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Analog Devices Inc./Maxim Integrated MAX674EPA+
- Part No.:
- MAX674EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX674EPA+.pdf
- Description:
- IC VREF SERIES 0.15% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,304
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Product details
Overview
The MAX674EPA+ from Maxim Integrated is a precision +10V voltage reference IC with ±15mV initial output tolerance, 15ppm/°C temperature coefficient, and 20µVP-P (0.1Hz–10Hz) low-frequency noise, designed for high-accuracy analog signal conditioning in industrial instrumentation and data acquisition systems.
For engineers reviewing the MAX674EPA+ datasheet, MAX674EPA+ pinout, MAX674EPA+ application, or MAX674EPA+ equivalent, key selection criteria include guaranteed -40°C to +85°C operation, load regulation of 0.001%/mA, short-circuit protection, and compatibility with REF01-based designs requiring stable 10V references.
Technical Context
The MAX674EPA+ uses a bandgap-derived architecture with internal trimming to achieve ±0.15% initial accuracy at +10V. Its temperature stability is characterized using the "box method" per Note 1, guaranteeing ≤15ppm/°C over the full -40°C to +85°C range.
It supports adjustable output via the TRIM pin (±300mV range with 10kΩ pot), maintains 5µs turn-on settling to ±0.1%, and delivers up to 30mA short-circuit current while limiting power dissipation to 500mW in the plastic DIP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +10V ±15mV (±0.15% initial accuracy at TA = +25°C) |
| Tempco | 15ppm/°C max (guaranteed over -40°C to +85°C, box-method measurement) |
| Noise (0.1–10Hz) | 20µVP-P (enables sub-16-bit ADC reference stability) |
| Load Regulation | 0.001%/mA (output drift <10µV per mA load change) |
| Quiescent Current | 750–1400µA (low power draw enables battery-backed precision systems) |
| Turn-On Settling | 5µs to ±0.1% (supports fast-sampling multichannel DAQ timing) |
| Short-Circuit Current | 30mA (robust fault protection without external current limiting) |
Pinout & Package
MAX674EPA+ is housed in an 8-pin plastic DIP (PDIP) package with 0.3-inch width, standard through-hole mounting, and JEDEC MS-001AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - electrically isolated, must be left floating |
| 2 | VIN | Positive input supply (4V to 40V); powers internal reference circuitry |
| 3 | NC | No connection - electrically isolated, must be left floating |
| 4 | GND | Analog ground reference; return path for quiescent and load current |
| 5 | TRIM | Output adjustment terminal; ±300mV trim range with external 10kΩ potentiometer |
| 6 | VOUT | +10V precision reference output; capable of sourcing up to 10mA load current |
| 7 | NC | No connection - electrically isolated, must be left floating |
| 8 | NC | No connection - electrically isolated, must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed +10V output | ±15mV initial error eliminates need for system-level calibration potentiometers |
| Low 0.1–10Hz noise | 20µVP-P ensures <1 LSB error in 16-bit ADC applications with 10V full-scale |
| Adjustable output via TRIM pin | ±300mV range supports binary-aligned references (e.g., 10.240V) without external op-amps |
| Short-circuit protected output | Indefinite short-to-ground or VIN survival enables robust field-deployed instrumentation |
| Guaranteed industrial temp range | -40°C to +85°C operation validated across all electrical specs per datasheet Table 1 |
Applications
| High-Accuracy Data Acquisition | Digital Voltmeter Front-End |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels in environmental monitoring systems requiring traceable voltage reference stability. IC Role / Device Role / Timing Role: Primary 10V reference for SAR ADCs and multiplexed analog front-ends. Use Value: 15ppm/°C tempco and 20µVP-P noise ensure <±0.01% measurement drift over temperature and time. | Use Scenario: Portable handheld DVMs where battery life and measurement repeatability are critical. IC Role / Device Role / Timing Role: Stable excitation source for ratiometric measurements and auto-zero calibration cycles. Use Value: 750–1400µA quiescent current extends battery runtime; ±15mV initial tolerance enables factory calibration without post-assembly trimming. |
| Industrial Voltage Regulator Feedback | Threshold Detector Reference |
Use Scenario: Programmable DC power supplies with remote sensing and 0.1% output accuracy requirements. IC Role / Device Role / Timing Role: Precision feedback reference for error amplifiers in linear and switching regulator control loops. Use Value: 0.001%/mA load regulation prevents output voltage shift during dynamic load transients. | Use Scenario: Overvoltage/undervoltage lockout circuits in PLC I/O modules operating across wide ambient temperatures. IC Role / Device Role / Timing Role: Stable threshold reference for comparator inputs detecting supply rail deviations. Use Value: Guaranteed -40°C to +85°C performance ensures consistent trip points without thermal hysteresis 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 |
