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Analog Devices Inc./Maxim Integrated MAX674ESA+
- Part No.:
- MAX674ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX674ESA+.pdf
- Description:
- IC VREF SERIES 0.15% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:269
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Product details
Overview
The MAX674ESA+ from Maxim Integrated is a precision +10V voltage reference IC with ±0.15% initial accuracy, 15ppm/°C temperature coefficient, and 20µVP-P (0.1Hz–10Hz) low-frequency noise, designed for high-accuracy analog signal conditioning in industrial data acquisition systems.
For engineers reviewing the MAX674ESA+ datasheet, MAX674ESA+ pinout, MAX674ESA+ application, or MAX674ESA+ equivalent, key selection criteria include guaranteed 15ppm/°C tempco over –40°C to +85°C, ±300mV output trim range, load regulation of 0.001%/mA, and narrow SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX674ESA+ uses a bandgap-based reference core with on-chip trimming to achieve ±15mV (±0.15%) initial output tolerance at +10.000V. Its temperature stability is specified using the "box method" per Note 1, with guaranteed 15ppm/°C max over the full –40°C to +85°C operating range.
It features short-circuit protection to ground or VIN, supports up to 10mA load current with <0.002%/mA load regulation, and achieves 5µs turn-on settling time to ±0.1% - enabling use in fast-settling ADC/DAC biasing and calibration circuits without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +10.000V ±15mV (±0.15%) at TA = +25°C, IL = 0mA |
| Tempco | 15ppm/°C max (–40°C to +85°C), measured by box method |
| Noise (0.1Hz–10Hz) | 20µVP-P typical, critical for 16-bit+ ADC reference stability |
| Load Regulation | 0.001%/mA max, ensures <10µV shift per mA load change |
| Quiescent Current | 750µA to 1400µA, enables low-power precision sensing nodes |
| Trim Range | ±300mV via TRIM pin with 10kΩ pot, supports binary-aligned outputs (e.g., 10.240V) |
| Turn-On Settling | 5µs to ±0.1%, allows synchronization with high-speed sampling clocks |
Pinout & Package
MAX674ESA+ is housed in an 8-pin narrow SO (SOIC-8) surface-mount package with standard 1.27mm pitch and 3.9mm × 4.9mm body dimensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection; must be left unconnected or grounded per layout best practice |
| 2 | VIN | Positive input supply (4V to 40V); requires local 0.1µF bypass capacitor |
| 3 | NC | No internal connection; electrically isolated from die |
| 4 | GND | Analog ground reference; star-point connection recommended for noise-sensitive designs |
| 5 | TRIM | Adjustment terminal for ±300mV output offset; connects to center tap of 10kΩ potentiometer |
| 6 | VOUT | Stable +10V reference output; capable of sourcing up to 10mA with <0.002%/mA regulation |
| 7 | NC | No internal connection; no routing or thermal pad required |
| 8 | NC | No internal connection; not bonded; avoid solder bridging |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed +10V output | ±15mV (±0.15%) initial accuracy eliminates need for system-level calibration potentiometers |
| Low 0.1Hz–10Hz noise | 20µVP-P enables stable reference for 16-bit SAR and sigma-delta ADCs without post-filtering |
| Adjustable output range | ±300mV trim capability supports custom reference voltages (e.g., 10.240V for 10-bit binary scaling) |
| Short-circuit protected | Indefinite short-to-ground or short-to-VIN survival enables robust operation in fault-prone industrial interfaces |
| Guaranteed tempco | 15ppm/°C max over –40°C to +85°C ensures ≤1.5mV drift across full industrial temperature range |
Applications
| High-Accuracy Data Acquisition | Digital Voltmeter Front-End |
|---|---|
Use Scenario: 16-bit simultaneous-sampling ADC module in programmable logic controller (PLC) analog input card. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion core and sensor excitation circuitry. Use Value: ±15mV initial error and 15ppm/°C tempco ensure <0.01% total unadjusted error over temperature without recalibration. | Use Scenario: Portable handheld DVM with autoranging and 5½-digit resolution. IC Role / Device Role / Timing Role: Stable 10.000V reference for dual-slope integrator and auto-zero amplifier stages. Use Value: 20µVP-P low-frequency noise prevents digit flicker and improves effective resolution beyond 5½ digits. |
| Industrial Voltage Regulator Feedback | Precision Calibration Standard |
Use Scenario: Programmable 0–24V industrial power supply with remote sense and digital setpoint control. IC Role / Device Role / Timing Role: Precision reference for error amplifier in isolated feedback loop. Use Value: 0.001%/mA load regulation maintains <10µV output shift despite varying optocoupler LED current in feedback path. | Use Scenario: Benchtop calibration source traceable to NIST standards for field instrument verification. IC Role / Device Role / Timing Role: Core reference element in 10.000V ±0.5ppm/year aging-stable calibration chain. Use Value: ±300mV trim range enables precise alignment to metrology-grade 10.000V targets without external gain stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF01CSZ | ±0.3% initial accuracy, 25ppm/°C tempco, 1.5mA quiescent current | Lower accuracy and higher drift limit use in <14-bit systems; wider SO-8 footprint | Cost-sensitive legacy designs where ±0.3% tolerance is acceptable |
| ADR441BRZ | +10.000V output, ±0.04% initial accuracy, 3ppm/°C tempco, 4.5mA IQ | Higher performance, higher power, and higher cost; requires larger thermal pad layout | New high-end instrumentation requiring sub-ppm/°C stability and lower long-term drift |
Compared with REF01CSZ and ADR441BRZ, the MAX674ESA+ delivers optimal balance of industrial-grade accuracy (±0.15%), moderate power (1.4mA max), and proven reliability in narrow SO-8 - making it ideal for cost-constrained yet thermally demanding PLC and test equipment designs.
