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Analog Devices Inc./Maxim Integrated LM4040DIX3-5.0+T
- Part No.:
- LM4040DIX3-5.0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4040DIX3-5.0+T.pdf
- Description:
- IC VREF SHUNT 5V SC70
- Quantity:
- Payment:
- Shipping:
Inventory:1,545
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Product details
Overview
LM4040DIX3-5.0+T from Maxim Integrated is a precision 5.000V two-terminal shunt voltage reference in SC70-3 package, featuring 1.0% initial accuracy, ±150ppm/°C temperature coefficient over –40°C to +85°C, 60μA–15mA operating current range, and 0.5–1.5Ω dynamic impedance. It serves as a stable reference in battery-powered instrumentation and low-power analog signal chains.
For engineers reviewing the LM4040DIX3-5.0+T datasheet, LM4040DIX3-5.0+T pinout, LM4040DIX3-5.0+T application, or LM4040DIX3-5.0+T equivalent, key selection criteria include guaranteed reverse breakdown voltage tolerance (±50mV at +25°C), no-output-capacitor stability, ultra-small SC70 footprint, and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4040DIX3-5.0+T uses bandgap-based shunt regulation to maintain a precise 5.000V reverse breakdown voltage across its cathode-anode terminals. Its internal laser-trimmed resistor network ensures factory-set accuracy without external calibration.
It operates as a two-terminal device requiring only a series source resistor to regulate against varying supply voltages and load currents. Stability is maintained across 10Hz–10kHz bandwidth with 80µVRMS wideband noise and tolerates any output capacitance without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal reverse breakdown voltage, ±50mV tolerance at +25°C (1.0% grade) |
| Initial Accuracy | ±1.0% over temperature, enabling use in cost-sensitive systems where tight voltage references are required but highest precision is not critical |
| Temp Coefficient | ±150ppm/°C max over –40°C to +85°C, defining worst-case drift of ±12.5mV across full range |
| Operating Current | 60μA minimum to 15mA maximum shunt current, supporting micropower standby and moderate-load regulation |
| Dynamic Impedance | 0.5Ω min / 1.5Ω max at 1mA, ensuring <15mV output variation under 10mA load transients |
| Wideband Noise | 80µVRMS (10Hz–10kHz), suitable for ADC reference and low-noise sensor biasing |
| Long-Term Stability | 120ppm after 1000 hours, indicating predictable aging behavior for field-deployed equipment |
Pinout & Package
LM4040DIX3-5.0+T is housed in a RoHS-compliant 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23 equivalents. Pin 3 is unconnected (N.C.) and must remain floating or tied to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Reverse-bias input terminal; connects to higher-potential node (e.g., VIN via RS) |
| 2 (–) | Anode | Reference ground terminal; output voltage appears between pins 1 and 2 |
| 3 (N.C.) | No Connection | Internally unconnected; must be left floating or shorted to pin 2 per datasheet directive |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint enables placement in dense portable PCB layouts where board area is constrained |
| No output capacitor required | Guaranteed stability with any capacitive load eliminates BOM cost and layout risk associated with external compensation |
| Wide shunt current range | 60μA–15mA operation supports both micropower sleep modes and active regulation without redesign |
| Capacitive load tolerance | Stable under all output capacitance values, simplifying design for systems with variable decoupling or long traces |
| –40°C to +85°C operation | Industrial-grade temperature range ensures reliability in consumer electronics, industrial controls, and automotive cabin modules |
Applications
| Portable Instrumentation | Battery-Powered Sensors |
|---|---|
Use Scenario: Handheld multimeters and portable data loggers requiring stable reference for 12–16-bit ADCs. IC Role / Device Role / Timing Role: Two-terminal shunt reference providing 5.000V基准 for analog front-end scaling and offset correction. Use Value: Enables accurate voltage measurement down to ±0.5% full-scale error without trimming, leveraging 1.0% initial accuracy and low tempco. | Use Scenario: Low-power environmental sensors (temperature, humidity) powered by coin cells or energy harvesters. IC Role / Device Role / Timing Role: Precision bias source for sensor excitation and ADC reference in duty-cycled acquisition systems. Use Value: 60μA minimum operating current allows continuous reference operation during microamp-level sleep states, minimizing wake-up delay. |
| Industrial Process Controllers | Automotive Cabin Electronics |
Use Scenario: 4–20mA transmitter modules in PLC I/O cards needing calibrated output scaling. IC Role / Device Role / Timing Role: Stable 5.000V reference for DAC output conditioning and current-loop driver feedback. Use Value: ±150ppm/°C tempco ensures <±10mV drift over –40°C to +85°C ambient, meeting industrial calibration requirements. | Use Scenario: Infotainment control panels and HVAC interfaces operating in vehicle cabins. IC Role / Device Role / Timing Role: Reference for touch controller ADCs and microcontroller internal voltage monitoring. Use Value: SC70-3 size fits tight spaces behind displays; RoHS compliance and –40°C to +85°C rating meet automotive component sourcing standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C50IDBZR | 5.0V, 0.5% initial accuracy, ±50ppm/°C tempco, SOT23-3 package | Higher accuracy and lower tempco, but larger SOT23 footprint and 75μA min current | Select when tighter voltage stability is required and board area permits SOT23; not drop-in due to different pinout and package size |
| ADR3450ARJZ-R7 | 5.0V, 0.1% initial accuracy, ±10ppm/°C tempco, SOT23-5 package with enable pin | Three-terminal architecture with shutdown capability; requires additional control logic and PCB routing | Choose for ultra-precision systems needing sub-10ppm/°C drift and power gating; incompatible pinout and functional interface |
Compared with TL4050C50IDBZR and ADR3450ARJZ-R7, LM4040DIX3-5.0+T offers the smallest footprint and lowest minimum operating current among 5V shunt references, making it optimal for area- and power-constrained designs where ±1% accuracy suffices.
