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Analog Devices Inc./Maxim Integrated REF01HSA+T
- Part No.:
- REF01HSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
REF01HSA+T.pdf
- Description:
- IC VREF SERIES 0.5% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,346
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Product details
Overview
REF01HSA+T from Maxim Integrated is a precision +10V voltage reference IC in 8-pin SOIC package, featuring ±50mV initial output error, 25ppm/°C max temperature coefficient over 0°C to +70°C, 10mA max load current, and 1.4mA quiescent supply current. It delivers stable 10V reference for high-accuracy data acquisition systems requiring low-drift calibration sources.
For engineers reviewing the REF01HSA+T datasheet, REF01HSA+T pinout, REF01HSA+T application, or REF01HSA+T equivalent, this device supports trim-adjustable output (±6%), operates from 13V–33V input, offers 20µVP-P (0.1Hz–10Hz) noise, and maintains <0.012%/V line regulation - critical for ADC/DAC reference design, precision instrumentation, and voltage regulator feedback loops.
Technical Context
The REF01HSA+T implements a bandgap-based two-terminal shunt-like reference architecture with internal trimming, enabling precise 10V output without external components. Its trim terminal (Pin 5) allows ±6% adjustment (±600mV), with minimal impact on temperature stability - TCVO shift is only 0.7ppm/°C per 100mV of adjustment.
It operates as a three-terminal series reference: VIN (Pin 6), VOUT (Pin 2), and GND (Pin 4), supporting both sourcing and sinking (0.5mA sink capability). The device includes short-circuit protection and indefinite short-to-ground or VIN tolerance, with thermal derating at 5.0mW/°C above +55°C for its SOIC package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.00V ±50mV at 25°C - ensures absolute accuracy within 0.5% before trimming. |
| Tempco (Max) | 25ppm/°C over 0°C to +70°C - drift ≤0.0175V across full operating range. |
| Initial Error | ±50mV - enables system-level calibration via trim resistor without post-manufacture trimming. |
| Load Current | 10mA max - supports direct driving of op-amp inputs, ADC references, and moderate-current feedback networks. |
| Quiescent Current | 1.4mA max - balances low power consumption with fast turn-on settling (400µs to ±0.1%). |
| Noise (0.1–10Hz) | 20µVP-P - suitable for 16-bit+ SAR and sigma-delta ADCs where reference noise dominates LSB error. |
| Line Regulation | 0.012%/V - holds output stable despite ±2V input variation in unregulated supplies. |
Pinout & Package
REF01HSA+T uses an 8-pin Small Outline (SO) package (S8-2), 3.9mm width, with standard JEDEC MS-012AC footprint. Pin 1 is VOUT, Pin 2 is TRIM, Pin 3 is NC (no connection), Pin 4 is GND, Pin 5 is NC, Pin 6 is VIN, Pin 7 is NC, Pin 8 is NC - confirmed by Maxim's official pin configuration diagram for REF01/REF02 SO variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Reference Output | Stable 10V source; must be decoupled with ≥1µF ceramic capacitor for noise suppression. |
| 2 (TRIM) | Adjustment Terminal | Connects to 10kΩ potentiometer between VOUT and GND to fine-tune output ±6% without degrading tempco. |
| 3 (NC) | No Connection | Internally unconnected; must remain floating - no PCB trace or solder mask violation. |
| 4 (GND) | Ground Reference | Return path for load/sink current; requires low-impedance plane to minimize ground bounce errors. |
| 5 (NC) | No Connection | Unused pin; electrically isolated - no routing or thermal pad connection required. |
| 6 (VIN) | Input Supply | Accepts 13V–33V DC; minimum headroom = 3V for regulation; bypass with 0.1µF near pin. |
| 7 (NC) | No Connection | Not bonded; leave unconnected and unmasked per Maxim layout guidelines. |
| 8 (NC) | No Connection | Non-functional; avoid routing or grounding to prevent parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed 10V Output | Guaranteed 9.95V–10.05V at 25°C eliminates need for factory calibration in production test. |
| Trim-Adjustable Range | ±6% (±600mV) via external potentiometer - enables binary-aligned outputs (e.g., 10.240V) for digital systems. |
| Short-Circuit Protection | Indefinite short-to-GND or VIN tolerance - prevents latch-up or damage during board bring-up or fault conditions. |
| Low Wideband Noise | 20µVP-P (0.1Hz–10Hz) - avoids adding measurable error in high-resolution measurement front-ends. |
| Thermal Derating Control | 300mW max dissipation with 5.0mW/°C derating above +55°C - enables safe operation in compact industrial enclosures. |
Applications
| High-Accuracy Data Acquisition | Precision Calibration Equipment |
|---|---|
Use Scenario: 18-bit SAR ADC in portable multimeter measuring 0–10V signals with ±0.01% total error budget. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion core, providing stable scaling factor independent of supply fluctuations. Use Value: 25ppm/°C tempco ensures <0.00175V drift over 0–70°C ambient, meeting EN61010 Class II accuracy requirements. | Use Scenario: Benchtop calibration standard generating traceable 10.000V output for field instrument verification. IC Role / Device Role / Timing Role: Fixed-output reference source with trim-adjustable capability for NIST-traceable offset correction. Use Value: ±50mV initial error + ±6% trim range allows final adjustment to exact 10.000V under lab conditions, eliminating need for laser trimming. |
| Industrial Voltage Regulator Feedback | Battery-Operated Instrumentation |
