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Texas Instruments LM4040AIM3-8.2/NOPB
- Part No.:
- LM4040AIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040AIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,476
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Product details
Overview
LM4040AIM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference with 8.192 V nominal reverse breakdown voltage, ±0.1% initial tolerance (A grade), 100 ppm/°C max temperature coefficient, and operates from 91 μA to 15 mA over −40°C to +85°C. It delivers stable reference voltage in space-constrained analog signal chains and ADC biasing circuits.
For engineers reviewing the LM4040AIM3-8.2/NOPB datasheet, LM4040AIM3-8.2/NOPB pinout, LM4040AIM3-8.2/NOPB application, or LM4040AIM3-8.2/NOPB equivalent, this page provides verified pin functions, real-world operating current ranges, thermal hysteresis (0.08%), noise performance (35 μVrms), and validated alternative parts for industrial and automotive-grade designs.
Technical Context
The LM4040AIM3-8.2/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.1% accuracy at 25°C and incorporates bandgap curvature correction for low drift. Its shunt topology requires no output capacitor and remains stable with capacitive loads up to 10 nF.
It features low dynamic impedance (0.3–0.8 Ω at 1 mA), wide operating current range (91–15,000 μA), and maintains 8.192 V output across industrial temperature range with ≤±19 mV total overtemperature tolerance (±0.1% + 100 ppm/°C × 65°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - sets precise bias point for ADCs, DACs, and comparators |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables high-accuracy calibration without post-manufacture trimming |
| Temp Coefficient | ≤100 ppm/°C - ensures <±0.53 mV drift over −40°C to +85°C ambient |
| Min Operating Current | 91 μA - supports ultra-low-power battery operation while maintaining regulation |
| Max Operating Current | 15 mA - allows robust load drive and transient response in noisy environments |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - minimizes added error in precision measurement front-ends |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling between −40°C and +125°C |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Anode grounded, cathode supplies regulated voltage, third pin (NC) must float or connect to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current sink / output node | Connects to load and series resistor; regulates voltage by sinking variable current |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference for output voltage |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 2 per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables single-component reference design with guaranteed stability into capacitive loads up to 10 nF |
| Zener-zap voltage trim | Ensures ±0.1% initial accuracy at wafer level, eliminating need for board-level calibration |
| Low dynamic impedance | 0.3–0.8 Ω at 1 mA - suppresses ripple and improves PSRR in supply-sensitive applications |
| Wide current range | 91 μA to 15 mA operation - supports both microamp sensor interfaces and milliamp data acquisition systems |
| Stable over temperature | ≤±19 mV total deviation from 8.192 V across −40°C to +85°C - meets industrial-grade accuracy requirements |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter using 16-bit SAR ADC with internal reference buffer. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V full-scale reference for ADC conversion. Use Value: Enables 16-bit linearity (±1 LSB) without external trimming, leveraging ±0.1% initial tolerance and 35 μVrms noise. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision voltage reference for op-amp-based current-to-voltage conversion and ADC biasing. Use Value: Maintains <±0.05% gain error over temperature due to 100 ppm/°C TC and 0.08% thermal hysteresis. |
| Energy Monitoring Meters | Automotive Body Control Modules |
Use Scenario: Smart electricity meter with isolated metrology IC requiring accurate voltage scaling. IC Role / Device Role / Timing Role: Primary shunt reference for voltage channel scaling and calibration offset compensation. Use Value: Delivers long-term stability (120 ppm drift over 1000 hrs) and low-load regulation error (<1 mV from 91 μA to 1 mA). |
Use Scenario: In-cabin temperature sensor interface in AEC-Q100-compliant BCM. IC Role / Device Role / Timing Role: Stable reference for thermistor biasing and ADC reference in extended temperature range. Use Value: Qualified to AEC-Q100 Grade 3 (−40°C to +85°C), supporting automotive qualification with verified 8.192 V accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C82IDBZR | 8.192 V, ±0.5% initial tolerance, 150 ppm/°C max TC, SOT-23 package | Lower accuracy and higher drift; suitable for cost-sensitive non-critical references | Select when ±0.5% tolerance and relaxed TC meet system requirements and BOM cost is prioritized |
| REF43FH82IDBVR | 8.192 V, ±0.05% initial tolerance, 3 ppm/°C max TC, SOIC-8 package | Higher precision, lower drift, larger footprint, higher cost; requires external capacitor | Choose for metrology-grade accuracy where 3 ppm/°C TC and 0.05% tolerance justify SOIC-8 layout and cost |
Compared with TL4050C82IDBZR and REF43FH82IDBVR, the LM4040AIM3-8.2/NOPB uniquely balances A-grade precision (±0.1%), micropower operation (91 μA min), and capacitor-free stability in the compact SOT-23 footprint-making it optimal for space- and power-constrained industrial sensors and portable test equipment.
Availability
LM4040AIM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy monitoring meters requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4040AIM3-8.2/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 high-volume manufacturing.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and industrial measurement systems where accuracy, stability, and ease of use are critical.
FAQ
What is the exact reverse breakdown voltage of LM4040AIM3-8.2/NOPB?
The LM4040AIM3-8.2/NOPB has a nominal reverse breakdown voltage of 8.192 V, specified at 100 μA test current. This value is trimmed at wafer level to ensure ±0.1% initial accuracy (±8.2 mV) at 25°C, and remains within ±19 mV over the full −40°C to +85°C industrial temperature range.
Does LM4040AIM3-8.2/NOPB require an external capacitor for stability?
No, the LM4040AIM3-8.2/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to 10 nF, simplifying layout and reducing BOM count in compact PCB designs.
What is the minimum operating current for LM4040AIM3-8.2/NOPB?
The LM4040AIM3-8.2/NOPB requires a minimum operating current of 91 μA at 25°C to maintain regulation. This value increases slightly over temperature but remains below 100 μA across the full −40°C to +85°C range, enabling ultra-low-power operation.
Is LM4040AIM3-8.2/NOPB qualified for automotive applications?
The LM4040AIM3-8.2/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-Q1 variant (e.g., LM4040QAIM3-8.2/NOPB), which is explicitly qualified to AEC-Q100 Grade 3.
How does thermal hysteresis affect LM4040AIM3-8.2/NOPB performance?
The LM4040AIM3-8.2/NOPB exhibits 0.08% thermal hysteresis - the maximum voltage shift observed when cycling between −40°C and +125°C and returning to 25°C. For the 8.192 V output, this equals ±6.6 mV, ensuring repeatable calibration after thermal stress.
LM4040AIM3-8.2/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 130µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 95 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040AIM3-8.2/NOPB FAQ
1.How can I place an order for LM4040AIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040AIM3-8.2/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 LM4040AIM3-8.2/NOPB reliable?
The price and inventory of LM4040AIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040AIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040AIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040AIM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040AIM3-8.2/NOPB?
LM4040AIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040AIM3-8.2/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 LM4040AIM3-8.2/NOPB?
For technical support, including LM4040AIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040AIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4040AIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040AIM3-8.2/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 LM4040AIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040AIM3-8.2/NOPB?
All LM4040AIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040AIM3-8.2/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 LM4040AIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4040AIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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