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Analog Devices Inc./Maxim Integrated MAX674MSA/PR
- Part No.:
- MAX674MSA/PR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX674MSA/PR.pdf
- Description:
- +10V PRECISION VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:430
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Product details
Overview
MAX674MSA/PR from Maxim Integrated is a precision +10V voltage reference IC with ±0.15% initial accuracy, 20ppm/°C temperature coefficient (guaranteed over –55°C to +125°C), and 20µVP-P low-frequency noise (0.1Hz–10Hz). It delivers 1.4mA max supply current, 0.001%/mA load regulation, and operates from 13V to 33V input. Used in high-accuracy calibration standards and precision ADC/DAC biasing.
For engineers reviewing the MAX674MSA/PR datasheet, MAX674MSA/PR pinout, MAX674MSA/PR application, or MAX674MSA/PR equivalent, key selection criteria include guaranteed wide-temperature performance (–55°C to +125°C), trim-adjustable output (±300mV), short-circuit protection, and narrow SO package compatibility with REF01 footprint.
Technical Context
The MAX674MSA/PR is a monolithic bandgap-based voltage reference with internal trimming for fixed +10V output. Its architecture supports output adjustment via external resistor at the TRIM pin without degrading temperature stability beyond +0.7ppm/°C per 100mV shift.
It features built-in short-circuit protection, sink capability up to 0.5mA, and turn-on settling time of 5µs to ±0.1%. Line regulation is 0.01%/V (13V–33V), and thermal shock response is characterized to <0.03% output change during rapid immersion in +75°C oil bath.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +10.000V ±15mV (±0.15% initial accuracy at TA = +25°C) |
| Tempco | 20ppm/°C max (guaranteed over –55°C to +125°C, box method) |
| Noise (0.1Hz–10Hz) | 20µVP-P (enables sub-16-bit system resolution without external filtering) |
| Supply Current | 750µA to 1400µA (low quiescent draw supports battery-backed precision systems) |
| Load Regulation | 0.001%/mA (maintains <10µV/mA error across 0–10mA load range) |
| Input Voltage Range | 13V to 33V (supports wide-input industrial power rails) |
| Trim Range | ±300mV (allows binary-aligned outputs like 10.240V for 10-bit DAC full-scale) |
Pinout & Package
MAX674MSA/PR is supplied in an 8-pin narrow SO (SOIC) package, 150-mil width, RoHS-compliant, with standard JEDEC MO-153 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Stable +10V reference output; low-impedance source capable of sourcing up to 10mA |
| 2 | TRIM | Adjustment node; connects to external potentiometer for ±300mV output tuning |
| 3 | GND | Analog ground reference; must be connected to clean system ground plane |
| 4 | N.C. | No connection; internally unconnected; leave floating or tie to GND per layout best practice |
| 5 | N.C. | No connection; internally unconnected; leave floating or tie to GND per layout best practice |
| 6 | VIN | Positive input supply; requires ≥13V, ≤33V; decoupling capacitor recommended |
| 7 | N.C. | No connection; internally unconnected; leave floating or tie to GND per layout best practice |
| 8 | N.C. | No connection; internally unconnected; leave floating or tie to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed +10V output | ±0.15% initial accuracy eliminates need for system-level calibration potentiometers |
| Wide-temperature operation | Specified from –55°C to +125°C with 20ppm/°C max drift enables aerospace and military applications |
| Low 0.1Hz–10Hz noise | 20µVP-P supports high-resolution data acquisition without added filtering stages |
| Short-circuit protected | Indefinite output short to GND or VIN prevents latch-up or permanent damage during fault conditions |
| REF01 pin-compatible | Direct drop-in replacement for legacy REF01 designs without PCB modification |
Applications
| Precision Calibration Standard | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Benchtop calibration of multimeters and DMMs requiring traceable 10.000V reference. IC Role / Device Role / Timing Role: Primary voltage reference source for 7½-digit digital voltmeter front-end. Use Value: ±15mV initial error and 20ppm/°C tempco ensure <10ppm total uncertainty over lab temperature range. | Use Scenario: Biasing reference input of 24-bit delta-sigma ADC in seismic sensor interface. IC Role / Device Role / Timing Role: Low-noise analog reference for ADC conversion accuracy and linearity. Use Value: 20µVP-P noise floor avoids degradation of effective number of bits (ENOB) below 22 bits. |
| Binary-Scale DAC Reference | Industrial Temperature Sensor Signal Chain |
Use Scenario: Setting full-scale voltage of 10-bit DAC used in programmable gain amplifier control. IC Role / Device Role / Timing Role: Adjustable reference enabling exact 10.240V output for binary-aligned scaling. Use Value: ±300mV trim range allows precise alignment to 210 × 10mV steps without external op-amp circuitry. | Use Scenario: Reference for RTD-to-digital converter in turbine engine monitoring module. IC Role / Device Role / Timing Role: Stable excitation and measurement reference under –55°C to +125°C ambient. Use Value: Guaranteed 20ppm/°C tempco ensures <±0.025% reference drift across full operating 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 |
|---|---|---|---|
| REF01CPZ | Fixed +10V, ±0.3% initial accuracy, 25ppm/°C tempco, 8-pin PDIP/SO | Lower accuracy and wider tempco; not rated for >+85°C | Acceptable for commercial-grade 12-bit systems where cost is primary constraint |
| ADR441BRZ | +10.000V, ±0.04% initial accuracy, 3ppm/°C tempco, 8-pin SOIC, 1.8mA IQ | Higher precision, lower noise (1.8µVP-P), but higher supply current and cost | Preferred for metrology-grade 24-bit systems where long-term stability outweighs power budget |
Compared with REF01CPZ and ADR441BRZ, the MAX674MSA/PR uniquely balances military-grade temperature range (–55°C to +125°C), moderate power (1.4mA), and REF01 pin compatibility-making it optimal for ruggedized embedded instrumentation where legacy footprint retention and extended thermal margin are mandatory.
