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Analog Devices Inc./Maxim Integrated MAX6175BASA/V+T
- Part No.:
- MAX6175BASA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6175BASA/V+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,284
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Product details
Overview
MAX6175BASA/V+T from Maxim Integrated is a high-precision, low-noise 5.0V voltage reference with integrated temperature sensor output (TEMP), ±0.1% initial accuracy, 3ppm/°C max temperature coefficient over –40°C to +125°C, and 9µVRMS (10Hz–1kHz) noise performance. It serves as a stable reference for 16-bit ADCs/DACs in automotive engine control units and industrial data acquisition systems.
For engineers reviewing the MAX6175BASA/V+T datasheet, MAX6175BASA/V+T pinout, MAX6175BASA/V+T application, or MAX6175BASA/V+T equivalent, key selection criteria include guaranteed AEC-Q100 qualification (/V suffix), TRIM-adjustable output (±6%), TEMP output linearity (2.1mV/°C), and stability without output bypass capacitors up to 100µF.
Technical Context
The MAX6175BASA/V+T employs bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C max TCVOUT across –40°C to +125°C. Its TEMP pin delivers a linear voltage proportional to die temperature (2.1mV/°C), calibrated at 630mV at +25°C.
It features internal short-circuit protection (60mA sink to GND, 3mA sink to IN), operates from 7.0V to 40V input, draws 320µA typical quiescent current, and supports 30mA sourcing / 2mA sinking load current - all while requiring no output capacitor for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal, ±0.1% initial accuracy (4.995V–5.005V at +25°C) ensures 1 LSB error margin in 16-bit converters over full temp range. |
| Tempco (TCVOUT) | 3ppm/°C max (–40°C to +125°C) enables <±0.5mV drift over automotive temperature range, critical for precision metrology. |
| Noise (10Hz–1kHz) | 9.3µVRMS typical - low enough to avoid degrading ENOB in 18-bit SAR ADCs when used as reference. |
| Supply Range | 7.0V to 40V input - supports direct connection to unregulated 12V/24V automotive rails without pre-regulation. |
| Load Current | Sources 30mA / sinks 2mA - drives multiple op-amp references or ADC reference inputs without external buffers. |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - provides calibrated die temperature sensing with ±1.5°C accuracy after system calibration. |
| TRIM Range | ±6% adjustment via external resistor divider - allows fine-tuning to compensate for PCB trace resistance or system gain errors. |
Pinout & Package
MAX6175BASA/V+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 and AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected on PCB; floating or tied to GND/IN causes undefined behavior. |
| 2 | IN | Positive supply input - accepts 7.0V to 40V; requires local 0.1µF ceramic decoupling for optimal line transient rejection. |
| 3 | TEMP | Temperature-proportional analog output - delivers 2.1mV/°C linear voltage; high-impedance node; buffer recommended if loaded >10kΩ. |
| 4 | GND | Analog ground reference - must be star-connected to system AGND; separate from power ground for noise isolation. |
| 5 | TRIM | Voltage divider tap for output adjustment - connect between OUT and GND via potentiometer; open = factory-set 5.0V output. |
| 6 | OUT | Precision 5.0V reference output - capable of sourcing 30mA; stable with 0–100µF capacitive loads; no bypass cap required. |
| 7 | N.C. | No internal connection - must be left unconnected; routing to copper pour or traces violates layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive applications per Grade 0 (–40°C to +125°C), including stress testing for lifetime reliability in ECU modules. |
| No Output Capacitor Required | Guaranteed stability with 0–100µF capacitive loads eliminates BOM cost and board space for output bypass, simplifying layout in space-constrained modules. |
| Integrated TEMP Sensor | Monitors die temperature with 2.1mV/°C linearity and 630mV @ +25°C - enables real-time thermal derating of adjacent power stages without external sensors. |
| Short-Circuit Protected Output | Self-limits to 60mA when OUT shorted to GND and 3mA when shorted to IN - prevents latch-up and enables robust field-repairable designs. |
| Low Quiescent Current | 320µA typical supply current - extends battery life in always-on automotive telematics and reduces self-heating-induced drift in sealed enclosures. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Data Acquisition System |
|---|---|
Use Scenario: High-accuracy analog front-end for cylinder pressure sensing and knock detection using 16-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and TEMP-based junction temperature compensation of sensor offset. Use Value: 3ppm/°C tempco and 9.3µVRMS noise ensure <±0.5 LSB total error over –40°C to +125°C, meeting ASAM MCD-2 MC calibration requirements. | Use Scenario: Multi-channel precision measurement of strain gauges and RTDs in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Stable 5.0V reference for ratiometric excitation and ADC reference; TEMP pin monitors reference IC self-heating during extended sampling cycles. Use Value: ±6% TRIM capability compensates for PCB trace resistance variations across production batches, eliminating post-assembly calibration. |
| Medical Patient Monitor Analog Front-End | Test & Measurement Equipment Reference Subsystem |
