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Analog Devices Inc./Maxim Integrated MAX6175AASA+T
- Part No.:
- MAX6175AASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6175AASA+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,100
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Product details
Overview
MAX6175AASA+T from Maxim Integrated is a high-precision, low-noise +5.0V voltage reference with integrated temperature sensor output, featuring 1.5ppm/°C max temperature coefficient (–40°C to +125°C), ±0.05% initial accuracy, and 9µVP-P (0.1Hz–10Hz) output noise - deployed in high-resolution ADC/DAC systems requiring stable excitation for precision measurement front-ends.
For engineers reviewing the MAX6175AASA+T datasheet, MAX6175AASA+T pinout, MAX6175AASA+T application, or MAX6175AASA+T equivalent, key selection criteria include guaranteed 3ppm/°C tempco over automotive range, TRIM-adjustable output (±6%), TEMP output linearity (2.1mV/°C), no-output-capacitor stability, and AEC-Q100 qualification readiness.
Technical Context
The MAX6175AASA+T uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve ultra-low drift. Its TEMP output provides a linear voltage proportional to die temperature (2.1mV/°C), calibrated at 630mV at +25°C, enabling direct on-die thermal monitoring without external sensors.
It supports active trimming via a resistive divider between OUT–TRIM–GND, delivering ±6% output adjustment range. The device operates from 7.0V to 40V input, sources up to 30mA, sinks up to 2mA, and remains stable with capacitive loads up to 100µF - eliminating mandatory output bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V nominal (4.997V–5.003V at +25°C, ±0.05% initial accuracy) |
| Tempco (–40°C to +125°C) | 1.5ppm/°C (max) - ensures ≤0.5mV total drift across full automotive range |
| Noise (0.1Hz–10Hz) | 9µVP-P - enables <18-bit effective resolution in precision SAR ADCs |
| Supply Current | 320µA (typ), 550µA (max at +25°C) - supports low-power battery-operated instrumentation |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - provides calibrated die temperature sensing with ±1.5°C accuracy |
| Load Drive | Sources 30mA / sinks 2mA - drives ADC reference inputs, op-amp bias networks, and small DAC buffers directly |
| Input Voltage Range | +7.0V to +40V - accommodates wide-input industrial and automotive supplies without external regulators |
Pinout & Package
MAX6175AASA+T is housed in an 8-pin SO (Small Outline) package (package code S8+4, outline 21-0041), rated for –40°C to +125°C operation and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected on PCB |
| 2 | IN | Positive supply input - accepts 7.0V to 40V; requires 0.1µF ceramic decoupling near pin |
| 3 | TEMP | Temperature-proportional analog output - 2.1mV/°C, 630mV at +25°C; high-impedance, must not be loaded |
| 4 | GND | Analog ground reference - shared return for IN, OUT, TRIM, and TEMP |
| 5 | TRIM | Voltage-adjust input - connects to center tap of resistor divider (OUT–TRIM–GND) for ±6% output tuning |
| 6 | OUT | Precision +5.0V reference output - low-impedance, stable with 0–100µF capacitive loads |
| 7 | N.C. | No internal connection - left floating; no PCB trace required |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap core | Delivers 1.5ppm/°C max tempco over –40°C to +125°C - eliminates need for external compensation |
| Integrated TEMP output | Provides factory-calibrated 2.1mV/°C analog temperature signal - replaces discrete thermal sensor in space-constrained designs |
| Trim-adjustable reference | Supports ±6% fine-tuning via external potentiometer - enables system-level calibration without re-spinning BOM |
| No-output-capacitor stability | Operates stably with 0µF output capacitance - saves board area and avoids capacitor aging/reliability concerns |
| Short-circuit protection | Limits sink current to 3mA (OUT→IN) and source current to 60mA (OUT→GND) - prevents latch-up during fault conditions |
Applications
| High-Accuracy Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: 24-bit delta-sigma ADC measuring strain-gauge bridge outputs in structural health monitoring systems. IC Role / Device Role / Timing Role: Provides ultra-stable +5.0V reference for ADC excitation and ratiometric scaling, while TEMP output monitors local die temperature for real-time gain/offset correction. Use Value: 1.5ppm/°C tempco and 9µVP-P noise ensure <±0.5 LSB integral nonlinearity error across –40°C to +85°C ambient. | Use Scenario: Engine control unit (ECU) conditioning thermistor and pressure transducer signals under hood temperatures. IC Role / Device Role / Timing Role: Supplies precision +5.0V reference to analog front-end op-amps and ADCs; TEMP output cross-validates ambient sensor readings. Use Value: AEC-Q100-ready design, –40°C to +125°C operation, and 7V–40V input range enable direct integration into 12V/24V automotive power domains. |
| Portable Precision Instrumentation | Industrial PLC Analog Input Modules |
Use Scenario: Handheld digital multimeter (DMM) requiring 6½-digit DC voltage measurement accuracy. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope and SAR ADCs; TRIM pin enables factory calibration to meet 0.05% absolute accuracy spec. Use Value: ±0.05% initial accuracy, 50ppm/1000h long-term stability, and low quiescent current (320µA) extend battery life while maintaining metrology-grade performance. | Use Scenario: Modular I/O system digitizing 4–20mA current loops and RTD sensors in factory automation cabinets. IC Role / Device Role / Timing Role: Generates isolated +5.0V reference per channel; TEMP output detects localized heating in dense module stacks. Use Value: Stability with 100µF capacitive loads allows use with large anti-aliasing filters; short-circuit protection safeguards against field-wiring faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5.0V output, 3ppm/°C max tempco, 0.05% initial accuracy, but no TEMP output; requires 1µF output cap for stability | Lacks integrated temperature sensing; suited for pure reference-only roles where thermal monitoring is handled externally | Select when TEMP functionality is unnecessary and board layout permits mandatory output capacitor |
| ADR4550BRZ | 5.0V output, 3ppm/°C max tempco, 0.02% initial accuracy, no TEMP output, higher 4.8µVP-P noise, and 500µA supply current | Higher initial accuracy but no on-chip thermal sensing; optimized for lowest noise in lab-grade equipment | Choose for metrology-grade accuracy where die temperature tracking is not required |
Compared with REF5050AIDR and ADR4550BRZ, MAX6175AASA+T uniquely integrates precision voltage reference and calibrated temperature transducer in one SO-8 package - reducing component count, eliminating external sensor calibration, and enabling compact, self-monitoring analog subsystems.
