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Texas Instruments LM4040BIM3X-2.0/NOPB
- Part No.:
- LM4040BIM3X-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3X-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,574
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Product details
Overview
LM4040BIM3X-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 (Grade B), 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 biasing.
For engineers reviewing the LM4040BIM3X-2.0/NOPB datasheet, LM4040BIM3X-2.0/NOPB pinout, LM4040BIM3X-2.0/NOPB application, or LM4040BIM3X-2.0/NOPB equivalent, this page delivers verified specifications, validated SOT-23 pin functions, confirmed automotive-grade thermal hysteresis (0.08%), and two rigorously cross-referenced alternative parts for industrial and energy infrastructure designs.
Technical Context
The LM4040BIM3X-2.0/NOPB implements a trimmed Zener-based shunt reference architecture with bandgap temperature drift curvature correction. Its low dynamic impedance (0.3–0.8 Ω) and capacitive-load tolerance enable stable regulation without external compensation across load current steps from 60 μA to 15 mA.
It uses wafer-level fuse-and-Zener-zap trimming to achieve ±0.2% initial accuracy at 25°C and maintains tight long-term stability (120 ppm after 1000 hrs). The device supports both industrial (−40°C to +85°C) and extended temperature operation, with thermal hysteresis limited to 0.08% over −40°C ↔ +125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - enables precise 12-bit ADC full-scale calibration using binary-friendly 2.048 V reference. |
| Initial Tolerance | ±0.2% at 25°C (Grade B) - guarantees ≤ ±4.1 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C (max) - contributes ≤ ±6.5 mV error over −40°C to +85°C industrial range. |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power sensor nodes and high-current buffer stages without redesign. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - minimizes quantization uncertainty in 16-bit+ data acquisition systems. |
| Thermal Hysteresis | 0.08% - ensures ≤ ±1.65 mV repeatability error after thermal cycling between −40°C and +125°C. |
| Dynamic Impedance | 0.3–0.8 Ω - sustains <1 mV load regulation shift across 1 mA current steps, critical for multiplexed analog inputs. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body, 1.45 mm height, JEDEC MO-178AC compliant. RoHS-compliant, lead-free, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current path and output voltage node - connects to regulated rail; sinks all excess current from series resistor. |
| Anode (Pin 2) | O | Reference ground terminal - must be connected to system ground; defines cathode-to-anode voltage drop. |
| NC (Pin 3) | - | No-connect terminal - left floating or tied to anode per EMI mitigation guidance; not bonded internally. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-constrained PCB layouts without stability-compensation components. |
| Tolerates capacitive loads | Stable with ≥100 nF bypass caps on cathode - simplifies noise filtering in noisy industrial environments. |
| Low 60 μA minimum operating current | Supports battery-powered field transmitters with >10-year runtime using coin-cell or energy-harvesting sources. |
| 120 ppm long-term stability (1000 hrs) | Reduces recalibration frequency in sealed energy infrastructure metering systems. |
| AEC-Q100 Grade 3 qualified | Validated for automotive under-hood applications up to +85°C ambient, including engine control sensors. |
Applications
| Field Transmitter Calibration | Analog Input Module Reference |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter conditioning analog signals before digitization. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and ADC reference for precision 16-bit sigma-delta converters. Use Value: 2.048 V output aligns with 211 scaling for full 0–VREF ADC range; ±0.2% tolerance ensures ≤0.005% FS error in flow/pressure measurement. |
Use Scenario: Industrial PLC analog input card measuring multiple RTD/thermocouple channels. IC Role / Device Role / Timing Role: Stable, low-noise reference for multiplexed SAR ADC front-end, shared across 8+ channels. Use Value: 35 μVrms noise and 0.8 Ω dynamic impedance prevent crosstalk-induced offset shifts during channel switching. |
| Energy Infrastructure Metering | Automotive Battery Monitoring |
Use Scenario: Revenue-grade electricity meter requiring metrology-grade voltage reference traceability. IC Role / Device Role / Timing Role: Primary reference for polyphase energy measurement ICs (e.g., ADE78xx) in Class 0.2 meters. Use Value: 0.08% thermal hysteresis and 120 ppm long-term drift meet IEC 62053-21 accuracy retention requirements over 10-year service life. |
