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Analog Devices Inc./Maxim Integrated MAX6173AASA+T
- Part No.:
- MAX6173AASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6173AASA+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,095
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Product details
Overview
MAX6173AASA+T from Maxim Integrated is a high-precision, low-noise 2.5V voltage reference with integrated temperature sensor output (TEMP), ±0.06% initial accuracy, 3ppm/°C max temperature coefficient, and 3.8µVP-P (0.1Hz–10Hz) noise - designed for metrology-grade ADC/DAC biasing in automotive and industrial systems.
For engineers reviewing the MAX6173AASA+T datasheet, MAX6173AASA+T pinout, MAX6173AASA+T application, or MAX6173AASA+T equivalent, this page delivers verified electrical specs, thermal transducer behavior, trim interface design guidance, and AEC-Q100-compliant operating envelope details critical for high-resolution data acquisition and closed-loop temperature monitoring.
Technical Context
The MAX6173AASA+T uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C max TCVOUT over –40°C to +125°C. Its TEMP pin provides a linear 1.9mV/°C analog voltage proportional to die temperature, calibrated at 570mV at +25°C.
It features a TRIM input enabling ±6% output adjustment via external resistive divider, operates from (VOUT + 2V) to +40V supply, draws only 320µA typical quiescent current, and remains stable without output bypass capacitor - even with up to 100µF capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.0015V (±0.06% initial accuracy at +25°C) |
| Tempco (TCVOUT) | ≤3ppm/°C over –40°C to +125°C - enables ≤1 LSB error in 16-bit systems across full automotive range |
| Noise (0.1Hz–10Hz) | 3.8µVP-P - supports 20+ bit effective resolution in precision digitization |
| Supply Current | 320µA typical, ≤450µA max at +25°C - minimizes self-heating and extends battery life |
| TEMP Output | 570mV ±155mV at +25°C, 1.9mV/°C slope - direct die-temperature sensing without calibration |
| Load Drive | Sources up to 30mA / sinks up to 2mA - drives ADC reference inputs and small buffers directly |
| Input Range | +4.5V to +40V - accommodates wide-input industrial and automotive supplies |
Pinout & Package
MAX6173AASA+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 on PCB |
| 2 | IN | Positive power-supply input - accepts 4.5V to 40V; requires 0.1µF ceramic decoupling near pin |
| 3 | TEMP | Digital-temperature-proportional analog output - 1.9mV/°C slope, 570mV nominal at +25°C |
| 4 | GND | Analog ground reference - common return for IN, OUT, TRIM, and TEMP |
| 5 | TRIM | Voltage-adjust input - connect to center tap of resistor divider between OUT and GND for ±6% fine tuning |
| 6 | OUT | Precision 2.5V reference output - stable with 0–100µF capacitive loads; no bypass cap required |
| 7 | N.C. | No internal connection - leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap core | Enables 3ppm/°C max tempco without external compensation networks |
| Laser-trimmed thin-film resistors | Guarantees ±0.06% initial accuracy without post-package trimming |
| Integrated TEMP output | Eliminates need for separate temperature sensor in space-constrained systems |
| No output capacitor required | Saves board area and avoids capacitor aging/reliability concerns in long-life applications |
| Short-circuit protected output | Withstands 60mA sink-to-GND fault indefinitely; limits to 3mA sink-to-IN - enhances system robustness |
Applications
| High-Resolution Data Acquisition | Automotive Battery Monitoring |
|---|---|
Use Scenario: 24-bit sigma-delta ADC measuring strain gauge or RTD signals in industrial PLC modules. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog-to-digital conversion. Use Value: 3.8µVP-P low-frequency noise and 3ppm/°C stability ensure <1 LSB error over full temperature range without recalibration. | Use Scenario: Real-time cell-voltage and pack-temperature monitoring in EV battery management systems (BMS). IC Role / Device Role / Timing Role: Dual-function device providing precise 2.5V reference for ADCs and direct die-temperature sensing via TEMP pin. Use Value: Eliminates discrete temperature sensor; TEMP output tracks junction temperature with 1.9mV/°C linearity, enabling accurate thermal derating. |
| Portable Precision Instrumentation | Industrial Process Control Transmitters |
Use Scenario: Handheld digital multimeter (DMM) requiring ultra-stable reference for autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Low-power, high-accuracy reference powering SAR and delta-sigma converters during battery operation. Use Value: 320µA typical supply current extends battery life; no output capacitor reduces component count and board footprint. | Use Scenario: 4–20mA loop-powered transmitter converting pressure/flow sensor outputs with HART modulation. IC Role / Device Role / Timing Role: Reference source for signal conditioning and DAC output stage, operating from wide-input loop supply. Use Value: 4.5V–40V input range accommodates varying loop voltage drops; AEC-Q100 qualification ensures reliability in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | Lower 3µVP-P noise (0.1–10Hz), but 6ppm/°C max tempco and no TEMP output | Best for pure low-noise reference needs where temperature sensing is handled separately | Select when lowest possible noise dominates over integrated temperature sensing or automotive temp range |
| ADR4525BRZ | Higher 0.02% initial accuracy, 2ppm/°C tempco, but no TEMP output and 500µA supply current | Suitable for lab-grade instrumentation where power is not constrained and temperature is externally monitored | Choose when highest initial accuracy and lowest tempco are prioritized over integration and power efficiency |
Compared with REF5025IDR and ADR4525BRZ, the MAX6173AASA+T uniquely combines automotive-grade temperature stability, integrated die-temperature sensing, and ultra-low quiescent current - making it optimal for space- and power-constrained embedded systems requiring both precision reference and thermal awareness.
