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Analog Devices Inc./Maxim Integrated MAX6043CAUT33-T
- Part No.:
- MAX6043CAUT33-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6043CAUT33-T.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:3,662
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Product details
Overview
MAX6043CAUT33-T from Maxim Integrated is a precision 3.3V voltage reference IC in SOT23-6 package, delivering ±0.5% initial accuracy and 65ppm/°C max temperature coefficient over –40°C to +125°C. It operates from 5.3V to 40V input, supplies up to 10mA load current, and features 5.3µVP-P (0.1Hz–10Hz) output noise-optimized for high-resolution ADC/DAC biasing in automotive sensor signal chains.
For engineers reviewing the MAX6043CAUT33-T datasheet, MAX6043CAUT33-T pinout, MAX6043CAUT33-T application, or MAX6043CAUT33-T equivalent, key selection criteria include guaranteed automotive-grade temp range, no-output-capacitor stability, low quiescent current (380–650µA), and force-sense output architecture enabling accurate remote sensing in noisy environments.
Technical Context
The MAX6043CAUT33-T implements a bandgap-based reference core with proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve stable 3.3V output across wide temperature and line variations. Its dual-output architecture separates force (OUTF) and sense (OUTS) terminals to reject PCB trace resistance errors.
It requires no external output capacitor for stability and remains functional with capacitive loads up to 100µF. Input line regulation is specified at 1.5–10ppm/V over 5.3V–40V supply range, and load regulation is ≤900ppm/mA for sourcing (0–10mA) and sinking (–0.6mA–0mA) conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V ±0.5% (3.2836V to 3.3165V at +25°C); enables direct interface with 3.3V logic and SAR ADC references. |
| Tempco | 65ppm/°C max (–40°C to +125°C); supports 12-bit accuracy without calibration in automotive ambient. |
| Supply Range | +5.3V to +40V; accommodates unregulated battery rails and industrial 24V systems with headroom margin. |
| Noise (0.1–10Hz) | 5.3µVP-P; contributes <0.5 LSB error in 16-bit 3.3V ADCs (LSB = 50.3µV). |
| Quiescent Current | 380–650µA (–40°C to +125°C); allows >10-year operation on coin-cell batteries in always-on monitoring nodes. |
| Load Drive | Sources 10mA / sinks 0.6mA; sufficient to drive ADC reference inputs, op-amp bias networks, and small DACs. |
| Stability | Stable with 0–100µF capacitive loads; eliminates need for output bypass cap-reducing BOM count and board area. |
Pinout & Package
MAX6043CAUT33-T is housed in a RoHS-compliant 6-pin SOT23 package (outline U6FH-6, land pattern 90-0175), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads optimized for automated assembly and thermal performance in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | I.C. (Internally Connected) | Not bonded; must remain unconnected-no external routing or pull-up/pull-down allowed. |
| 2 | GND | Analog ground reference; requires low-impedance connection to system AGND plane for noise immunity. |
| 4 | IN | Positive supply input; accepts 5.3V–40V; decoupling with 0.1µF ceramic near pin improves line-transient rejection. |
| 5 | OUTF | Force output; drives load directly; connect to OUTS via shortest possible trace to enable Kelvin sensing. |
| 6 | OUTS | Sense input; returns feedback to internal error amplifier; connects to load's reference node to cancel trace IR drop. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output architecture | Eliminates voltage drop error from PCB traces or connectors-critical for remote sensor front-ends and modular systems. |
| No-output-capacitor stability | Reduces bill-of-materials cost and layout area; avoids capacitor aging, ESR drift, and microphonic effects in vibration-prone environments. |
| Automotive temperature range | –40°C to +125°C operation qualified per AEC-Q100 stress test flow; suitable for under-hood and ADAS power domains. |
| Short-circuit protection | Limits output current to 60mA during fault; prevents thermal runaway and enables safe operation in test jigs or miswired prototypes. |
| Low 1/f noise | 5.3µVP-P (0.1–10Hz) enables high-precision DC measurements in weigh scales, medical sensors, and strain-gauge bridges. |
Applications
| Automotive Cabin Temperature Sensor | Industrial 4–20mA Transmitter |
|---|---|
Use Scenario: High-accuracy thermistor-to-digital conversion in HVAC control modules exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Provides stable 3.3V reference for 16-bit sigma-delta ADC measuring ratiometric thermistor voltage. Use Value: 65ppm/°C tempco ensures <1°C measurement error across –40°C to +85°C cabin range without software compensation. |
Use Scenario: Precision current-loop transmitter converting 0–5V process signals to 4–20mA output in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Supplies excitation voltage and reference for DAC-driven current source; referenced by both DAC and output amplifier. Use Value: Force-sense topology maintains 3.3V accuracy at remote load despite 100mΩ PCB trace resistance, eliminating gain drift. |
| Portable Digital Multimeter (DMM) | Battery Management System (BMS) Cell Monitor |
Use Scenario: Handheld DMM requiring 3.3V reference for autoranging ADC with sub-100ppm linearity over battery life. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope or SAR ADC; powers internal analog front-end bias networks. Use Value: 380–650µA quiescent current extends alkaline battery life beyond 500 hours of active use between calibrations. |
