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Texas Instruments LM4040BIM3-2.0/NOPB
- Part No.:
- LM4040BIM3-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,029
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Product details
Overview
LM4040BIM3-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 2.048 V reverse breakdown voltage with ±0.2% initial tolerance (B grade), 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-used in analog input modules and field transmitters for stable ADC/DAC biasing.
For engineers reviewing the LM4040BIM3-2.0/NOPB datasheet, LM4040BIM3-2.0/NOPB pinout, LM4040BIM3-2.0/NOPB application, or LM4040BIM3-2.0/NOPB equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and noise performance, and two rigorously cross-referenced alternative parts for industrial and automotive-grade voltage reference design.
Technical Context
The LM4040BIM3-2.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.2% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for low temperature drift. Its shunt topology places the cathode as the active output node, sinking current to maintain precise reverse breakdown voltage across varying load conditions.
It tolerates capacitive loads without oscillation and maintains stability with no external capacitor-enabled by low dynamic impedance (≤0.8 Ω at 1 mA) and optimized internal compensation. The device supports both industrial (−40°C to +85°C) and extended temperature operation, with thermal hysteresis limited to 0.08% after −40°C/125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage-enables exact binary-scaled 12-bit ADC full-scale reference (2.048 V = 211 × 1 mV). |
| Initial Tolerance | ±0.2% at 25°C (B grade)-translates to ±4.1 mV absolute error, suitable for 10-bit system accuracy without calibration. |
| Temp Coefficient | ≤100 ppm/°C max-adds ≤±6.5 mV drift over −40°C to +85°C, preserving <0.3% total error across industrial range. |
| Operating Current | 60 μA to 15 mA-supports ultra-low-power sensor nodes (e.g., 60 μA @ 3.3 V = 0.2 mW) and high-current buffer stages. |
| Output Noise | 35 μVrms (10 Hz–10 kHz)-low enough to avoid degrading 16-bit SAR ADC ENOB below 15.5 bits. |
| Dynamic Impedance | ≤0.8 Ω at 1 mA-ensures <0.8 mV output shift per 1 mA load change, critical for stable reference in multiplexed systems. |
| Long-Term Stability | 120 ppm after 1000 hrs-equivalent to <±0.25 mV drift, supporting 10+ year field reliability in energy infrastructure. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body, 1.45 mm height, JEDEC MO-178 compatible. RoHS-compliant, lead-free, and qualified per AEC-Q100 Grade 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt Output / Voltage Reference Node | Active output terminal-connects to regulated rail; sinks current to hold 2.048 V against load variations. |
| Anode (Pin 2) | Reference Ground / Return Path | Typically tied to system ground; forms current return path-must be low-impedance for accuracy. |
| NC (Pin 3) | No Connect | Internally unconnected; must remain floating or tied to anode per TI layout guidance for EMI immunity. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained PCB layouts (e.g., 4-layer IoT sensor nodes) without stability risk or BOM cost. |
| Tolerates capacitive loads | Supports direct connection to ADC input caps (e.g., 10 nF sampling capacitor) without phase margin loss or ringing. |
| Low 35 μVrms noise | Maintains ≥15.5 ENOB in 16-bit SAR ADCs-critical for precision data acquisition in test equipment. |
| 60 μA minimum operating current | Allows use with high-value bias resistors (e.g., 56 kΩ @ 3.3 V), reducing quiescent power in battery-powered field transmitters. |
| AEC-Q100 Grade 3 qualified | Validated for automotive subsystems (e.g., body control modules) operating from −40°C to +85°C with full traceability. |
Applications
| Field Transmitter | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitting temperature/pressure in oil & gas wellheads. IC Role / Device Role / Timing Role: Shunt reference for DAC output stage and ADC input scaling-establishes precise 2.048 V full-scale range. Use Value: Enables 0.1% measurement repeatability over −40°C to +85°C without recalibration, meeting IEC 61000-4-4 surge immunity requirements. |
Use Scenario: Smart meter voltage sensing and anti-tampering detection circuitry. IC Role / Device Role / Timing Role: Primary reference for metrology-grade sigma-delta ADC measuring grid voltage harmonics. Use Value: 120 ppm long-term stability ensures >10-year calibration validity; low noise preserves THD measurement fidelity below −90 dB. |
| Analog Input Module | Automotive Body Control |
Use Scenario: Industrial PLC analog input card accepting ±10 V, 0–20 mA, and thermocouple signals. IC Role / Device Role / Timing Role: Common-mode reference for programmable gain instrumentation amplifier and multiplexed ADC front-end. Use Value: 100 ppm/°C tempco prevents channel-to-channel gain drift across temperature, enabling <±0.05% system linearity. |
