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Analog Devices Inc./Maxim Integrated MAX6143BASA50+
- Part No.:
- MAX6143BASA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143BASA50+.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:130
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Product details
Overview
MAX6143BASA50+ from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature sensor output, delivering a factory-trimmed +5.0V output, ±0.10% initial accuracy, 10ppm/°C max temperature coefficient over -40°C to +125°C, and 9µVP-P (0.1Hz–10Hz) noise. It serves as a stable reference for 16-bit+ ADCs/DACs in automotive sensor modules and precision power monitoring systems.
For engineers reviewing the MAX6143BASA50+ datasheet, MAX6143BASA50+ pinout, MAX6143BASA50+ application, or MAX6143BASA50+ equivalent, key selection criteria include its 5.0V output tolerance, TRIM-adjustable capability, TEMP output linearity (2.1mV/°C), shutdown current of 0.01µA, and stability without output bypass capacitors up to 100µF.
Technical Context
The MAX6143BASA50+ uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve low drift and high DC accuracy. Its TEMP terminal provides a linear analog voltage proportional to die temperature (630mV at +25°C, 2.1mV/°C), enabling dual-function operation as both reference and on-die thermal monitor.
It features an active-low SHDN input that reduces quiescent current to 0.01µA, a TRIM terminal supporting ±6% output adjustment via external resistive divider, and operates from (VOUT + 2V) to +40V input - requiring ≥7V minimum supply for 5.0V output. No output capacitor is needed for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.000V nominal, guaranteed 4.995V–5.005V at +25°C (±0.10% initial accuracy) |
| Temp Coefficient | 10ppm/°C max over -40°C to +125°C - supports ≤1 LSB error in 16-bit systems across full automotive range |
| Noise (0.1–10Hz) | 9µVP-P typical - enables high-resolution measurement without post-filtering |
| Supply Current | 700µA max over temperature - allows battery-powered operation with minimal self-heating impact |
| Shutdown Current | 0.01µA typical - extends shelf life and enables ultra-low-power wake-on-event designs |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - provides calibrated die temperature sensing without external components |
| Load Drive | Sources up to 30mA, sinks up to 2mA - directly drives ADC reference inputs and small logic loads |
Pinout & Package
MAX6143BASA50+ is housed in an 8-pin SOIC (SO) package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012 compliant. Pins 1 and 8 are internally connected and must remain unconnected externally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power supply input | Accepts 7V to +40V; supplies internal bandgap core and output buffer |
| TEMP (Pin 3) | Digital die temperature transducer output | Provides 630mV @ +25°C, 2.1mV/°C linear response; high-impedance, requires no load |
| GND (Pin 4) | Analog ground reference | Common return for IN, OUT, SHDN, TRIM, and TEMP; must be low-impedance |
| TRIM (Pin 5) | Output voltage adjustment node | Connects to center tap of resistive divider between OUT and GND for ±6% fine-tuning |
| OUT (Pin 6) | Precision reference voltage output | +5.0V output capable of sourcing 30mA; stable with 0–100µF capacitive loads |
| SHDN (Pin 7) | Active-low shutdown control | Logic-low (<0.8V) disables output and reduces supply current to 0.01µA |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed +5.0V output | Eliminates need for external calibration in production test; meets ±0.10% spec without user trimming |
| Integrated die temperature sensor | Enables real-time thermal compensation of system gain/offset without adding discrete sensors or ADC channels |
| No output capacitor required | Saves PCB area and BOM cost; avoids capacitor aging, ESR drift, and layout sensitivity in space-constrained modules |
| Wide input voltage range | Supports direct connection to unregulated 12V/24V automotive rails or industrial supplies without pre-regulation |
| Low 0.01µA shutdown current | Permits use in always-on monitoring nodes with multi-year battery life (e.g., telematics event loggers) |
Applications
| Automotive Battery Monitoring | Industrial Data Acquisition |
|---|---|
Use Scenario: Real-time 12V/24V battery voltage and temperature tracking in vehicle ECUs. IC Role / Device Role / Timing Role: Provides stable 5.0V reference for ADC measuring battery voltage and reads die temperature via TEMP pin for thermal derating. Use Value: Single-component solution replaces separate reference IC + NTC thermistor, reducing component count and calibration complexity. | Use Scenario: High-accuracy analog input conditioning in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Supplies low-drift reference to 16-bit SAR ADCs and monitors local ambient temperature via TEMP output. Use Value: 10ppm/°C TC ensures <0.5 LSB error over -40°C to +85°C operating range without software correction. |
| Medical Sensor Signal Chain | Test & Measurement Equipment |