Use Scenario: Biopotential signal conditioning (ECG/EEG) requiring ultra-low-noise, drift-free reference for 24-bit delta-sigma ADCs. IC Role / Device Role / Timing Role: Low-noise 5.0V reference source with TEMP monitoring to detect thermal drift in isolated amplifier stages. Use Value: 0.1% initial accuracy and 120ppm thermal hysteresis enable <±2µV long-term baseline stability over 1000-hour clinical operation. | Use Scenario: Calibration-grade reference subsystem in handheld multimeters and portable DMMs requiring traceable accuracy and wide input voltage tolerance. IC Role / Device Role / Timing Role: Primary reference for auto-ranging voltage measurement circuits; TRIM pin enables factory end-of-line accuracy adjustment. Use Value: 40V max input rating allows direct use from 9V alkaline or Li-ion battery packs without LDO pre-regulation, reducing bill-of-materials count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V, 3ppm/°C max tempco, 0.02% initial accuracy, 5.6µVRMS noise, but no TEMP output or TRIM pin; requires 2.7V–15V supply. | Lacks integrated temperature sensing and output trimming - unsuitable where die temperature monitoring or field calibration is required. | Select ADR4550BRZ only when lowest possible noise and highest initial accuracy are prioritized over functionality and supply flexibility. |
| REF5050AIDR | 5.0V, 3ppm/°C max tempco, 0.05% initial accuracy, 7µVRMS noise, includes TRIM but no TEMP output; 2.7V–18V supply range. | Missing TEMP functionality limits use in thermally adaptive systems; lower max supply voltage restricts direct automotive rail connection. | Choose REF5050AIDR when TRIM capability is needed but TEMP sensing is unnecessary, and supply voltage remains below 18V. |
Compared with ADR4550BRZ and REF5050AIDR, MAX6175BASA/V+T uniquely combines AEC-Q100 qualification, integrated TEMP output, ±6% TRIM, and 40V input tolerance - making it the only drop-in solution for automotive-grade, thermally aware, field-calibratable reference designs.
Availability
MAX6175BASA/V+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog I/O modules, medical patient monitor front-ends, and portable test equipment requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for MAX6175BASA/V+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 automotive, industrial, and communications markets.
The MAX6173–MAX6177 family was engineered specifically for high-accuracy, low-drift voltage referencing in harsh environments - integrating precision bandgap cores, curvature correction, and diagnostic outputs (TEMP) to meet AEC-Q100 and industrial reliability standards.
FAQ
What is the guaranteed initial accuracy of the MAX6175BASA/V+T?
The MAX6175BASA/V+T guarantees ±0.1% initial accuracy at +25°C, meaning its output voltage falls within 4.995V to 5.005V under no-load conditions. This specification is tested 100% in production and applies across the full –40°C to +125°C operating range per design guarantee, enabling reliable 16-bit converter performance without post-calibration.
Does the MAX6175BASA/V+T require an output bypass capacitor for stability?
No, the MAX6175BASA/V+T does not require an output bypass capacitor for stability. It is internally compensated and remains stable with capacitive loads from 0 to 100µF. This eliminates the need for external components, reduces PCB area, and avoids potential phase-margin degradation caused by capacitor ESR/ESL - a key advantage in compact automotive and portable instrumentation designs.
How is the TEMP output of the MAX6175BASA/V+T calibrated and what is its accuracy?
The TEMP output of the MAX6175BASA/V+T is factory-calibrated to deliver 630mV at +25°C with a slope of 2.1mV/°C across –40°C to +125°C. Absolute accuracy depends on system-level calibration; however, relative linearity is ±0.5% over temperature, supporting ±1.5°C die temperature estimation after single-point calibration at room temperature.
Can the MAX6175BASA/V+T be used directly from a 24V automotive battery rail?
Yes, the MAX6175BASA/V+T supports input voltages from 7.0V to 40V, making it compatible with raw 24V automotive battery rails (typically 9V–32V). Its internal overvoltage protection and 40V absolute maximum rating allow direct connection without pre-regulation - simplifying power architecture in ECUs and body control modules.
What is the purpose of the TRIM pin on the MAX6175BASA/V+T and how is it implemented?
The TRIM pin on the MAX6175BASA/V+T enables ±6% adjustment of the 5.0V output using an external resistive divider between OUT and GND. Connecting a 50kΩ potentiometer (e.g., MAX5436) with its wiper to TRIM allows precise factory or field calibration. The TRIM function adds no significant error to the reference path and maintains full tempco and noise specifications across the adjusted range.
MAX6175BASA/V+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:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6175BASA/V+T FAQ
1.How can I place an order for MAX6175BASA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6175BASA/V+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 MAX6175BASA/V+T reliable?
The price and inventory of MAX6175BASA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6175BASA/V+T is usually 5 days.
3.What payment methods are accepted for MAX6175BASA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6175BASA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6175BASA/V+T?
MAX6175BASA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6175BASA/V+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 MAX6175BASA/V+T?
For technical support, including MAX6175BASA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6175BASA/V+T requirements.
6.How does Aetrix verify that MAX6175BASA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX6175BASA/V+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 MAX6175BASA/V+T meets industry standards.
7.What is the process for return or replacement of MAX6175BASA/V+T?
All MAX6175BASA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6175BASA/V+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 MAX6175BASA/V+T part is unused and in its original packaging.
Return procedure for MAX6175BASA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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