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Analog Devices Inc. REF02CSZ-REEL
- Part No.:
- REF02CSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF02CSZ-REEL.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,916
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Product details
Overview
REF02CSZ-REEL from Analog Devices is a precision 5.0 V voltage reference IC with ±0.3% initial accuracy, 8.5 ppm/°C max temperature coefficient, and 15 µVp-p (0.1–10 Hz) low-frequency noise, designed for high-resolution ADC/DAC biasing, industrial sensor signal conditioning, and calibration-critical instrumentation circuits.
For engineers reviewing the REF02CSZ-REEL datasheet, REF02CSZ-REEL pinout, REF02CSZ-REEL application, or REF02CSZ-REEL equivalent, this page delivers verified electrical specs, SOIC-8 package layout, trim and temperature-sensing functionality, and validated alternatives for precision analog system design.
Technical Context
The REF02CSZ-REEL implements a laser-trimmed bandgap core with internal op-amp feedback to stabilize its 5.0 V output across supply (7.0–36 V), temperature (−40°C to +85°C), and load (0–10 mA) variations. Its TEMP pin provides an unbuffered, linear 580 mV baseline with 1.96 mV/°C sensitivity for on-chip die temperature monitoring.
It features a dedicated TRIM terminal enabling ±3.0% output adjustment via external potentiometer, while maintaining specified TCVO and long-term stability (50 ppm after 1000 hours). The device operates without external capacitors but benefits from 0.1 µF ceramic output capacitance for noise suppression and transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal, ±0.3% initial accuracy (A/E grade) - ensures direct compatibility with 5 V logic and SAR ADC reference inputs. |
| Temp Coefficient | 8.5 ppm/°C max (−55°C to +125°C) - enables sub-0.01% full-scale drift over industrial temperature range. |
| Voltage Noise | 15 µVp-p (0.1–10 Hz) - supports 18+ bit converter resolution without added noise floor degradation. |
| Supply Range | 7.0 V to 36 V - allows operation from unregulated rails or wide-input industrial supplies without external regulators. |
| Load Drive | 10 mA sourcing capability - directly powers multiple op-amps, ADC references, or sensor excitation circuits. |
| Quiescent Current | 1.4 mA max - balances low power consumption with fast turn-on settling (5 µs to ±0.1%). |
| Dropout Voltage | 2 V - permits stable 5 V output even with input as low as 7 V, easing supply margining. |
Pinout & Package
REF02CSZ-REEL is housed in an 8-lead SOIC (S-suffix) package with exposed pad thermal enhancement. Pin 1 is NC (no internal connection); pins 7 and 8 are also NC. GND (Pin 4) serves as the primary reference ground return.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC | No internal connection; must remain floating or tied to GND per layout best practice. |
| 2 | VIN | Unregulated input supply rail (7–36 V); requires local 0.1 µF decoupling capacitor. |
| 3 | TEMP | Bandgap-derived temperature sensor output (580 mV @ 25°C, 1.96 mV/°C slope) - used for die temperature estimation. |
| 4 | GND | Analog ground reference; must be connected to low-impedance system ground plane. |
| 5 | TRIM | Output voltage fine-adjustment node; accepts external 10 kΩ potentiometer for ±3% trimming. |
| 6 | VOUT | Stable 5.0 V reference output; requires 0.1 µF ceramic capacitor to ground for optimal noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| High Output Accuracy | ±0.3% initial error (A/E grade) - eliminates need for system-level calibration in mid-precision applications. |
| Low Temperature Drift | 8.5 ppm/°C max over −55°C to +125°C - maintains <±0.001 V drift across extended industrial range. |
| Integrated Temp Sensing | Direct TEMP pin output (580 mV, 1.96 mV/°C) - enables real-time die temperature tracking without external sensors. |
| Adjustable Output | ±3.0% trim range via external potentiometer - compensates for PCB trace resistance, solder shift, or system gain errors. |
| Wide Supply Tolerance | Operates from 7.0 V to 36 V - accommodates battery, rectified AC, or unregulated DC supplies without pre-regulation. |
Applications
| Industrial Process Control | Precision Data Acquisition |
|---|---|
Use Scenario: High-accuracy 4–20 mA transmitter with HART modulation requiring stable 5 V reference for DAC and sensor excitation. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit DAC and bridge sensor amplifier biasing. Use Value: 8.5 ppm/°C TCVO ensures <±0.0008 V drift over −40°C to +85°C ambient, preserving loop accuracy. |
Use Scenario: Portable multichannel data logger sampling thermocouples and RTDs with simultaneous 18-bit SAR ADCs. IC Role / Device Role / Timing Role: Master reference for ADC VREF and analog front-end gain-setting resistors. Use Value: 15 µVp-p low-frequency noise prevents degradation of effective resolution below 18 bits. |
| Calibration Equipment | Military/Aerospace Instrumentation |
Use Scenario: Benchtop calibrator generating precise 5 V outputs for field instrument verification and NIST-traceable standards. IC Role / Device Role / Timing Role: Stable reference source for programmable voltage outputs and self-test circuitry. Use Value: ±0.3% initial accuracy and 50 ppm long-term stability (1000 hrs) support annual recalibration intervals. |
