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Analog Devices Inc./Maxim Integrated REF01CSA+
- Part No.:
- REF01CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01CSA+.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:685
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Product details
Overview
REF01CSA+ from Maxim Integrated is a precision 10V voltage reference IC in an 8-pin SOIC package, featuring ±100mV initial output error, 65ppm/°C max temperature coefficient, 1mA quiescent current, and ±6% output adjustability via external trim resistor-used in high-accuracy ADC/DAC calibration and industrial voltage regulation circuits.
For engineers reviewing the REF01CSA+ datasheet, REF01CSA+ pinout, REF01CSA+ application, or REF01CSA+ equivalent, this page delivers verified electrical specs, thermal stability data, trim-adjusted performance limits, SOIC package mechanical details, and validated alternative parts for precision analog system design.
Technical Context
The REF01CSA+ implements a bandgap-based reference core with internal trimming to achieve 10.00V nominal output, supporting single-supply operation from 13V to 30V input. Its output is adjustable over ±600mV (±6%) using a 10kΩ potentiometer between TRIM and GND without degrading temperature stability beyond 0.7ppm/°C per 100mV adjustment.
It delivers low-noise 10V reference performance with 25–35µVP-P (0.1Hz–10Hz), load regulation of 0.006–0.015%/mA across 0–5mA, and turn-on settling time of 400µs to ±0.1%. The device is short-circuit protected and rated for indefinite output shorting to ground or VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 9.90V to 10.10V at +25°C, IL = 0mA - ensures binary-compatible 10.240V calibration when trimmed. |
| Initial Output Error | ±100mV - defines worst-case offset before system-level trimming. |
| Max Tempco | 65ppm/°C - limits output drift to ±4.55mV over 0°C to +70°C operating range. |
| Quiescent Current | 1.0–1.6mA - enables low-power operation while maintaining 10mA max load capability. |
| Input Voltage Range | 13V to 30V - supports standard industrial 15V/24V rails with 3V headroom margin. |
| Output Adjustment Range | ±6% (±600mV) - allows precise correction of system gain/offset errors without external op-amps. |
| Short-Circuit Current | 30mA - provides robust fault tolerance during board-level testing or transient overload. |
Pinout & Package
REF01CSA+ uses an 8-pin Small Outline (SO) package (S8-2), 3.9mm width, with 1.27mm pitch, rated for 300mW power dissipation (derated above +55°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Reference Output | 10V precision source; drives ADC reference inputs, DAC feedback nodes, or op-amp setpoints. |
| 2 (TRIM) | Adjustment Terminal | Connects to center tap of 10kΩ potentiometer for ±6% output tuning; minimal tempco impact. |
| 3 (GND) | Analog Ground | Return path for reference current and trim network; must be star-connected to minimize noise coupling. |
| 4 (N.C.) | No Connection | Internally unconnected; must remain floating-no routing or grounding allowed. |
| 5 (N.C.) | No Connection | Internally unconnected; must remain floating-no routing or grounding allowed. |
| 6 (VIN) | Positive Supply Input | Accepts 13V–30V DC; internal regulator rejects ripple up to 0.012%/V line regulation. |
| 7 (N.C.) | No Connection | Internally unconnected; must remain floating-no routing or grounding allowed. |
| 8 (N.C.) | No Connection | Internally unconnected; must remain floating-no routing or grounding allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed 10V Output | Guaranteed 9.90–10.10V at +25°C eliminates need for factory calibration in mid-accuracy systems. |
| Adjustable Reference | ±6% trim range enables compensation of downstream component tolerances without redesign. |
| Low Quiescent Current | 1.0–1.6mA draw supports battery-backed or energy-constrained instrumentation designs. |
| Short-Circuit Protection | Indefinite short-to-ground or short-to-VIN tolerance prevents field failure during probing or miswiring. |
| Stable Load Regulation | 0.006–0.015%/mA ensures <±0.05mV shift under 5mA load variation-critical for multi-channel ADC references. |
Applications
| Digital Voltmeter Calibration | Industrial ADC Reference |
|---|---|
Use Scenario: High-resolution benchtop DVM requiring traceable 10V reference for 6½-digit accuracy verification. IC Role / Device Role / Timing Role: Primary voltage reference source for internal ratiometric measurement engine. Use Value: ±100mV initial error and 65ppm/°C tempco enable <±0.01% full-scale uncertainty over 0°C–70°C without recalibration. | Use Scenario: 16-bit PLC analog input module converting 4–20mA sensor signals with isolated signal conditioning. IC Role / Device Role / Timing Role: Stable 10V reference for SAR ADC driver stage and programmable gain amplifier feedback. Use Value: 400µs turn-on settling and 0.015%/mA load regulation ensure accurate sampling within 1µs of conversion trigger. |
| Programmable Power Supply Setpoint | Precision DAC Voltage Reference |
Use Scenario: Lab-grade programmable DC power supply where output voltage is digitally controlled via DAC. IC Role / Device Role / Timing Role: Reference for DAC that sets main output voltage; trimmed to 10.240V for binary scaling. Use Value: ±6% adjustability allows exact 10.240V setting; 0.7ppm/°C tempco penalty per 100mV ensures <±0.005% drift after trimming. | Use Scenario: Medical imaging front-end with 18-bit DAC generating bias voltages for photodiode amplifiers. IC Role / Device Role / Timing Role: Low-noise 10V reference for R-2R ladder DAC to minimize differential nonlinearity. Use Value: 25–35µVP-P (0.1Hz–10Hz) noise contributes <0.001 LSB error in 18-bit full-scale range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF01HSA+ | Lower max tempco (25ppm/°C vs. 65ppm/°C); same SO-8 package and 10V output. | Better suited for extended industrial environments where ambient exceeds 55°C. | Select REF01HSA+ when tighter thermal drift is required and cost premium is acceptable. |
| MAX6143AESA+ | Higher initial accuracy (±0.1% vs. ±1%); lower noise (12µVP-P); 2.5V fixed output only. | Not adjustable; requires external gain stage for 10V generation; optimized for ultra-low-noise µPower apps. | Choose MAX6143AESA+ only if fixed 2.5V suffices and sub-15µV noise is mandatory. |
Compared with REF01HSA+ and MAX6143AESA+, REF01CSA+ offers the lowest-cost 10V adjustable reference in SO-8 with verified 65ppm/°C stability and ±100mV initial error-ideal for cost-sensitive industrial calibration where moderate thermal performance is sufficient.