|---|---|---|---|
| REF01CP | Same pinout, ±0.1% initial accuracy (tighter), 25ppm/°C tempco (worse), 1.8mA IQ (higher) | Higher initial accuracy but reduced temperature stability; less suitable for wide-temp industrial use | Select REF01CP only if initial accuracy dominates over thermal drift in your design |
| MAX6126AASA+ | SO-8 package only, ±0.04% initial accuracy, 3ppm/°C tempco, 1.2mA IQ, no TRIM pin | Superior stability and accuracy but lacks output adjustability and PDIP packaging | Choose MAX6126AASA+ when upgrading to surface-mount and highest stability is required |
Compared with REF01CP and MAX6126AASA+, the MAX674EPA+ uniquely balances industrial temperature range, TRIM adjustability, PDIP availability, and proven reliability in legacy instrumentation-making it optimal for drop-in replacement or new designs needing field-trimmable 10V references.
Availability
MAX674EPA+ is available at Aetrix Electronics and suitable for high-accuracy data acquisition, digital voltmeter front-ends, and industrial voltage regulator feedback requiring stable component supply across extended temperature ranges.
Supply support for MAX674EPA+ 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX674EPA+ belongs to Maxim's precision voltage reference product line, engineered specifically for applications demanding stable, low-noise, and temperature-resilient 10V references in harsh environments.
FAQ
What is the operating temperature range of the MAX674EPA+?
The MAX674EPA+ is rated for continuous operation from -40°C to +85°C. This extended industrial temperature range is fully guaranteed across all key specifications-including output voltage tolerance, temperature coefficient, and load regulation-as documented in the Maxim datasheet Absolute Maximum Ratings and Electrical Characteristics tables.
Does the MAX674EPA+ require external components to function?
The MAX674EPA+ operates as a complete 10V reference with only VIN and GND connections. An external 10kΩ potentiometer is optional-used only if output adjustment via the TRIM pin is needed. No capacitors, resistors, or op-amps are required for basic operation, simplifying layout and reducing bill-of-materials cost.
Is the MAX674EPA+ pin-compatible with the REF01 series?
Yes, the MAX674EPA+ is explicitly stated in its datasheet as pin-for-pin compatible with REF01. Both devices share identical 8-pin DIP pinouts (VIN, GND, VOUT, TRIM, and NC pins in matching positions), enabling direct substitution in existing REF01-based PCB layouts without modification.
What is the maximum load current supported by the MAX674EPA+?
The MAX674EPA+ can source up to 10mA under normal operating conditions while maintaining specified accuracy. Its short-circuit current is rated at 30mA, and the device remains functional indefinitely during output shorts to ground or VIN-providing inherent fault resilience without external current-limiting circuitry.
Can the output voltage of the MAX674EPA+ be adjusted, and how?
Yes, the MAX674EPA+ output can be adjusted over a ±300mV range (9.7V to 10.3V) using the TRIM pin with an external 10kΩ potentiometer connected between VOUT and GND. The datasheet confirms that this adjustment does not significantly degrade temperature performance-adding only ~0.7ppm/°C per 100mV of offset.
MAX674EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 15ppm/°C
- Noise - 0.1Hz to 10Hz:
- 20µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 13V ~ 33V
- Current - Supply:
- 1.4mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX674EPA+ FAQ
1.How can I place an order for MAX674EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX674EPA+ 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 MAX674EPA+ reliable?
The price and inventory of MAX674EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX674EPA+ is usually 5 days.
3.What payment methods are accepted for MAX674EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX674EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX674EPA+?
MAX674EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX674EPA+ 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 MAX674EPA+?
For technical support, including MAX674EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX674EPA+ requirements.
6.How does Aetrix verify that MAX674EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX674EPA+ 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 MAX674EPA+ meets industry standards.
7.What is the process for return or replacement of MAX674EPA+?
All MAX674EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX674EPA+, 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 MAX674EPA+ part is unused and in its original packaging.
Return procedure for MAX674EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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