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Analog Devices Inc. REF01CSZ-REEL
- Part No.:
- REF01CSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01CSZ-REEL.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,045
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Product details
Overview
REF01CSZ-REEL 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 (0.1–10 Hz) low-frequency noise, 1.4 mA max quiescent current, and 10 mA load-driving capability - used in high-resolution ADC/DAC biasing, industrial sensor signal chains, and calibration subsystems.
For engineers reviewing the REF01CSZ-REEL datasheet, REF01CSZ-REEL pinout, REF01CSZ-REEL application, or REF01CSZ-REEL equivalent, this page delivers verified electrical specs, SOIC-8 package mapping, TRIM/TEMP terminal functionality, and real-world design context for precision analog systems requiring stable, low-drift references.
Technical Context
The REF01CSZ-REEL implements a laser-trimmed band gap core with PTAT and CTAT voltage summation to generate a stable 10.0 V output. Its internal op amp drives the VOUT pin with unity-gain feedback via R5/R6, enabling high load regulation (≤80 ppm/mA) and line regulation (≤100 ppm/V) across −55°C to +125°C.
It integrates dual auxiliary terminals: TEMP provides unbuffered band gap voltage (580 mV @ 25°C, 1.96 mV/°C slope) for on-chip temperature monitoring; TRIM allows ±3% output adjustment using a 10 kΩ potentiometer without degrading thermal stability.
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 metrology-grade calibration. |
| Temp Coefficient | 8.5 ppm/°C max (−55°C to +125°C) - contributes ≤±1.07 mV drift over full range, critical for wide-temperature industrial instrumentation. |
| Noise (0.1–10 Hz) | 30 µVp-p typical - supports 18+ bit ADC resolution without added filtering in precision data acquisition. |
| Supply Range | 12 V to 36 V - accommodates unregulated industrial rails while maintaining regulation down to 2 V dropout. |
| Load Drive | 10 mA sourcing - directly powers multiple op amps, ADC references, or DAC bias networks without external buffers. |
| Quiescent Current | 1.4 mA max - enables low-power operation in battery-backed calibration modules and portable test equipment. |
| Long-Term Stability | 50 ppm after 1000 hours - guarantees <±0.5 mV output shift over first 6 weeks of operation, supporting field-reliable designs. |
Pinout & Package
REF01CSZ-REEL is housed in an 8-lead SOIC package (S-suffix), with exposed pad not internally connected. Pin 1 is NC (no internal connection); pins 7 and 8 are also NC. GND (Pin 4) must be low-impedance; VIN (Pin 2) requires ≥12 V input; VOUT (Pin 6) delivers regulated 10.0 V; TRIM (Pin 5) accepts external potentiometer; TEMP (Pin 3) outputs temperature-proportional voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 7, 8 | NC | No internal connection - leave floating or tie to GND; reserved for factory testing. |
| Pin 2 | VIN | Unregulated supply input (12–36 V); requires ≥2 V headroom above VOUT for regulation. |
| Pin 3 | TEMP | Band gap voltage output (580 mV @ 25°C, 1.96 mV/°C) - enables on-die temperature sensing without external sensors. |
| Pin 4 | GND | Analog ground reference - must connect to low-noise system ground plane with short trace. |
| Pin 5 | TRIM | Voltage adjustment node - ±3% output tuning via 10 kΩ potentiometer; minimal impact on tempco. |
| Pin 6 | VOUT | Stable 10.0 V reference output - capable of sourcing 10 mA with ≤80 ppm/mA load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| High Initial Accuracy | ±0.3% (A/E grade) - reduces system calibration burden and enables single-point trimming in production test. |
| Low Temperature Drift | 8.5 ppm/°C max over −55°C to +125°C - maintains sub-millivolt stability in aerospace and automotive under-hood applications. |
| Integrated TEMP Terminal | 580 mV @ 25°C, 1.96 mV/°C slope - eliminates need for discrete temperature sensor in space-constrained PCB layouts. |
| Adjustable Output | ±3% trim range with 10 kΩ pot - compensates for PCB layout errors, solder reflow offsets, and system-level gain errors. |
| Wide Supply Range | 12 V to 36 V operation - supports direct connection to 24 V industrial buses without pre-regulation. |
Applications
| Industrial Process Transmitters | Precision Data Acquisition Systems |
|---|---|
Use Scenario: 4–20 mA loop-powered transmitter with HART modulation, operating in −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary 10.0 V reference for ADC, DAC, and sensor excitation circuitry. Use Value: 8.5 ppm/°C tempco ensures ≤±0.85 mV output drift over full temperature range, meeting SIL-2 accuracy requirements. |
Use Scenario: 24-bit delta-sigma ADC front-end in portable multimeter or calibration standard. IC Role / Device Role / Timing Role: Low-noise, high-stability reference for ADC conversion and offset correction. Use Value: 30 µVp-p (0.1–10 Hz) noise enables effective resolution >20 bits without external filtering. |
| Automotive Battery Monitoring Units | Medical Instrument Calibration Modules |
Use Scenario: High-voltage battery pack monitor in EV powertrain, measuring cell voltages up to 5 V per cell. IC Role / Device Role / Timing Role: Reference for isolated sigma-delta ADCs measuring individual cell voltages. Use Value: 10 mA load drive powers isolation amplifier bias and ADC reference simultaneously, reducing component count. |
