 1.4 mA max quiescent current, and 10 mA output sourcing capability - used in high-resolution ADC/DAC biasing, industrial sensor signal conditioning, and calibration-critical instrumentation circuits.
For engineers reviewing the REF03GSZ-REEL7 datasheet, REF03GSZ-REEL7 pinout, REF03GSZ-REEL7 application, or REF03GSZ-REEL7 equivalent, this page delivers verified electrical specs, SOIC-8 package mapping, TRIM/TEMP terminal functionality, and validated alternatives for precision analog system design.
Technical Context
The REF03GSZ-REEL7 implements a laser-trimmed bandgap core with PTAT and CTAT voltage summation to generate a stable 2.5 V output. Its TEMP pin provides an unbuffered 580 mV baseline with 1.96 mV/°C linear slope for on-chip temperature monitoring.
It features internal op-amp feedback (R5/R6 network), trim-adjustable output via external 10 kΩ potentiometer, and operates from 4.5 V to 36 V input while maintaining regulation down to 2 V dropout. No external capacitors are required for stability, though 0.1 µF ceramic at VOUT is recommended for noise suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal, 2.495–2.515 V over −40°C to +85°C - enables direct interface with 2.5 V ADC references and rail-to-rail op-amps. |
| Initial Accuracy | ±0.6% (±15 mV) - supports 12-bit absolute accuracy without system-level trimming. |
| Temp Coefficient | 50 ppm/°C max - ensures ≤125 ppm total drift across −40°C to +85°C (±0.3125 mV). |
| Voltage Noise | 6 µVp-p (0.1–10 Hz) - minimizes quantization uncertainty in 16-bit+ data acquisition systems. |
| Quiescent Current | 1.4 mA max - allows battery-powered portable instruments to achieve >1-year runtime on AA cells. |
| Load Drive | 10 mA sourcing - directly drives ADC reference inputs, op-amp buffers, or multiple parallel DACs. |
| Input Range | 4.5 V to 36 V - accommodates wide-input industrial supplies and unregulated 5 V/12 V rails. |
Pinout & Package
REF03GSZ-REEL7 is housed in an 8-lead SOIC package (S-suffix), with gull-wing leads, 1.27 mm pitch, and standard JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC | No internal connection; must remain floating or tied to GND per layout best practice - not reserved for factory test only in this grade. |
| 2 | VIN | Unregulated DC input supply (4.5–36 V); requires local 0.1 µF decoupling if source impedance >1 Ω. |
| 3 | TEMP | Bandgap-derived analog temperature monitor (580 mV @ 25°C, 1.96 mV/°C); high-impedance node - buffer before ADC sampling. |
| 4 | GND | Analog ground reference; must connect to clean, low-noise system ground plane with short trace. |
| 5 | TRIM | Output voltage adjustment node; accepts external 10 kΩ potentiometer for ±6% to ±11% fine-tuning of VOUT. |
| 6 | VOUT | Stable 2.5 V reference output; capable of sourcing 10 mA with <100 ppm/mA load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Low 6 µVp-p noise (0.1–10 Hz) | Enables sub-LSB noise floor in 16-bit SAR ADCs without external filtering. |
| Integrated TEMP pin with 1.96 mV/°C slope | Eliminates need for discrete temperature sensor in space-constrained calibrators and field instruments. |
| ±6% to ±11% output adjustability via TRIM | Compensates for PCB trace resistance, solder thermal shift, and system gain errors without redesign. |
| 10 mA output drive with 100 ppm/mA load regulation | Supports daisy-chained reference distribution to multiple converters without external buffer. |
| 4.5 V minimum operating voltage | Operates from single Li-ion cell (3.0–4.2 V) with boost pre-regulator or from 5 V USB supplies. |
Applications
| Industrial Process Transmitter | Precision Portable DMM |
|---|---|
|
Use Scenario: 4–20 mA loop-powered transmitter with HART modulation, requiring stable excitation for RTD/thermocouple front-end. IC Role / Device Role / Timing Role: Primary 2.5 V reference for sigma-delta ADC and DAC used in analog output stage calibration. Use Value: 50 ppm/°C TC and ±0.6% accuracy ensure <0.1% full-scale error over −40°C to +85°C ambient without recalibration. |
Use Scenario: Handheld digital multimeter with 6½-digit resolution and auto-ranging analog front-end. IC Role / Device Role / Timing Role: Reference source for dual-slope integrator and successive-approximation ADC during DCV/Ohms measurements. Use Value: 6 µVp-p low-frequency noise prevents integration drift and maintains 100 nV resolution in 10 V range. |
| Laboratory Calibration Source | Medical Patient Monitor Sensor Interface |
|
Use Scenario: Benchtop voltage calibrator generating programmable 2.5 V ±0.01% outputs for instrument verification. IC Role / Device Role / Timing Role: Master reference for DAC-controlled precision voltage generation with TRIM-based fine adjustment. Use Value: ±11% TRIM range enables end-of-line correction to meet 0.01% absolute accuracy spec after aging and thermal cycling. |
