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Analog Devices Inc./Maxim Integrated MAX6174AASA+
- Part No.:
- MAX6174AASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6174AASA+.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,404
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Product details
Overview
MAX6174AASA+ from Maxim Integrated is a high-precision, low-noise 4.096V voltage reference with integrated temperature sensor output, ±0.06% initial accuracy, 3ppm/°C max temperature coefficient, and 7µVP-P (0.1Hz–10Hz) noise-designed for 16-bit ADC/DAC calibration in automotive and industrial data acquisition systems.
For engineers reviewing the MAX6174AASA+ datasheet, MAX6174AASA+ pinout, MAX6174AASA+ application, or MAX6174AASA+ equivalent, this page delivers verified electrical specs, thermal transducer behavior, trim interface design guidance, and AEC-Q100-compliant operating envelope details critical for precision analog signal chains.
Technical Context
The MAX6174AASA+ employs bandgap-based curvature-corrected topology with laser-trimmed thin-film resistors to achieve ultra-low drift across –40°C to +125°C. Its TEMP pin provides a linear 2.1mV/°C output referenced to die temperature, enabling on-chip thermal monitoring without external sensors.
It features a dedicated TRIM terminal supporting ±6% output adjustment via external resistive divider, while maintaining stability with capacitive loads up to 100µF-eliminating mandatory output bypassing and simplifying PCB layout in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.06% (±2.46mV) at +25°C - ensures ≤1 LSB error in 16-bit systems over full temp range |
| Tempco (TCVOUT) | ≤3ppm/°C (–40°C to +125°C) - guarantees <±0.5mV total drift across automotive temperature range |
| Noise (0.1Hz–10Hz) | 7µVP-P - supports high-resolution measurement without added filtering overhead |
| Supply Current | 320µA (typ), 500µA (max at +25°C) - enables low-power battery operation and reduces self-heating effects |
| TEMP Output | 475–785mV at +25°C, 2.1mV/°C slope - provides calibrated die temperature sensing with ±1.5°C accuracy |
| Load Drive | Sources 30mA / sinks 2mA - sufficient to drive ADC reference inputs and small buffer stages directly |
| Input Voltage Range | +6.1V to +40V - accommodates wide-input industrial supplies and unregulated battery rails |
Pinout & Package
MAX6174AASA+ 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 | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected on PCB; no external routing allowed |
| 2 | IN | Positive supply input - accepts 6.1V–40V; requires local 0.1µF ceramic decoupling |
| 3 | TEMP | Digital-temperature transducer output - provides 2.1mV/°C analog voltage proportional to die temperature |
| 4 | GND | Analog ground reference - must be low-impedance star point shared with ADC reference ground |
| 5 | TRIM | Voltage-adjust input - connects to center tap of resistor divider between OUT and GND for ±6% fine tuning |
| 6 | OUT | Precision 4.096V reference output - stable with 0–100µF capacitive load; no bypass capacitor required |
| 7 | N.C. | No internal connection - left floating; no PCB trace or pad needed |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear 2.1mV/°C TEMP output enables real-time die-temperature compensation in calibration algorithms |
| Trimmable reference | ±6% output adjustment via external resistive divider on TRIM pin - eliminates need for custom factory-trimmed variants |
| No output capacitor required | Guaranteed stability with 0–100µF load capacitance - saves board area and avoids ESR-related instability risks |
| AEC-Q100 qualified | Qualified for automotive applications per AEC-Q100 Rev H - supports under-hood and ADAS module deployment |
| Short-circuit protection | 60mA current limit when OUT shorted to GND; 3mA limit when shorted to IN - prevents latch-up and damage during fault conditions |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: 16-bit SAR ADC front-end in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion, with TEMP used for on-the-fly gain/offset correction. Use Value: 3ppm/°C tempco and 7µVP-P noise ensure <±0.5 LSB total error across –40°C to +85°C operating range. |
Use Scenario: Reference and thermal monitor in automotive oxygen sensor interface circuits. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for sensor excitation and ratiometric measurement, while TEMP monitors IC junction temperature. Use Value: AEC-Q100 qualification and –40°C to +125°C operation enable direct placement near hot exhaust components. |
| Portable Precision Instrumentation | Calibration Equipment |
|
Use Scenario: Battery-powered handheld multimeter requiring low quiescent current and high DC accuracy. IC Role / Device Role / Timing Role: Main reference source for DMM's 24-bit ΣΔ ADC; TRIM enables field recalibration without hardware change. Use Value: 320µA typical supply current extends battery life >200 hours; ±0.06% initial accuracy eliminates factory trim cost. |
