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Analog Devices Inc./Maxim Integrated MAX6143BASA41+
- Part No.:
- MAX6143BASA41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6143BASA41+.pdf
- Description:
- IC VREF SERIES 4.096V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,133
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Product details
Overview
The MAX6143BASA41+ from Maxim Integrated is a high-precision, low-noise voltage reference with integrated temperature-sensing output (TEMP), delivering a factory-trimmed +4.096V reference voltage, ±0.10% initial accuracy, 10ppm/°C max temperature coefficient over –40°C to +125°C, and 7µVP-P (0.1Hz–10Hz) noise - ideal for 16-bit ADC/DAC systems requiring stable excitation in automotive and industrial instrumentation.
For engineers reviewing the MAX6143BASA41+ datasheet, MAX6143BASA41+ pinout, MAX6143BASA41+ application, or MAX6143BASA41+ equivalent, key selection considerations include its 8-pin SO package, TRIM-adjustable output, active-low SHDN (0.01µA shutdown current), TEMP output linearity (2.1mV/°C), and stability without output bypass capacitors up to 100µF.
Technical Context
The MAX6143BASA41+ uses bandgap-based architecture with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve tight thermal stability. Its TEMP terminal provides a linear voltage proportional to die temperature (630mV at +25°C, 2.1mV/°C), enabling on-chip thermal monitoring without external sensors.
It supports trimming via a resistive divider between OUT–TRIM–GND (±6% adjustment range), operates from (VOUT + 2V) to +40V input, and delivers 30mA sourcing capability while maintaining load regulation of ≤15ppm/mA (sourcing, –40°C to +125°C) and ≤900ppm/mA (sinking).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +4.096V nominal, with ±0.10% initial tolerance (4.0919V to 4.1001V at +25°C) |
| Tempco | 10ppm/°C max over –40°C to +125°C - ensures ≤0.83mV drift across full range |
| Noise (0.1Hz–10Hz) | 7µVP-P typical - supports <18-bit effective resolution in precision data acquisition |
| Supply Current | 650µA max at –40°C to +125°C; 320–500µA typical at +25°C |
| Shutdown Current | 0.01µA typical - enables µA-level power budgeting in battery-backed systems |
| TEMP Output | 630mV at +25°C, 2.1mV/°C slope - calibrated linear transducer for die temperature sensing |
| Load Drive | Sources up to 30mA; sinks up to 2mA - sufficient for driving ADC reference inputs and small buffers |
Pinout & Package
MAX6143BASA41+ is housed in an 8-pin SO (Small Outline) package per JEDEC MS-012, 150-mil body width, with pins 1 and 8 internally connected and not to be externally wired.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | I.C. | Internally connected - must remain unconnected on PCB |
| 2 | IN | Positive supply input; accepts 6.1V to +40V - supports wide-input industrial rails |
| 3 | TEMP | Temperature-proportional analog output; 630mV @ +25°C, 2.1mV/°C - enables self-contained thermal diagnostics |
| 4 | GND | Analog ground reference - requires low-impedance connection to system AGND plane |
| 5 | TRIM | Voltage-adjust input; accepts 0 to VOUT - enables ±6% fine-tuning via external resistor divider |
| 6 | OUT | Stable +4.096V reference output - stable with 0–100µF capacitive loads; no bypass cap required |
| 7 | SHDN | Active-low shutdown control; VIH ≥2.0V, VIL ≤0.8V - reduces supply current to 0.01µA when pulled low |
Key Features
| Feature | Design Value |
|---|---|
| Bandgap core with curvature correction | Enables 10ppm/°C tempco over –40°C to +125°C without external compensation |
| Integrated TEMP output | Provides factory-calibrated 2.1mV/°C analog temperature signal - eliminates need for discrete sensor |
| TRIM-adjustable output | Supports ±6% output tuning via simple resistor network - accommodates system-level calibration |
| No output capacitor required | Guaranteed stability with 0–100µF capacitive loads - saves board space and BOM cost |
| Wide input range (VOUT + 2V to +40V) | Operates directly from 12V/24V industrial buses without pre-regulation |
Applications
| High-Resolution Data Acquisition | Automotive Engine Control Units |
|---|---|
Use Scenario: 16-bit SAR ADC in portable test equipment measuring thermocouple or strain-gauge signals. IC Role / Device Role / Timing Role: Primary voltage reference and on-die temperature monitor for reference stability compensation. Use Value: 4.096V output matches common 16-bit full-scale codes (216 = 65536); 7µVP-P noise ensures <0.1LSB noise floor. | Use Scenario: Reference for fuel-injection timing DAC and ECU internal temperature monitoring. IC Role / Device Role / Timing Role: Dual-role reference + sensor - supplies precise DAC reference while reporting die temperature for thermal derating. Use Value: AEC-Q100 qualified operating range (–40°C to +125°C) and 10ppm/°C tempco ensure timing accuracy across engine thermal cycles. |
| Industrial PLC Analog Input Modules | Battery-Powered Portable Meters |
Use Scenario: Multi-channel 4–20mA loop-powered transmitter with local ADC and diagnostics. IC Role / Device Role / Timing Role: Stable reference for current-loop DAC and TEMP-based ambient sensor calibration. Use Value: 30mA sourcing drives multiple op-amps and references; TRIM allows field calibration against master standard. | Use Scenario: Handheld multimeter with auto-ranging and battery-life optimization. IC Role / Device Role / Timing Role: Low-power reference with shutdown mode and integrated temperature readout for battery thermal management. Use Value: 0.01µA shutdown current extends shelf life; TEMP output enables battery temperature compensation during measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max, 0.05% initial accuracy, SO-8; higher precision but no TEMP output | Lacks integrated temperature sensor - requires external IC for thermal monitoring | Select when ultra-low tempco (<3ppm/°C) is mandatory and TEMP functionality is handled separately |
| ADR4540BRZ | 4.096V, 3ppm/°C max, 0.02% initial accuracy, SO-8; includes trim pin but no TEMP output | No die-temperature sensing - limits self-diagnostic capability in harsh environments | Choose for metrology-grade accuracy where sensor integration is unnecessary and layout space permits dual components |
Compared with REF5040IDR and ADR4540BRZ, the MAX6143BASA41+ trades minor initial accuracy and tempco for unique dual-function integration - combining precision reference and linear temperature transducer in one SO-8 device, reducing component count and interconnect error in space-constrained automotive and industrial designs.
