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Analog Devices Inc./Maxim Integrated MAX6041AEUR+T
- Part No.:
- MAX6041AEUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6041AEUR+T.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
The MAX6041AEUR+T from Analog Devices is a precision, low-dropout, micropower series-mode voltage reference in SOT23-3 packaging, delivering a stable 4.096V output with ≤0.2% initial accuracy, ≤15ppm/°C temperature coefficient (0°C to +70°C), and 100mV dropout at 500μA load current. It serves as a high-stability reference for ADCs, DACs, and sensor signal chains in battery-powered industrial data acquisition systems.
For engineers reviewing the MAX6041AEUR+T datasheet, MAX6041AEUR+T pinout, MAX6041AEUR+T application, or MAX6041AEUR+T equivalent, key selection criteria include its supply-current independence (35μA max, 0.8μA/V variation), 2.2nF capacitive-load stability without external compensation, and operation across –40°C to +85°C.
Technical Context
This device uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <20ppm/°C tempco over –40°C to +85°C and initial accuracy better than 0.2%. It operates as a series-mode reference-unlike shunt-mode alternatives-eliminating the need for an external bias resistor and enabling supply current virtually independent of input voltage.
It supports bidirectional 500μA load current (source/sink), exhibits 0.15μV/μA load regulation (sourcing) and 0.20μV/μA (sinking), and remains stable with 0–2.2nF output capacitance-enabling direct connection to SAR ADC sample capacitors or low-noise op-amp inputs without added compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.2% at +25°C - enables precise 12-bit ADC full-scale calibration (e.g., 4.096V = 1 LSB = 1mV for 4096 codes) |
| Tempco | ≤15ppm/°C (0°C to +70°C) - ensures ≤0.8mV drift over industrial ambient range, critical for uncalibrated field instruments |
| Quiescent Current | ≤35μA - allows >10-year battery life in 10μA-average-power IoT sensors using coin cells |
| Dropout Voltage | 100mV at 500μA - supports operation from 4.196V minimum input, compatible with single Li-ion or 3×AA configurations |
| Load Regulation | 0.15μV/μA sourcing - maintains <75μV error under 500μA dynamic load steps, essential for multiplexed sensor front-ends |
| Capacitive Load Stability | 0–2.2nF - eliminates need for external compensation capacitor, saving PCB area in space-constrained modules |
| Line Regulation | 25μV/V - limits input ripple-induced error to <250μV over 10V input swing, easing LDO selection upstream |
Pinout & Package
SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.12mm max height, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Voltage Input | Accepts 4.296V to 12.6V; internal regulation rejects ripple up to 77dB at 120Hz |
| 2 (OUT) | Reference Voltage Output | Provides 4.096V with 0.15μV/μA sourcing load regulation; connects directly to ADC REF+ or op-amp non-inverting input |
| 3 (GND) | Ground Reference | Low-impedance return path; must be star-connected to minimize ground bounce in mixed-signal layouts |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary curvature-correction circuit | Reduces parabolic temperature drift, enabling <15ppm/°C performance without external trimming |
| Laser-trimmed thin-film resistors | Ensures 0.2% initial accuracy and <130ppm hysteresis after thermal cycling |
| Supply-current independence | 35μA max quiescent current varies only 0.8μA per volt of VIN - simplifies power budgeting across varying battery states |
| No external compensation required | Stable with 0–2.2nF load capacitance - removes risk of oscillation and layout sensitivity in high-density designs |
| Series-mode architecture | Eliminates external bias resistor; avoids wasted current and improves efficiency vs. shunt references in low-power systems |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure every 10 seconds using a 12-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC conversion, ensuring consistent LSB size across temperature and battery discharge. Use Value: 0.2% initial accuracy and 15ppm/°C tempco maintain <±1 LSB total error over –20°C to +60°C, eliminating field recalibration. | Use Scenario: 4–20mA loop-powered pressure transmitter with HART digital overlay, operating in hazardous areas. IC Role / Device Role / Timing Role: Supplies precision reference for analog front-end instrumentation amplifier and DAC used in HART modulation. Use Value: 35μA quiescent current leaves >3.5mA headroom for loop-powered operation while maintaining 12-bit linearity. |
| Medical Vital Sign Monitors | Test & Measurement Equipment |
Use Scenario: Handheld ECG device acquiring 1kHz sampled biopotential signals with 16-bit resolution. IC Role / Device Role / Timing Role: References the ADC and programmable gain amplifier to ensure accurate amplitude scaling of microvolt-level cardiac signals. Use Value: 100μVp-p (0.1–10Hz) low-frequency noise prevents baseline wander masking ST-segment shifts. | Use Scenario: Benchtop multimeter with auto-ranging, requiring stable reference across multiple decades of measurement ranges. IC Role / Device Role / Timing Role: Primary reference for dual-slope integrator and successive-approximation ADC subsystems. Use Value: 50ppm/1000h long-term stability reduces annual calibration frequency and improves metrology traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440ARJZ-R7 | 4.096V output, 10ppm/°C max tempco, 45μA max quiescent current, SOT23-3 | Higher supply current reduces battery life in ultra-low-power designs; tighter tempco benefits high-precision metrology | Select when <10ppm/°C drift is mandatory and supply current >35μA is acceptable |
| REF3040AIDBZR | 4.096V output, 50ppm/°C max tempco, 40μA max quiescent current, SOT23-3 | Looser tempco increases temperature-induced error by ~3×; lower cost for non-critical industrial use | Select for cost-sensitive applications where ±0.5% total error over temperature is acceptable |
Compared with ADR3440ARJZ-R7 and REF3040AIDBZR, the MAX6041AEUR+T delivers optimal balance of ultra-low quiescent current (35μA), tight tempco (15ppm/°C), and proven stability with 2.2nF loads-making it preferred for battery-operated, space-constrained, and high-resolution data acquisition systems.