Use Scenario: Portable ECG/EEG calibration source requiring traceable 10.0 V output with <±10 ppm/year stability. IC Role / Device Role / Timing Role: Primary voltage standard in self-calibrating medical test equipment. Use Value: 50 ppm long-term stability after 1000 hours supports annual recalibration intervals without field drift 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-REEL7 | 10.0 V, ±0.1% initial accuracy, 3 ppm/°C max tempco, 1.8 mA quiescent current - higher accuracy and lower drift than REF01CSZ-REEL. | Preferred for new designs requiring <±0.5 mV total error budget; not drop-in due to different pinout (TO-220-3 vs SOIC-8). | Select ADR01ARZ-REEL7 when upgrading legacy REF01-based systems where board redesign is acceptable and tighter spec is mandatory. |
| LT1021DCN8-10#PBF | 10.0 V, ±0.05% initial accuracy, 2 ppm/°C max tempco, 1.2 mA quiescent current - superior performance but higher cost and no TEMP pin. | Suitable for ultra-high-precision lab instruments; lacks integrated temperature monitoring function present in REF01CSZ-REEL. | Choose LT1021DCN8-10#PBF only when TEMP functionality is unnecessary and metrology-grade stability justifies premium pricing. |
Compared with REF01CSZ-REEL, ADR01ARZ-REEL7 offers significantly better accuracy and temperature stability but requires PCB layout change; LT1021DCN8-10#PBF delivers best-in-class drift performance but omits the diagnostic TEMP output, limiting its utility in condition-monitoring applications.
Availability
REF01CSZ-REEL is available at Aetrix Electronics and suitable for industrial process transmitters, precision data acquisition systems, automotive battery monitors, and medical calibration modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for REF01CSZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The REF01 series belongs to Analog Devices' precision voltage reference product line, designed specifically for applications demanding low drift, high accuracy, and integrated diagnostics - including industrial automation, test equipment, and aerospace systems.
FAQ
What is the guaranteed initial accuracy of REF01CSZ-REEL over temperature?
The REF01CSZ-REEL is specified with ±0.3% initial accuracy for A and E grades at 25°C. Over the full operating range of −55°C to +125°C, its maximum temperature coefficient is 8.5 ppm/°C, resulting in ≤±1.07 mV total drift. This combines with initial tolerance to define worst-case output deviation - REF01CSZ-REEL maintains tight absolute accuracy even in extreme environments.
Can REF01CSZ-REEL drive a 10 kΩ load directly?
Yes. REF01CSZ-REEL can source up to 10 mA while maintaining regulation, meaning it fully supports a 10 kΩ load drawing 1.0 mA at 10.0 V. Load regulation is specified at ≤80 ppm/mA, so a 1.0 mA load introduces ≤0.08 mV error - well within its ±30 mV initial accuracy window. No buffer is required for such loads.
Does REF01CSZ-REEL require external capacitors for stability?
No. REF01CSZ-REEL is internally compensated and operates stably without external capacitors. However, a 0.1 µF ceramic capacitor at VOUT is recommended to suppress low-frequency noise; adding 1–10 µF bulk capacitance improves transient response during load steps - REF01CSZ-REEL tolerates these without oscillation or instability.
How is the TEMP pin used in REF01CSZ-REEL?
The TEMP pin on REF01CSZ-REEL outputs an unbuffered band gap voltage of 580 mV at 25°C with a linear 1.96 mV/°C slope. By measuring this voltage with a high-impedance ADC, users derive die temperature - REF01CSZ-REEL's own thermal behavior - enabling real-time compensation or health monitoring without external sensors.
Is REF01CSZ-REEL pin-compatible with newer ADR01 series devices?
No. REF01CSZ-REEL uses an 8-lead SOIC package with specific pin assignments (e.g., TEMP on Pin 3, TRIM on Pin 5), while ADR01ARZ-REEL7 uses a TO-220-3 package with different pinout and no TEMP or TRIM terminals. They are functional alternatives but not pin-compatible - REF01CSZ-REEL requires dedicated layout and cannot be replaced without hardware revision.
REF01CSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF01
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF01CSZ-REEL FAQ
1.How can I place an order for REF01CSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01CSZ-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 REF01CSZ-REEL reliable?
The price and inventory of REF01CSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01CSZ-REEL is usually 5 days.
3.What payment methods are accepted for REF01CSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01CSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01CSZ-REEL?
REF01CSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01CSZ-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 REF01CSZ-REEL?
For technical support, including REF01CSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01CSZ-REEL requirements.
6.How does Aetrix verify that REF01CSZ-REEL is sourced from the original manufacturer or authorized distributors?
All REF01CSZ-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 REF01CSZ-REEL meets industry standards.
7.What is the process for return or replacement of REF01CSZ-REEL?
All REF01CSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with REF01CSZ-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 REF01CSZ-REEL part is unused and in its original packaging.
Return procedure for REF01CSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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