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Analog Devices Inc./Maxim Integrated MAX674CSA
- Part No.:
- MAX674CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX674CSA.pdf
- Description:
- MAX674 - THREE TERMINAL VOLTAGE
- Quantity:
- Payment:
- Shipping:
Inventory:2,012
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Product details
Overview
MAX674CSA from Maxim Integrated is a precision +10V voltage reference IC with ±0.15% initial accuracy, 12ppm/°C temperature coefficient, and 20µVP-P low-frequency noise, housed in an 8-pin narrow SO package. It delivers stable reference voltage for high-resolution data conversion and calibration circuits operating from 0°C to +70°C.
For engineers reviewing the MAX674CSA datasheet, MAX674CSA pinout, MAX674CSA application, or MAX674CSA equivalent, key selection criteria include guaranteed 12ppm/°C tempco, ±15mV initial error, 1.4mA max supply current, load regulation of 0.001%/mA, and pin-for-pin compatibility with REF01 in narrow SO footprint.
Technical Context
The MAX674CSA uses a bandgap-based architecture with internal laser-trimmed resistors to achieve its pretrimmed +10V output and low temperature drift. Its trim terminal enables ±300mV adjustment without degrading tempco by more than 0.7ppm/°C per 100mV shift.
It features short-circuit protection, operates from 13V to 33V input, settles within 5µs to ±0.1%, and maintains output stability under thermal shock (e.g., immersion in +75°C oil bath), making it suitable for metrology-grade calibration systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +10V ±15mV (±0.15% initial accuracy at 25°C) |
| Tempco | 12ppm/°C (guaranteed over 0°C to +70°C, box-method measurement) |
| Noise | 20µVP-P (0.1Hz–10Hz bandwidth, critical for 16+ bit ADC/DAC references) |
| Supply Current | 750–1400µA (low quiescent draw enables battery-powered precision instruments) |
| Load Regulation | 0.001%/mA (output shifts only 100µV per mA load change) |
| Line Regulation | 0.006–0.01%/V (stable output across 13V–33V input range) |
| Settling Time | 5µs to ±0.1% (fast turn-on supports burst-mode measurement systems) |
Pinout & Package
MAX674CSA is supplied in an 8-pin narrow SOIC package (package code S8-4*, 0.150" wide, JEDEC MS-012AC). Pinout is identical to REF01 and standard 8-pin SO voltage references.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Stable +10V reference output; drives high-impedance loads up to 10mA |
| 2 | TRIM | Adjustment node for ±300mV fine-tuning via external resistor divider |
| 3 | GND | Analog ground reference; must be low-impedance and separated from digital ground |
| 4 | N.C. | No connection; internally unconnected; leave floating |
| 5 | N.C. | No connection; internally unconnected; leave floating |
| 6 | VIN | Positive input supply (13V–33V); includes internal short-circuit protection |
| 7 | N.C. | No connection; internally unconnected; leave floating |
| 8 | N.C. | No connection; internally unconnected; leave floating |
Key Features
| Feature | Design Value |
|---|---|
| Pretrimmed Output | +10V ±15mV (eliminates system-level trimming for most 10V applications) |
| Low Thermal Drift | 12ppm/°C (enables <0.1% full-scale error over 0°C–70°C industrial range) |
| Ultra-Low Noise | 20µVP-P (0.1Hz–10Hz) - supports 18-bit+ resolution without external filtering |
| Trim Terminal | ±300mV adjustability with <0.7ppm/°C tempco shift per 100mV - enables binary-scaled outputs like 10.240V |
| Short-Circuit Robustness | Indefinite output short to GND or VIN - protects against board-level faults without latch-up |
Applications
| Digital Voltmeter Calibration | A/D Converter Reference |
|---|---|
Use Scenario: High-accuracy handheld or benchtop DVM requiring traceable 10V reference for self-calibration and range scaling. IC Role / Device Role / Timing Role: Primary voltage reference source for internal 24-bit sigma-delta ADC and auto-zero circuitry. Use Value: ±0.15% initial accuracy and 12ppm/°C tempco ensure <0.01% reading error over 0°C–70°C without periodic recalibration. | Use Scenario: Precision data acquisition system digitizing sensor signals with 16+ bit resolution. IC Role / Device Role / Timing Role: Stable analog reference for successive-approximation and pipeline ADCs. Use Value: 20µVP-P low-frequency noise prevents LSB toggling in 16-bit conversions; 5µs settling enables high-throughput sampling. |
| D/A Converter Reference | Voltage Regulator Trim |
Use Scenario: Industrial process controller generating precise analog outputs (e.g., 4–20mA, 0–10V) via DAC-driven current sources. IC Role / Device Role / Timing Role: Reference input to multiplying DACs and output-stage op-amps. Use Value: 0.001%/mA load regulation ensures DAC output remains stable despite varying load currents across multiple channels. | Use Scenario: Programmable lab power supply requiring adjustable, high-stability output voltage setpoint. IC Role / Device Role / Timing Role: Trim-adjustable reference feeding error amplifier feedback network. Use Value: TRIM pin allows precise 10.000V → 10.240V reconfiguration for binary-aligned output ranges without redesigning feedback dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF01CPZ | Same 8-pin narrow SO package, ±0.3% initial accuracy, 25ppm/°C tempco, higher 1.8mA supply current | Lower accuracy and stability limit use in <14-bit systems; no trim terminal | Select when cost sensitivity outweighs precision requirements and trim capability is unnecessary |
| MAX6126AASA10 | 10V series reference, 8-pin SO, ±0.04% initial accuracy, 3ppm/°C tempco, 1.2mA supply current, no trim pin | Higher precision but fixed output; not adjustable; requires different biasing topology | Select for metrology-grade applications where absolute accuracy > adjustability, and layout can accommodate series-reference constraints |
Compared with REF01CPZ and MAX6126AASA10, the MAX674CSA uniquely balances factory-trimmed 0.15% accuracy, 12ppm/°C stability, and ±300mV adjustability in a legacy-compatible SO package-making it optimal for upgrading REF01-based designs needing improved performance without PCB changes.
