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Analog Devices Inc./Maxim Integrated MAX6175AASA+
- Part No.:
- MAX6175AASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6175AASA+.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:778
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Product details
Overview
MAX6175AASA+ from Maxim Integrated is a high-precision, low-noise 5.0V voltage reference with integrated temperature sensor output (TEMP), ±0.06% initial accuracy, 1.5–3ppm/°C max temperature coefficient over –40°C to +125°C, and 9µVP-P (0.1Hz–10Hz) noise - used in 16-bit ADC/DAC calibration, automotive sensor signal chains, and precision power monitoring.
For engineers reviewing the MAX6175AASA+ datasheet, MAX6175AASA+ pinout, MAX6175AASA+ application, or MAX6175AASA+ equivalent, this page delivers verified electrical specs, thermal transducer behavior, TRIM-adjustable output, AEC-Q100-compatible operation, and real-world stability data for high-resolution metrology and automotive-grade designs.
Technical Context
The MAX6175AASA+ employs curvature-corrected bandgap architecture with laser-trimmed thin-film resistors to achieve 1.5–3ppm/°C tempco and ±0.06% initial accuracy. Its TEMP pin provides a linear 2.1mV/°C analog voltage proportional to die temperature, enabling on-chip thermal monitoring without external sensors.
It features a dedicated TRIM input allowing ±6% output adjustment via external resistive divider, operates from 7.0V to 40V supply, sources up to 30mA, sinks 2mA, and remains stable with capacitive loads up to 100µF - eliminating mandatory output bypassing while supporting fast turn-on (230µs to 0.1%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±0.003V (±0.06%) at +25°C, no load - enables direct interface with 5V ADC reference inputs without scaling. |
| Tempco (TCVOUT) | 1.5–3ppm/°C (–40°C to +125°C) - ensures ≤0.5 LSB error in 16-bit systems across full automotive temperature range. |
| Noise (0.1Hz–10Hz) | 9µVP-P - supports <18-bit effective resolution in precision digitization when paired with low-noise amplifiers. |
| Supply Current | 320–550µA (–40°C to +125°C) - enables battery-powered portable instrumentation with multi-year runtime. |
| TEMP Output | 630mV ±155mV at +25°C, 2.1mV/°C slope - provides calibrated die temperature sensing with ±2.5°C accuracy after system-level calibration. |
| Load Drive | Sources 30mA / sinks 2mA - drives ADC reference buffers, op-amp bias networks, and small-signal analog circuitry directly. |
| Input Voltage Range | 7.0V to 40V - accommodates wide-input industrial supplies and unregulated automotive rails without external regulators. |
Pinout & Package
MAX6175AASA+ 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 or termination. |
| 2 | IN | Positive supply input - accepts 7.0V to 40V; requires local 0.1µF ceramic decoupling for optimal line transient rejection. |
| 3 | TEMP | Digital-temperature transducer output - provides 2.1mV/°C analog voltage; high-impedance node; avoid loading beyond 100nA. |
| 4 | GND | Analog ground reference - star-connected to system AGND; separate from digital ground to minimize noise coupling. |
| 5 | TRIM | Voltage-controlled trim input - accepts 0V to VOUT; adjusts output ±6% using external resistor divider; open = factory preset. |
| 6 | OUT | Stable 5.0V reference output - low-output-impedance source; stable with 0–100µF capacitive loads; no bypass capacitor required. |
| 7 | N.C. | No connection - internally unconnected; leave floating; do not tie to GND, VCC, or other signals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear 2.1mV/°C TEMP output enables on-die thermal monitoring without external ICs or calibration lookup tables. |
| Trim-adjustable output | ±6% fine-tuning via external resistive divider on TRIM pin - allows field calibration and compensation for board-level drift. |
| No output capacitor required | Guaranteed stability with 0–100µF capacitive loads - eliminates BOM cost, board area, and reliability risk of external bypass caps. |
| AEC-Q100 qualified | Qualified for automotive applications (Grade 0: –40°C to +125°C) - meets stress testing requirements for engine control and ADAS modules. |
| Short-circuit protection | 60mA current limit when OUT shorted to GND; 3mA limit when OUT shorted to IN - prevents latch-up and thermal runaway. |
Applications
| Industrial Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: High-channel-count PLC analog input modules measuring thermocouples, RTDs, and strain gauges. IC Role / Device Role / Timing Role: Primary 5.0V reference for 16-bit SAR ADCs and precision instrumentation amplifiers. Use Value: 1.5–3ppm/°C tempco and 9µVP-P noise ensure ≤0.5 LSB total error across –40°C to +85°C operating range. |
Use Scenario: Engine coolant temperature (ECT) and intake air temperature (IAT) signal conditioning in powertrain ECUs. IC Role / Device Role / Timing Role: Dual-function device: provides stable 5.0V reference for sensor front-end ADCs and die temperature readout via TEMP pin. Use Value: Eliminates need for discrete temperature sensor; TEMP output calibrated to ±2.5°C enables closed-loop thermal derating of ECU firmware. |
| Portable Precision Instrumentation | Medical Patient Monitoring |
Use Scenario: Handheld multimeters and portable oscilloscopes requiring battery longevity and metrological traceability. IC Role / Device Role / Timing Role: Low-quiescent-current (320µA typ) 5.0V reference for auto-ranging ADCs and LCD bias generation. Use Value: 320µA supply current extends AA/AAA battery life to >2 years in sleep-mode-dominated usage profiles. |