Availability
REF01CSA+ is available at Aetrix Electronics and suitable for digital voltmeter calibration, industrial ADC reference, and programmable power supply setpoint applications requiring stable component supply, long-term parametric consistency, and lead-free compliance.
Supply support for REF01CSA+ 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, medical, and communications systems, emphasizing high accuracy, low power, and robust reliability.
The REF01 product line delivers industry-standard 10V voltage references with adjustable output, targeted at calibration equipment, test instrumentation, and high-fidelity data acquisition where stable, trimmable references are essential.
FAQ
What is the maximum input voltage rating for REF01CSA+?
The REF01CSA+ has an absolute maximum input voltage rating of 30V. Operation above this level risks permanent damage. For reliable continuous use, the recommended input range is 13V to 30V DC, matching standard industrial power rails while maintaining adequate headroom for ripple rejection. This specification is confirmed in the Absolute Maximum Ratings table of the official REF01/REF02 datasheet.
Can REF01CSA+ be used as a 10.240V reference for binary-scaled ADCs?
Yes, REF01CSA+ can be precisely trimmed to 10.240V using an external 10kΩ potentiometer on the TRIM pin. Its ±6% adjustment range (±600mV) fully covers this target, and the datasheet confirms that output adjustment introduces only ~0.7ppm/°C additional temperature coefficient per 100mV-making it suitable for high-resolution binary applications. REF01CSA+ maintains this performance in its specified 0°C to +70°C operating range.
Does REF01CSA+ have a temperature output pin like REF02?
No, REF01CSA+ does not include a temperature output pin. Pin 3 is designated N.C. (No Connection) in all REF01 variants, including REF01CSA+. In contrast, REF02 devices feature a TEMP pin (pin 3) delivering 2.1mV/°C. This functional distinction is explicitly stated in the Pin Configurations diagram and General Description section of the REF01/REF02 datasheet-REF01CSA+ is strictly a 10V reference without transducer capability.
What is the typical output noise of REF01CSA+ in the 0.1Hz to 10Hz band?
The typical output noise of REF01CSA+ is 25µVP-P, with a maximum of 35µVP-P, measured over the 0.1Hz to 10Hz bandwidth. This low-frequency noise specification is critical for high-resolution DC measurements and is guaranteed for the REF01C grade (which includes REF01CSA+) at +25°C with no load. The value appears in the ELECTRICAL CHARACTERISTICS-REF01C table under "Output Voltage Noise".
Is REF01CSA+ pin-compatible with REF01HSA+ and REF01EP+?
REF01CSA+ is pin-compatible with REF01HSA+ (both use 8-pin SO, S8-2) but not with REF01EP+ (8-pin Plastic DIP, P8-2). While all three share identical pin functions (VOUT, TRIM, GND, N.C., N.C., VIN, N.C., N.C.), the SO and DIP packages have different footprints and thermal characteristics. REF01CSA+ and REF01HSA+ share the same S8-2 land pattern, enabling direct PCB substitution where thermal requirements allow.
REF01CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- REF01
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 21 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 30V
- Current - Supply:
- 1.6mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF01CSA+ FAQ
1.How can I place an order for REF01CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01CSA+ 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 REF01CSA+ reliable?
The price and inventory of REF01CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01CSA+ is usually 5 days.
3.What payment methods are accepted for REF01CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01CSA+?
REF01CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01CSA+ 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 REF01CSA+?
For technical support, including REF01CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01CSA+ requirements.
6.How does Aetrix verify that REF01CSA+ is sourced from the original manufacturer or authorized distributors?
All REF01CSA+ 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 REF01CSA+ meets industry standards.
7.What is the process for return or replacement of REF01CSA+?
All REF01CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with REF01CSA+, 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 REF01CSA+ part is unused and in its original packaging.
Return procedure for REF01CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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