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Texas Instruments LM4040CIM3X-4.1/NOPB
- Part No.:
- LM4040CIM3X-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040CIM3X-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,449
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Product details
Overview
LM4040CIM3X-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a fixed 4.096 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, and stable operation from 68 μA to 15 mA supply current. It enables high-accuracy analog-to-digital conversion in industrial data acquisition modules.
For engineers reviewing the LM4040CIM3X-4.1/NOPB datasheet, LM4040CIM3X-4.1/NOPB pinout, LM4040CIM3X-4.1/NOPB application, or LM4040CIM3X-4.1/NOPB equivalent, this page provides verified electrical specifications, thermal behavior, SOT-23 pin mapping, automotive-grade qualification status, and validated alternative parts for voltage reference selection in space-constrained, low-power systems.
Technical Context
The LM4040CIM3X-4.1/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% output voltage accuracy at 25°C and incorporates bandgap-based temperature drift curvature correction. Its low dynamic impedance (0.9 Ω typical) and wide operating current range (68 μA–15 mA) ensure stable regulation across varying load conditions without requiring an external capacitor.
Designed for industrial-grade operation (−40°C to +85°C), it tolerates capacitive loads and exhibits 35 μVrms wideband noise (10 Hz–10 kHz) and 0.08% thermal hysteresis over −40°C to +125°C cycling - critical for repeatable sensor signal conditioning in field transmitters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - matches common 12-bit ADC full-scale reference points. |
| Initial Tolerance | ±0.5% at 25°C (C grade) - supports 12-bit system accuracy without calibration. |
| Temp Coefficient | ≤100 ppm/°C - ensures ≤±0.53 mV drift over −40°C to +85°C ambient range. |
| Operating Current | 68 μA min to 15 mA max - enables ultra-low-power sensor biasing and robust high-current regulation. |
| Dynamic Impedance | 0.9 Ω typical at 1 mA - minimizes output voltage shift under dynamic load changes. |
| Wideband Noise | 35 μVrms (10 Hz–10 kHz) - preserves SNR in precision analog front-ends. |
| Thermal Hysteresis | 0.08% - guarantees repeatability after thermal cycling in outdoor energy infrastructure deployments. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current input and regulated output node - connects to supply rail via series resistor; voltage referenced to anode. |
| Anode (Pin 2) | O | Ground reference terminal - must be connected to system ground or low-impedance return path. |
| NC (Pin 3) | - | No-connect terminal - left floating or tied to anode per EMI mitigation guidance in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with any capacitive load up to 10 nF - eliminates BOM cost and layout area for stabilization. |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy at 25°C without post-package adjustment - reduces test time and yield loss. |
| Low quiescent current | 68 μA minimum operating current - enables use in battery-powered field transmitters with multi-year runtime. |
| Automotive qualification option | LM4040CIM3X-4.1/NOPB is industrial-grade; Q1 variant (LM4040CQIM3X-4.1) meets AEC-Q100 Grade 3 - supports dual-sourcing for automotive ECUs. |
| Robust ESD protection | ±2000 V HBM - withstands handling and board assembly without special precautions. |
Applications
| Field Transmitter | Data Acquisition |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitter operating in harsh industrial environments. IC Role / Device Role / Timing Role: Shunt voltage reference for DAC output scaling and sensor excitation circuitry. Use Value: 4.096 V output directly supports 12-bit resolution with no gain error; 100 ppm/°C TC enables <±0.1% FS error over −40°C to +85°C. |
Use Scenario: Modular analog input card for PLC with multiple 16-bit SAR ADC channels. IC Role / Device Role / Timing Role: Precision reference for simultaneous sampling ADCs and programmable gain amplifier offset calibration. Use Value: 35 μVrms noise and 0.9 Ω dynamic impedance preserve ENOB >15.2 bits; SOT-23 footprint allows per-channel referencing. |
| Energy Infrastructure | Analog Input Module |
Use Scenario: Solar inverter DC-link voltage monitoring and grid synchronization circuitry. IC Role / Device Role / Timing Role: Stable reference for isolated voltage sensing and fault detection comparators. Use Value: Thermal hysteresis of 0.08% ensures repeatable trip thresholds after daily thermal cycling; 15 mA max current supports fast transient response. |