Availability
MAX674MSA/PR is available at Aetrix Electronics and suitable for precision calibration standards, high-resolution data acquisition, binary-scale DAC reference, and industrial temperature sensor signal chains requiring stable component supply across extended temperature ranges.
Supply support for MAX674MSA/PR 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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX674 series was developed specifically for high-stability, wide-temperature voltage reference applications in test equipment, avionics, and precision instrumentation where long-term drift and thermal hysteresis must be minimized.
FAQ
What is the operating temperature range specified for the MAX674MSA/PR?
The MAX674MSA/PR is rated for operation from –55°C to +125°C. This extended temperature grade is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official MAX674 datasheet. The device maintains its 20ppm/°C maximum temperature coefficient and ±15mV initial output tolerance across this full range, making it suitable for aerospace, defense, and downhole industrial applications where ambient extremes are expected. All electrical characteristics for the M-grade are tested per MIL-STD-883 methods.
Does the MAX674MSA/PR require external components to function as a basic +10V reference?
No, the MAX674MSA/PR operates as a complete +10V reference with only a bypass capacitor on VIN. A 0.1µF ceramic capacitor placed between VIN and GND is recommended for stability and noise suppression. The TRIM pin may be left open if no output adjustment is needed; no pull-up/down resistors or feedback networks are required for nominal operation. External components become necessary only when using the trim feature (e.g., 10kΩ potentiometer between VOUT and TRIM) or driving heavy loads (>10mA) requiring output buffering.
Is the MAX674MSA/PR pin-compatible with the REF01 series?
Yes, the MAX674MSA/PR is explicitly stated as pin-for-pin compatible with the REF01 in the Features section of the datasheet. Both devices use identical 8-pin SO and PDIP footprints, with matching pin assignments for VOUT, TRIM, GND, and VIN. This compatibility allows direct replacement in existing REF01-based designs without PCB revision. However, note that MAX674MSA/PR offers tighter initial accuracy (±0.15% vs. ±0.3%) and superior temperature stability (20ppm/°C vs. 25ppm/°C), delivering measurable performance uplift in upgraded systems.
What is the maximum load current the MAX674MSA/PR can drive directly?
The MAX674MSA/PR is specified to deliver up to 10mA load current while maintaining its published load regulation of 0.001%/mA. The Typical Operating Characteristics graph "MAXIMUM LOAD CURRENT vs. INPUT VOLTAGE" confirms stable operation up to 10mA at VIN = 15V. Beyond 10mA, output voltage deviation increases nonlinearly, and self-heating effects degrade temperature coefficient performance. For loads exceeding 10mA, a unity-gain buffer amplifier (e.g., rail-to-rail op-amp) is recommended to preserve reference accuracy and stability.
How does the TRIM pin affect temperature coefficient in the MAX674MSA/PR?
Adjusting the output voltage via the TRIM pin changes the MAX674MSA/PR's temperature coefficient by approximately +0.7ppm/°C per 100mV of deviation from the nominal +10.000V output. For example, setting VOUT = 10.200V increases the tempco by ~1.4ppm/°C. This incremental shift is linear and predictable, allowing system designers to quantify total drift budget when using trimmed outputs. The base 20ppm/°C spec remains valid for the unadjusted device, and all tempco values are guaranteed over the full –55°C to +125°C range regardless of trim setting.
MAX674MSA/PR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX674MSA/PR FAQ
1.How can I place an order for MAX674MSA/PR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX674MSA/PR 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 MAX674MSA/PR reliable?
The price and inventory of MAX674MSA/PR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX674MSA/PR is usually 5 days.
3.What payment methods are accepted for MAX674MSA/PR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX674MSA/PR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX674MSA/PR?
MAX674MSA/PR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX674MSA/PR 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 MAX674MSA/PR?
For technical support, including MAX674MSA/PR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX674MSA/PR requirements.
6.How does Aetrix verify that MAX674MSA/PR is sourced from the original manufacturer or authorized distributors?
All MAX674MSA/PR 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 MAX674MSA/PR meets industry standards.
7.What is the process for return or replacement of MAX674MSA/PR?
All MAX674MSA/PR units undergo pre-shipment inspection (PSI). If there is an issue with MAX674MSA/PR, 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 MAX674MSA/PR part is unused and in its original packaging.
Return procedure for MAX674MSA/PR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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