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Analog Devices Inc./Maxim Integrated MAX6174AASA+T
- Part No.:
- MAX6174AASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6174AASA+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,495
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Product details
Overview
MAX6174AASA+T from Maxim Integrated is a high-precision, low-noise 4.096V voltage reference with integrated temperature sensor output (TEMP), ±0.06% initial accuracy, 3ppm/°C max temperature coefficient over –40°C to +125°C, and 7µVP-P (0.1Hz–10Hz) noise - designed for metrology-grade ADC/DAC biasing in automotive and industrial instrumentation.
For engineers reviewing the MAX6174AASA+T datasheet, MAX6174AASA+T pinout, MAX6174AASA+T application, or MAX6174AASA+T equivalent, key selection criteria include guaranteed 4.096V output tolerance, TRIM-adjustable range (±3% to ±6%), TEMP output linearity (2.1mV/°C), no-output-capacitor stability, and AEC-Q100-compatibility in automotive-grade SO-8 packaging.
Technical Context
The MAX6174AASA+T uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C max TCVOUT and ±0.06% initial accuracy. Its TEMP pin delivers a linear 2.1mV/°C analog voltage proportional to die temperature, calibrated at 630mV @ +25°C (300–1130mV over full range).
It supports trimming via external resistive divider on TRIM pin (0–VOUT), enabling ±3% to ±6% output adjustment. The device operates from 6.1V to 40V input, draws 320µA typical supply current, sources up to 30mA, sinks up to 2mA, and remains stable without output bypass capacitor - even with 100µF capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal, ±0.06% initial accuracy (4.0935V to 4.0985V at +25°C) |
| Tempco (TCVOUT) | ≤3ppm/°C over –40°C to +125°C - ensures ≤0.5 LSB drift in 16-bit systems across full automotive temp range |
| Noise (0.1Hz–10Hz) | 7µVP-P - enables sub-18-bit effective resolution in precision data acquisition |
| Supply Current | 320µA typ / 500µA max at +25°C - minimizes self-heating and extends battery life in portable instruments |
| TEMP Output | 630mV @ +25°C, 2.1mV/°C slope (300–1130mV over –40°C to +125°C) - provides direct die-temperature sensing without external components |
| Load Drive | Sources 30mA / sinks 2mA - supports direct driving of SAR ADC reference inputs and small buffer stages |
| Input Voltage Range | 6.1V to 40V - accommodates wide-input industrial supplies and unregulated automotive rails |
Pinout & Package
MAX6174AASA+T is housed in an 8-pin SO (Small Outline) package (package code S8+4, outline 21-0041), RoHS-compliant, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected externally; no routing or soldering required |
| 2 | IN | Positive power-supply input - accepts 6.1V to 40V; requires local 0.1µF ceramic decoupling |
| 3 | TEMP | Temperature-proportional analog output - 2.1mV/°C slope, 630mV @ +25°C; high-impedance, must not be loaded |
| 4 | GND | Analog ground reference - star-point connection recommended for low-noise layout |
| 5 | TRIM | Voltage-adjust input - connect to center tap of resistive divider between OUT and GND for ±3% to ±6% fine-tuning |
| 6 | OUT | Precision 4.096V reference output - stable without bypass cap; drives up to 30mA source / 2mA sink |
| 7 | N.C. | No internal connection - leave floating; no trace or pad required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear TEMP output (2.1mV/°C) eliminates need for external thermal diode or IC in system-level temperature monitoring |
| No-output-capacitor stability | Stable with 0–100µF capacitive loads - reduces BOM count and PCB area in space-constrained modules |
| Trim-adjustable reference | ±3% to ±6% output tuning via external resistor network - enables field calibration without rework |
| AEC-Q100 qualified | Qualified for automotive applications per AEC-Q100 Rev H (Grade 0: –40°C to +150°C junction) - supports under-hood and ADAS designs |
| Short-circuit protection | 60mA limit when OUT shorted to GND; 3mA limit when OUT shorted to IN - prevents latch-up and damage during fault conditions |
Applications
| Automotive Battery Monitoring | Industrial Data Acquisition |
|---|---|
Use Scenario: Real-time cell-voltage measurement in 12V–48V EV battery packs using 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Provides ultra-stable 4.096V reference for ADC conversion and simultaneous die-temperature readout via TEMP pin. Use Value: 3ppm/°C tempco and 7µVP-P noise ensure <0.5 LSB total error over –40°C to +125°C, meeting ASIL-B functional safety requirements. | Use Scenario: High-resolution digital voltmeter front-end with auto-ranging and temperature compensation. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope or sigma-delta ADC, while TEMP output feeds microcontroller for ambient drift correction. Use Value: ±0.06% initial accuracy and 120ppm thermal hysteresis enable <0.01% absolute measurement repeatability across thermal cycles. |
| Medical Instrumentation | Test & Measurement Equipment |
