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Analog Devices Inc./Maxim Integrated MAX6143BASA50+T
- Part No.:
- MAX6143BASA50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143BASA50+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,479
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Product details
Overview
MAX6143BASA50+T from Maxim Integrated is a high-precision, low-noise voltage reference with integrated die-temperature sensor output (TEMP), 5.0V nominal output, ±0.10% initial accuracy, 10ppm/°C max temperature coefficient over –40°C to +125°C, and active-low shutdown (SHDN) reducing supply current to 0.01µA. It serves as a stable reference for 16-bit+ ADCs/DACs in automotive and industrial data acquisition systems.
For engineers reviewing the MAX6143BASA50+T datasheet, MAX6143BASA50+T pinout, MAX6143BASA50+T application, or MAX6143BASA50+T equivalent, key selection considerations include its 5.0V output tolerance, TEMP output linearity (2.1mV/°C), TRIM input adjustability (±6%), no-output-capacitor stability, and SO-8 automotive-grade packaging.
Technical Context
The MAX6143BASA50+T employs bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve low drift and high initial accuracy. Its TEMP output provides a linear voltage proportional to junction temperature (630mV at +25°C, 2.1mV/°C), enabling on-chip thermal monitoring without external sensors.
It features a dedicated TRIM terminal allowing ±6% output adjustment via external resistive divider, and an active-low SHDN pin that disables regulation while maintaining <5µA shutdown current across –40°C to +125°C. Input voltage range spans (VOUT + 2V) to +40V - i.e., 7V to 40V for the 5.0V variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.10% (4.995V–5.005V at +25°C, no load) |
| Tempco (–40°C to +125°C) | 10ppm/°C max - ensures ≤0.5mV total drift over full automotive range |
| Noise (0.1Hz–10Hz) | 9µVP-P typical - supports 18-bit ADC resolution without added filtering |
| Supply Current | 700µA max at +125°C - enables low-power operation in battery-backed systems |
| Load Drive | Sources up to 30mA / sinks up to 2mA - sufficient for driving ADC reference inputs and small buffers |
| Shutdown Current | 0.01µA typical - extends system standby time by orders of magnitude |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - calibrated die-temperature sensing with ±1.5°C accuracy |
Pinout & Package
MAX6143BASA50+T is housed in an 8-pin SOIC (SO-8) package with 1.27mm pitch, compliant with JEDEC MS-012, and rated for –40°C to +125°C operation. 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; dropout voltage ≤1.5V at 30mA load |
| TEMP (Pin 3) | Digital-temperature transducer output | Provides 630mV @ +25°C, 2.1mV/°C - requires high-impedance readout (≥1MΩ) |
| GND (Pin 4) | Analog ground reference | Common return for IN, OUT, SHDN, TRIM, and TEMP; separate from digital ground recommended |
| TRIM (Pin 5) | Output voltage adjustment node | Accepts 0–5V divider voltage; enables ±6% fine-tuning of VOUT |
| OUT (Pin 6) | Precision reference voltage output | 5.0V ±0.10%; stable with 0–100µF capacitive loads; no bypass capacitor required |
| SHDN (Pin 7) | Active-low enable control | Logic-low (<0.8V) enters shutdown; logic-high (>2.0V) enables regulation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensor | Linear TEMP output (630mV @ +25°C, 2.1mV/°C) eliminates need for external thermal IC or NTC network |
| Trim-adjustable output | ±6% output tuning via external resistor divider on TRIM pin - enables calibration after PCB assembly |
| No-output-capacitor stability | Stable with 0–100µF output capacitance - reduces BOM count and board space in space-constrained modules |
| Wide input voltage range | Operates from (VOUT + 2V) to +40V - supports direct connection to 12V/24V automotive rails without pre-regulation |
| Automotive-grade qualification | Specified and tested over –40°C to +125°C ambient - suitable for engine control, ADAS, and under-hood applications |
Applications
| High-Resolution Data Acquisition | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: 16-bit SAR ADC digitizing analog sensor signals (e.g., oxygen, pressure, throttle position) in real-time engine monitoring. IC Role / Device Role / Timing Role: Provides ultra-stable 5.0V reference for ADC conversion, with TEMP output used for on-die thermal compensation of sensor gain/offset. Use Value: 10ppm/°C tempco ensures <0.8 LSB error over –40°C to +125°C, meeting ASIL-B functional safety requirements for signal chain accuracy. |
Use Scenario: Reference voltage source for fuel injector driver feedback, knock sensor interface, and onboard diagnostics (OBD-II) voltage monitoring. IC Role / Device Role / Timing Role: Supplies precision 5.0V reference to analog front-end circuits; SHDN pin synchronizes with ECU sleep/wake cycles. Use Value: 0.01µA shutdown current minimizes parasitic drain during vehicle off-state, extending battery life beyond ISO 16750-2 quiescent current limits. |
| Portable Test Equipment | Industrial PLC Analog I/O Module |
Use Scenario: Handheld multimeter or calibrator requiring traceable 5.0V reference and internal temperature logging. IC Role / Device Role / Timing Role: Delivers metrology-grade reference voltage while TEMP output feeds microcontroller ADC for self-calibration and environmental reporting. Use Value: ±0.10% initial accuracy and 50ppm long-term stability (1000h) reduce annual recalibration frequency and field service costs. |
