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Texas Instruments LM4040DIM3X-4.1/NOPB
- Part No.:
- LM4040DIM3X-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,779
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Product details
Overview
LM4040DIM3X-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 (Grade C), 100 ppm/°C max temperature coefficient, and stable operation from 68 μA to 15 mA over −40°C to +85°C. It serves as a compact, capacitor-free reference for analog-to-digital converters and sensor signal conditioning in industrial data acquisition systems.
For engineers reviewing the LM4040DIM3X-4.1/NOPB datasheet, LM4040DIM3X-4.1/NOPB pinout, LM4040DIM3X-4.1/NOPB application, or LM4040DIM3X-4.1/NOPB equivalent, key selection criteria include its 4.096 V nominal output, Grade C accuracy, SOT-23 thermal performance (RθJA = 291.9°C/W), low 35 μVrms noise (10 Hz–10 kHz), and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040DIM3X-4.1/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% initial accuracy at 25°C and incorporates bandgap-derived temperature drift curvature correction. Its shunt topology requires an external current-limiting resistor and operates with zero output capacitance dependency.
It maintains stability across its full 68 μA–15 mA operating current range and exhibits low dynamic impedance (0.3–0.9 Ω typical at 1 mA), enabling high PSRR and minimal load regulation error (<1 mV for 1 mA step changes within 68 μA–1 mA range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - enables precise 12-bit ADC full-scale alignment without scaling resistors. |
| Initial Tolerance | ±0.5% at 25°C (Grade C) - corresponds to ±20.5 mV absolute error, suitable for mid-accuracy industrial sensing. |
| Temp Coefficient | ≤100 ppm/°C - contributes ≤±5.3 mV drift over −40°C to +85°C ambient, critical for uncalibrated field transmitters. |
| Operating Current | 68 μA min to 15 mA max - supports ultra-low-power sensor nodes and robust industrial supply rail monitoring. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - limits effective resolution to ~16.5 ENOB in high-precision data acquisition front-ends. |
| Dynamic Impedance | 0.3–0.9 Ω typical at 1 mA - ensures <0.1% load regulation error under dynamic current steps, easing filter design. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, 1.0 mm max height, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Must be connected to system ground; forms cathode-to-anode voltage drop defining reference output. |
| Cathode (Pin 1) | Shunt current input / reference output | Connects to supply rail via current-limiting resistor; voltage at this pin relative to anode is the 4.096 V reference. |
| NC (Pin 3) | No-connect terminal | 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 | Eliminates BOM cost and board space for stability compensation - simplifies layout in space-constrained modules. |
| Tolerates capacitive loads | Stable with >100 nF output capacitance - enables direct buffering of ADC reference inputs without phase-margin risk. |
| Micropower operation | 68 μA minimum operating current - extends battery life in portable field instruments and wireless sensors. |
| AEC-Q100 qualified | Grade 3 (−40°C to +85°C) compliance - validated for automotive sub-systems including body control and ADAS sensor interfaces. |
| Zener-zap trimmed accuracy | Production-trimmed at wafer level - guarantees ±0.5% initial tolerance without post-package calibration. |
Applications
| Industrial Data Acquisition | Automotive Sensor Interface |
|---|---|
Use Scenario: High-channel-count PLC analog input modules digitizing 4–20 mA current loops and thermocouple signals. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V基准 for 12-bit SAR ADCs and PGA gain-setting networks. Use Value: Enables single-supply 0–4.096 V full-scale range matching common DAC outputs, reducing signal scaling complexity. |
Use Scenario: Tire pressure monitoring system (TPMS) sensor nodes measuring pressure and temperature. IC Role / Device Role / Timing Role: Precision voltage reference for low-power sigma-delta ADCs converting piezoresistive bridge outputs. Use Value: Delivers stable reference under wide temperature swings (−40°C to +105°C) without calibration, meeting AEC-Q100 Grade 3 requirements. |
| Energy Infrastructure Monitoring | Process Field Transmitter |
Use Scenario: Smart electricity meter auxiliary power supply monitoring and tamper-detection circuits. IC Role / Device Role / Timing Role: Reference for comparator-based overvoltage/undervoltage detection on DC rails. Use Value: Maintains ±0.5% accuracy across 10-year lifetime and thermal cycling, ensuring long-term reliability in sealed meters. |
