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Analog Devices Inc. REF02CPZ
- Part No.:
- REF02CPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
REF02CPZ.pdf
- Description:
- IC VREF SERIES 1% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:718
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Product details
Overview
REF02CPZ from Analog Devices is a precision 5.0 V voltage reference IC in an 8-lead CERDIP (Z-suffix) package, featuring ±0.3% initial accuracy (A/E grade), 8.5 ppm/°C max temperature coefficient, 15 µVp-p (0.1–10 Hz) low-frequency noise, 1.4 mA max quiescent current, and 10 mA load-driving capability. It serves as a stable excitation source or calibration reference in high-resolution ADC/DAC signal chains for industrial process control systems.
For engineers reviewing the REF02CPZ datasheet, REF02CPZ pinout, REF02CPZ application, or REF02CPZ equivalent, key selection criteria include output stability over −40°C to +85°C, trim-adjustable output (±3%), integrated temperature sensing (580 mV @ 25°C, 1.96 mV/°C), dropout voltage ≤2 V, and compatibility with minimal external components (0.1 µF output capacitor recommended).
Technical Context
The REF02CPZ implements a laser-trimmed band gap core with PTAT and CTAT voltage summation to generate a stable 5.0 V output. Its internal op amp and feedback network (R5/R6) set precise gain, while the unbuffered TEMP pin provides direct access to the band gap voltage for linear temperature monitoring.
It supports output trimming via an external 10 kΩ potentiometer connected to the TRIM pin, enabling system-level calibration of line/load errors and thermal hysteresis. The device operates with input voltages from 7.0 V to 36 V and maintains regulation under sourcing loads up to 10 mA without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal; A/E grade tolerance ±0.3% (±15 mV) ensures calibration-grade accuracy in metrology-grade converters. |
| Temperature Coefficient | ≤8.5 ppm/°C (−55°C to +125°C); enables <±0.43 mV drift over full industrial range, critical for unheated precision instruments. |
| Voltage Noise | 15 µVp-p (0.1–10 Hz); low flicker noise preserves SNR in 18+ bit data acquisition systems. |
| Load Regulation | ≤100 ppm/mA (A/E grade); <±0.5 mV shift across 10 mA load change, supporting dynamic sensor excitation. |
| Quiescent Current | 1.4 mA max; enables low-power operation in battery-backed or energy-constrained embedded controllers. |
| Input Voltage Range | 7.0 V to 36 V; accommodates wide-supply industrial rails (e.g., 12 V, 24 V) without pre-regulation. |
| Dropout Voltage | 2 V max; allows operation from 7 V input while delivering 5 V output, simplifying power architecture. |
Pinout & Package
REF02CPZ uses an 8-lead CERDIP (Z-suffix) ceramic dual-in-line package with 0.3-inch body width, hermetically sealed for high-reliability industrial and military applications. Pin 1 is top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC (No Connect) | Internally unconnected; must remain floating or tied to GND-no signal routing or decoupling allowed. |
| 2 | VIN | Unregulated DC input supply; requires ≥7.0 V and ≤36 V; 0.1 µF ceramic capacitor recommended at pin. |
| 3 | TEMP | Band gap voltage output (580 mV @ 25°C, 1.96 mV/°C); used for passive temperature sensing without external circuitry. |
| 4 | GND | Analog ground reference; must connect to clean, low-impedance system ground plane to minimize noise coupling. |
| 5 | TRIM | Output voltage adjustment node; accepts external 10 kΩ potentiometer for ±3% fine-tuning of VOUT. |
| 6 | VOUT | Stable 5.0 V reference output; capable of sourcing 10 mA; 0.1 µF ceramic capacitor strongly recommended for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed band gap core | Enables ±0.3% initial accuracy and <8.5 ppm/°C TCVO without external calibration. |
| Integrated temperature sensor | Direct TEMP pin output (580 mV @ 25°C, ±1.96 mV/°C) eliminates need for discrete thermal sensors in compact designs. |
| Trim-adjustable output | ±3% output range via external potentiometer compensates for PCB layout tolerances and solder reflow drift. |
| Wide input voltage range | 7.0 V to 36 V operation supports direct connection to unregulated industrial power rails, reducing BOM count. |
| Low-noise 5.0 V reference | 15 µVp-p (0.1–10 Hz) noise floor preserves ENOB in high-resolution SAR and sigma-delta ADCs. |
Applications
| Industrial Process Control | Precision Data Acquisition |
|---|---|
Use Scenario: 4–20 mA transmitter calibration and loop-powered sensor signal conditioning in factory automation. IC Role / Device Role / Timing Role: Primary voltage reference for DAC output scaling and ADC input full-scale setting. Use Value: ±0.3% initial accuracy and 8.5 ppm/°C TCVO ensure <±0.1% total error over temperature, meeting SIL-2 functional safety margin requirements. |
Use Scenario: High-resolution (≥18-bit) data loggers measuring strain gauges, RTDs, and thermocouples. IC Role / Device Role / Timing Role: Excitation source for ratiometric bridge circuits and reference for successive-approximation ADCs. Use Value: 15 µVp-p low-frequency noise directly limits system noise floor, enabling sub-10 µV resolution without averaging. |
| Military/Aerospace Instrumentation | Precision Test & Measurement Equipment |