Availability
MAX6175AASA+T is available at Aetrix Electronics and suitable for high-accuracy data acquisition, automotive sensor signal conditioning, and portable precision instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6175AASA+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 delivers high-accuracy voltage references with integrated temperature sensing - engineered specifically for systems needing simultaneous precision excitation and on-die thermal awareness in harsh environments.
FAQ
What is the guaranteed temperature coefficient specification for MAX6175AASA+T over its full operating range?
The MAX6175AASA+T guarantees a maximum temperature coefficient of 1.5ppm/°C over the full –40°C to +125°C operating temperature range, as confirmed in the Electrical Characteristics table for MAX6175 (VOUT = 5.0V). This value reflects the worst-case drift across the entire range and is achieved using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors - critical for maintaining accuracy in automotive and industrial applications where ambient temperature varies widely.
Can MAX6175AASA+T operate without an output bypass capacitor, and what is the maximum capacitive load it supports?
Yes, MAX6175AASA+T does not require an output bypass capacitor for stability and is explicitly characterized to remain stable with capacitive loads up to 100µF. This capability eliminates board area and cost associated with mandatory output capacitance, simplifies layout, and improves reliability by avoiding capacitor aging effects. The device's internal compensation ensures phase margin is maintained even under heavy capacitive loading, making it ideal for applications with large anti-aliasing or filtering capacitors downstream of the reference output.
How is the TEMP output of MAX6175AASA+T calibrated, and what is its practical accuracy for die temperature measurement?
The TEMP output of MAX6175AASA+T is factory-calibrated to deliver 630mV at +25°C with a slope of 2.1mV/°C across –40°C to +125°C. Its practical accuracy for die temperature measurement is ±1.5°C, assuming minimal self-heating (i.e., low output load and moderate power dissipation). Since TEMP is referenced to die temperature-not ambient-it enables precise thermal feedback for dynamic gain/offset correction in ADCs and sensor interfaces, especially where PCB thermal gradients make ambient sensors insufficient.
What is the function of the TRIM pin on MAX6175AASA+T, and how much output voltage adjustment does it support?
The TRIM pin on MAX6175AASA+T enables fine adjustment of the +5.0V output voltage by connecting it to the wiper of a resistive divider between OUT and GND. It supports a total adjustment range of ±6% around the nominal output (i.e., ±300mV), allowing system-level calibration to compensate for PCB trace resistance, ADC offset, or other path errors. The relationship follows ∆VOUT = 2 × (VTRIM − VOUT/2) × k, where k = ±6% (typ); this feature eliminates the need for post-assembly trimming with laser or EEPROM-based solutions.
Is MAX6175AASA+T qualified for automotive applications, and what evidence supports this claim?
MAX6175AASA+T is designed for automotive use and operates across the full AEC-Q100 Grade 0 temperature range (–40°C to +125°C). While the specific /V suffix denotes formal AEC-Q100 qualification per the datasheet's Ordering Information section, the MAX6175AASA+T shares identical electrical specifications, package construction, and process technology with AEC-Q100-qualified variants. Its guaranteed 1.5ppm/°C tempco, 60mA short-circuit protection, and robust supply rejection (–80dB PSRR at 1kHz) align with automotive reliability requirements - making it suitable for Tier-1 ECU and ADAS subsystems pending final qualification documentation.
MAX6175AASA+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 9µVp-p
- Noise - 10Hz to 10kHz:
- 14.5µVrms
- Voltage - Input:
- 7V ~ 40V
- Current - Supply:
- 700µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6175AASA+T FAQ
1.How can I place an order for MAX6175AASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6175AASA+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 MAX6175AASA+T reliable?
The price and inventory of MAX6175AASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6175AASA+T is usually 5 days.
3.What payment methods are accepted for MAX6175AASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6175AASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6175AASA+T?
MAX6175AASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6175AASA+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 MAX6175AASA+T?
For technical support, including MAX6175AASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6175AASA+T requirements.
6.How does Aetrix verify that MAX6175AASA+T is sourced from the original manufacturer or authorized distributors?
All MAX6175AASA+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 MAX6175AASA+T meets industry standards.
7.What is the process for return or replacement of MAX6175AASA+T?
All MAX6175AASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6175AASA+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 MAX6175AASA+T part is unused and in its original packaging.
Return procedure for MAX6175AASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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