Availability
LM4040DIX3-5.0+T is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensors, and industrial process controllers requiring stable component supply with consistent lead times and volume pricing.
Supply support for LM4040DIX3-5.0+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 is a semiconductor company specializing in analog and mixed-signal ICs for power management, sensing, and communication applications.
The LM4040 product line delivers precision shunt voltage references optimized for space-constrained, low-power systems-designed to replace traditional zener diodes with superior accuracy, stability, and ease of use.
FAQ
What is the guaranteed reverse breakdown voltage tolerance for LM4040DIX3-5.0+T at +25°C?
The LM4040DIX3-5.0+T has a guaranteed reverse breakdown voltage tolerance of ±50mV at +25°C, corresponding to its 1.0% initial accuracy grade. This means the actual measured voltage will fall within 4.950V to 5.050V under standard test conditions, as confirmed in the Electrical Characteristics table for the 5.000V variant.
Does LM4040DIX3-5.0+T require an external output capacitor for stability?
No, LM4040DIX3-5.0+T does not require an external output capacitor. The device is designed to remain stable with any capacitive load, including zero capacitance, eliminating the need for external compensation components and reducing bill-of-materials cost and PCB area.
What is the minimum operating current for LM4040DIX3-5.0+T, and why is it important?
The minimum operating current for LM4040DIX3-5.0+T is 60μA, below which the device cannot maintain regulation. This value defines the lowest shunt current needed to sustain 5.000V output accuracy; maintaining ≥60μA ensures stable reference performance across temperature and load variations in low-power designs.
Can LM4040DIX3-5.0+T be used in automotive applications?
LM4040DIX3-5.0+T is rated for –40°C to +85°C operation and is RoHS-compliant, making it suitable for non-safety-critical automotive cabin electronics such as infotainment interfaces and HVAC controls. For under-hood or AEC-Q100 qualified applications, the /V suffix variants (e.g., LM4040DIX3-5.0/V+T) must be selected instead.
What is the function of Pin 3 on LM4040DIX3-5.0+T, and how should it be handled?
Pin 3 on LM4040DIX3-5.0+T is marked N.C. (No Connection) and is internally unconnected. Per the datasheet, it must be left floating or tied directly to Pin 2 (anode); connecting it to any other net may compromise device functionality or reliability.
LM4040DIX3-5.0+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 85 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4040DIX3-5.0+T FAQ
1.How can I place an order for LM4040DIX3-5.0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIX3-5.0+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 LM4040DIX3-5.0+T reliable?
The price and inventory of LM4040DIX3-5.0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIX3-5.0+T is usually 5 days.
3.What payment methods are accepted for LM4040DIX3-5.0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIX3-5.0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIX3-5.0+T?
LM4040DIX3-5.0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIX3-5.0+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 LM4040DIX3-5.0+T?
For technical support, including LM4040DIX3-5.0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIX3-5.0+T requirements.
6.How does Aetrix verify that LM4040DIX3-5.0+T is sourced from the original manufacturer or authorized distributors?
All LM4040DIX3-5.0+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 LM4040DIX3-5.0+T meets industry standards.
7.What is the process for return or replacement of LM4040DIX3-5.0+T?
All LM4040DIX3-5.0+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIX3-5.0+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 LM4040DIX3-5.0+T part is unused and in its original packaging.
Return procedure for LM4040DIX3-5.0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIX3-5.0+T Tags
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