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Texas Instruments LM4040DIM3-8.2/NOPB
- Part No.:
- LM4040DIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
LM4040DIM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a fixed 8.2 V reverse breakdown voltage with ±1% initial tolerance (Grade D), 100 ppm/°C max temperature coefficient, and stable operation from 91 μA to 15 mA supply current. It serves as a compact, capacitor-free reference for analog-to-digital converters and sensor signal conditioning in industrial and automotive systems.
For engineers reviewing the LM4040DIM3-8.2/NOPB datasheet, LM4040DIM3-8.2/NOPB pinout, LM4040DIM3-8.2/NOPB application, or LM4040DIM3-8.2/NOPB equivalent, key selection criteria include its 8.2 V output accuracy over −40°C to +85°C, low 35 μVrms noise (10 Hz–10 kHz), no-output-capacitor requirement, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4040DIM3-8.2/NOPB uses Zener-zap trimming during wafer sort to achieve ±1% initial voltage tolerance at 25°C and integrates bandgap-derived temperature drift curvature correction. Its low dynamic impedance (≤1.1 Ω at 1 mA) ensures minimal output voltage shift under varying load currents.
Designed as a two-terminal shunt device, it operates without an external stabilization capacitor and tolerates arbitrary capacitive loads-enabling direct connection to ADC reference inputs or op-amp feedback networks without stability concerns across its full 91 μA–15 mA operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.2 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±1% at 25°C (Grade D), translating to ±82 mV absolute error |
| Temp Coefficient | ≤100 ppm/°C max over −40°C to +85°C, contributing ≤±53 mV drift across full range |
| Operating Current | 91 μA minimum to 15 mA maximum-supports ultra-low-power and high-current reference designs |
| Output Noise | 35 μVrms (10 Hz–10 kHz), suitable for 16-bit+ data acquisition systems |
| Dynamic Impedance | ≤1.1 Ω at 1 mA, ensuring <1 mV output shift per 1 mA load change |
| Thermal Hysteresis | 0.08% (≈6.6 mV), limiting repeatability error after thermal cycling |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, 1.0 mm height, surface-mount, JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connected to supply rail; voltage develops across external series resistor and this pin |
| Anode (Pin 2) | Ground reference terminal | Must be connected to system ground; defines 0 V reference for 8.2 V output |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to Anode (Pin 2) per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free operation | Eliminates need for external stabilization capacitor while maintaining stability with any capacitive load |
| Wide current range | Functional from 91 μA (ultra-low-power sensors) to 15 mA (high-drive reference buffers) |
| Low temperature drift | 100 ppm/°C max ensures ≤±53 mV total drift over −40°C to +85°C ambient |
| High ESD robustness | ±2000 V HBM rating enables safe handling in standard manufacturing environments |
| Automotive qualification | AEC-Q100 Grade 3 qualified (−40°C to +85°C), supporting under-hood and infotainment applications |
Applications
| Industrial Data Acquisition | Automotive Sensor Interface |
|---|---|
|
Use Scenario: High-resolution 16-bit ADC reference in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 8.2 V reference for SAR ADC conversion. Use Value: Enables ±0.0015% full-scale accuracy by minimizing reference-induced error sources including noise and thermal drift. |
Use Scenario: Reference for pressure and temperature sensor signal conditioning in engine control units (ECUs). IC Role / Device Role / Timing Role: Precision shunt reference supplying excitation and scaling for ratiometric bridge sensors. Use Value: Maintains sensor linearity and offset stability across −40°C to +85°C without calibration rework. |
| Energy Infrastructure Monitoring | Audio/Video Equipment Calibration |
|
Use Scenario: Voltage reference for isolation amplifier feedback in smart meter current sensing circuits. IC Role / Device Role / Timing Role: Stable 8.2 V reference enabling accurate current measurement via galvanically isolated delta-sigma modulators. Use Value: Supports IEC 62053-21 Class 0.2 accuracy compliance with <10 ppm/°C effective drift contribution. |
