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Texas Instruments LM4040EIM7-2.0/NOPB
- Part No.:
- LM4040EIM7-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040EIM7-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:678
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Product details
Overview
LM4040EIM7-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-5 package, delivering a fixed 2.048 V reverse breakdown voltage with ±41 mV (±2.0%) initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA over −40°C to +85°C and serves as a stable reference in analog signal chains for data acquisition and field transmitters.
For engineers reviewing the LM4040EIM7-2.0/NOPB datasheet, LM4040EIM7-2.0/NOPB pinout, LM4040EIM7-2.0/NOPB application, or LM4040EIM7-2.0/NOPB equivalent, key selection criteria include its SC70-5 footprint, shunt topology requiring external current limiting, 2.048 V output accuracy across industrial temperature range, and compatibility with capacitive loads without output capacitor.
Technical Context
The LM4040EIM7-2.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±2.0% initial voltage tolerance (Grade E) and incorporates bandgap-derived curvature correction for stable temperature drift. Its shunt architecture requires an external series resistor to set operating current and regulates output by sinking variable current through the cathode terminal.
Designed for space-constrained systems, it eliminates need for output stabilization capacitors while maintaining stability with any capacitive load - a critical advantage over series references in low-power sensor interfaces and isolated analog front-ends where board area and BOM count are tightly constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - sets precise bias point for ADCs, DACs, and comparators. |
| Initial Tolerance | ±41 mV (±2.0%) at 25°C - defines maximum deviation before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C - ensures ≤±0.21 mV/°C drift over −40°C to +85°C, critical for measurement repeatability. |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current precision circuits with single resistor control. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - enables high-resolution measurements without added filtering overhead. |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - maintains voltage stability under fast load transients in closed-loop feedback paths. |
Pinout & Package
LM4040EIM7-2.0/NOPB is packaged in a 5-pin SC70 (DCK) case measuring 2.00 mm × 1.25 mm. Pins 4 and 5 are no-connect (NC); pin 2 is cathode (I/O), pin 1 is anode (O), and pin 3 is a floating or anode-connected terminal for EMI mitigation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Ground reference node; must be connected to system ground or low-impedance return path. |
| Pin 2 | Cathode | Shunt current sink and output node; connects to resistor input and load reference point. |
| Pin 3 | NC (optional anode tie) | May float or connect to pin 1 to reduce EMI sensitivity in noisy environments (e.g., near switching regulators). |
| Pins 4 & 5 | No Connect | Unbonded; must remain unconnected per TI design guidelines to avoid parametric shift or failure. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact layouts without stability-compromising bypass components. |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or long PCB traces without oscillation risk. |
| Zener-zap voltage trim | Ensures production-grade 2.048 V accuracy without post-package calibration or laser trimming. |
| Low 35 μVrms noise | Reduces effective resolution loss in 16-bit+ data acquisition systems without external filtering. |
| SC70-5 footprint | Occupies <2.5 mm² board area - ideal for wearables, IoT sensors, and modular analog I/O modules. |
Applications
| Field Transmitters | Data Acquisition |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter in oil & gas or process control. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.048 V for DAC output scaling and current loop regulation. Use Value: Enables 12-bit+ linearity over −40°C to +85°C using only one external resistor and no capacitor. |
Use Scenario: Isolated analog input module for PLC or industrial controller. IC Role / Device Role / Timing Role: Precision reference for sigma-delta ADC front-end, referenced to isolated power domain. Use Value: Maintains ±0.02% full-scale error contribution across temperature with <1.1 Ω dynamic impedance. |
| Analog Input Module | Energy Infrastructure |
Use Scenario: DIN-rail mounted analog input card with multiple channel conditioning. IC Role / Device Role / Timing Role: Local reference for op-amp gain-setting and ADC reference in multi-channel mux-based design. Use Value: SC70-5 size allows per-channel referencing without increasing PCB layer count or thermal coupling. |
Use Scenario: Smart meter voltage sensing stage with anti-tampering requirements. IC Role / Device Role / Timing Role: Stable reference for metrology-grade ADC sampling of mains voltage waveform. Use Value: 100 ppm/°C tempco and 120 ppm long-term stability meet IEC 62053-21 Class 0.2 accuracy compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040DIM7-2.0/NOPB | ±1.0% initial tolerance (±20 mV), same SC70-5 package and 2.048 V nominal output. | Better accuracy for mid-tier industrial sensors where ±2.0% is excessive but A-grade cost is unjustified. | Select when tighter initial accuracy is needed without upgrading to Grade A or changing layout. |
| MAX6002EUR+T | 2.048 V output, ±0.5% initial tolerance, SOT-23-3 package, higher 65 ppm/°C tempco. | Requires different footprint and offers lower tempco margin; suitable for commercial-temp consumer devices. | Choose for cost-sensitive designs where SOT-23-3 compatibility exists and extended temperature operation is not required. |
Compared with LM4040EIM7-2.0/NOPB, LM4040DIM7-2.0/NOPB improves initial accuracy by 2× at identical package and operating range, while MAX6002EUR+T trades SC70-5 miniaturization for SOT-23-3 availability and relaxed tempco - making each viable only within defined accuracy, size, and environmental boundaries.