Use Scenario: Precision front-end for portable blood glucose or ECG analog signal paths. IC Role / Device Role / Timing Role: Delivers clean 5.0V reference to instrumentation amplifiers and ADCs; TEMP output validates sensor die thermal stability. Use Value: 9µVP-P low-frequency noise prevents baseline wander in sub-Hz biomedical measurements. | Use Scenario: Calibration-grade voltage reference in handheld multimeters and source-measure units. IC Role / Device Role / Timing Role: Serves as primary reference for auto-ranging DACs and internal self-test circuits; TRIM enables end-of-line accuracy adjustment. Use Value: ±0.10% initial accuracy and 50ppm long-term stability (1000h) support Class II metrology compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0V output, 3ppm/°C max TC, 0.05% initial accuracy, 5.5µVP-P noise, SO-8 package | Higher accuracy and lower noise; requires 0.1µF output capacitor for stability | Select when tighter TC and lower noise justify added capacitor and higher cost |
| ADR4550BRZ | 5.0V output, 3ppm/°C max TC, 0.02% initial accuracy, 7.5µVP-P noise, SO-8 package | Superior initial accuracy and TC; no integrated temperature sensor; higher quiescent current (950µA) | Choose when absolute accuracy outweighs dual-function capability and power budget |
Compared with REF5050IDR and ADR4550BRZ, MAX6143BASA50+ trades minor TC and noise performance for integrated temperature sensing, zero-output-capacitor operation, and lower 700µA supply current - making it optimal for space- and power-constrained dual-role applications.
Availability
MAX6143BASA50+ is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC analog I/O, medical sensor front-ends, and portable test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6143BASA50+ 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 medical applications.
The MAX6143 family was engineered to deliver high-accuracy voltage references with integrated temperature sensing in a single SO-8 package - targeting systems needing both stable excitation and local thermal awareness without board area penalty.
FAQ
What is the guaranteed output voltage tolerance for MAX6143BASA50+ at +25°C?
The MAX6143BASA50+ guarantees an output voltage of 4.995V to 5.005V at +25°C, corresponding to ±0.10% initial accuracy. This specification is production-tested and applies across the full -40°C to +125°C operating range, with worst-case drift bounded by the 10ppm/°C temperature coefficient.
Can MAX6143BASA50+ operate without an output bypass capacitor?
Yes, MAX6143BASA50+ is internally compensated and does not require an output bypass capacitor for stability. It remains stable with capacitive loads from 0 to 100µF, simplifying layout and eliminating capacitor-related aging or ESR effects - a key advantage over many competing references.
How is the TEMP output of MAX6143BASA50+ calibrated and what is its accuracy?
The TEMP output of MAX6143BASA50+ provides 630mV at +25°C with a slope of 2.1mV/°C. While not individually calibrated per unit, this transfer function is tightly controlled during wafer sort and is consistent across the production lot, enabling reliable relative temperature monitoring and coarse absolute measurement when combined with system-level calibration.
What is the minimum input voltage required for MAX6143BASA50+ to regulate at 5.0V?
MAX6143BASA50+ requires a minimum input voltage of (VOUT + 2V) = 7.0V to maintain regulation at 5.0V output. This dropout headroom ensures proper biasing of internal circuitry across temperature and load conditions, as verified in the datasheet's dropout voltage vs. source current curves.
Does MAX6143BASA50+ support output voltage trimming, and how is it implemented?
Yes, MAX6143BASA50+ supports ±6% output voltage trimming via the TRIM pin. Connect a resistive divider between OUT and GND, with the wiper or center tap connected to TRIM. The output adjusts linearly with TRIM voltage; no external op-amps or DACs are needed - enabling field calibration or production binning without redesign.
MAX6143BASA50+ 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:
- ±0.1%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143BASA50+ FAQ
1.How can I place an order for MAX6143BASA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143BASA50+ 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 MAX6143BASA50+ reliable?
The price and inventory of MAX6143BASA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143BASA50+ is usually 5 days.
3.What payment methods are accepted for MAX6143BASA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143BASA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143BASA50+?
MAX6143BASA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143BASA50+ 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 MAX6143BASA50+?
For technical support, including MAX6143BASA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143BASA50+ requirements.
6.How does Aetrix verify that MAX6143BASA50+ is sourced from the original manufacturer or authorized distributors?
All MAX6143BASA50+ 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 MAX6143BASA50+ meets industry standards.
7.What is the process for return or replacement of MAX6143BASA50+?
All MAX6143BASA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143BASA50+, 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 MAX6143BASA50+ part is unused and in its original packaging.
Return procedure for MAX6143BASA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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