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Analog Devices Inc. REF01CPZ
- Part No.:
- REF01CPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
REF01CPZ.pdf
- Description:
- IC VREF SERIES 1% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:221
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Product details
Overview
REF01CPZ from Analog Devices is a precision 10.0 V voltage reference IC with ±0.3% initial accuracy (A/E grade), 8.5 ppm/°C max temperature coefficient, 30 µVp-p low-frequency noise (0.1–10 Hz), 1.4 mA max quiescent current, and 10 mA load-driving capability - used as a stable excitation source in high-resolution ADCs and DACs within industrial data acquisition systems.
For engineers reviewing the REF01CPZ datasheet, REF01CPZ pinout, REF01CPZ application, or REF01CPZ equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases in precision instrumentation, and two confirmed alternative references with documented technical and application-level differences.
Technical Context
The REF01CPZ implements a laser-trimmed bandgap core with PTAT and CTAT voltage generation, delivering a fixed 10.0 V output via internal resistive feedback (R5/R6). Its TEMP pin provides unbuffered bandgap voltage (580 mV at 25°C) with 1.96 mV/°C sensitivity for on-chip temperature monitoring.
It features an integrated trim terminal enabling ±3% output adjustment using a 10 kΩ potentiometer, and supports operation from 12 V to 36 V input while maintaining stability without external capacitors - though 0.1 µF ceramic output capacitance is recommended for noise reduction and transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal, ±0.3% initial accuracy (A/E grade) - ensures ≤±30 mV absolute error at 25°C for calibration-critical signal chains. |
| Temp Coefficient | 8.5 ppm/°C max (−55°C to +125°C) - contributes ≤±0.935 mV drift over full industrial range, enabling <16-bit stability. |
| Noise (0.1–10 Hz) | 30 µVp-p typical - limits RMS noise to ~9 µV, supporting 20+ bit effective resolution in low-speed precision converters. |
| Supply Range | 12 V to 36 V - allows direct use with standard industrial 24 V rails and accommodates wide-line variations without dropout. |
| Load Drive | 10 mA sourcing capability - directly drives ADC reference inputs, op-amp buffers, or multiple 12-bit DACs without external gain stage. |
| Quiescent Current | 1.4 mA max - enables low-power operation in battery-backed or energy-constrained precision modules. |
| Dropout Voltage | 2 V - requires only 12 V minimum input for 10 V output, simplifying supply design versus higher-dropout references. |
Pinout & Package
REF01CPZ is supplied in an 8-lead CERDIP (Z-suffix) package with hermetic ceramic-glass seal, rated for −40°C to +85°C operation and suitable for high-reliability industrial and aerospace applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC (No Connect) | Internally unconnected; must remain floating or tied to GND - not for user routing or testing. |
| 2 | VIN | Main supply input (12–36 V); decoupling capacitor placement here suppresses rail noise coupling into reference core. |
| 3 | TEMP | Unbuffered bandgap voltage output (580 mV @ 25°C, 1.96 mV/°C) - used for die temperature estimation, not for regulation. |
| 4 | GND | Analog ground reference; must be low-impedance, star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | Adjustment node for ±3% output tuning via external 10 kΩ potentiometer - enables system-level calibration of total chain error. |
| 6 | VOUT | Stable 10.0 V reference output; requires 0.1 µF ceramic capacitor to ground for optimal noise and transient performance. |
Key Features
| Feature | Design Value |
|---|---|
| High initial accuracy | ±0.3% (A/E grade) - reduces or eliminates need for post-production trimming in factory calibration workflows. |
| Low long-term drift | 50 ppm after 1000 hours - ensures <0.5 mV output shift over first 6 weeks of operation, critical for field-deployed instruments. |
| Integrated temp sensor | 580 mV @ 25°C, 1.96 mV/°C slope - enables self-monitoring of thermal stress without adding discrete sensors or analog front-end components. |
| Wide supply tolerance | 12 V to 36 V input range - eliminates need for dedicated LDO pre-regulation in 24 V industrial systems. |
| Fast turn-on settling | 5 µs to ±0.1% - supports rapid power cycling in portable test equipment and automated measurement systems. |
Applications
| Industrial Process Transmitters | Precision Data Acquisition Systems |
|---|---|
Use Scenario: 4–20 mA loop-powered transmitter conditioning analog sensor signals (e.g., RTD, strain gauge) before digitization. IC Role / Device Role / Timing Role: Provides stable 10.0 V excitation for ratiometric bridge sensing and serves as ADC reference for 16–24 bit sigma-delta converters. Use Value: Enables <±0.05% total unadjusted error (TUE) across temperature, eliminating recalibration during field deployment. |
Use Scenario: Modular DAQ card for laboratory-grade voltage/current measurements with programmable gain and filtering. IC Role / Device Role / Timing Role: Serves as master reference for dual-channel 24-bit ADCs and DACs, synchronized via shared clock domain. Use Value: Delivers <1 LSB INL error over −40°C to +85°C, meeting IEEE 1057 Class A requirements for metrology-grade digitizers. |
| Aerospace Avionics Sensors | Calibration Equipment |
Use Scenario: Onboard inertial measurement unit (IMU) with MEMS accelerometers and gyros requiring bias stability under vibration and thermal shock. IC Role / Device Role / Timing Role: Supplies excitation and reference for analog front-end instrumentation amplifiers and anti-alias filters. Use Value: Hermetic CERDIP packaging and 8.5 ppm/°C TC ensure <±10 ppm output shift during rapid thermal transients (e.g., cabin pressurization cycles). |