Availability
The MAX6041AEUR+T is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, handheld test equipment, and battery-powered data loggers requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6041AEUR+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX6041AEUR+T belongs to the MAX60xx family of precision, low-power, low-dropout voltage references designed specifically for high-accuracy, battery-operated, and space-constrained measurement systems.
FAQ
What is the maximum load current the MAX6041AEUR+T can source or sink?
The MAX6041AEUR+T can source or sink up to ±500μA of load current while maintaining specified accuracy and stability. This bidirectional capability supports active filtering, biasing of op-amps, and driving ADC reference inputs with dynamic loading-critical for multiplexed sensor systems where reference current demand changes rapidly.
Does the MAX6041AEUR+T require an external output capacitor for stability?
No, the MAX6041AEUR+T is internally compensated and stable with output capacitance ranging from 0 to 2.2nF. Unlike many references requiring a minimum capacitor, this eliminates layout constraints and saves board area-especially valuable in wearable and portable designs where every mm² counts.
What is the minimum input voltage required for the MAX6041AEUR+T to regulate properly?
The MAX6041AEUR+T requires a minimum input voltage of VOUT + 200mV = 4.296V to maintain regulation at full 500μA load. At lighter loads, dropout decreases proportionally; at 100μA, dropout is typically ~20mV, allowing operation down to ~4.116V. This low dropout enables compatibility with aging batteries and low-voltage DC-DC outputs.
How does the supply current of the MAX6041AEUR+T vary with input voltage?
The MAX6041AEUR+T exhibits only 0.8μA/V variation in supply current across its 4.296V to 12.6V input range, with a maximum of 35μA. This near-constant current simplifies power budgeting in systems with variable input sources (e.g., solar-charged batteries) and avoids unexpected current surges during brownout conditions.
Is the MAX6041AEUR+T suitable for use with high-resolution ADCs such as 16-bit or 18-bit converters?
Yes, the MAX6041AEUR+T is well-suited for 16-bit and 18-bit ADCs due to its 0.2% initial accuracy, 15ppm/°C tempco, 100μVp-p (0.1–10Hz) low-frequency noise, and excellent load regulation (0.15μV/μA). Its 4.096V output aligns precisely with common 12-bit and 16-bit full-scale codes, minimizing quantization error in precision measurement systems.
MAX6041AEUR+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 100µVp-p
- Noise - 10Hz to 10kHz:
- 200µVrms
- Voltage - Input:
- 4.296V ~ 12.6V
- Current - Supply:
- 35µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6041AEUR+T FAQ
1.How can I place an order for MAX6041AEUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6041AEUR+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 MAX6041AEUR+T reliable?
The price and inventory of MAX6041AEUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6041AEUR+T is usually 5 days.
3.What payment methods are accepted for MAX6041AEUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6041AEUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6041AEUR+T?
MAX6041AEUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6041AEUR+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 MAX6041AEUR+T?
For technical support, including MAX6041AEUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6041AEUR+T requirements.
6.How does Aetrix verify that MAX6041AEUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6041AEUR+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 MAX6041AEUR+T meets industry standards.
7.What is the process for return or replacement of MAX6041AEUR+T?
All MAX6041AEUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6041AEUR+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 MAX6041AEUR+T part is unused and in its original packaging.
Return procedure for MAX6041AEUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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