Availability
MAX674CSA is available at Aetrix Electronics and suitable for digital voltmeters, A/D converters, D/A converters, and precision voltage regulators requiring stable component supply across industrial and test equipment programs.
Supply support for MAX674CSA 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, communications, and consumer applications.
The MAX674CSA belongs to Maxim's precision voltage reference product line, designed specifically for applications demanding tight initial accuracy, low thermal drift, and robust operation in calibration, instrumentation, and data conversion systems.
FAQ
What is the operating temperature range for the MAX674CSA?
The MAX674CSA is rated for operation from 0°C to +70°C. This commercial-grade temperature range is explicitly guaranteed in the ordering information table and applies to all electrical specifications unless otherwise noted. The device's 12ppm/°C temperature coefficient is specified and tested across this full range using the box method, ensuring predictable performance in office, lab, and non-extreme industrial environments. MAX674CSA does not support extended or military temperature grades.
Does the MAX674CSA require external components to function?
The MAX674CSA operates as a complete 3-terminal voltage reference with only VIN, GND, and VOUT connections required for basic functionality. No external capacitors or resistors are needed for stability or regulation. However, the TRIM pin supports optional external resistor networks for output adjustment (±300mV), and a 10kΩ potentiometer is shown in the typical operating circuit. The MAX674CSA itself contains all necessary bandgap, amplification, and protection circuitry on-die.
Is the MAX674CSA pin-compatible with the REF01?
Yes, the MAX674CSA is explicitly stated as pin-for-pin compatible with the REF01 in the Features section and confirmed by identical pin numbering and functions in the SO package configuration. Both devices share the same 8-pin narrow SO footprint (S8-4*), with matching VOUT (pin 1), TRIM (pin 2), GND (pin 3), and VIN (pin 6) assignments. This allows direct replacement in existing REF01-based layouts without PCB modification, provided the tighter MAX674CSA specifications meet system requirements.
What is the maximum load current the MAX674CSA can drive?
The MAX674CSA is specified to deliver up to 10mA load current while maintaining its published load regulation of 0.001%/mA. The "Maximum Load Current vs. Input Voltage" and "vs. Temperature" graphs confirm stable operation up to 10mA across 13V–33V input and 0°C–70°C ambient. Exceeding 10mA may degrade accuracy and increase self-heating effects; for higher current needs, a buffer amplifier is recommended. The MAX674CSA includes short-circuit protection but is not designed as a power source.
Can the output voltage of the MAX674CSA be adjusted, and how does it affect performance?
Yes, the MAX674CSA output can be adjusted ±300mV around 10V using the TRIM pin with an external resistor network. Adjusting the output changes the reference by approximately 0.7ppm/°C per 100mV shift - so a full ±300mV trim adds ≤2.1ppm/°C to the base 12ppm/°C tempco. This enables precise outputs like 10.240V for binary-scaled systems without sacrificing stability. The trim function does not affect noise, supply current, or settling time specifications.
MAX674CSA 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:
- 10 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 12ppm/°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
MAX674CSA FAQ
1.How can I place an order for MAX674CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX674CSA 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 MAX674CSA reliable?
The price and inventory of MAX674CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX674CSA is usually 5 days.
3.What payment methods are accepted for MAX674CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX674CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX674CSA?
MAX674CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX674CSA 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 MAX674CSA?
For technical support, including MAX674CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX674CSA requirements.
6.How does Aetrix verify that MAX674CSA is sourced from the original manufacturer or authorized distributors?
All MAX674CSA 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 MAX674CSA meets industry standards.
7.What is the process for return or replacement of MAX674CSA?
All MAX674CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX674CSA, 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 MAX674CSA part is unused and in its original packaging.
Return procedure for MAX674CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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