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Analog Devices Inc./Maxim Integrated LM4040DIM3-4.1+T
- Part No.:
- LM4040DIM3-4.1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-4.1+T.pdf
- Description:
- IC VREF SHUNT 4.096V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
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Product details
Overview
LM4040DIM3-4.1+T from Maxim Integrated is a precision 4.096V two-terminal shunt voltage reference in SC70-3 package, featuring 1.0% initial accuracy, ±150ppm/°C temperature coefficient, 60μA to 15mA operating current range, and guaranteed operation from –40°C to +85°C. It serves as a stable reference for ADC/DAC biasing, portable power monitoring, and industrial sensor signal conditioning.
For engineers reviewing the LM4040DIM3-4.1+T datasheet, LM4040DIM3-4.1+T pinout, LM4040DIM3-4.1+T application, or LM4040DIM3-4.1+T equivalent, key selection criteria include reverse breakdown voltage tolerance (±41 mV at +25°C), low dynamic impedance (≤1.3 Ω), wideband noise (64 µVRMS), and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040DIM3-4.1+T implements a bandgap-based shunt reference architecture, maintaining a fixed 4.096V reverse breakdown voltage across its anode–cathode terminals when biased with 60μA–15mA shunt current. Its internal laser-trimmed resistor network ensures factory-set accuracy without external calibration.
It operates over –40°C to +85°C with no output capacitor required, tolerates any capacitive load, and exhibits low 64 µVRMS wideband noise (10Hz–10kHz) and 1.3 Ω maximum dynamic impedance at 1mA. The device draws zero quiescent current in forward bias and supports up to 10mA forward conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Breakdown Voltage | 4.096 V nominal at +25°C; ±41 mV tolerance (D-grade) ensures predictable reference level for 12-bit ADCs requiring ≤0.5% full-scale error. |
| Initial Accuracy | 1.0% max (D-grade); corresponds to ±41 mV absolute error at 4.096V, suitable for cost-sensitive industrial sensing where tight calibration is performed externally. |
| Tempco | ±150 ppm/°C max; contributes ≤±10.2 mV drift over –40°C to +85°C, enabling stable performance in unregulated ambient environments. |
| Operating Current Range | 60 μA to 15 mA; supports ultra-low-power battery operation down to 60 μA while delivering sufficient current for 10 kΩ load regulation. |
| Dynamic Impedance | ≤1.3 Ω at 1 mA, 120 Hz; minimizes output voltage shift under load transients, critical for high-resolution data acquisition systems. |
| Wideband Noise | 64 µVRMS (10 Hz–10 kHz); limits added noise floor in precision analog front-ends, especially for 16-bit SAR ADC references. |
| Long-Term Stability | 120 ppm over 1000 hours; ensures minimal reference drift during product lifetime, reducing recalibration frequency in field-deployed equipment. |
Pinout & Package
The LM4040DIM3-4.1+T is housed in a 3-pin SC70 surface-mount package (1.8 mm × 1.8 mm), 50% smaller than SOT23 equivalents. Pin 3 is NC and must remain unconnected or tied to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Reverse-biased terminal; connects to regulated supply rail; sinks shunt current to maintain 4.096V across pins 1–2. |
| 2 (–) | Anode | Reference ground node; forms the low-side return path; voltage at this pin defines the 0V reference for the system. |
| 3 (N.C.) | No Connection | Internally unconnected; must be left floating or shorted to pin 2 to avoid parasitic coupling or ESD risk. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8 mm × 1.8 mm footprint enables placement in space-constrained PCB layouts such as wearable sensors and compact IoT modules. |
| No output capacitor required | Guaranteed stability with any capacitive load eliminates BOM cost and layout area for external COUT, simplifying design validation. |
| Low 64 µVRMS noise | Enables direct use in 16-bit ADC reference paths without additional filtering, preserving SNR in precision measurement applications. |
| 15 mA max shunt current | Supports driving higher-current loads (e.g., op-amp bias networks or small logic rails) without external buffering. |
| RoHS-compliant & tape-and-reel | +T suffix confirms lead-free construction and automated assembly readiness for high-volume SMT production lines. |
Applications
| Portable Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Measuring battery voltage in handheld medical devices using a 12-bit ADC with 3.3V supply. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC full-scale range, enabling precise 1 mV resolution. Use Value: 1.0% initial accuracy and ±150 ppm/°C tempco ensure <0.8% total error across –20°C to +60°C operating range without software compensation. | Use Scenario: Biasing a 4–20 mA current-loop transmitter in factory automation. IC Role / Device Role / Timing Role: Supplies accurate excitation voltage to bridge sensors and sets DAC reference for loop current control. Use Value: 60 μA minimum operating current allows operation from low-quiescent LDOs, extending system standby time in energy-harvesting nodes. |
| Automotive Body Control Modules | Smart Energy Metering |
