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Analog Devices Inc./Maxim Integrated MAX6173BASA+T
- Part No.:
- MAX6173BASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6173BASA+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,635
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Product details
Overview
MAX6173BASA+T from Maxim Integrated is a high-precision, low-noise 2.5V voltage reference with integrated temperature sensor output (TEMP), ±0.1% initial accuracy, 3ppm/°C max temperature coefficient, and 3.8µVP-P (0.1Hz–10Hz) noise-designed for high-resolution ADC/DAC biasing in automotive sensor modules and industrial data acquisition systems.
For engineers reviewing the MAX6173BASA+T datasheet, MAX6173BASA+T pinout, MAX6173BASA+T application, or MAX6173BASA+T 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 MAX6173BASA+T uses curvature-corrected bandgap architecture with 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 output referenced to die temperature, enabling on-chip thermal monitoring without external sensors.
It features a TRIM terminal allowing ±6% output adjustment via resistive divider, operates from (VOUT + 2V) to +40V input, draws only 320µA typical supply current, and remains stable with capacitive loads up to 100µF-eliminating mandatory output bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal, ±0.1% initial accuracy (2.4975V to 2.5025V at +25°C) - ensures ≤1 LSB error in 12-bit systems across full temp range |
| Tempco (TCVOUT) | 3ppm/°C max (–40°C to +125°C) - enables <±0.3mV drift over full automotive range |
| Output Noise | 3.8µVP-P (0.1Hz–10Hz), 6.8µVRMS (10Hz–1kHz) - supports 18-bit+ SAR and delta-sigma ADCs |
| Supply Current | 320µA typical, 450µA max at +25°C - extends battery life in portable instrumentation |
| Load Drive | Sources 30mA / sinks 2mA - directly drives ADC reference inputs and small buffers without external op-amps |
| TEMP Output | 570mV at +25°C, 1.9mV/°C slope - calibrated die-temperature sensing with ±2°C accuracy after system calibration |
| Input Range | +4.5V to +40V - accommodates wide-input industrial supplies and unregulated automotive rails |
Pinout & Package
MAX6173BASA+T is housed in an 8-pin SO (Small Outline) package (package code S8+4, outline 21-0041), RoHS-compliant, with exposed pad not connected. Pin 1 and Pin 8 are internally connected (I.C.) and must remain unconnected on PCB; Pin 7 is no-connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power supply input | Accepts 4.5V–40V; requires local 0.1µF ceramic decoupling for optimal line transient rejection |
| TEMP (Pin 3) | Digital-temperature-proportional analog output | Provides 1.9mV/°C voltage vs. die temperature; high-impedance output - buffer required for ADC sampling |
| GND (Pin 4) | Analog ground reference | Must be star-connected to minimize ground bounce affecting reference stability and TEMP accuracy |
| TRIM (Pin 5) | Voltage-adjustment interface | Accepts 0V to VOUT; enables ±6% fine-tuning of output using external resistive divider (e.g., MAX5436 potentiometer) |
| OUT (Pin 6) | Precision reference voltage output | 2.5V ±0.1%; stable with 0–100µF capacitive load - no mandatory bypass capacitor needed |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap core | Reduces parabolic TCVOUT error, achieving 3ppm/°C max over –40°C to +125°C without external compensation |
| Integrated TEMP output | Eliminates need for discrete temperature sensor in space-constrained modules - saves BOM cost and layout area |
| No-output-capacitor stability | Enables ultra-compact designs (e.g., sensor nodes) where board area is constrained and eliminates capacitor aging/reliability concerns |
| Short-circuit protection | Limits OUT-to-GND fault current to 60mA and OUT-to-IN to 3mA - prevents latch-up and enables robust field operation |
| AEC-Q100 qualified | Validated for automotive applications per Grade 0 (–40°C to +125°C), supporting under-hood and ADAS subsystem deployment |
Applications
| Automotive Cabin Temperature Monitoring | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Real-time cabin air temperature measurement in HVAC control units using a single-chip solution. IC Role / Device Role / Timing Role: Provides both precision 2.5V reference for 16-bit ADC and calibrated die-temperature signal for ambient estimation. Use Value: Reduces component count by replacing separate reference IC + NTC thermistor + signal conditioning circuitry. | Use Scenario: High-accuracy voltage/current input conditioning in modular I/O cards for factory automation. IC Role / Device Role / Timing Role: Supplies stable reference to multiple SAR ADCs while enabling on-board thermal derating via TEMP pin feedback. Use Value: Maintains <±0.01% gain stability over temperature, eliminating recalibration cycles during extended runtime. |
| Portable Battery-Powered DVM | Medical Patient Monitor Front-End |