Use Scenario: Reference source for DAC-based analog output stages in professional audio mixers. IC Role / Device Role / Timing Role: Low-noise shunt reference setting DC bias and gain scaling for op-amp output drivers. Use Value: 35 μVrms noise prevents audible hiss in 24-bit audio paths; SOT-23 footprint saves board area near sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Adjustable 2.495 V reference; requires two external resistors to set 8.2 V; higher 0.2% initial tolerance at 25°C | Not pin-compatible; needs redesign of feedback network; lacks AEC-Q100 qualification | Select when adjustable output or higher current drive (>100 mA) is required; avoid for space-constrained or automotive use |
| MAX6008AEUR+T | Fixed 8.192 V output; ±0.1% initial tolerance; SC70-3 package; 75 ppm/°C tempco; 50 μVrms noise | Same 8.2 V function but tighter tolerance and lower drift; smaller SC70 footprint; not AEC-Q100 qualified | Prefer for high-precision industrial instrumentation where automotive qualification is unnecessary and board space is critical |
Compared with TL431CDBZR and MAX6008AEUR+T, LM4040DIM3-8.2/NOPB offers AEC-Q100 Grade 3 qualification, true 8.2 V fixed output without external components, and lowest noise among the three-making it optimal for automotive and high-fidelity industrial references where layout simplicity and EMI resilience matter.
Availability
LM4040DIM3-8.2/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interface, and energy infrastructure monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM4040DIM3-8.2/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 automotive-grade component validation.
The LM4040-N series was developed to deliver high-accuracy, low-drift shunt references in miniature packages for space-constrained industrial and automotive applications-emphasizing ease of use, capacitor-free stability, and wide operating current flexibility.
FAQ
What is the exact output voltage and tolerance of LM4040DIM3-8.2/NOPB?
The LM4040DIM3-8.2/NOPB provides a nominal reverse breakdown voltage of 8.2 V with ±1% initial tolerance at 25°C (Grade D). Over the industrial temperature range (−40°C to +85°C), total voltage error remains within ±8.2 V × 1.98% = ±162 mV, including both initial tolerance and temperature drift contributions.
Does LM4040DIM3-8.2/NOPB require an external capacitor for stability?
No, the LM4040DIM3-8.2/NOPB does not require an external output capacitor. Its internal design ensures unconditional stability even with arbitrary capacitive loads-enabling direct connection to ADC reference pins or op-amp inputs without risk of oscillation or settling degradation.
What is the minimum operating current for LM4040DIM3-8.2/NOPB?
The LM4040DIM3-8.2/NOPB requires a minimum operating current of 91 μA at 25°C to maintain regulation. This value increases slightly at temperature extremes, reaching up to 100 μA over the full −40°C to +85°C range, as specified in Section 5.3 of the TI datasheet.
Is LM4040DIM3-8.2/NOPB qualified for automotive applications?
Yes, LM4040DIM3-8.2/NOPB is AEC-Q100 Grade 3 qualified (−40°C to +85°C), making it suitable for non-critical automotive applications such as cabin electronics, body control modules, and sensor interfaces-not for safety-critical powertrain or ADAS functions requiring Grade 0 or 1.
What package type and pin configuration does LM4040DIM3-8.2/NOPB use?
The LM4040DIM3-8.2/NOPB uses the SOT-23-3 (DBZ) package with three terminals: Cathode (Pin 1), Anode (Pin 2), and NC (Pin 3). Pin 3 is internally unconnected and must either float or be tied to Pin 2 per TI's EMI mitigation recommendation.
LM4040DIM3-8.2/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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 130µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 96 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3-8.2/NOPB FAQ
1.How can I place an order for LM4040DIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3-8.2/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 LM4040DIM3-8.2/NOPB reliable?
The price and inventory of LM4040DIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3-8.2/NOPB transactions.
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4.How is shipping managed for LM4040DIM3-8.2/NOPB?
LM4040DIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3-8.2/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 LM4040DIM3-8.2/NOPB?
For technical support, including LM4040DIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3-8.2/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 LM4040DIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3-8.2/NOPB?
All LM4040DIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3-8.2/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 LM4040DIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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