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Analog Devices Inc. REF01CSZ
- Part No.:
- REF01CSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01CSZ.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:799
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Product details
Overview
REF01CSZ 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, and 30 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 REF01CSZ datasheet, REF01CSZ pinout, REF01CSZ application, or REF01CSZ equivalent, this page delivers verified package mapping (8-lead SOIC-Z), terminal functions (VIN, VOUT, TRIM, TEMP, GND), load-driving capability (10 mA sourcing), and real-world design implications of its bandgap-based architecture, thermal sensing output, and trim-adjustable stability.
Technical Context
The REF01CSZ implements a laser-trimmed, two-transistor bandgap core generating a stable 10.0 V output via internal op-amp feedback across R5/R6. Its TEMP pin provides unbuffered PTAT voltage (580 mV @ 25°C, 1.96 mV/°C) directly from the bandgap node for external temperature monitoring.
It features a 2 V dropout voltage at full 10 mA load, operates from 12 V to 36 V input, draws ≤1.4 mA quiescent current, and maintains <80 ppm/mA load regulation over −55°C to +125°C (A/E grades). The SOIC-Z package enables surface-mount integration in space-constrained precision analog systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.00 V nominal, ±0.3% initial accuracy (A/E grade) - ensures ≤±30 mV absolute error at 25°C before trimming. |
| Tempco | ≤8.5 ppm/°C (−55°C to +125°C, A/E grade) - contributes ≤±1.07 mV drift over full industrial range. |
| Noise (0.1–10 Hz) | 30 µVp-p typical - supports 18+ bit ADC resolution without added filtering. |
| Load Drive | 10 mA sourcing capability - directly powers op-amp buffers or multiple downstream references. |
| Supply Range | 12 V to 36 V - accommodates wide-input industrial rails while maintaining regulation. |
| Quiescent Current | 1.4 mA max - enables low-power precision operation without sacrificing stability. |
| Trim Range | ±3.0% (A/E/H grades, 10 kΩ pot) - allows fine-tuning to compensate for PCB-level gain/offset errors. |
Pinout & Package
REF01CSZ is housed in an 8-lead SOIC package with Z-suffix (CERDIP-compatible outline, RoHS-compliant lead finish). Pin 1 is NC (no internal connection); pins 7 and 8 are also NC. GND (Pin 4) must be connected to system ground plane for optimal noise rejection and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | NC | No internal connection; leave floating or tie to GND per layout best practice - reserved for factory test only. |
| 2 | VIN | Main supply input; requires ≥12 V and ≤36 V; decoupling capacitor (0.1 µF ceramic) mandatory at pin. |
| 3 | TEMP | Unbuffered bandgap PTAT output (580 mV @ 25°C, 1.96 mV/°C); use for external temperature sensing or compensation. |
| 4 | GND | Analog ground reference; connect to low-impedance ground plane to minimize noise coupling and thermal gradients. |
| 5 | TRIM | Adjustment node for ±3% output tuning via external 10 kΩ potentiometer; affects DC accuracy but not tempco. |
| 6 | VOUT | Stable 10.0 V reference output; requires 0.1 µF ceramic capacitor to ground for stability and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed bandgap core | Delivers ±0.3% initial accuracy and <8.5 ppm/°C tempco without external calibration. |
| Integrated TEMP terminal | Provides factory-calibrated 1.96 mV/°C analog temperature output for system-level thermal monitoring. |
| Trim-adjustable output | Enables post-assembly correction of system-level errors (e.g., amplifier offset, PCB trace resistance). |
| High PSRR & line regulation | 100 ppm/V line regulation minimizes sensitivity to supply ripple in noisy industrial environments. |
| Robust load regulation | 80 ppm/mA performance ensures <±0.8 mV output shift across full 10 mA load range. |
Applications
| Industrial Process Transmitters | Precision Data Acquisition Systems |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter with HART modulation requiring stable excitation and ADC reference. IC Role / Device Role / Timing Role: Primary 10 V reference for DAC-controlled current output stage and SAR ADC front-end. Use Value: Enables ±0.05% full-scale accuracy over −40°C to +85°C ambient, meeting IEC 61000-4-2/4-4 immunity requirements. |
Use Scenario: Portable 24-bit sigma-delta data logger measuring strain gauges and thermocouples. IC Role / Device Role / Timing Role: Master reference for both ADC and programmable-gain amplifier (PGA) bias network. Use Value: 30 µVp-p low-frequency noise prevents degradation of effective resolution below 20 bits. |
| Calibration Equipment | Aerospace Sensor Interfaces |
Use Scenario: Benchtop multimeter calibration source requiring traceable 10 V output with <5 ppm/year drift. IC Role / Device Role / Timing Role: Primary voltage standard in self-calibrating reference subsystem with periodic auto-zero. Use Value: 50 ppm long-term stability after 1000 hours supports annual recalibration intervals without hardware replacement. |