Use Scenario: Modular analog input card measuring 4–20mA loop signals, thermocouples, and RTDs in factory automation cabinets. IC Role / Device Role / Timing Role: Serves as shared reference for multiple 24-bit ΣΔ ADCs; TRIM pin allows channel-to-channel matching during module production test. Use Value: TRIM adjustability enables <±0.02% inter-channel reference matching without laser trimming or discrete DACs. |
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, 3ppm/°C max, ±0.05% initial accuracy, no TEMP output, SO-8 | Lacks integrated temperature sensing; higher accuracy but no on-die thermal monitoring capability | Select when absolute reference stability outweighs thermal telemetry needs; not drop-in due to missing TEMP functionality |
| ADR4550BRZ | 5.0V, 3ppm/°C max, ±0.02% initial accuracy, no TRIM or TEMP pins, SO-8 | No TRIM or TEMP terminals; superior initial accuracy but zero post-production adjustability or thermal feedback | Choose for metrology-grade fixed references where calibration occurs off-board; incompatible pinout for MAX6143BASA50+T PCB layout |
Compared with REF5050IDR and ADR4550BRZ, MAX6143BASA50+T trades minor initial accuracy degradation (±0.10% vs. ±0.02–0.05%) for unique dual functionality: factory-trimmable output and calibrated die-temperature sensing - critical for closed-loop thermal compensation in harsh-environment systems.
Availability
MAX6143BASA50+T is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog I/O modules, and portable test equipment requiring stable component supply with guaranteed long-term availability and AEC-Q100-aligned manufacturing traceability.
Supply support for MAX6143BASA50+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 applications in automotive, industrial, communications, and computing markets.
The MAX6143 family was engineered specifically for high-accuracy, multi-function voltage reference needs in automotive and industrial environments - integrating precision bandgap reference, temperature telemetry, and trim capability into a single SO-8 package.
FAQ
What is the maximum input voltage for MAX6143BASA50+T?
The MAX6143BASA50+T accepts an input voltage from (VOUT + 2V) to +40V - i.e., 7V to 40V for the 5.0V variant. Absolute maximum rating is +42V on IN relative to GND. Exceeding this may cause permanent damage. Operation above 40V is not specified or guaranteed.
Does MAX6143BASA50+T require an output bypass capacitor?
No, MAX6143BASA50+T does not require an output bypass capacitor for stability and is explicitly characterized as stable with capacitive loads from 0 to 100µF. This eliminates a common BOM item and simplifies layout in space-constrained applications such as automotive sensor modules.
How accurate is the TEMP output of MAX6143BASA50+T?
The TEMP output of MAX6143BASA50+T is calibrated to 630mV at +25°C with a slope of 2.1mV/°C. Over –40°C to +125°C, it maintains linearity within ±1.5°C equivalent error when read with a high-impedance ADC. Self-heating effects are minimal below 1mA load.
Can MAX6143BASA50+T be used in place of MAX6143AASA50+T?
Yes, MAX6143BASA50+T is functionally pin-compatible with MAX6143AASA50+T but offers relaxed specifications: 10ppm/°C max tempco (vs. 3ppm/°C) and ±0.10% initial accuracy (vs. ±0.06%). It is a cost-optimized alternative where tighter drift and accuracy are not required - no PCB changes needed.
What is the purpose of the TRIM pin on MAX6143BASA50+T?
The TRIM pin on MAX6143BASA50+T allows ±6% adjustment of the 5.0V output using an external resistive divider between OUT, TRIM, and GND. This enables post-assembly calibration to compensate for PCB-level tolerances, solder thermal shift, or system-level gain errors - without requiring laser trimming or external DACs.
MAX6143BASA50+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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143BASA50+T FAQ
1.How can I place an order for MAX6143BASA50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143BASA50+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 MAX6143BASA50+T reliable?
The price and inventory of MAX6143BASA50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143BASA50+T is usually 5 days.
3.What payment methods are accepted for MAX6143BASA50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143BASA50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143BASA50+T?
MAX6143BASA50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143BASA50+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 MAX6143BASA50+T?
For technical support, including MAX6143BASA50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143BASA50+T requirements.
6.How does Aetrix verify that MAX6143BASA50+T is sourced from the original manufacturer or authorized distributors?
All MAX6143BASA50+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 MAX6143BASA50+T meets industry standards.
7.What is the process for return or replacement of MAX6143BASA50+T?
All MAX6143BASA50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143BASA50+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 MAX6143BASA50+T part is unused and in its original packaging.
Return procedure for MAX6143BASA50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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