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Texas Instruments LM4040BIM7-2.5/NOPB
- Part No.:
- LM4040BIM7-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040BIM7-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,098
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Product details
Overview
LM4040BIM7-2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-3 package, delivering a stable 2.5 V reverse breakdown voltage with ±0.2% initial tolerance (Grade B) 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 requires no output capacitor.
For engineers reviewing the LM4040BIM7-2.5/NOPB datasheet, LM4040BIM7-2.5/NOPB pinout, LM4040BIM7-2.5/NOPB application, or LM4040BIM7-2.5/NOPB equivalent, this device serves as a space-constrained, low-noise, high-stability reference for analog signal chains in industrial data acquisition, field transmitters, and automotive sensor interfaces where tight voltage accuracy and thermal stability are critical.
Technical Context
The LM4040BIM7-2.5/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.2% initial accuracy and incorporates bandgap-derived temperature drift curvature correction. Its low dynamic impedance (0.3–0.8 Ω) and capacitive-load tolerance enable stable operation without external compensation across its full 60 μA–15 mA operating current range.
Designed for shunt-mode regulation, it functions with anode grounded and cathode supplying regulated voltage via series resistor. The SC70-3 package supports high-density PCB layouts while maintaining thermal performance (RθJA = 267°C/W) and AEC-Q100 Grade 3 qualification for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage, fixed and factory-trimmed - eliminates need for external adjustment circuitry |
| Initial Tolerance | ±0.2% at 25°C (Grade B) - enables high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤100 ppm/°C (max) over −40°C to +85°C - ensures <±19 mV total drift across industrial range |
| Noise (10 Hz–10 kHz) | 35 μVrms typical - minimizes contribution to system noise floor in precision measurement |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current reference buffering |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA - maintains regulation stability under fast load transients |
| Thermal Hysteresis | 0.08% - guarantees repeatability after thermal cycling between −40°C and +125°C |
Pinout & Package
LM4040BIM7-2.5/NOPB is housed in a 3-pin SC70 (DCK) package (2.00 mm × 1.25 mm body), with pin 1 = Anode (ground), pin 2 = Cathode (output), pin 3 = NC (no connect, must float or tie to anode per TI recommendation for EMI suppression).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must be connected to system ground; establishes return path for shunt current |
| Cathode (Pin 2) | Shunt output / voltage reference node | Delivers regulated 2.5 V when biased with external series resistor; connects to load or ADC reference input |
| NC (Pin 3) | No-connect terminal | Internally unconnected; TI recommends floating or tying to anode in high-EMI environments to reduce noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with any capacitive load up to 10 nF - simplifies layout and reduces BOM count |
| Zener-zap voltage trim | Factory-trimmed accuracy better than ±0.2% at 25°C - eliminates post-manufacturing calibration |
| Bandgap temperature drift correction | Curvature-compensated design achieves ≤100 ppm/°C TC - outperforms standard Zener references |
| Low quiescent current | 60 μA minimum operating current - enables battery-powered field transmitter operation for >10 years |
| AEC-Q100 Grade 3 qualified | Rated for −40°C to +85°C ambient operation - certified for automotive sensor modules and infotainment power rails |
Applications
| Industrial Data Acquisition | Automotive Sensor Interface |
|---|---|
|
Use Scenario: High-resolution 16-bit ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.5 V reference for SAR ADC conversion. Use Value: ±0.2% initial tolerance and 100 ppm/°C TC ensure <±0.01% full-scale error across temperature, meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Reference for pressure and temperature sensors in engine control units (ECUs) and ADAS camera modules. IC Role / Device Role / Timing Role: Precision bias source for ratiometric sensor excitation and ADC reference in AEC-Q100-compliant systems. Use Value: Qualified to Grade 3 (−40°C to +85°C) and 0.08% thermal hysteresis guarantee repeatable sensor readings after thermal cycling in under-hood environments. |
| Field Transmitter | Energy Infrastructure Monitoring |
|
Use Scenario: 4–20 mA loop-powered smart transmitter for flow and level sensing in hazardous industrial zones. IC Role / Device Role / Timing Role: Low-power shunt reference enabling microamp-level standby current while maintaining 2.5 V reference integrity. Use Value: 60 μA minimum operating current allows operation from 3.3 V supply with >100 kΩ series resistance, preserving loop compliance margin. |