Use Scenario: Benchtop multimeter or calibrator generating traceable DC voltage standards from 100 mV to 10 V ranges. IC Role / Device Role / Timing Role: Primary 10 V reference source, buffered and scaled via precision resistor networks for lower-range outputs. Use Value: ±0.3% initial accuracy and 50 ppm long-term stability support annual recalibration intervals per ISO/IEC 17025 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 |
|---|---|---|---|
| ADR01ARZ | 10.0 V, ±0.1% initial accuracy, 3 ppm/°C TC, 1.8 mA IQ, SOIC-8 - higher accuracy and lower drift, but no TEMP pin. | Used where ultra-stable reference is prioritized over on-die temperature monitoring; unsuitable for thermal compensation schemes requiring TEMP output. | Select ADR01ARZ when long-term stability (<20 ppm/1000h) and sub-ppm/°C TC are required, and thermal sensing is handled externally. |
| REF5010AID | 10.0 V, ±0.05% initial accuracy, 3 ppm/°C TC, 3.8 mA IQ, SOIC-8 - lowest drift in TI portfolio, includes enable pin, no TEMP function. | Preferred in battery-powered portable calibrators where ultra-low drift dominates power budget concerns; lacks trim and TEMP functionality. | Choose REF5010AID for metrology-grade handheld instruments needing highest accuracy, accepting higher quiescent current and no thermal monitoring. |
Compared with REF01CPZ, ADR01ARZ offers superior accuracy and temperature stability but removes the TEMP pin and trim capability - making it ideal for static reference roles. REF5010AID delivers the lowest drift but consumes more current and omits both trim and temperature sensing, limiting its use in adaptive or thermally compensated designs.
Availability
REF01CPZ is available at Aetrix Electronics and suitable for industrial process transmitters, precision data acquisition systems, aerospace avionics sensors, and calibration equipment requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for REF01CPZ 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, serving industrial, communications, automotive, and defense markets since 1965.
The REF01/REF02/REF03 series was designed specifically for high-accuracy, wide-temperature industrial and aerospace instrumentation - emphasizing laser-trimmed stability, hermetic packaging options, and integrated diagnostics like the TEMP pin.
FAQ
What is the operating temperature range for the REF01CPZ?
The REF01CPZ is rated for −40°C to +85°C operation (C grade, Z-package). This range is validated per the Absolute Maximum Ratings table and supported by temperature coefficient and load regulation specs across that span. The device maintains 8.5 ppm/°C max TC only in A/E grades over −55°C to +125°C - not applicable to the CPZ variant. REF01CPZ performance remains fully specified within its stated industrial temperature window.
Does REF01CPZ require external capacitors for stable operation?
REF01CPZ functions stably without external capacitors, but a 0.1 µF ceramic capacitor from VOUT to GND is highly recommended to reduce 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. Input capacitance is optional but advised for noisy supplies.
Can the TEMP pin on REF01CPZ be used for closed-loop thermal compensation?
Yes - the TEMP pin provides unbuffered bandgap voltage (580 mV at 25°C, 1.96 mV/°C) directly usable for real-time die temperature estimation. It is not intended as a regulated output, but its linear slope enables software-based compensation of reference drift or sensor offset in systems like precision RTD transmitters or calibrated DAQ modules using REF01CPZ.
What is the maximum load current REF01CPZ can drive while maintaining specification?
REF01CPZ guarantees 10 mA sourcing capability while maintaining output accuracy, line/load regulation, and noise specs. This is validated across all grades and packages per the "Load Current" parameter in the REF01 Specifications table. Sinking capability is limited to −0.3 mA; exceeding 10 mA sourcing risks output droop beyond the 80 ppm/mA load regulation limit and potential thermal overload.
Is REF01CPZ pin-compatible with newer alternatives like ADR01ARZ?
Yes - ADR01ARZ is explicitly designed as a pin-for-pin upgrade to REF01CPZ in SOIC-8 packaging, sharing identical pinout (VIN, GND, TEMP, VOUT, TRIM, NC positions). However, ADR01ARZ does not implement the TEMP function - Pin 3 is a no-connect. Users retaining TEMP functionality must verify circuit compatibility or select alternate solutions.
REF01CPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- REF01
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 8 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 30µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 33V
- Current - Supply:
- 1.6mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
REF01CPZ FAQ
1.How can I place an order for REF01CPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01CPZ 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 REF01CPZ reliable?
The price and inventory of REF01CPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01CPZ is usually 5 days.
3.What payment methods are accepted for REF01CPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01CPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01CPZ?
REF01CPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01CPZ 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 REF01CPZ?
For technical support, including REF01CPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01CPZ requirements.
6.How does Aetrix verify that REF01CPZ is sourced from the original manufacturer or authorized distributors?
All REF01CPZ 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 REF01CPZ meets industry standards.
7.What is the process for return or replacement of REF01CPZ?
All REF01CPZ units undergo pre-shipment inspection (PSI). If there is an issue with REF01CPZ, 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 REF01CPZ part is unused and in its original packaging.
Return procedure for REF01CPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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