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Analog Devices Inc./Maxim Integrated LM4040DIM3-3.0+T
- Part No.:
- LM4040DIM3-3.0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-3.0+T.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,427
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Product details
Overview
LM4040DIM3-3.0+T from Maxim Integrated is a precision 3.000V two-terminal shunt voltage reference in SC70-3 package, featuring 1.0% initial accuracy, 150ppm/°C temperature coefficient, and 60μA–15mA operating current range. It delivers stable reverse-breakdown voltage for analog-to-digital converters, portable battery-powered systems, and industrial sensor signal conditioning.
For engineers reviewing the LM4040DIM3-3.0+T datasheet, LM4040DIM3-3.0+T pinout, LM4040DIM3-3.0+T application, or LM4040DIM3-3.0+T equivalent, key selection criteria include guaranteed -40°C to +85°C operation, no external capacitor requirement, low 50µVRMS wideband noise (10Hz–10kHz), and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4040DIM3-3.0+T uses bandgap-based shunt regulation to maintain a precise 3.000V reverse breakdown voltage across its terminals when biased with 60μA–15mA cathode-to-anode current. Its internal laser-trimmed resistor network ensures factory-set accuracy without external calibration.
It operates over full industrial temperature range (-40°C to +85°C), exhibits ±15ppm/°C typical temperature coefficient at 100µA, and maintains stability with any output capacitance-eliminating need for external stabilization capacitors while tolerating load transients up to ±2.5mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V nominal reverse breakdown voltage, ±30mV tolerance at +25°C (1.0% grade) |
| Initial Accuracy | ±1.0% over temperature, enabling direct use in 12-bit ADC reference without trimming |
| Temp Coefficient | 150ppm/°C max, limiting drift to ±12.0mV over -40°C to +85°C range |
| Operating Current | 60μA minimum to 15mA maximum shunt current, supporting micropower and high-current regulation |
| Dynamic Impedance | ≤1.1Ω at 1mA, ensuring <8.0mV output variation across 1–15mA load current changes |
| Wideband Noise | 50µVRMS (10Hz–10kHz), suitable for precision measurement front-ends |
| Long-Term Stability | 120ppm after 1000 hours, critical for field-deployed instrumentation |
Pinout & Package
LM4040DIM3-3.0+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 be left floating or tied to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (cathode) | Reverse-biased input; connects to regulated voltage node and current-limiting resistor |
| 2 (–) | Negative terminal (anode) | Reference ground return path; forms shunt current loop with pin 1 |
| 3 (N.C.) | No connection | Must remain unconnected or tied to pin 2; no internal functionality |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Enables placement in <2.0mm² PCB area-ideal for wearables and compact IoT sensors |
| No output capacitor required | Eliminates BOM cost and layout risk associated with stability-compensation components |
| Capacitive load tolerance | Stable with any output capacitance, simplifying interface to ADC sample-and-hold inputs |
| Guaranteed -40°C to +85°C operation | Validated performance across full industrial temperature range without derating |
| Low 50µVRMS noise | Supports 14-bit effective resolution in precision data acquisition systems |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor with 12-bit SAR ADC sampling analog electrochemical signal. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.000V reference for ADC conversion. Use Value: 1.0% initial accuracy and 150ppm/°C tempco ensure <±1 LSB error across operating temperature without calibration. | Use Scenario: Remote environmental sensor node powered by coin-cell battery for multi-year deployment. IC Role / Device Role / Timing Role: Micropower shunt reference supplying reference voltage to ultra-low-power ADC and MCU analog peripherals. Use Value: 60μA minimum operating current enables >10-year battery life while maintaining 3.000V reference integrity. |
| Industrial Process Transmitters | Automotive Cabin Control Modules |
Use Scenario: 4–20mA loop-powered pressure transmitter with HART digital overlay. IC Role / Device Role / Timing Role: Precision shunt reference for DAC output scaling and sensor excitation circuitry. Use Value: Guaranteed -40°C to +85°C operation and 120ppm long-term stability support 15-year field reliability requirements. | Use Scenario: HVAC control module in vehicle cabin requiring stable reference for temperature/humidity sensing. IC Role / Device Role / Timing Role: Voltage reference for automotive-grade analog front-end ICs interfacing with NTC thermistors. Use Value: SC70-3 package fits tight board space; 150ppm/°C tempco meets AEC-Q200 ambient thermal cycling requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | Adjustable 1.24V–18V output; 0.5% initial accuracy; SOT23-3 package | Requires external resistor divider; higher quiescent current (80μA min) | Select when adjustable reference or wider voltage range is needed; not drop-in for fixed 3.000V use |
| MAX6003EUR+T | Fixed 3.00V; 0.2% initial accuracy; SC70-3; 75ppm/°C tempco | Tighter accuracy and lower tempco, but limited to +85°C max operating temperature | Choose for higher-precision applications where tighter spec and same package are acceptable trade-offs |
Compared with TLVH431ACDBVR and MAX6003EUR+T, LM4040DIM3-3.0+T offers the lowest BOM cost for fixed 3.000V reference, widest operating current range (60μA–15mA), and best balance of accuracy, noise, and temperature range in SC70-3 form factor.