Use Scenario: Voltage reference in smart meter metrology ICs and grid-edge monitoring devices deployed in outdoor substations. IC Role / Device Role / Timing Role: Stable reference for energy measurement ASICs requiring long-term drift stability and EMI resilience. Use Value: 120 ppm long-term stability (1000 hrs) and NC pin tie-to-anode option suppress switching noise from nearby DC-DC converters in compact meter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B25IDBZR | 2.5 V, ±0.2% initial tolerance, SOT-23-3, 75 ppm/°C TC, 20 μVrms noise | Lower noise and tighter TC, but higher minimum current (75 μA) and no AEC-Q100 qualification | Preferred for ultra-low-noise instrumentation where automotive qualification is not required |
| MAX6002BESA+ | 2.5 V, ±0.2% initial tolerance, SO-8, 50 ppm/°C TC, 25 μVrms noise, 50 μA min current | SO-8 package limits density; lower TC and current but larger footprint and no automotive grade | Selected when board space permits and sub-50 ppm/°C TC is mandatory for metrology-grade accuracy |
Compared with TL4050B25IDBZR and MAX6002BESA+, the LM4040BIM7-2.5/NOPB offers AEC-Q100 Grade 3 qualification and SC70-3 size for automotive and space-constrained industrial use, while trading slightly higher noise for guaranteed EMI robustness via the NC pin option.
Availability
LM4040BIM7-2.5/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interface, and field transmitter applications requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM4040BIM7-2.5/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-qualified components.
The LM4040-N product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications in industrial automation, automotive sensing, and energy infrastructure - emphasizing stability, low noise, and qualification rigor.
FAQ
What is the maximum operating current for LM4040BIM7-2.5/NOPB?
The LM4040BIM7-2.5/NOPB supports a maximum operating current of 15 mA across its full temperature range. This limit ensures safe power dissipation within the SC70 package's 241 mW rating at 25°C ambient, with appropriate derating above that temperature per its 267°C/W junction-to-ambient thermal resistance.
Does LM4040BIM7-2.5/NOPB require an external capacitor for stability?
No, the LM4040BIM7-2.5/NOPB does not require an external output capacitor. Its internal design provides inherent stability with capacitive loads up to 10 nF, eliminating the need for external compensation and reducing layout complexity in compact PCBs.
What is the function of Pin 3 (NC) on LM4040BIM7-2.5/NOPB?
Pin 3 is a no-connect terminal in the SC70-3 package of LM4040BIM7-2.5/NOPB. Texas Instruments recommends leaving it floating or connecting it to the anode (Pin 1) in high-EMI environments - such as near switching regulators or transformers - to reduce noise coupling into the reference node.
Is LM4040BIM7-2.5/NOPB qualified for automotive applications?
Yes, LM4040BIM7-2.5/NOPB is AEC-Q100 Grade 3 qualified, rated for operation from −40°C to +85°C ambient temperature. It meets stress testing requirements for automotive sensor modules, body electronics, and infotainment subsystems, though not extended Grade 1 (−40°C to +125°C).
How does the temperature coefficient affect LM4040BIM7-2.5/NOPB accuracy over temperature?
The LM4040BIM7-2.5/NOPB has a maximum average temperature coefficient of 100 ppm/°C. Over the industrial range (−40°C to +85°C), this contributes ≤±19 mV (±0.76%) additional error beyond its ±0.2% room-temperature tolerance - a total worst-case deviation of ±0.96% at extremes.
LM4040BIM7-2.5/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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040BIM7-2.5/NOPB FAQ
1.How can I place an order for LM4040BIM7-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM7-2.5/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 LM4040BIM7-2.5/NOPB reliable?
The price and inventory of LM4040BIM7-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM7-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM7-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM7-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM7-2.5/NOPB?
LM4040BIM7-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM7-2.5/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 LM4040BIM7-2.5/NOPB?
For technical support, including LM4040BIM7-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM7-2.5/NOPB requirements.
6.How does Aetrix verify that LM4040BIM7-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM7-2.5/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 LM4040BIM7-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM7-2.5/NOPB?
All LM4040BIM7-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM7-2.5/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 LM4040BIM7-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM7-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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