Use Scenario: Portable ECG amplifier with integrated lead-off detection and calibration. IC Role / Device Role / Timing Role: Supplies precise 4.096V bias to instrumentation amplifier and ADC, with TEMP used for real-time gain/offset compensation. Use Value: Low 320µA quiescent current extends battery runtime; no-output-capacitor design simplifies layout in compact handheld enclosures. | Use Scenario: Benchtop multimeter reference subsystem requiring recalibration traceability and long-term stability. IC Role / Device Role / Timing Role: Primary voltage standard for internal DAC-based calibration engine and external reference output port. Use Value: 50ppm/1000h long-term stability and ±3ppm/°C tempco meet ANSI C12.20 Class 0.1 accuracy requirements for revenue-grade meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max, 5.5µVP-P noise, but no TEMP output; SO-8, –40°C to +125°C | Lacks integrated temperature sensing - requires separate thermal sensor for die-temp monitoring | Select when lowest noise is critical and TEMP functionality is unnecessary |
| ADR4540BRZ | 4.096V, 3ppm/°C max, 6.5µVP-P noise, no TEMP output; SO-8, –40°C to +125°C, higher 450µA IQ | No trim capability and no temperature transducer - limited flexibility for field calibration or thermal compensation | Choose for legacy compatibility with Analog Devices reference designs where TRIM/TEMP features are unused |
Compared with REF5040IDR and ADR4540BRZ, MAX6174AASA+T uniquely integrates a calibrated 2.1mV/°C TEMP output and ±3%–±6% TRIM adjustability - enabling single-chip solutions for temperature-compensated precision measurement without added components or layout complexity.
Availability
MAX6174AASA+T is available at Aetrix Electronics and suitable for automotive battery management, industrial data acquisition, medical instrumentation, and test & measurement equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6174AASA+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) designs high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX6173–MAX6177 family was engineered specifically for metrology-grade voltage referencing in systems requiring simultaneous high-accuracy voltage and temperature sensing - targeting 16-bit+ data converters in harsh-environment applications.
FAQ
What is the guaranteed initial accuracy of MAX6174AASA+T?
The MAX6174AASA+T guarantees ±0.06% initial accuracy at +25°C, corresponding to a 4.096V output tolerance of ±2.46mV (4.0935V to 4.0985V). This specification is production-tested and applies across the full –40°C to +125°C operating range per the datasheet's electrical characteristics table for MAX6174A.
Does MAX6174AASA+T require an output bypass capacitor for stability?
No, MAX6174AASA+T does not require an output bypass capacitor for stability. It is explicitly characterized as stable with 0–100µF capacitive loads. This eliminates board space and cost associated with external capacitors while maintaining phase margin across all operating conditions.
How is the TEMP output of MAX6174AASA+T calibrated and what is its usable range?
The TEMP output of MAX6174AASA+T is factory-calibrated to 630mV at +25°C with a slope of 2.1mV/°C. Its specified range is 300mV to 1130mV over –40°C to +125°C. The output is high-impedance and must not be loaded; it provides direct die-temperature measurement without external components.
Can MAX6174AASA+T be used in automotive applications?
Yes, MAX6174AASA+T is AEC-Q100 qualified (Grade 0) and rated for –40°C to +125°C operation. Its robustness against thermal cycling, low hysteresis (120ppm), and short-circuit protection make it suitable for under-hood automotive applications including battery monitoring, ADAS sensor conditioning, and powertrain control modules.
What is the maximum allowable input voltage for MAX6174AASA+T?
The absolute maximum input voltage for MAX6174AASA+T is +42V (IN to GND), but the guaranteed operating range is 6.1V to +40V. Operation below 6.1V may result in degraded regulation or dropout; the minimum headroom depends on load current and temperature - see dropout voltage curves in the datasheet.
MAX6174AASA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 7µVp-p
- Noise - 10Hz to 10kHz:
- 11.5µVrms
- Voltage - Input:
- 6.1V ~ 40V
- Current - Supply:
- 650µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6174AASA+T FAQ
1.How can I place an order for MAX6174AASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6174AASA+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 MAX6174AASA+T reliable?
The price and inventory of MAX6174AASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6174AASA+T is usually 5 days.
3.What payment methods are accepted for MAX6174AASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6174AASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6174AASA+T?
MAX6174AASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6174AASA+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 MAX6174AASA+T?
For technical support, including MAX6174AASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6174AASA+T requirements.
6.How does Aetrix verify that MAX6174AASA+T is sourced from the original manufacturer or authorized distributors?
All MAX6174AASA+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 MAX6174AASA+T meets industry standards.
7.What is the process for return or replacement of MAX6174AASA+T?
All MAX6174AASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6174AASA+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 MAX6174AASA+T part is unused and in its original packaging.
Return procedure for MAX6174AASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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