Use Scenario: Monitoring individual Li-ion cell voltages in 12S BMS where reference stability directly impacts state-of-charge accuracy. IC Role / Device Role / Timing Role: Reference for 12-bit ADC sampling cell voltage; shares same supply rail as MCU to minimize common-mode noise. Use Value: Stable 3.3V output with 150ppm thermal hysteresis ensures consistent cell voltage readings after repeated hot/cold cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3333AIDBVR | 3.3V, 30ppm/°C max, 0.1% initial accuracy, SOT23-5, 3.9V min supply | Lower tempco but narrower supply range; lacks force-sense outputs and automotive temp rating | Select when higher accuracy is needed and supply is regulated ≥3.9V; not suitable for unregulated 12V/24V rails or remote sensing. |
| ADR3433ARJZ-R7 | 3.3V, 10ppm/°C max, 0.1% initial accuracy, SOT23-6, 3.6V min supply, 4.5µVP-P noise | Superior tempco and noise, but only rated –40°C to +125°C with derated specs above +105°C; no force-sense architecture | Prefer for lab-grade instrumentation where ultimate stability matters more than automotive qualification or trace IR cancellation. |
Compared with REF3333AIDBVR and ADR3433ARJZ-R7, the MAX6043CAUT33-T trades tighter initial accuracy and lower tempco for robustness in harsh supply environments, built-in short-circuit protection, and force-sense capability-making it uniquely suited for automotive and industrial field devices where reliability and layout flexibility outweigh marginal spec improvements.
Availability
MAX6043CAUT33-T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial 4–20mA transmitters, portable test equipment, and battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6043CAUT33-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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6043 series was developed specifically for high-accuracy voltage referencing in space-constrained, high-reliability systems-emphasizing low noise, wide supply tolerance, and automotive-grade thermal stability without external components.
FAQ
What is the maximum input voltage for MAX6043CAUT33-T?
The MAX6043CAUT33-T supports an absolute maximum input voltage of +42V, with recommended operating range from +5.3V to +40V. Operation above +40V risks exceeding absolute maximum ratings and may cause permanent damage. The device's line regulation is characterized from +5.3V to +40V, ensuring stable 3.3V output across this full range.
Does MAX6043CAUT33-T require an output bypass capacitor?
No, the MAX6043CAUT33-T does not require an output bypass capacitor for stability and is explicitly designed to operate stably with capacitive loads from 0 to 100µF. This eliminates a common BOM item and simplifies layout-especially valuable in space-constrained applications like automotive ECUs and handheld instruments.
What is the purpose of the OUTF and OUTS pins on MAX6043CAUT33-T?
OUTF (pin 5) is the force output that delivers current to the load, while OUTS (pin 6) is the sense input that feeds back the actual reference voltage at the load point. Connecting them together near the device enables standard operation; separating them with a Kelvin connection cancels voltage drop across PCB traces or connectors-ensuring precise 3.3V at the load.
Can MAX6043CAUT33-T be used in battery-powered applications?
Yes, the MAX6043CAUT33-T draws only 380–650µA over its full temperature range, making it highly suitable for battery-powered systems. Its wide 5.3V–40V input range also supports direct connection to multi-cell Li-ion or lead-acid batteries, and its low noise (5.3µVP-P) preserves resolution in low-power data acquisition nodes.
Is MAX6043CAUT33-T qualified for automotive applications?
Yes, the MAX6043CAUT33-T is specified for operation from –40°C to +125°C and manufactured using processes aligned with AEC-Q100 requirements. While not formally AEC-Q100 certified in this specific variant, its electrical specifications, packaging, and characterization across the full automotive temperature range make it widely deployed in automotive cabin, chassis, and powertrain subsystems.
MAX6043CAUT33-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 65ppm/°C
- Noise - 0.1Hz to 10Hz:
- 5.3µVp-p
- Noise - 10Hz to 10kHz:
- 9.5µVrms
- Voltage - Input:
- 5.3V ~ 40V
- Current - Supply:
- 650µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6043CAUT33-T FAQ
1.How can I place an order for MAX6043CAUT33-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6043CAUT33-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 MAX6043CAUT33-T reliable?
The price and inventory of MAX6043CAUT33-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6043CAUT33-T is usually 5 days.
3.What payment methods are accepted for MAX6043CAUT33-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6043CAUT33-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6043CAUT33-T?
MAX6043CAUT33-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6043CAUT33-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 MAX6043CAUT33-T?
For technical support, including MAX6043CAUT33-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6043CAUT33-T requirements.
6.How does Aetrix verify that MAX6043CAUT33-T is sourced from the original manufacturer or authorized distributors?
All MAX6043CAUT33-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 MAX6043CAUT33-T meets industry standards.
7.What is the process for return or replacement of MAX6043CAUT33-T?
All MAX6043CAUT33-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6043CAUT33-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 MAX6043CAUT33-T part is unused and in its original packaging.
Return procedure for MAX6043CAUT33-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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