Use Scenario: ECG/SpO₂ module with isolated analog front-end and low-power microcontroller. IC Role / Device Role / Timing Role: Low-noise, low-quiescent reference for instrumentation amplifier biasing and ADC reference in battery-operated device. Use Value: 1.4 mA IQ and 2.5 V output reduce power consumption vs. higher-voltage references while maintaining SNR >100 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR03ARZ-REEL7 | 2.5 V, ±0.1% initial accuracy, 3 ppm/°C TC, 5.5 µVp-p noise, 1.2 mA IQ, same SOIC-8 package. | Higher accuracy and lower drift suit metrology-grade equipment; not drop-in due to different TRIM/TEMP behavior. | Select ADR03ARZ-REEL7 when long-term stability (<10 ppm/1000 hrs) and sub-ppm TC are mandatory. |
| MAX6126AASA25+ | 2.5 V, ±0.06% initial accuracy, 5 ppm/°C TC, 12 µVp-p noise, 1.0 mA IQ, SOIC-8, no TEMP pin. | Lacks temperature sensing; optimized for ultra-low drift, not multi-function use cases. | Choose MAX6126AASA25+ for high-volume portable instruments where TEMP functionality is unnecessary. |
Compared with REF03GSZ-REEL7, ADR03ARZ-REEL7 offers superior accuracy and TC but requires circuit validation for TRIM/TEMP reuse, while MAX6126AASA25+ trades away temperature monitoring for tighter initial tolerance and lower cost in volume production.
Availability
REF03GSZ-REEL7 is available at Aetrix Electronics and suitable for industrial process transmitters, portable DMMs, laboratory calibration sources, and medical sensor interfaces requiring stable component supply with guaranteed long-term continuity.
Supply support for REF03GSZ-REEL7 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.
The REF03GSZ-REEL7 belongs to the legacy REF0x series designed for general-purpose precision voltage referencing in industrial, instrumentation, and aerospace systems where proven reliability and multi-function terminals (TRIM/TEMP) are prioritized over ultra-low drift.
FAQ
What is the operating temperature range for REF03GSZ-REEL7?
The REF03GSZ-REEL7 is rated for operation from −40°C to +85°C. This range is specified in the REF03 section of the Rev. M datasheet and applies to all SOIC-packaged (S-suffix) and CERDIP-packaged (Z-suffix) variants including REF03GSZ-REEL7. Performance parameters such as temperature coefficient and initial accuracy are guaranteed across this full range.
Does REF03GSZ-REEL7 require external capacitors for stability?
No, REF03GSZ-REEL7 is internally compensated and operates stably without external capacitors. However, a 0.1 µF ceramic capacitor placed directly at the VOUT pin is recommended to suppress low-frequency noise and improve transient response. Input capacitance is optional but advised for noisy supply environments.
Can the TEMP pin of REF03GSZ-REEL7 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, enabling ±1°C accuracy when buffered and digitized with a 12-bit ADC. The REF03GSZ-REEL7 datasheet confirms this function is fully characterized and usable across −40°C to +85°C, though self-heating effects must be minimized in high-power layouts.
What is the maximum load current REF03GSZ-REEL7 can source?
REF03GSZ-REEL7 can continuously source up to 10 mA while maintaining output regulation within specifications. Load regulation is specified at 60–100 ppm/mA, meaning output deviation remains under ±1 mV across full 10 mA range at 25°C. Sinking capability is limited to −0.3 mA.
Is REF03GSZ-REEL7 pin-compatible with newer Analog Devices references like ADR03?
No - although ADR03ARZ-REEL7 shares the same SOIC-8 package and 2.5 V output, its pinout differs: ADR03 uses Pin 3 for NC and Pin 5 for GND, whereas REF03GSZ-REEL7 assigns Pin 3 to TEMP and Pin 4 to GND. Direct replacement requires PCB revision; functional substitution is possible only with schematic and layout updates.
REF03GSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF03
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.6%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.5V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF03GSZ-REEL7 FAQ
1.How can I place an order for REF03GSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for REF03GSZ-REEL7 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 REF03GSZ-REEL7 reliable?
The price and inventory of REF03GSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF03GSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for REF03GSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF03GSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF03GSZ-REEL7?
REF03GSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF03GSZ-REEL7 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 REF03GSZ-REEL7?
For technical support, including REF03GSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF03GSZ-REEL7 requirements.
6.How does Aetrix verify that REF03GSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All REF03GSZ-REEL7 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 REF03GSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of REF03GSZ-REEL7?
All REF03GSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with REF03GSZ-REEL7, 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 REF03GSZ-REEL7 part is unused and in its original packaging.
Return procedure for REF03GSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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