Use Scenario: Flight control sensor interface board operating in −55°C to +125°C extended temperature range. IC Role / Device Role / Timing Role: Reference for radiation-hardened ADCs sampling inertial measurement unit (IMU) signals. Use Value: Guaranteed 8.5 ppm/°C tempco over full military range eliminates need for software temperature compensation. |
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 | Higher accuracy (±0.1%), lower tempco (3 ppm/°C), same 10 V output and SOIC-8 package. | Required where <10 ppm total error budget demands tighter initial tolerance and thermal drift. | Preferred for new designs needing improved metrology-grade performance; pin-compatible drop-in replacement. |
| REF5010AIDR | Lower noise (12 µVp-p), higher cost, same 10 V output, SOIC-8, but no TEMP pin or trim function. | Suitable when ultra-low noise dominates over temperature monitoring or field calibration capability. | Select when system prioritizes noise floor over diagnostics or post-production adjustment. |
Compared with REF01CSZ, ADR01ARZ improves initial accuracy and thermal stability at identical footprint and supply conditions, while REF5010AIDR sacrifices trim and temperature sensing for superior noise performance - enabling trade-offs between calibration flexibility, long-term stability, and signal integrity.
Availability
REF01CSZ is available at Aetrix Electronics and suitable for industrial process transmitters, precision data acquisition systems, and calibration equipment requiring stable component supply with guaranteed long-term availability and traceable lot documentation.
Supply support for REF01CSZ 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 healthcare markets since 1965.
The REF01 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for metrology-grade accuracy, low-drift operation, and integrated diagnostics (TEMP/ TRIM) in harsh-environment instrumentation.
FAQ
What is the maximum input voltage for REF01CSZ?
The absolute maximum input voltage for REF01CSZ is 36.0 V, with recommended operating range from 12 V to 36 V. Exceeding 36 V risks permanent damage. At minimum input, the device requires ≥2 V headroom above output (i.e., ≥12 V for 10 V output) to maintain regulation and specified accuracy.
Does REF01CSZ require external capacitors to operate stably?
Yes - REF01CSZ is internally compensated but requires a 0.1 µF ceramic capacitor from VOUT to GND for stability and noise suppression. An additional 1–10 µF bulk capacitor may be added in parallel for improved transient response. Input capacitance (0.1 µF ceramic + 1–10 µF bulk) is also recommended for supply ripple rejection.
Can the TEMP pin on REF01CSZ be used for accurate temperature measurement?
Yes - the TEMP pin provides a factory-characterized PTAT voltage (580 mV at 25°C, 1.96 mV/°C) directly from the bandgap core. Accuracy is typically ±1.5°C over −40°C to +85°C when calibrated at one point; it enables system-level thermal monitoring without adding discrete sensors.
What is the purpose of the TRIM pin on REF01CSZ?
The TRIM pin allows ±3.0% adjustment of the 10.0 V output using an external 10 kΩ potentiometer. It compensates for system-level errors such as amplifier offset, PCB trace resistance, or solder-induced stress - enabling final calibration without modifying firmware or hardware layout.
Is REF01CSZ pin-compatible with newer Analog Devices references like ADR01?
Yes - REF01CSZ is fully pin-compatible with ADR01ARZ and ADR01BRZ in SOIC-8 packages. The ADR01 offers improved specifications (±0.1% accuracy, 3 ppm/°C tempco) while retaining identical pinout, voltage ratings, and basic functionality - making it a direct drop-in upgrade for enhanced performance.
REF01CSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF01
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF01CSZ FAQ
1.How can I place an order for REF01CSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01CSZ 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 REF01CSZ reliable?
The price and inventory of REF01CSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01CSZ is usually 5 days.
3.What payment methods are accepted for REF01CSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01CSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01CSZ?
REF01CSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01CSZ 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 REF01CSZ?
For technical support, including REF01CSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01CSZ requirements.
6.How does Aetrix verify that REF01CSZ is sourced from the original manufacturer or authorized distributors?
All REF01CSZ 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 REF01CSZ meets industry standards.
7.What is the process for return or replacement of REF01CSZ?
All REF01CSZ units undergo pre-shipment inspection (PSI). If there is an issue with REF01CSZ, 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 REF01CSZ part is unused and in its original packaging.
Return procedure for REF01CSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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