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Analog Devices Inc./Maxim Integrated REF01HSA+
- Part No.:
- REF01HSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01HSA+.pdf
- Description:
- IC VREF SERIES 0.5% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
REF01HSA+ from Maxim Integrated is a precision +10V voltage reference IC in 8-pin SO package, featuring ±50mV initial output error, 25ppm/°C max temperature coefficient over 0°C to +70°C, 10V nominal output adjustable ±6%, and 1mA quiescent current. It serves as a stable reference for high-accuracy data converters and calibration circuits in industrial instrumentation.
For engineers reviewing the REF01HSA+ datasheet, REF01HSA+ pinout, REF01HSA+ application, or REF01HSA+ equivalent, this page delivers verified electrical specs, SO-package terminal mapping, real-world use cases in ADC/DAC systems, and two validated alternative parts with documented functional trade-offs.
Technical Context
The REF01HSA+ implements a bandgap-based reference core with internal trimming for 10V output, supporting external adjustment via a 10kΩ potentiometer between TRIM and GND. Its single-supply operation accepts 13V to 33V input while delivering up to 21mA load current and maintaining ±0.1% settling in 400µs.
Unlike the REF02 family, REF01HSA+ has no TEMP pin - pin 3 is NC (no connection). Its output stability relies on low thermal hysteresis and minimal self-heating effects, with line regulation of 0.012%/V and load regulation of 0.012%/mA across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.00 V ±50 mV at TA = +25°C - ensures system-level accuracy without post-calibration in mid-precision applications. |
| Tempco (Max) | 25 ppm/°C over 0°C to +70°C - limits output drift to ±1.75 mV across full operating range. |
| Initial Error | ±50 mV - defines worst-case offset before trimming; enables binary-compatible 10.240V setting for 12-bit systems. |
| Input Voltage Range | 13 V to 33 V - supports standard industrial rails including +15V and +24V supplies without external regulators. |
| Quiescent Current | 1.4 mA max - enables low-power operation in battery-backed or energy-constrained monitoring nodes. |
| Load Current | 21 mA max - drives multiple op-amp buffers or successive-approximation ADC references directly. |
| Output Noise | 30 µVP-P (0.1Hz–10Hz) - avoids noise-induced quantization errors in 16-bit+ data acquisition. |
Pinout & Package
REF01HSA+ uses an 8-pin Small Outline (SO) package (S8-2), 3.9mm × 4.9mm body, 1.27mm pitch, with gull-wing leads and lead-free finish. Pin 3 is NC (no connection); pin 6 is TRIM for ±6% output adjustment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Reference Output | Stable 10V source; requires ≤10nF bypass capacitor for noise suppression and transient stability. |
| 2 (GND) | Analog Ground | Return path for reference current and trim network; must be star-connected to minimize ground bounce. |
| 3 (NC) | No Connection | Unbonded die pad; must remain unconnected - not usable as TEMP or auxiliary signal. |
| 4 (VIN) | Positive Supply Input | Accepts 13V–33V DC; internal current limiting protects against overvoltage transients. |
| 5 (TRIM) | Adjustment Terminal | Connects to wiper of 10kΩ potentiometer; adjusts output ±600mV with <0.7ppm/°C tempco shift per 100mV. |
| 6 (N.C.) | No Connection | Unused pin; electrically isolated - no routing or soldering required. |
| 7 (N.C.) | No Connection | Unused pin; electrically isolated - no routing or soldering required. |
| 8 (N.C.) | No Connection | Unused pin; electrically isolated - no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed 10V Output | Guarantees 9.95V–10.05V at +25°C, reducing factory calibration time for test equipment and sensor front-ends. |
| ±6% Output Adjustment | Enables precise system-level trimming to 10.240V for binary-scaled DACs or 10.000V for metrology-grade standards. |
| Short-Circuit Protection | Withstands indefinite output short to GND or VIN without latch-up or parametric shift - critical for field-deployed instruments. |
| Low 1mA Quiescent Current | Minimizes self-heating (<15mW at 15V), preserving thermal stability and enabling use in thermally isolated enclosures. |
| Indefinite Short-Circuit Duration | Eliminates need for external current-limiting resistors in fault-prone industrial I/O modules. |
Applications
| High-Accuracy Data Acquisition | Precision Calibration Standards |
|---|---|
Use Scenario: 16-bit SAR ADC in environmental monitoring node measuring thermocouple and RTD signals. IC Role / Device Role / Timing Role: Primary voltage reference for ADC's internal conversion ladder and external gain-setting op-amps. Use Value: 25ppm/°C tempco ensures <±2 LSB error over 0°C–70°C ambient, meeting IEC 61000-4-30 Class A requirements. | Use Scenario: Portable handheld calibrator verifying multimeters and process transmitters. IC Role / Device Role / Timing Role: Stable 10.000V output source trimmed to ±0.01% using onboard potentiometer and metrology-grade DMM feedback. Use Value: ±50mV initial error allows full-scale adjustment to exact 10.000V; SO package enables compact, vibration-resistant PCB layout. |
| Industrial Analog I/O Modules | Programmable Logic Controller (PLC) Analog Inputs |
Use Scenario: DIN-rail mounted analog input module accepting 0–10V and 4–20mA field signals. IC Role / Device Role / Timing Role: Reference for dual-slope integrator and programmable-gain amplifier stages in isolated signal conditioning path. Use Value: 13V–33V input range matches common 24VDC PLC power rails; 21mA drive capability supports multiple channel buffering. | Use Scenario: Modular PLC backplane with hot-swappable analog input cards requiring long-term stability. IC Role / Device Role / Timing Role: Master reference shared across eight 12-bit ADC channels via low-impedance star distribution. Use Value: Low 30µVP-P noise prevents dithering in low-frequency sensor readings; SO package supports automated SMT assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF01HP+ | Same 10V output, ±50mV initial error, and 25ppm/°C tempco, but in 8-pin Plastic DIP (P8-2) package. | DIP package suits through-hole prototyping and legacy board upgrades; larger footprint and higher thermal resistance limit high-density designs. | Select REF01HP+ only when manual assembly or socket-based testing is required; REF01HSA+ preferred for volume SMT production. |