Availability
LM4040EIM7-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, data acquisition systems, and analog input modules requiring stable component supply with guaranteed long-term sourcing and automotive-grade traceability.
Supply support for LM4040EIM7-2.0/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive-qualified components.
The LM4040-N series was developed to deliver high-accuracy, low-power shunt references for space-constrained industrial and automotive measurement systems - emphasizing stability, ease of use, and qualification to AEC-Q100 Grade 3.
FAQ
What is the minimum operating current for LM4040EIM7-2.0/NOPB?
The LM4040EIM7-2.0/NOPB requires a minimum operating current of 60 μA at 25°C and 65 μA across the full −40°C to +85°C industrial temperature range. This current must be supplied via an external series resistor between the supply rail and the cathode pin to ensure proper regulation and voltage accuracy.
Does LM4040EIM7-2.0/NOPB require an output capacitor?
No, LM4040EIM7-2.0/NOPB does not require an output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC input capacitors or long PCB traces - eliminating a common BOM item and layout constraint found in series references.
What is the temperature coefficient specification for LM4040EIM7-2.0/NOPB?
The LM4040EIM7-2.0/NOPB has a maximum average temperature coefficient of 100 ppm/°C over −40°C to +85°C. This means its output voltage drift remains within ±0.21 mV/°C, supporting repeatable performance in thermally varying industrial environments without active compensation.
Which package type does LM4040EIM7-2.0/NOPB use?
LM4040EIM7-2.0/NOPB uses the SC70-5 (DCK) package - a 5-pin surface-mount outline measuring 2.00 mm × 1.25 mm. Pins 4 and 5 are no-connect; pin 1 is anode, pin 2 is cathode, and pin 3 is an optional EMI-reduction terminal.
Can LM4040EIM7-2.0/NOPB be used in automotive applications?
LM4040EIM7-2.0/NOPB is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, TI offers the LM4040-N-Q1 variant (e.g., LM4040EQM7-2.0/NOPB), which meets AEC-Q100 Grade 1 (−40°C to +125°C) and includes extended reliability testing.
LM4040EIM7-2.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040EIM7-2.0/NOPB FAQ
1.How can I place an order for LM4040EIM7-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040EIM7-2.0/NOPB 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 LM4040EIM7-2.0/NOPB reliable?
The price and inventory of LM4040EIM7-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040EIM7-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040EIM7-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040EIM7-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040EIM7-2.0/NOPB?
LM4040EIM7-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040EIM7-2.0/NOPB 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 LM4040EIM7-2.0/NOPB?
For technical support, including LM4040EIM7-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040EIM7-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040EIM7-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040EIM7-2.0/NOPB 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 LM4040EIM7-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040EIM7-2.0/NOPB?
All LM4040EIM7-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040EIM7-2.0/NOPB, 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 LM4040EIM7-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040EIM7-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040EIM7-2.0/NOPB Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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