Use Scenario: Reference for microcontroller ADC measuring 12V battery health in non-critical cabin electronics. IC Role / Device Role / Timing Role: Shunt reference connected between battery rail and MCU VREF+ pin; regulates via series resistor. Use Value: –40°C to +85°C rating and AEC-Q100-compatible construction (per /V variants) support deployment in under-dash environments. | Use Scenario: Precision voltage reference for polyphase energy meter ICs performing kWh calculation. IC Role / Device Role / Timing Role: Sets reference for metrology ADC sampling AC mains voltage and current waveforms. Use Value: 120 ppm long-term stability reduces calibration drift over 10-year field life, lowering maintenance cost for utility deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | 4.096V, 0.5% initial accuracy, ±50 ppm/°C tempco, SOT23-3 package, 60 μA–15 mA range | Higher accuracy and lower tempco; requires tighter layout control due to SOT23 thermal mass | Select when system-level accuracy budget demands <0.5% reference error and ambient temperature stays within –25°C to +75°C. |
| MAX6008AEUR+T | 4.096V, 0.2% initial accuracy, ±50 ppm/°C tempco, SC70-3 package, 10 μA–10 mA range | Lower quiescent current (10 μA min), narrower current range, optimized for ultra-low-power designs | Choose for battery-powered IoT endpoints where sleep-mode current must stay below 15 μA and full-scale accuracy >0.2% is required. |
Compared with TL4050C41IDBZR and MAX6008AEUR+T, the LM4040DIM3-4.1+T offers the lowest cost per unit and widest operating current range, making it optimal for industrial controls where moderate accuracy suffices and supply headroom varies significantly.
Availability
LM4040DIM3-4.1+T is available at Aetrix Electronics and suitable for portable power monitoring, industrial sensor signal conditioning, automotive body control modules, and smart energy metering requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for LM4040DIM3-4.1+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 and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing high reliability and integration density.
The LM4040 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and thermally variable applications where stability, low noise, and minimal external components are critical.
FAQ
What is the guaranteed operating temperature range for LM4040DIM3-4.1+T?
The LM4040DIM3-4.1+T is specified for operation from –40°C to +85°C. This range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. It does not carry the /E suffix (e.g., LM4040EIM3-4.1+T), which denotes the extended –40°C to +125°C grade. The D-grade tempco of ±150 ppm/°C applies across this full range.
Can LM4040DIM3-4.1+T be used without an output capacitor?
Yes, the LM4040DIM3-4.1+T is explicitly designed to be stable with any capacitive load and requires no external output capacitor. This is stated in both the General Description and Applications Information sections. Its internal architecture ensures phase margin is maintained regardless of output capacitance, eliminating a common design constraint found in series references.
What is the minimum shunt current required for regulation in LM4040DIM3-4.1+T?
The LM4040DIM3-4.1+T requires a minimum shunt current of 78 μA at +25°C to maintain regulation, as specified in the Electrical Characteristics table for the 4.096V version under "Minimum Operating Current" (IRMIN). At temperature extremes, this value increases slightly - e.g., up to 85 μA for the D-grade variant - to ensure stable 4.096V output across –40°C to +85°C.
How does the 1.0% initial accuracy of LM4040DIM3-4.1+T translate to absolute voltage error?
The 1.0% initial accuracy of LM4040DIM3-4.1+T corresponds to ±41 mV absolute error at the nominal 4.096V output voltage (±1.0% × 4.096 V = ±40.96 mV). This is verified in the Electrical Characteristics table under "Reverse Breakdown Voltage Tolerance" for the D-grade, listing ±41 mV at +25°C. This error is fully characterized and production-tested.
Is pin 3 of LM4040DIM3-4.1+T functional or should it be left unconnected?
Pin 3 of LM4040DIM3-4.1+T is labeled N.C. (No Connection) in the Pin Description and Pin Configuration diagrams. It is internally unconnected and must be left floating or tied to pin 2 (anode) - never driven or loaded. This is explicitly mandated in the datasheet to prevent malfunction or reliability degradation.
LM4040DIM3-4.1+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:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 64µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 78 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-4.1+T FAQ
1.How can I place an order for LM4040DIM3-4.1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-4.1+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 LM4040DIM3-4.1+T reliable?
The price and inventory of LM4040DIM3-4.1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-4.1+T is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-4.1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-4.1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-4.1+T?
LM4040DIM3-4.1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-4.1+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 LM4040DIM3-4.1+T?
For technical support, including LM4040DIM3-4.1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-4.1+T requirements.
6.How does Aetrix verify that LM4040DIM3-4.1+T is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-4.1+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 LM4040DIM3-4.1+T meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-4.1+T?
All LM4040DIM3-4.1+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-4.1+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 LM4040DIM3-4.1+T part is unused and in its original packaging.
Return procedure for LM4040DIM3-4.1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3-4.1+T Tags
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