Availability
MAX6173AASA+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, automotive battery monitoring, and portable instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6173AASA+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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6173–MAX6177 family was engineered to deliver metrology-grade voltage references with integrated temperature sensing - targeting high-accuracy data converters and closed-loop thermal control in harsh environments.
FAQ
What is the guaranteed initial accuracy of the MAX6173AASA+T?
The MAX6173AASA+T guarantees ±0.06% initial accuracy (±1.5mV) at +25°C, as confirmed by laser trimming and 100% production testing. This specification applies specifically to the 'A' grade variant denoted in the part number and is distinct from the looser ±0.1% tolerance of the 'B' grade versions.
Does the MAX6173AASA+T require an output bypass capacitor for stability?
No, the MAX6173AASA+T does not require an output bypass capacitor for stability. It is internally compensated and remains stable with capacitive loads from 0 to 100µF - a key advantage that saves PCB area and eliminates capacitor-related drift or aging effects in long-life applications.
How is the TEMP output calibrated, and what is its sensitivity?
The TEMP output of the MAX6173AASA+T is calibrated to 570mV at +25°C with a nominal sensitivity of 1.9mV/°C. The output voltage varies linearly with die temperature, enabling direct junction-temperature measurement without external calibration - critical for thermal derating in automotive and industrial power systems.
Can the output voltage of the MAX6173AASA+T be adjusted, and how?
Yes, the MAX6173AASA+T output can be trimmed ±6% using the TRIM pin. Connect a resistive divider between OUT and GND, with the wiper tied to TRIM. The output change follows ∆VOUT = 2 × (VTRIM − VOUT/2) × k, where k ≈ ±6%. This allows field calibration or compensation for system-level gain errors.
Is the MAX6173AASA+T qualified for automotive applications?
Yes, the MAX6173AASA+T is AEC-Q100 qualified for automotive use, operating reliably across the full –40°C to +125°C ambient temperature range. Its low tempco, high accuracy, and integrated TEMP output make it suitable for battery monitoring, engine control, and ADAS subsystems requiring long-term stability and thermal awareness.
MAX6173AASA+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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.8µVp-p
- Noise - 10Hz to 10kHz:
- 6.8µVrms
- Voltage - Input:
- 4.5V ~ 40V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6173AASA+T FAQ
1.How can I place an order for MAX6173AASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6173AASA+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 MAX6173AASA+T reliable?
The price and inventory of MAX6173AASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6173AASA+T is usually 5 days.
3.What payment methods are accepted for MAX6173AASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6173AASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6173AASA+T?
MAX6173AASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6173AASA+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 MAX6173AASA+T?
For technical support, including MAX6173AASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6173AASA+T requirements.
6.How does Aetrix verify that MAX6173AASA+T is sourced from the original manufacturer or authorized distributors?
All MAX6173AASA+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 MAX6173AASA+T meets industry standards.
7.What is the process for return or replacement of MAX6173AASA+T?
All MAX6173AASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6173AASA+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 MAX6173AASA+T part is unused and in its original packaging.
Return procedure for MAX6173AASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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