Use Scenario: Portable field test sets requiring stable calibration references across extended temperature ranges (−40°C to +85°C). IC Role / Device Role / Timing Role: On-board reference for self-calibration routines and analog front-end gain/offset correction. Use Value: Hermetic CERDIP (Z-suffix) packaging ensures long-term reliability and resistance to moisture/halogen exposure in harsh environments. |
Use Scenario: Benchtop multimeters and source-measure units requiring traceable, low-drift voltage standards. IC Role / Device Role / Timing Role: Secondary reference for auto-zeroing amplifiers and digital offset compensation algorithms. Use Value: 50 ppm long-term stability after 1000 hours enables >12-month calibration intervals without recalibration. |
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 | Higher initial accuracy (±0.1%), lower TCVO (3 ppm/°C), same 5.0 V output and SOIC-8 package-but no TEMP pin. | Lacks integrated temperature monitoring; unsuitable where on-chip thermal sensing is required. | Choose ADR02ARZ when ultimate accuracy and stability outweigh need for built-in temperature sensing. |
| REF5050AID | Lower noise (4.8 µVp-p), higher PSRR (120 dB), but fixed 5.0 V output and no TRIM/TEMP pins; SOIC-8 package. | No output adjustment or temperature monitoring; optimized for ultra-low-noise, not multifunction use cases. | Choose REF5050AID only when noise performance is primary concern and trim/temp features are unnecessary. |
Compared with REF02CPZ, ADR02ARZ improves accuracy and temperature stability but removes the TEMP pin functionality, while REF5050AID reduces noise by >65% yet sacrifices both trim adjustability and temperature sensing-making REF02CPZ uniquely balanced for multifunction, calibration-critical industrial systems.
Availability
REF02CPZ is available at Aetrix Electronics and suitable for industrial process control, precision data acquisition, military instrumentation, and test & measurement equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for REF02CPZ 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 aerospace markets since 1965.
The REF02CPZ belongs to the REF01/REF02/REF03 series-a family of laser-trimmed band gap voltage references designed for calibration-grade stability in space-constrained, high-reliability applications where accuracy, low noise, and multifunction capability (trim + temp sensing) are essential.
FAQ
What is the operating temperature range for the REF02CPZ?
The REF02CPZ is rated for −40°C to +85°C operation (C grade, Z-suffix package). This range is validated per the datasheet's Absolute Maximum Ratings table and applies specifically to the CPZ variant, making it suitable for industrial environments without forced cooling or heating.
Does the REF02CPZ require external capacitors to operate stably?
While the REF02CPZ functions stably without external components, a 0.1 µF ceramic capacitor is strongly recommended at the VOUT pin to suppress low-frequency noise and improve transient response. An additional 1–10 µF bulk capacitor may be added in parallel for improved load-step immunity, though it increases turn-on settling time.
Can the REF02CPZ be used to monitor temperature, and how accurate is it?
Yes-the REF02CPZ provides a dedicated TEMP pin with 580 mV output at 25°C and a linear sensitivity of 1.96 mV/°C. Accuracy depends on system-level calibration; typical drift is <±2 mV over −40°C to +85°C, enabling ±1°C resolution when referenced to a known point.
What is the maximum load current the REF02CPZ can source?
The REF02CPZ can continuously source up to 10 mA (A/E/H grades) while maintaining specified accuracy and regulation. Output voltage deviation remains within ±100 ppm/mA load regulation limit, corresponding to <±0.5 mV shift across full 10 mA range at 5.0 V output.
Is the REF02CPZ pin-compatible with newer Analog Devices references like the ADR02?
No-while the ADR02ARZ offers pin-for-pin compatibility with the REF02 series in SOIC-8, the REF02CPZ is a CERDIP (Z-suffix) package with different pinout and thermal characteristics. The ADR02ARZ lacks the TEMP pin and uses different internal trimming, so direct substitution requires board redesign and validation.
REF02CPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- REF02
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
REF02CPZ FAQ
1.How can I place an order for REF02CPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF02CPZ 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 REF02CPZ reliable?
The price and inventory of REF02CPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF02CPZ is usually 5 days.
3.What payment methods are accepted for REF02CPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF02CPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF02CPZ?
REF02CPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF02CPZ 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 REF02CPZ?
For technical support, including REF02CPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF02CPZ requirements.
6.How does Aetrix verify that REF02CPZ is sourced from the original manufacturer or authorized distributors?
All REF02CPZ 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 REF02CPZ meets industry standards.
7.What is the process for return or replacement of REF02CPZ?
All REF02CPZ units undergo pre-shipment inspection (PSI). If there is an issue with REF02CPZ, 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 REF02CPZ part is unused and in its original packaging.
Return procedure for REF02CPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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