Use Scenario: 4–20 mA HART-enabled transmitter for flow, level, or pressure measurement in chemical plants. IC Role / Device Role / Timing Role: Stable reference for loop-powered DACs and analog front-end signal conditioning. Use Value: Supports HART digital communication overlay by minimizing reference-induced noise in the 1–2 kHz frequency band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3X-4.1/NOPB | Same 4.096 V output and SOT-23 package, but Grade C tolerance (±0.5%) with identical tempco and noise specs. | No automotive qualification; rated only for industrial −40°C to +85°C (not AEC-Q100 Grade 3). | Select when AEC-Q100 compliance is unnecessary and cost optimization is prioritized. |
| REF3040AIDBZR | 4.096 V series reference; 50 ppm/°C max tempco; 25 μVrms noise; requires 1.5 μF output cap; 50 μA quiescent current. | Higher accuracy (±0.2%), lower noise, but series architecture demands output capacitor and cannot sink current. | Choose for ultra-low-noise, high-PSRR applications where board space allows capacitor and supply headroom permits series topology. |
Compared with LM4040CIM3X-4.1/NOPB, the LM4040DIM3X-4.1/NOPB adds AEC-Q100 Grade 3 qualification without sacrificing accuracy or noise; versus REF3040AIDBZR, it offers shunt flexibility and capacitor-free operation at the cost of slightly higher tempco and noise.
Availability
LM4040DIM3X-4.1/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interface, and energy infrastructure monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LM4040DIM3X-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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4040-N family was designed specifically for space-constrained, low-power applications demanding stable voltage references without external capacitors - targeting industrial automation, automotive subsystems, and portable instrumentation.
FAQ
What is the maximum operating current for LM4040DIM3X-4.1/NOPB?
The LM4040DIM3X-4.1/NOPB supports a maximum operating current of 15 mA. This limit ensures safe power dissipation in the SOT-23 package (306 mW at 25°C ambient) while maintaining specified voltage accuracy and thermal stability across the full −40°C to +85°C industrial temperature range.
Does LM4040DIM3X-4.1/NOPB require an external output capacitor?
No, the LM4040DIM3X-4.1/NOPB does not require an external output capacitor for stability. Its internal design eliminates the need for stabilization capacitance, and it remains stable even with capacitive loads up to 100 nF - simplifying PCB layout and reducing BOM count.
What is the temperature coefficient specification for LM4040DIM3X-4.1/NOPB?
The LM4040DIM3X-4.1/NOPB has a maximum average temperature coefficient of 100 ppm/°C over −40°C to +85°C. This translates to a worst-case voltage drift of ±5.3 mV across the full temperature range, supporting uncalibrated operation in field-deployed industrial equipment.
Is LM4040DIM3X-4.1/NOPB qualified for automotive applications?
Yes, LM4040DIM3X-4.1/NOPB is AEC-Q100 qualified for automotive use (Grade 3: −40°C to +85°C). It meets stress testing requirements for humidity, temperature cycling, and ESD (±2000 V HBM), making it suitable for non-safety-critical automotive subsystems like cabin sensors and body control modules.
How does the pin configuration of LM4040DIM3X-4.1/NOPB differ from LM4040AIM3X-4.1/NOPB?
LM4040DIM3X-4.1/NOPB and LM4040AIM3X-4.1/NOPB share identical SOT-23-3 pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC. The difference lies solely in initial voltage tolerance (±0.5% vs. ±0.1%) and qualification grade (AEC-Q100 Grade 3 vs. industrial only), not pin function or package geometry.
LM4040DIM3X-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:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 78 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3X-4.1/NOPB FAQ
1.How can I place an order for LM4040DIM3X-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-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 LM4040DIM3X-4.1/NOPB reliable?
The price and inventory of LM4040DIM3X-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 LM4040DIM3X-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-4.1/NOPB?
LM4040DIM3X-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-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 LM4040DIM3X-4.1/NOPB?
For technical support, including LM4040DIM3X-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-4.1/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3X-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-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 LM4040DIM3X-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-4.1/NOPB?
All LM4040DIM3X-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-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 LM4040DIM3X-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3X-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3X-4.1/NOPB Tags
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