Use Scenario: DIN-rail mounted I/O module with 8-channel thermocouple inputs and cold-junction compensation. IC Role / Device Role / Timing Role: Reference source for RTD biasing and thermocouple cold-junction measurement ADC. Use Value: 68 μA min current allows operation from low-power LDOs; ±0.5% tolerance eliminates need for per-module calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V output, ±0.5% tolerance, SOT-23-3, but higher 100 μA min current and 120 ppm/°C TC. | Less suitable for ultra-low-power field transmitters; acceptable for general-purpose DAQ where power budget >100 μA. | Select TL4050C41IDBZR only if existing design already uses TI TL4050 family and layout reuse is prioritized. |
| MAX6008AEUR+T | 4.096 V output, ±0.2% tolerance (A grade), SC70-3 package, 75 μA min current, 75 ppm/°C TC. | Better accuracy and lower TC than LM4040CIM3X-4.1/NOPB, but SC70 footprint differs - requires PCB redesign. | Choose MAX6008AEUR+T when 13-bit system accuracy is required and board space allows SC70 placement. |
Compared with TL4050C41IDBZR and MAX6008AEUR+T, LM4040CIM3X-4.1/NOPB offers the lowest minimum operating current (68 μA) in SOT-23, making it optimal for battery-backed industrial sensors, while maintaining compatibility with legacy LM4040 layouts and test firmware.
Availability
LM4040CIM3X-4.1/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM4040CIM3X-4.1/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 voltage references and industrial-grade IC design.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, low-drift applications in industrial automation, energy metering, and automotive subsystems - emphasizing accuracy, stability, and ease of integration.
FAQ
What is the exact output voltage tolerance of LM4040CIM3X-4.1/NOPB at 25°C?
The LM4040CIM3X-4.1/NOPB has a guaranteed initial reverse breakdown voltage tolerance of ±0.5% at 25°C (C grade), corresponding to ±20.5 mV around the nominal 4.096 V output. This is verified by 100% production testing per TI's SNOS633N datasheet Section 5.15.
Does LM4040CIM3X-4.1/NOPB require an external capacitor for stability?
No, LM4040CIM3X-4.1/NOPB does not require an external capacitor. Its internal architecture ensures stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback nodes - a key advantage over older shunt references.
What is the minimum operating current for LM4040CIM3X-4.1/NOPB?
The LM4040CIM3X-4.1/NOPB requires a minimum operating current of 68 μA at 25°C, increasing slightly to 70 μA over the full −40°C to +85°C industrial temperature range. This value is specified in Section 5.3 of the LM4040-N datasheet for the 4.1 V variant.
Is LM4040CIM3X-4.1/NOPB qualified for automotive applications?
LM4040CIM3X-4.1/NOPB is rated for industrial temperature range (−40°C to +85°C). For automotive use, TI offers the pin-compatible LM4040CQIM3X-4.1, which is AEC-Q100 Grade 3 qualified (−40°C to +105°C) and shares identical electrical specs except for extended temp validation.
What package type does LM4040CIM3X-4.1/NOPB use, and what are its dimensions?
LM4040CIM3X-4.1/NOPB uses the SOT-23-3 (DBZ) package with nominal body dimensions of 2.92 mm × 1.30 mm. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC - fully documented in Figure 4-1 and Table 4-1 of the TI datasheet.
LM4040CIM3X-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040CIM3X-4.1/NOPB FAQ
1.How can I place an order for LM4040CIM3X-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIM3X-4.1/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 LM4040CIM3X-4.1/NOPB reliable?
The price and inventory of LM4040CIM3X-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIM3X-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CIM3X-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIM3X-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIM3X-4.1/NOPB?
LM4040CIM3X-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIM3X-4.1/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 LM4040CIM3X-4.1/NOPB?
For technical support, including LM4040CIM3X-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIM3X-4.1/NOPB requirements.
6.How does Aetrix verify that LM4040CIM3X-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CIM3X-4.1/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 LM4040CIM3X-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CIM3X-4.1/NOPB?
All LM4040CIM3X-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIM3X-4.1/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 LM4040CIM3X-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4040CIM3X-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040CIM3X-4.1/NOPB Tags
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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