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Texas Instruments LM4040DIZ-4.1/NOPB
- Part No.:
- LM4040DIZ-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040DIZ-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 1% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:178
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Product details
Overview
LM4040DIZ-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a fixed 4.096 V reverse breakdown voltage with ±1% initial tolerance (Grade D), 100 ppm/°C max temperature coefficient, and 68 μA minimum operating current. It operates across −40°C to +85°C and serves as a stable reference for analog-to-digital converters in industrial data acquisition systems.
For engineers reviewing the LM4040DIZ-4.1/NOPB datasheet, LM4040DIZ-4.1/NOPB pinout, LM4040DIZ-4.1/NOPB application, or LM4040DIZ-4.1/NOPB equivalent, key selection criteria include its shunt topology, no-output-capacitor requirement, capacitive-load tolerance, low 35 μVrms noise (10 Hz–10 kHz), and compatibility with space-constrained PCB layouts using through-hole TO-92 mounting.
Technical Context
The LM4040DIZ-4.1/NOPB uses Zener-zap trimming during wafer sort to achieve ±1% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for stable voltage over temperature. Its shunt architecture requires an external series resistor to set operating current between 68 μA and 15 mA.
It exhibits low dynamic impedance (≤1.1 Ω at 1 mA), supports capacitive loads without oscillation, and maintains stability without an output capacitor-enabling direct integration into high-precision sensor signal chains and ADC bias networks where low quiescent current and minimal board area are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 4.096 V nominal reverse breakdown voltage - sets precise bias point for 12-bit ADCs and sensor front-ends requiring binary-aligned references. |
| Initial Tolerance | ±1% at 25°C (Grade D) - corresponds to ±41 mV absolute error, enabling calibration-free operation in mid-accuracy industrial measurement. |
| Temp Coefficient | ≤100 ppm/°C - contributes ≤±8.2 mV drift over −40°C to +85°C, supporting stable performance in unregulated ambient environments. |
| Min Operating Current | 68 μA - allows ultra-low-power operation in battery-backed systems while maintaining regulation and noise performance. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - minimizes added uncertainty in high-resolution data acquisition paths without requiring additional filtering. |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - ensures minimal load-induced voltage shift under varying sink current, critical for consistent ADC reference accuracy. |
| Operating Temp Range | −40°C to +85°C (Industrial Grade I) - qualified for deployment in factory automation, energy metering, and process control equipment. |
Pinout & Package
LM4040DIZ-4.1/NOPB is housed in a 3-pin TO-92 package (body size 4.30 mm × 4.30 mm), with leads arranged bottom-view: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no connect, must float or tie to anode per TI recommendation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connected to system ground via series resistor; voltage at this node is regulated at 4.096 V relative to anode. |
| Anode (Pin 2) | Reference ground reference | Typically tied to system ground; defines the 0 V reference for the shunt output voltage. |
| NC (Pin 3) | No-connect terminal | Must remain unconnected or bonded to anode to reduce EMI sensitivity in noisy industrial environments. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct connection to ADC reference inputs without stability-compromising bypass caps-reducing BOM count and layout area. |
| Tolerates capacitive loads | Stable operation with up to 10 nF load capacitance eliminates need for isolation resistors in buffered reference designs. |
| Micropower operation | 68 μA minimum current enables use in always-on sensor nodes and energy-harvesting systems with sub-100 μA budget. |
| Low wideband noise | 35 μVrms (10 Hz–10 kHz) directly limits quantization uncertainty in 16-bit+ SAR ADC applications without post-filtering. |
| Zener-zap trimmed accuracy | Factory-trimmed at wafer level ensures ±1% initial tolerance without post-package calibration-reducing test time and cost. |
Applications
| Field Transmitters | Data Acquisition |
|---|---|
|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas refineries. IC Role / Device Role / Timing Role: Shunt voltage reference for DAC output scaling and sensor excitation circuitry. Use Value: Stable 4.096 V reference enables accurate 12-bit current loop resolution across −40°C to +85°C ambient swings. |
Use Scenario: Modular analog input modules for PLCs accepting ±10 V, 0–5 V, or 4–20 mA signals. IC Role / Device Role / Timing Role: Precision reference for successive-approximation ADCs and programmable gain amplifier biasing. Use Value: Low 35 μVrms noise and ≤1.1 Ω dynamic impedance preserve ENOB in 16-bit data capture under variable load conditions. |
| Energy Infrastructure | Automotive Test Equipment |
|
Use Scenario: Revenue-grade electricity meters and grid-edge monitoring units deployed outdoors. IC Role / Device Role / Timing Role: Reference source for metrology-grade ADCs measuring voltage, current, and power factor. Use Value: 100 ppm/°C tempco and ±1% initial tolerance meet IEC 62053-21 Class 0.5 accuracy requirements over full industrial range. |