Availability
MAX674ESA+ is available at Aetrix Electronics and suitable for industrial data acquisition, portable digital multimeters, programmable voltage regulators, and precision calibration standards requiring stable component supply across extended temperature ranges.
Supply support for MAX674ESA+ 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX674ESA+ belongs to Maxim's precision voltage reference product line, engineered specifically for high-stability, low-noise, and trimmable +10V references in harsh-temperature industrial environments.
FAQ
What is the guaranteed temperature coefficient of the MAX674ESA+ over its full operating range?
The MAX674ESA+ has a guaranteed maximum temperature coefficient of 15ppm/°C over the –40°C to +85°C operating temperature range, measured using the "box method" as defined in the datasheet. This specification ensures predictable output drift under thermal stress in industrial control cabinets and outdoor instrumentation enclosures where ambient temperatures fluctuate widely. The MAX674ESA+ meets this spec across all units in production lot testing, not just sample characterization.
Can the MAX674ESA+ be used as a direct replacement for the REF01 in existing designs?
Yes, the MAX674ESA+ is pin-for-pin compatible with the REF01 and shares identical SO-8 pinout and basic functional behavior. However, the MAX674ESA+ offers tighter initial accuracy (±0.15% vs. ±0.3%) and lower tempco (15ppm/°C vs. 25ppm/°C), so existing REF01 designs will see improved absolute accuracy without layout changes. The MAX674ESA+ also draws less quiescent current (1.4mA max vs. 1.5mA), reducing thermal load in dense PCB assemblies.
What is the maximum load current the MAX674ESA+ can drive while maintaining specified load regulation?
The MAX674ESA+ maintains its specified load regulation of 0.001%/mA up to 10mA output current, as confirmed in the Electrical Characteristics table. At 10mA, the output voltage shift remains within ±10µV - well within the ±15mV initial tolerance band. Beyond 10mA, regulation degrades nonlinearly, and short-circuit protection activates if VOUT is pulled below ~1V or above VIN.
Does the MAX674ESA+ require external capacitors for stability, and if so, what values are recommended?
The MAX674ESA+ does not require external output capacitors for stability but benefits from a 0.1µF ceramic capacitor placed as close as possible to the VIN pin (Pin 2) and GND (Pin 4). This minimizes high-frequency supply noise coupling into the reference core. No output capacitor is needed or recommended, as the device is internally compensated and adding capacitance may degrade transient response or induce oscillation in certain PCB layouts.
How is the TRIM pin used to adjust the output voltage of the MAX674ESA+, and what is the safe adjustment range?
The TRIM pin (Pin 5) of the MAX674ESA+ accepts a resistive divider to adjust the output voltage over a ±300mV range around 10.000V - i.e., from 9.700V to 10.300V. A 10kΩ potentiometer wired between VOUT and GND, with wiper to TRIM, provides full-range adjustment. Adjustment does not degrade tempco significantly: each 100mV shift adds only ~0.7ppm/°C to the baseline 15ppm/°C coefficient. Leaving TRIM open yields nominal +10.000V output.
MAX674ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX674ESA+ FAQ
1.How can I place an order for MAX674ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX674ESA+ 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 MAX674ESA+ reliable?
The price and inventory of MAX674ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX674ESA+ is usually 5 days.
3.What payment methods are accepted for MAX674ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX674ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX674ESA+?
MAX674ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX674ESA+ 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 MAX674ESA+?
For technical support, including MAX674ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX674ESA+ requirements.
6.How does Aetrix verify that MAX674ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX674ESA+ 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 MAX674ESA+ meets industry standards.
7.What is the process for return or replacement of MAX674ESA+?
All MAX674ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX674ESA+, 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 MAX674ESA+ part is unused and in its original packaging.
Return procedure for MAX674ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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