Use Scenario: Handheld digital multimeter requiring sub-mV absolute accuracy and multi-decade battery life. IC Role / Device Role / Timing Role: Low-noise 2.5V reference for auto-ranging ADC; TRIM pin enables factory calibration to offset PCB trace resistance errors. Use Value: 320µA quiescent current extends 9V alkaline battery life to >200 hours in active measurement mode. | Use Scenario: ECG/SpO₂ front-end where reference stability directly impacts diagnostic waveform fidelity. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC; TEMP output monitors ASIC junction temperature to trigger thermal throttling. Use Value: 3.8µVP-P low-frequency noise ensures clean baseline for microvolt-level biopotential signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | 0.05% initial accuracy, 3ppm/°C tempco, but no TEMP output; 3.8µVP-P noise; SO-8 package | Lacks integrated temperature sensing - requires external sensor for thermal monitoring | Select when highest initial accuracy is prioritized and TEMP functionality is unnecessary |
| ADR4525BRZ | 0.02% initial accuracy, 2ppm/°C tempco, no TEMP output; 3.5µVP-P noise; SO-8 package | Higher cost, tighter spec, but no on-die thermal transducer - unsuitable for self-thermal-aware designs | Choose for metrology-grade systems where reference drift dominates error budget and thermal sensing is handled separately |
Compared with REF5025IDR and ADR4525BRZ, MAX6173BASA+T uniquely integrates a calibrated temperature transducer while maintaining competitive noise and stability - making it optimal for compact, thermally aware analog systems where BOM reduction and die-temperature correlation are design requirements.
Availability
MAX6173BASA+T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial data loggers, and portable test equipment requiring stable component supply, long-term parametric consistency, and AEC-Q100 compliance.
Supply support for MAX6173BASA+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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6173–MAX6177 family was engineered specifically for high-accuracy data conversion systems needing simultaneous precision voltage referencing and on-die thermal telemetry - targeting automotive ADAS, industrial IoT nodes, and portable instrumentation.
FAQ
What is the guaranteed initial accuracy of MAX6173BASA+T?
The MAX6173BASA+T guarantees ±0.1% initial output voltage accuracy at +25°C, corresponding to a 2.4975V–2.5025V range for its 2.5V nominal output. This specification is tested and binned during production, and applies across the full –40°C to +125°C operating temperature range per the datasheet's MAX6173B grade definition.
Does MAX6173BASA+T require an output bypass capacitor for stability?
No, the MAX6173BASA+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 a common source of board-area consumption and reliability risk in space-constrained applications such as automotive sensor clusters and handheld instruments.
How is the TEMP output of MAX6173BASA+T calibrated and what is its sensitivity?
The TEMP output of MAX6173BASA+T provides a voltage proportional to die temperature with a nominal sensitivity of 1.9mV/°C and a typical output of 570mV at +25°C. The slope is trimmed at wafer test; absolute accuracy depends on system-level calibration due to self-heating effects, but the linearity supports ±2°C measurement resolution after one-point calibration.
Can MAX6173BASA+T drive a 10kΩ load while maintaining specified accuracy?
Yes, the MAX6173BASA+T can drive a 10kΩ load (250µA sink/source) while maintaining full-spec accuracy. Its load regulation is specified at ±2ppm/mA for sourcing 0–10mA, translating to just ±0.005mV error - well within its ±2.5mV total accuracy window. No external buffer is needed for standard ADC reference inputs.
Is MAX6173BASA+T qualified for automotive applications?
Yes, MAX6173BASA+T is AEC-Q100 qualified for automotive use (Grade 0: –40°C to +125°C). It meets stress testing requirements for temperature cycling, humidity, and ESD, and is manufactured in certified automotive-grade process flows - making it suitable for under-hood engine control, body electronics, and ADAS subsystems.
MAX6173BASA+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:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°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
MAX6173BASA+T FAQ
1.How can I place an order for MAX6173BASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6173BASA+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 MAX6173BASA+T reliable?
The price and inventory of MAX6173BASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6173BASA+T is usually 5 days.
3.What payment methods are accepted for MAX6173BASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6173BASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6173BASA+T?
MAX6173BASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6173BASA+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 MAX6173BASA+T?
For technical support, including MAX6173BASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6173BASA+T requirements.
6.How does Aetrix verify that MAX6173BASA+T is sourced from the original manufacturer or authorized distributors?
All MAX6173BASA+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 MAX6173BASA+T meets industry standards.
7.What is the process for return or replacement of MAX6173BASA+T?
All MAX6173BASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6173BASA+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 MAX6173BASA+T part is unused and in its original packaging.
Return procedure for MAX6173BASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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