Use Scenario: Portable OBD-II diagnostic tools and battery management system validation rigs. IC Role / Device Role / Timing Role: Calibration reference for multichannel voltage measurement subsystems. Use Value: TO-92 through-hole package provides mechanical robustness and thermal mass for lab-grade repeatability during repeated hot-plug cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIZ-4.1/NOPB | ±0.5% initial tolerance (Grade C), same 4.096 V, TO-92 package, identical min current (68 μA) | Suitable where tighter initial accuracy justifies higher cost; same thermal and noise specs | Select when system-level calibration is impractical and ±0.5% reference error is required at power-up. |
| TL4050C41IDBZR | 4.096 V, ±0.5% (Grade C), SOT-23 package, 75 μA min current, 40 μVrms noise | Surface-mount alternative with smaller footprint but higher min current and slightly higher noise | Choose for automated assembly and space-constrained PCBs where 0.5% tolerance suffices and TO-92 mounting is undesirable. |
Compared with LM4040DIZ-4.1/NOPB, LM4040CIZ-4.1/NOPB improves initial accuracy by 0.5% at equal cost and thermal behavior, while TL4050C41IDBZR trades through-hole robustness and lower min current for SMT compatibility and marginally higher noise-making each optimal for distinct layout and calibration strategies.
Availability
LM4040DIZ-4.1/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and industrial data acquisition systems requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for LM4040DIZ-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 reference design and automotive-qualified components.
The LM4040-N series was developed to deliver high-accuracy, low-power shunt references for space-constrained industrial and automotive applications-emphasizing no-capacitor stability, wide current range, and robust thermal performance.
FAQ
What is the reference voltage and tolerance of LM4040DIZ-4.1/NOPB?
The LM4040DIZ-4.1/NOPB provides a nominal reverse breakdown voltage of 4.096 V with ±1% initial tolerance at 25°C (Grade D). Over the full industrial temperature range (−40°C to +85°C), its total tolerance remains within ±1.98% due to a maximum temperature coefficient of 100 ppm/°C. This specification is verified per TI's Electrical Characteristics table 5.15.
Does LM4040DIZ-4.1/NOPB require an output capacitor for stability?
No, LM4040DIZ-4.1/NOPB does not require an output capacitor. Its internal design ensures stability with any capacitive load-including direct connection to ADC reference inputs-eliminating the need for external bypass capacitors. This is confirmed in the device description and "No output capacitor required" feature listing in the official datasheet.
What is the minimum operating current for LM4040DIZ-4.1/NOPB?
The LM4040DIZ-4.1/NOPB requires a minimum operating current of 68 μA at 25°C to maintain regulation, as specified in Section 5.3 (Recommended Operating Conditions) and Table 5.15 of the datasheet. This value increases slightly over temperature, reaching 70 μA at the extremes of the −40°C to +85°C range.
Which package type does LM4040DIZ-4.1/NOPB use?
LM4040DIZ-4.1/NOPB uses the TO-92 package (orderable suffix "Z"), a 3-pin through-hole plastic package with body dimensions of 4.30 mm × 4.30 mm. Pin configuration is bottom-view: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no connect), per Figure 4-2 and Table 4-1 in the datasheet.
Is LM4040DIZ-4.1/NOPB suitable for automotive applications?
LM4040DIZ-4.1/NOPB is not AEC-Q100 qualified. Only the LM4040-N-Q1 variants (e.g., LM4040QDIZ-4.1/NOPB) carry AEC-Q100 Grade 1 or Grade 3 qualification. The "DIZ" suffix denotes the standard industrial-grade part; for automotive use, the Q1 variant must be selected to meet reliability and stress-test requirements.
LM4040DIZ-4.1/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040DIZ-4.1/NOPB FAQ
1.How can I place an order for LM4040DIZ-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIZ-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 LM4040DIZ-4.1/NOPB reliable?
The price and inventory of LM4040DIZ-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 LM4040DIZ-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIZ-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIZ-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIZ-4.1/NOPB?
LM4040DIZ-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIZ-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 LM4040DIZ-4.1/NOPB?
For technical support, including LM4040DIZ-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIZ-4.1/NOPB requirements.
6.How does Aetrix verify that LM4040DIZ-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIZ-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 LM4040DIZ-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIZ-4.1/NOPB?
All LM4040DIZ-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIZ-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 LM4040DIZ-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIZ-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIZ-4.1/NOPB Tags
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