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Analog Devices Inc./Maxim Integrated LM4040DIM3-5.0+T
- Part No.:
- LM4040DIM3-5.0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-5.0+T.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,897
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Product details
Overview
LM4040DIM3-5.0+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, 60μA to 15mA operating current range, and guaranteed operation from –40°C to +85°C. It delivers stable reverse-breakdown voltage for analog-to-digital converter (ADC) reference, portable power monitoring, and industrial sensor signal conditioning.
For engineers reviewing the LM4040DIM3-5.0+T datasheet, LM4040DIM3-5.0+T pinout, LM4040DIM3-5.0+T application, or LM4040DIM3-5.0+T equivalent, key selection criteria include shunt current capability, temperature drift over full industrial range, no-output-capacitor stability, low 80µVRMS wideband noise (10Hz–10kHz), and RoHS-compliant SC70 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4040DIM3-5.0+T uses bandgap-based shunt regulation to maintain a precise 5.000V reverse breakdown voltage across its cathode-anode terminals without requiring external capacitors. Its internal laser-trimmed resistor network ensures fixed output voltage accuracy within ±50mV at +25°C and ±99mV over –40°C to +85°C.
It operates as a two-terminal device with no ground connection, sinking current from a source resistor to regulate voltage. Pin 3 is unconnected (N.C.), simplifying layout while maintaining thermal performance via SC70's 340°C/W θJA on four-layer board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V nominal; ±50mV tolerance at +25°C ensures ADC reference accuracy within 0.1% FS error budget. |
| Initial Accuracy | 1.0% (D-grade); guarantees worst-case deviation ≤±50mV at room temperature for cost-sensitive industrial designs. |
| Tempco | ±150ppm/°C max; contributes ≤±12.5mV drift over –40°C to +85°C, critical for temperature-stable sensor front-ends. |
| Shunt Current Range | 60μA to 15mA; supports ultra-low-power battery systems and high-current regulation without external components. |
| Wideband Noise | 80µVRMS (10Hz–10kHz); enables high-resolution data acquisition without added filtering in 16-bit+ ADC applications. |
| Package | SC70-3 (1.8mm × 1.8mm); occupies 50% less area than SOT23, enabling dense mixed-signal PCB routing. |
| Operating Temp | –40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor instrumentation. |
Pinout & Package
LM4040DIM3-5.0+T is housed in a 3-pin SC70 surface-mount package (outline 21-0075, land pattern 90-0208), measuring 1.8mm × 1.8mm × 0.9mm with RoHS-compliant finish. Pin 3 is no-connect (N.C.) and must remain unconnected or tied to pin 2 per datasheet requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Positive terminal; connects to regulated voltage node and source resistor; carries full shunt current. |
| 2 (–) | Anode | Negative terminal; connects to system ground or return path; defines reference potential. |
| 3 (N.C.) | No Connection | Must be left floating or shorted to pin 2; not internally bonded-ensures mechanical stability without electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Enables placement in <2mm² PCB area-ideal for wearables, IoT nodes, and modular sensor boards. |
| No output capacitor required | Eliminates BOM cost and layout complexity while ensuring stability with any capacitive load up to 10µF. |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or LDO bypass networks without oscillation risk. |
| Low 80µVRMS noise | Reduces effective number of bits (ENOB) degradation in precision measurement circuits using 16-bit+ converters. |
| 15mA max shunt current | Permits use with higher supply voltages (e.g., 24V rails) via appropriately sized source resistors without derating. |
Applications
| Portable Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring battery voltage in handheld test equipment with 3.3V/5V logic and Li-ion cells. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.000V reference for ADC conversion of battery voltage. Use Value: Enables ±0.5% state-of-charge accuracy over temperature using single-supply SAR ADCs without trimming. | Use Scenario: Precision bridge sensor excitation and signal amplification in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Reference voltage source for instrumentation amplifier biasing and ADC reference in 4–20mA loop-powered devices. Use Value: Maintains <0.01% gain stability over –40°C to +85°C, reducing calibration frequency in field-deployed sensors. |
| Automotive Body Electronics | Medical Diagnostic Instrumentation |
Use Scenario: Voltage supervision and microcontroller reset generation in door module ECUs. IC Role / Device Role / Timing Role: Stable 5.000V reference for comparator-based brown-out detection circuitry. Use Value: Ensures reliable reset assertion across vehicle battery variations (9–16V) and ambient temperatures without hysteresis tuning. | Use Scenario: Reference for high-accuracy ECG front-end ADCs in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 5.000V to sigma-delta ADC reference inputs. Use Value: Limits noise contribution to <1 LSB at 24-bit resolution, preserving diagnostic waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Adjustable 2.5V reference (requires two external resistors); 0.5% initial accuracy; 50ppm/°C tempco; SOT23-5 package. | Requires external feedback network; better tempco but lower output voltage flexibility limits direct 5V replacement. | Select when adjustable output or tighter drift is prioritized over fixed 5V simplicity and SC70 size. |
| MAX6008AEUR+T | Fixed 5.0V shunt reference; 0.2% initial accuracy; 75ppm/°C tempco; SC70-3 package; 100μA–10mA current range. | Higher accuracy and lower drift, but narrower current range limits use with high-voltage supplies. | Choose for metrology-grade applications where 5.0V stability <±10mV over temperature is mandatory. |
Compared with TL431ACDBVR and MAX6008AEUR+T, LM4040DIM3-5.0+T offers the smallest footprint and widest shunt current range among 5V shunt references, making it optimal for space-constrained industrial and portable designs where ±50mV room-temperature tolerance is acceptable.