Use Scenario: Benchtop calibrator generating precise 4.096V reference for DAC testing and metrology labs. IC Role / Device Role / Timing Role: Primary reference standard; TEMP output validates thermal stability during extended warm-up periods. Use Value: 120ppm thermal hysteresis and 50ppm/1000h long-term stability meet ISO/IEC 17025 traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4540BRTZ-REEL7 | 4.096V, ±0.02% initial accuracy, 3ppm/°C, but no TEMP output or TRIM pin | Lacks integrated temperature sensing and output trimming - requires external circuitry for thermal compensation or calibration | Select when highest initial accuracy is prioritized over on-chip diagnostics and field adjustability |
| REF5040AIDR | 4.096V, ±0.05%, 3ppm/°C, 5.5µVP-P noise, but only –40°C to +125°C with derated performance above +85°C | No TEMP output; not AEC-Q100 qualified - limited to industrial, non-automotive use cases | Choose for lower noise in lab-grade instrumentation where automotive qualification is unnecessary |
Compared with ADR4540BRTZ-REEL7 and REF5040AIDR, MAX6174AASA+ uniquely integrates temperature sensing and trim capability in an AEC-Q100-qualified 4.096V reference-enabling single-chip solutions for automotive ADC calibration, field-reconfigurable instruments, and thermally compensated sensor interfaces without added components or layout complexity.
Availability
MAX6174AASA+ is available at Aetrix Electronics and suitable for high-precision data acquisition, automotive sensor conditioning, and portable instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6174AASA+ 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 demanding industrial, automotive, and communications applications.
The MAX6173–MAX6177 family was engineered specifically for high-resolution data converter reference needs-combining ultra-low drift, integrated diagnostics, and robust operation in harsh environments.
FAQ
What is the guaranteed initial accuracy of the MAX6174AASA+?
The MAX6174AASA+ guarantees ±0.06% initial accuracy (±2.46mV at 4.096V) at +25°C, as specified in the Electrical Characteristics table for the 'A' grade variant. This tolerance is laser-trimmed at wafer test and remains valid across the full –40°C to +125°C operating range without additional calibration.
Does the MAX6174AASA+ require an output bypass capacitor for stability?
No-the MAX6174AASA+ is internally compensated and stable with 0–100µF capacitive loads. Unlike many references, it does not require an output bypass capacitor, reducing bill-of-materials count and PCB area. Stability is maintained even with large ceramic or tantalum output caps used for transient suppression.
How is the TEMP output calibrated, and what is its accuracy?
The TEMP output of the MAX6174AASA+ provides 2.1mV/°C with a nominal 630mV at +25°C (range: 475–785mV). Accuracy is ±1.5°C over –40°C to +125°C after accounting for self-heating. The output is proportional to die temperature-not ambient-so thermal coupling to the PCB must be considered in system-level calibration.
Can the MAX6174AASA+ be used in automotive applications?
Yes-the MAX6174AASA+ is AEC-Q100 qualified (Grade 0, –40°C to +125°C) and designed for automotive use. It meets stringent reliability, ESD, and thermal cycling requirements, making it suitable for engine control units, ADAS sensor interfaces, and infotainment power management where precision reference stability is critical.
What is the maximum allowable input voltage for the MAX6174AASA+?
The MAX6174AASA+ supports an input voltage range of +6.1V to +40V. Absolute maximum rating is +42V on the IN pin relative to GND. Operation above +40V is not guaranteed and may degrade long-term reliability or initial accuracy specifications.
MAX6174AASA+ 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):
- 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+ FAQ
1.How can I place an order for MAX6174AASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6174AASA+ 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+ reliable?
The price and inventory of MAX6174AASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6174AASA+ is usually 5 days.
3.What payment methods are accepted for MAX6174AASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6174AASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6174AASA+?
MAX6174AASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6174AASA+ 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+?
For technical support, including MAX6174AASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6174AASA+ requirements.
6.How does Aetrix verify that MAX6174AASA+ is sourced from the original manufacturer or authorized distributors?
All MAX6174AASA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6174AASA+?
All MAX6174AASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6174AASA+, 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+ part is unused and in its original packaging.
Return procedure for MAX6174AASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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