Availability
LM4040DIM3-3.0+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial process transmitters requiring stable component supply with consistent lead times and full traceability.
Supply support for LM4040DIM3-3.0+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 designs high-performance analog and mixed-signal semiconductor solutions for industrial, communications, computing, and consumer applications.
The LM4040 product line delivers precision micropower shunt voltage references optimized for space-constrained, battery-sensitive, and thermally demanding systems requiring stable reference voltages without external compensation.
FAQ
What is the guaranteed operating temperature range for LM4040DIM3-3.0+T?
The LM4040DIM3-3.0+T is specified and guaranteed over -40°C to +85°C ambient temperature. This range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet, and applies to all electrical characteristics including initial accuracy, temperature coefficient, and dynamic impedance.
Does LM4040DIM3-3.0+T require an external output capacitor for stability?
No, LM4040DIM3-3.0+T does not require an external output capacitor. The device is internally compensated and remains stable with any capacitive load, as explicitly stated in the General Description and Applications Information sections. This eliminates design risk and reduces bill-of-materials cost.
What is the minimum shunt current required for LM4040DIM3-3.0+T to maintain regulation?
The LM4040DIM3-3.0+T requires a minimum shunt current of 67μA at +25°C and 67μA across its full -40°C to +85°C operating range. This value is specified in the Electrical Characteristics table under "Minimum Operating Current" for the D-grade (1.0% accuracy) variant.
How does the 150ppm/°C temperature coefficient affect LM4040DIM3-3.0+T output voltage over temperature?
With a 150ppm/°C maximum temperature coefficient, LM4040DIM3-3.0+T exhibits up to ±12.0mV total drift over its -40°C to +85°C range (ΔT = 125°C). This corresponds to ±0.4% full-scale error relative to 3.000V, which is fully accounted for in the over-temperature tolerance specification of ±1.98% for the D-grade device.
Can pin 3 of LM4040DIM3-3.0+T be left floating or must it be connected?
Pin 3 of LM4040DIM3-3.0+T is designated N.C. (no connection) and may be left floating or connected to pin 2 (anode). The datasheet explicitly states "PIN 3 MUST BE LEFT UNCONNECTED OR CONNECTED TO PIN 2", confirming both options are valid and electrically identical for this part.
LM4040DIM3-3.0+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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 45µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-3.0+T FAQ
1.How can I place an order for LM4040DIM3-3.0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-3.0+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 LM4040DIM3-3.0+T reliable?
The price and inventory of LM4040DIM3-3.0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-3.0+T is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-3.0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-3.0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3-3.0+T?
LM4040DIM3-3.0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-3.0+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 LM4040DIM3-3.0+T?
For technical support, including LM4040DIM3-3.0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-3.0+T requirements.
6.How does Aetrix verify that LM4040DIM3-3.0+T is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-3.0+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 LM4040DIM3-3.0+T meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-3.0+T?
All LM4040DIM3-3.0+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-3.0+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 LM4040DIM3-3.0+T part is unused and in its original packaging.
Return procedure for LM4040DIM3-3.0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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