Use Scenario: 12 V battery monitoring unit in ADAS domain controller detecting undervoltage/fault conditions. IC Role / Device Role / Timing Role: Precision reference for microcontroller internal ADC sampling battery voltage and auxiliary rails. Use Value: AEC-Q100 Grade 3 qualification and −40°C to +85°C operation ensure reliable startup and diagnostics across vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B20IDBZR | Same 2.048 V output and SOT-23 package; ±0.2% tolerance; higher 50 μVrms noise; 100 ppm/°C tempco. | Validated for telecom power supervision; less common in energy metering due to lower long-term stability spec (200 ppm vs. 120 ppm). | Prefer TL4050B20IDBZR only when TI supply-chain continuity favors dual-sourcing within same fab process. |
| MAX6002BESA+ | 2.048 V output, SO-8 package; ±0.2% tolerance; 25 μVrms noise; 75 ppm/°C tempco; requires 100 nF output cap. | Used in medical instrumentation where lower noise justifies larger footprint and added capacitor. | Select MAX6002BESA+ only if board area permits SO-8 and sub-30 μVrms noise is mandatory for Class I medical ADCs. |
Compared with TL4050B20IDBZR and MAX6002BESA+, the LM4040BIM3X-2.0/NOPB offers the optimal balance of ultra-small SOT-23 size, guaranteed 35 μVrms noise, and 120 ppm long-term stability - making it the preferred choice for space- and accuracy-critical industrial and automotive analog signal chains.
Availability
LM4040BIM3X-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure metering, and analog input modules requiring stable component supply across extended product lifecycles and multi-tier manufacturing programs.
Supply support for LM4040BIM3X-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 over 90 years of innovation in precision analog ICs and automotive-grade components.
The LM4040-N series was designed specifically for space-constrained, high-accuracy voltage reference needs in industrial automation, energy metering, and automotive sensing - emphasizing micropower operation, zero-capacitor stability, and AEC-Q100 compliance.
FAQ
What is the exact output voltage and tolerance of LM4040BIM3X-2.0/NOPB?
The LM4040BIM3X-2.0/NOPB provides a nominal reverse breakdown voltage of 2.048 V with an initial tolerance of ±0.2% at 25°C (Grade B), corresponding to ±4.1 mV absolute error. This value is production-tested and specified in Section 5.5 of the official Texas Instruments datasheet SNOS633N.
Does LM4040BIM3X-2.0/NOPB require an external output capacitor?
No, the LM4040BIM3X-2.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to 100 nF bypass caps - a key advantage over many competing shunt references that mandate minimum capacitance for phase margin.
What is the operating temperature range for LM4040BIM3X-2.0/NOPB?
The LM4040BIM3X-2.0/NOPB is rated for industrial temperature operation from −40°C to +85°C (Temperature Grade I). It is also AEC-Q100 Grade 3 qualified, confirming suitability for automotive applications within this same ambient range.
How does LM4040BIM3X-2.0/NOPB handle thermal hysteresis?
The LM4040BIM3X-2.0/NOPB exhibits 0.08% thermal hysteresis - defined as the voltage difference measured at 25°C after cycling to −40°C versus after cycling to +125°C. This translates to ≤ ±1.65 mV deviation, critical for repeatable calibration in field-deployed instrumentation.
What package type and pin configuration does LM4040BIM3X-2.0/NOPB use?
The LM4040BIM3X-2.0/NOPB uses the 3-pin SOT-23 (DBZ) package. Pin 1 is Cathode (I/O), Pin 2 is Anode (ground), and Pin 3 is NC (no connect, left floating or tied to anode per EMI guidance). This mapping is confirmed in Figure 4-1 and Table 4-1 of the TI datasheet.
LM4040BIM3X-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
LM4040BIM3X-2.0/NOPB FAQ
1.How can I place an order for LM4040BIM3X-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3X-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 LM4040BIM3X-2.0/NOPB reliable?
The price and inventory of LM4040BIM3X-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 LM4040BIM3X-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM3X-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3X-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3X-2.0/NOPB?
LM4040BIM3X-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3X-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 LM4040BIM3X-2.0/NOPB?
For technical support, including LM4040BIM3X-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3X-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040BIM3X-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3X-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 LM4040BIM3X-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM3X-2.0/NOPB?
All LM4040BIM3X-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3X-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 LM4040BIM3X-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM3X-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040BIM3X-2.0/NOPB Tags
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