Availability
LM4040DIM3-5.0+T is available at Aetrix Electronics and suitable for portable power monitoring, industrial sensor signal conditioning, automotive body electronics, and medical diagnostic instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4040DIM3-5.0+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 industrial, automotive, communications, and computing markets.
The LM4040 product line delivers precision micropower shunt voltage references optimized for space-constrained, low-noise, and thermally stable applications across industrial and portable electronics.
FAQ
What is the guaranteed operating temperature range for LM4040DIM3-5.0+T?
The LM4040DIM3-5.0+T is specified for operation from –40°C to +85°C. This I-grade temperature range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the Maxim datasheet. The device maintains its 1.0% initial accuracy and ±150ppm/°C temperature coefficient across this full range, making it suitable for industrial control panels and outdoor instrumentation where ambient extremes occur.
Does LM4040DIM3-5.0+T require an external output capacitor for stability?
No, LM4040DIM3-5.0+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC input capacitors or LDO bypass networks up to 10µF. This eliminates BOM cost and layout constraints while maintaining regulation integrity-confirmed in the Applications Information and Typical Operating Characteristics sections of the datasheet.
What is the function of Pin 3 on LM4040DIM3-5.0+T?
Pin 3 on LM4040DIM3-5.0+T is designated N.C. (No Connection). Per the Pin Configuration diagram and Pin Description table, it must be left unconnected or tied to Pin 2 (anode). It is not internally bonded and serves only mechanical stabilization-connecting it elsewhere risks violating the device's thermal and electrical specifications.
How does the shunt current range of LM4040DIM3-5.0+T impact circuit design?
The LM4040DIM3-5.0+T operates over 60μA to 15mA shunt current, enabling flexible source resistor (RS) selection. At minimum current, it sustains regulation for ultra-low-power systems (e.g., coin-cell IoT sensors); at maximum, it supports high-voltage rails (e.g., 24V) with RS ≥ 1.33kΩ. Designers must ensure ISHUNT stays within this window under all load and supply conditions to avoid dropout or overstress.
What is the wideband noise specification of LM4040DIM3-5.0+T and why does it matter?
LM4040DIM3-5.0+T exhibits 80µVRMS wideband noise over 10Hz–10kHz, measured at 100µA shunt current. This low noise floor directly impacts high-resolution data acquisition-e.g., in 16-bit+ ADC systems-by limiting reference-induced quantization error. For a 5V full-scale ADC, this noise contributes <0.26 LSB RMS, preserving effective resolution without additional filtering stages.
LM4040DIM3-5.0+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):
- 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:
- SOT-23-3
LM4040DIM3-5.0+T FAQ
1.How can I place an order for LM4040DIM3-5.0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-5.0+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 LM4040DIM3-5.0+T reliable?
The price and inventory of LM4040DIM3-5.0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-5.0+T is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-5.0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-5.0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-5.0+T?
LM4040DIM3-5.0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-5.0+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 LM4040DIM3-5.0+T?
For technical support, including LM4040DIM3-5.0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-5.0+T requirements.
6.How does Aetrix verify that LM4040DIM3-5.0+T is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-5.0+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 LM4040DIM3-5.0+T meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-5.0+T?
All LM4040DIM3-5.0+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-5.0+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 LM4040DIM3-5.0+T part is unused and in its original packaging.
Return procedure for LM4040DIM3-5.0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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