Availability
MAX6143BASA41+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, automotive engine control units, and industrial PLC analog input modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6143BASA41+ 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 communications applications.
The MAX6143 series was engineered to deliver high-accuracy, low-drift voltage references with integrated temperature sensing - targeting applications where reference stability, thermal awareness, and board-space efficiency are jointly critical.
FAQ
What is the guaranteed initial accuracy of the MAX6143BASA41+?
The MAX6143BASA41+ has a guaranteed initial accuracy of ±0.10% at +25°C, corresponding to an output voltage range of 4.0919V to 4.1001V. This specification is production-tested and applies across the full –40°C to +125°C operating temperature range per the datasheet's ordering guide and electrical characteristics table for MAX6143_41 variants.
Does the MAX6143BASA41+ require an output bypass capacitor for stability?
No, the MAX6143BASA41+ does not require an output bypass capacitor for stability. It is explicitly characterized as stable with capacitive loads from 0 to 100µF. This eliminates the need for external output capacitance in most applications, reducing bill-of-materials cost and PCB area - a key advantage confirmed in the "Applications Information" and "Typical Operating Circuit" sections of the MAX6143 datasheet.
How is the TEMP output of the MAX6143BASA41+ calibrated and used?
The TEMP output of the MAX6143BASA41+ provides a linear voltage proportional to die temperature: 630mV at +25°C with a slope of 2.1mV/°C. It is factory-calibrated and requires no external components. To use it, connect TEMP to an ADC input and apply the formula TDIE(°C) = (VTEMP – 630mV) / 2.1mV/°C. Self-heating effects are minimal under typical load conditions, and the MAX6143BASA41+ datasheet confirms this behavior in the "TEMP Output" subsection.
Can the output voltage of the MAX6143BASA41+ be adjusted, and if so, how?
Yes, the MAX6143BASA41+ output voltage can be adjusted using the TRIM pin. Connect a resistive divider between OUT, TRIM, and GND - for example, a 50kΩ potentiometer with wiper to TRIM. The output changes by ±6% (±0.246V) around 4.096V, calculated as ∆VOUT = 2 × (VTRIM – VOUT/2) × k, where k ≈ ±6%. This trimming function is documented in the "Trimming the Output Voltage" section of the MAX6143 datasheet.
What is the maximum input voltage the MAX6143BASA41+ can accept?
The MAX6143BASA41+ accepts a supply voltage from (VOUT + 2V) up to +40V, meaning its minimum valid input is 6.1V (4.096V + 2V) and absolute maximum is +40V. This wide input range is specified in the "Absolute Maximum Ratings" and "Electrical Characteristics-MAX6143_41" tables, and enables direct operation from unregulated 12V or 24V industrial rails without pre-regulation.
MAX6143BASA41+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 30 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 7µVp-p
- Noise - 10Hz to 10kHz:
- 11.5µVrms
- Voltage - Input:
- 6.1V ~ 40V
- Current - Supply:
- 650µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6143BASA41+ FAQ
1.How can I place an order for MAX6143BASA41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6143BASA41+ 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 MAX6143BASA41+ reliable?
The price and inventory of MAX6143BASA41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6143BASA41+ is usually 5 days.
3.What payment methods are accepted for MAX6143BASA41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6143BASA41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6143BASA41+?
MAX6143BASA41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6143BASA41+ 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 MAX6143BASA41+?
For technical support, including MAX6143BASA41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6143BASA41+ requirements.
6.How does Aetrix verify that MAX6143BASA41+ is sourced from the original manufacturer or authorized distributors?
All MAX6143BASA41+ 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 MAX6143BASA41+ meets industry standards.
7.What is the process for return or replacement of MAX6143BASA41+?
All MAX6143BASA41+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6143BASA41+, 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 MAX6143BASA41+ part is unused and in its original packaging.
Return procedure for MAX6143BASA41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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