Use Scenario: Programmable 10V output linear regulator powering analog sensor signal chains in PLC I/O modules. IC Role / Device Role / Timing Role: Precision feedback node for error amplifier controlling pass transistor gate drive. Use Value: 0.012%/V line regulation ensures <1.2mV output change per volt of input variation - critical for unregulated 24V rail applications. | Use Scenario: Handheld gas analyzer using low-power microcontroller and electrochemical sensors requiring stable bias references. IC Role / Device Role / Timing Role: Low-quiescent-current (1.4mA) reference supplying ADC and analog front-end without draining Li-ion battery. Use Value: 1.4mA ISY enables >100-hour runtime on 140mAh coin cell while maintaining 10V accuracy for sensor excitation and digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF01CSA+ | 65ppm/°C max tempco vs. 25ppm/°C; ±100mV initial error vs. ±50mV; same SO-8 package and pinout. | Lower accuracy grade - suitable for cost-sensitive industrial controls but not metrology-grade instruments. | Select REF01CSA+ only when tempco and initial error budgets allow ≥2× degradation versus REF01HSA+T. |
| MAX6143ASA+ | 10ppm/°C max tempco; ±2mV initial error; 3.3V/5V/10V variants; SO-8; requires external decoupling cap. | Higher performance and tighter tolerances - targets new designs needing improved long-term stability and lower noise. | Choose MAX6143ASA+ for next-generation designs where REF01HSA+T's aging and drift specs fall short of spec limits. |
Compared with REF01CSA+, REF01HSA+T provides half the tempco and half the initial error - directly improving system gain stability and reducing calibration frequency. Against MAX6143ASA+, it trades higher drift and noise for proven legacy reliability and simpler layout (no mandatory external capacitor).
Availability
REF01HSA+T is available at Aetrix Electronics and suitable for high-accuracy data acquisition, precision calibration equipment, and industrial voltage regulator feedback applications requiring stable component supply and long-term parametric consistency.
Supply support for REF01HSA+T 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications systems.
The REF01 product line delivers industry-standard +10V precision voltage references designed for metrology-grade instrumentation, calibration standards, and high-resolution data converters where long-term stability and low thermal drift are essential.
FAQ
What is the maximum input voltage rating for REF01HSA+T?
The REF01HSA+T has an absolute maximum input voltage rating of 40V, as specified in Maxim's official datasheet Absolute Maximum Ratings table. Operation above 33V is not recommended for reliable regulation, and sustained input above 40V may cause permanent damage. For continuous operation, keep VIN between 13V and 33V to ensure proper regulation and thermal safety within its 300mW SOIC power limit.
Can REF01HSA+T be used as a 5V reference?
No, REF01HSA+T is a fixed +10V reference IC and cannot be configured for 5V output. The REF02 family (e.g., REF02HSA+) provides the +5V variant with identical SO-8 packaging and trim functionality. Attempting to adjust REF01HSA+T below ~9.4V risks violating its internal bandgap operating point and degrading tempco and noise performance.
Does REF01HSA+T have a temperature output pin like REF02?
No, REF01HSA+T does not include a temperature transducer output. Pin 3 is explicitly marked "NC" (no connection) in all REF01 variants, including REF01HSA+T. Only REF02 devices feature the TEMP pin (Pin 3) with 2.1mV/°C output. Using REF01HSA+T for temperature sensing requires an external sensor and signal conditioning circuitry.
What is the recommended decoupling for REF01HSA+T?
Maxim recommends a minimum 0.1µF ceramic capacitor placed as close as possible to the VIN pin (Pin 6) and a ≥1µF ceramic capacitor at the VOUT pin (Pin 1) to suppress high-frequency noise and improve transient response. These values are validated in the Typical Operating Characteristics section and Figure 2–5 application circuits. Omitting the VOUT capacitor increases output noise and may destabilize feedback loops in precision op-amp configurations.
Is REF01HSA+T RoHS-compliant and lead-free?
Yes, REF01HSA+T is RoHS-compliant and lead-free, as indicated by the "+" suffix in its ordering code per Maxim's standard nomenclature. The "+" denotes a lead-free, halogen-free package conforming to JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) and reflow profile requirements. Full compliance documentation is available in Maxim's official packaging and environmental reports.
REF01HSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- 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:
- 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+T FAQ
1.How can I place an order for REF01HSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for REF01HSA+T 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+T reliable?
The price and inventory of REF01HSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REF01HSA+T is usually 5 days.
3.What payment methods are accepted for REF01HSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REF01HSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REF01HSA+T?
REF01HSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REF01HSA+T 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+T?
For technical support, including REF01HSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REF01HSA+T requirements.
6.How does Aetrix verify that REF01HSA+T is sourced from the original manufacturer or authorized distributors?
All REF01HSA+T 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+T meets industry standards.
7.What is the process for return or replacement of REF01HSA+T?
All REF01HSA+T units undergo pre-shipment inspection (PSI). If there is an issue with REF01HSA+T, 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+T part is unused and in its original packaging.
Return procedure for REF01HSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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