Use Scenario: Avionics black box recording system operating in −55°C to +125°C environments with EMI-hardened analog signal chains. IC Role / Device Role / Timing Role: Ruggedized reference for flight-critical sensor interfaces and fault-monitoring comparators. Use Value: SOIC-8 package with qualified C-grade screening and 8.5 ppm/°C TCVO meet MIL-PRF-38534 Class H requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02ARZ-REEL | Higher accuracy (±0.1%), lower TCVO (3 ppm/°C), same SOIC-8 pinout and 5 V output. | Better suited for metrology-grade systems where long-term drift and temp stability dominate cost trade-offs. | Drop-in replacement with improved specs; verify layout thermal relief for ADR02's higher PSRR. |
| MAX6126AASA50+ | 5.0 V output, ±0.06% initial accuracy, 3 ppm/°C TCVO, but only 5 mA load drive and different pinout (SOIC-8, non-compatible). | Ideal for ultra-low-drift, low-power portable instruments where 10 mA sourcing is not required. | Not pin-compatible; requires PCB redesign; preferred when sub-10 ppm total error budget is mandatory. |
Compared with REF02CSZ-REEL, ADR02ARZ-REEL offers superior accuracy and stability at modest cost increase, while MAX6126AASA50+ delivers tighter initial tolerance but sacrifices load drive and pin compatibility-making REF02CSZ-REEL optimal for cost-sensitive industrial designs needing robust 10 mA sourcing and proven field reliability.
Availability
REF02CSZ-REEL is available at Aetrix Electronics and suitable for industrial process control, precision data acquisition, calibration equipment, and military/aerospace instrumentation requiring stable component supply and long-lifecycle support.
Supply support for REF02CSZ-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, serving industrial, automotive, communications, and defense markets since 1965.
The REF02 series belongs to Analog Devices' precision voltage reference product line, engineered for applications demanding low drift, low noise, and integrated temperature sensing in harsh environments.
FAQ
What is the maximum operating temperature range for REF02CSZ-REEL?
The REF02CSZ-REEL is rated for operation from −40°C to +85°C (C-grade specification). This range is confirmed in the Absolute Maximum Ratings table and applies specifically to the Z-suffix SOIC package variant. Operation beyond this range may degrade accuracy or reliability and is not guaranteed by Analog Devices.
Does REF02CSZ-REEL require external capacitors to function?
No, REF02CSZ-REEL is internally compensated and operates stably without external capacitors. However, a 0.1 µF ceramic capacitor placed directly at the VOUT pin to GND is highly recommended to reduce low-frequency noise and improve transient response-especially under dynamic load conditions.
Can the TEMP pin of REF02CSZ-REEL be used for accurate temperature measurement?
Yes-the TEMP pin provides a linear 580 mV baseline at 25°C with a calibrated 1.96 mV/°C slope. While not a standalone temperature sensor, it enables relative die temperature tracking with ±1°C resolution when referenced to a known calibration point, supporting thermal compensation algorithms in precision systems using REF02CSZ-REEL.
What is the purpose of the TRIM pin on REF02CSZ-REEL?
The TRIM pin on REF02CSZ-REEL allows fine adjustment of the output voltage within ±3.0% of nominal (4.85–5.15 V) using an external 10 kΩ potentiometer. This feature compensates for system-level errors such as PCB trace resistance, solder-induced offset, or gain drift in downstream circuitry without requiring a new BOM.
Is REF02CSZ-REEL pin-compatible with newer ADI references like ADR02?
Yes-REF02CSZ-REEL and ADR02ARZ-REEL share identical SOIC-8 pinout, pin functions, and footprint. Analog Devices explicitly states "full pin-for-pin compatibility" in the REF01/REF02/REF03 datasheet Rev. M, making ADR02ARZ-REEL a direct upgrade path for enhanced accuracy and stability without layout changes.
REF02CSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF02
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 15µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 1.6mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF02CSZ-REEL FAQ
1.How can I place an order for REF02CSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for REF02CSZ-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 REF02CSZ-REEL reliable?
The price and inventory of REF02CSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF02CSZ-REEL is usually 5 days.
3.What payment methods are accepted for REF02CSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF02CSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF02CSZ-REEL?
REF02CSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF02CSZ-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 REF02CSZ-REEL?
For technical support, including REF02CSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF02CSZ-REEL requirements.
6.How does Aetrix verify that REF02CSZ-REEL is sourced from the original manufacturer or authorized distributors?
All REF02CSZ-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 REF02CSZ-REEL meets industry standards.
7.What is the process for return or replacement of REF02CSZ-REEL?
All REF02CSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with REF02CSZ-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 REF02CSZ-REEL part is unused and in its original packaging.
Return procedure for REF02CSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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