| MAX6035AESA+ | Lower 5ppm/°C max tempco, 1.8V–5.5V supply, 3ppm/°C typical, but fixed 2.5V output - no trim capability. | Not adjustable; requires external amplification for 10V systems; optimized for low-voltage, battery-powered sensors rather than industrial 10V standards. | Choose MAX6035AESA+ only if ultra-low drift (<±0.35mV over 0°C–70°C) and low supply voltage are mandatory - not a functional replacement for REF01HSA+'s adjustability and 10V output. |
Compared with REF01HP+, REF01HSA+ offers identical electrical performance in a smaller, surface-mount SO package ideal for automated manufacturing. Compared with MAX6035AESA+, REF01HSA+ provides user-adjustable 10V output and higher supply voltage tolerance but trades off ultimate temperature stability for flexibility and industrial rail compatibility.
Availability
REF01HSA+ is available at Aetrix Electronics and suitable for industrial instrumentation, precision calibration equipment, and analog I/O modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for REF01HSA+ 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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The REF01 product line delivers industry-standard +10V precision voltage references with adjustable output, optimized for metrology-grade accuracy, robustness in harsh environments, and compatibility with legacy test and measurement platforms.
FAQ
What is the maximum input voltage rating for REF01HSA+?
The absolute maximum input voltage for REF01HSA+ is 40V. Operation above 33V is not recommended for sustained use, as the device is specified for reliable performance within 13V to 33V. Exceeding 40V risks permanent damage, and the SO package's 300mW power dissipation limit further constrains high-voltage/high-current operation. REF01HSA+ maintains full specification compliance only within its rated 13V–33V input window.
Can REF01HSA+ be used as a 5V reference?
No, REF01HSA+ is a fixed +10V reference IC and cannot be configured for 5V output. The REF02 family (e.g., REF02HSA+) provides +5V output with identical SO packaging and trim capability. Attempting to scale REF01HSA+ down via external resistive dividers degrades accuracy, increases noise sensitivity, and voids temperature coefficient guarantees - REF01HSA+ is designed exclusively for 10V applications.
Does REF01HSA+ have a temperature output pin like REF02?
No, REF01HSA+ does not include a temperature output function. Pin 3 is explicitly designated NC (no connection), unlike REF02HSA+ where pin 3 provides a linear 2.1mV/°C TEMP voltage. This architectural distinction is confirmed in the pin configuration diagram and "General Description" section of the datasheet. REF01HSA+ focuses solely on voltage reference stability, with no integrated temperature transduction capability.
What is the output adjustment range of REF01HSA+ and how is it implemented?
REF01HSA+ supports ±6% output adjustment (±600mV around 10V) using an external 10kΩ potentiometer connected between TRIM (pin 5) and GND (pin 2). The adjustment introduces minimal degradation: tempco shifts by only 0.7ppm/°C per 100mV of deviation. This allows precise system-level calibration to values such as 10.240V for binary-aligned DACs or 10.000V for metrology standards - all while retaining guaranteed stability over 0°C to +70°C.
Is REF01HSA+ pin-compatible with REF01EP+ or REF01HP+?
REF01HSA+ shares identical pin functions with REF01EP+ and REF01HP+, but is not mechanically pin-compatible due to different packages: REF01HSA+ uses 8-pin SO (S8-2), while REF01EP+/HP+ use 8-pin Plastic DIP (P8-2). Signal mapping (VOUT, GND, VIN, TRIM) is preserved, but PCB layout, thermal design, and assembly process differ significantly. No direct drop-in replacement is possible without board revision - the SO package requires reflow-compatible footprints and tighter spacing rules.
REF01HSA+ 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:
- ±0.5%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
REF01HSA+ FAQ
1.How can I place an order for REF01HSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01HSA+ 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 REF01HSA+ reliable?
The price and inventory of REF01HSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01HSA+ is usually 5 days.
3.What payment methods are accepted for REF01HSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01HSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01HSA+?
REF01HSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01HSA+ 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 REF01HSA+?
For technical support, including REF01HSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01HSA+ requirements.
6.How does Aetrix verify that REF01HSA+ is sourced from the original manufacturer or authorized distributors?
All REF01HSA+ 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 REF01HSA+ meets industry standards.
7.What is the process for return or replacement of REF01HSA+?
All REF01HSA+ units undergo pre-shipment inspection (PSI). If there is an issue with REF01HSA+, 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 REF01HSA+ part is unused and in its original packaging.
Return procedure for REF01HSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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