Use Scenario: ECG and pulse oximeter front-ends where analog signal integrity directly impacts diagnostic accuracy. IC Role / Device Role / Timing Role: Ultra-low-noise 5.0V reference for 24-bit delta-sigma ADCs digitizing microvolt-level biopotentials. Use Value: 9µVP-P (0.1Hz–10Hz) noise floor preserves SNR >110dB, meeting IEC 60601-2-27 clinical performance thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V, ±0.02% initial accuracy, 3ppm/°C max tempco, 1.8µVP-P noise, 950µA supply current, SO-8 package | Lower noise and tighter initial accuracy but higher quiescent current and no integrated TEMP output | Select when ultra-low noise dominates over power budget and thermal sensing is handled separately |
| REF5050AIDR | 5.0V, ±0.05% initial accuracy, 3ppm/°C max tempco, 5.5µVP-P noise, 1.1mA supply current, SO-8 package | Higher precision and lower noise, but no TEMP output and 3.4× higher supply current than MAX6175AASA+ | Select for lab-grade metrology where power is unconstrained and thermal monitoring is unnecessary |
Compared with ADR4550BRZ and REF5050AIDR, MAX6175AASA+ trades minor noise/accuracy margin for integrated temperature sensing, 3× lower supply current, and automotive qualification - making it optimal for space-, power-, and cost-constrained embedded systems requiring dual functionality.
Availability
MAX6175AASA+ is available at Aetrix Electronics and suitable for industrial 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+ 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6173–MAX6177 family was engineered to deliver simultaneous high-accuracy voltage reference and on-die temperature sensing in a single SO-8 package for automotive and industrial systems needing compact, low-power, AEC-Q100-compliant solutions.
FAQ
What is the guaranteed temperature coefficient specification for MAX6175AASA+ over its full operating range?
The MAX6175AASA+ has a maximum output-voltage temperature coefficient (TCVOUT) of 3ppm/°C across –40°C to +125°C, with typical performance at 1.5ppm/°C. This is measured per JEDEC JESD85 and guarantees ≤0.5 LSB error in 16-bit data converters over the full automotive temperature range - a key spec confirmed in the Electrical Characteristics table on page 6 of the official datasheet.
Can MAX6175AASA+ operate without an output bypass capacitor?
Yes, MAX6175AASA+ is internally compensated and stable with 0–100µF capacitive loads - no output bypass capacitor is required for stability. This is explicitly stated in the General Description and Applications Information sections. Removing the capacitor saves PCB area and improves reliability, especially in space-constrained or high-reliability applications where capacitor failure modes must be avoided.
How is the TEMP output of MAX6175AASA+ calibrated, and what is its accuracy?
The TEMP pin outputs a voltage proportional to die temperature with a nominal slope of 2.1mV/°C and a typical value of 630mV at +25°C (range: 475–785mV). Absolute accuracy depends on system-level calibration; after two-point calibration (e.g., at 0°C and 100°C), die temperature can be resolved to ±2.5°C. Self-heating effects are minimal below 10mW dissipation, and the TEMP equation assumes unloaded conditions.
What is the maximum load current that MAX6175AASA+ can source while maintaining output accuracy?
MAX6175AASA+ is specified to source up to 30mA while maintaining output voltage regulation within datasheet limits (load regulation ≤15ppm/mA from 0–10mA, ≤900ppm for sinking). At 30mA, the output remains within ±0.5% of nominal 5.0V under worst-case conditions (–40°C to +125°C), verified by load transient testing in Figures toc27–toc30. For highest accuracy, keep load current ≤10mA.
Is MAX6175AASA+ AEC-Q100 qualified, and which grade does it meet?
Yes, MAX6175AASA+ is AEC-Q100 qualified and meets Grade 0 specifications (–40°C to +125°C ambient operating temperature), as confirmed in the Benefits and Features section and Ordering Information. This qualification covers stress tests including HTOL, TC, AC/DC, and ESD - making it suitable for engine control units, transmission controllers, and ADAS domain controllers where automotive reliability standards apply.
MAX6175AASA+ 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):
- 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+ FAQ
1.How can I place an order for MAX6175AASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6175AASA+ 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+ reliable?
The price and inventory of MAX6175AASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6175AASA+ is usually 5 days.
3.What payment methods are accepted for MAX6175AASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6175AASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6175AASA+?
MAX6175AASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6175AASA+ 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+?
For technical support, including MAX6175AASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6175AASA+ requirements.
6.How does Aetrix verify that MAX6175AASA+ is sourced from the original manufacturer or authorized distributors?
All MAX6175AASA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6175AASA+?
All MAX6175AASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6175AASA+, 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+ part is unused and in its original packaging.
Return procedure for MAX6175AASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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