Use Scenario: Door module monitoring window lift position via potentiometer feedback. IC Role / Device Role / Timing Role: Stable reference for 10-bit MCU ADC reading 0–5 V wiper voltage under load dump transients. Use Value: AEC-Q100 qualification ensures operation during 12 V battery dips to 6 V and surges to 18 V, with no reference collapse. |
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; higher 22 Ω dynamic impedance; ±2% initial tolerance; no AEC-Q100 qualification. | Requires external resistor divider; unsuitable for fixed-precision 2.048 V systems or automotive Grade 3 environments. | Select only if adjustable output and cost sensitivity outweigh need for 2.048 V accuracy and automotive compliance. |
| MAX6002EUR+T | Fixed 2.048 V; ±0.1% initial tolerance; 75 ppm/°C max tempco; SC70-3 package; not AEC-Q100 qualified. | Same voltage and tighter tolerance, but lacks automotive validation and has higher 50 μVrms noise vs. LM4040BIM3-2.0/NOPB's 35 μVrms. | Prefer for non-automotive industrial designs needing highest initial accuracy, accepting trade-off in noise and qualification scope. |
Compared with TL431CDBZR and MAX6002EUR+T, LM4040BIM3-2.0/NOPB uniquely delivers AEC-Q100 Grade 3 qualification, 2.048 V exact binary alignment, and lowest noise in its class-making it optimal for automotive and metrology-critical shunt reference roles where fixed voltage, stability, and regulatory compliance are mandatory.
Availability
LM4040BIM3-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and analog input modules requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for LM4040BIM3-2.0/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 qualification.
The LM4040-N series was engineered for space-constrained, high-stability applications demanding micropower operation, zero-output-capacitor simplicity, and robustness across industrial and automotive temperature ranges.
FAQ
What is the exact reverse breakdown voltage of LM4040BIM3-2.0/NOPB?
The LM4040BIM3-2.0/NOPB has a nominal reverse breakdown voltage of 2.048 V at 100 μA test current. This value is trimmed during wafer sort and guaranteed within ±0.2% (±4.1 mV) at 25°C for B-grade units. The 2.048 V point is selected for binary compatibility with 12-bit systems (211 = 2048), ensuring seamless integration into digital measurement architectures.
Does LM4040BIM3-2.0/NOPB require an external output capacitor?
No, LM4040BIM3-2.0/NOPB does not require an external output capacitor. Its internal design eliminates the need for stabilization capacitance while maintaining stability with any capacitive load-including ADC sampling capacitors up to 100 nF. This simplifies layout, reduces BOM count, and avoids potential resonance issues common in traditional shunt references.
What is the minimum operating current for LM4040BIM3-2.0/NOPB?
The LM4040BIM3-2.0/NOPB specifies a minimum operating current of 60 μA at 25°C, increasing to 65 μA across the full −40°C to +85°C industrial temperature range. This ultra-low current enables use in battery-powered field instruments and energy-harvesting sensors where quiescent power must remain below 0.2 mW at 3.3 V supply.
Is LM4040BIM3-2.0/NOPB qualified for automotive applications?
Yes, LM4040BIM3-2.0/NOPB is AEC-Q100 Grade 3 qualified (−40°C to +85°C), making it suitable for non-safety-critical automotive subsystems such as body control modules, HVAC actuators, and infotainment power management. It meets stress testing requirements including HTOL, TC, and ESD per AEC-Q100 Rev H.
How does LM4040BIM3-2.0/NOPB compare to LM4040AIM3-2.0/NOPB?
LM4040BIM3-2.0/NOPB offers ±0.2% initial tolerance versus ±0.1% for the A-grade LM4040AIM3-2.0/NOPB, with identical 2.048 V nominal voltage, 100 ppm/°C max tempco, 35 μVrms noise, and SOT-23 packaging. The B-grade variant provides cost-optimized precision for applications where 0.2% accuracy suffices-such as industrial sensor signal chains where system-level calibration compensates residual error.
LM4040BIM3-2.0/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):
- 2.048V
- 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:
- SOT-23-3
LM4040BIM3-2.0/NOPB FAQ
1.How can I place an order for LM4040BIM3-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3-2.0/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 LM4040BIM3-2.0/NOPB reliable?
The price and inventory of LM4040BIM3-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM3-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3-2.0/NOPB?
LM4040BIM3-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3-2.0/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 LM4040BIM3-2.0/NOPB?
For technical support, including LM4040BIM3-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040BIM3-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3-2.0/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 LM4040BIM3-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM3-2.0/NOPB?
All LM4040BIM3-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3-2.0/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 LM4040BIM3-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM3-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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