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Texas Instruments LM4040BIZ-5.0/NOPB
- Part No.:
- LM4040BIZ-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040BIZ-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:453
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Product details
Overview
LM4040BIZ-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.2% initial tolerance (B grade) at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA supply current and supports industrial temperature range (−40°C to +85°C), serving as a compact, capacitor-free reference for analog signal conditioning in field transmitters and data acquisition systems.
For engineers reviewing the LM4040BIZ-5.0/NOPB datasheet, LM4040BIZ-5.0/NOPB pinout, LM4040BIZ-5.0/NOPB application, or LM4040BIZ-5.0/NOPB equivalent, this page provides verified electrical specifications, TO-92 terminal mapping, real-world use cases in energy infrastructure and automotive sensing, and two validated alternative parts with documented technical and application differences.
Technical Context
The LM4040BIZ-5.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.2% initial accuracy and incorporates bandgap-derived temperature drift curvature correction. Its low dynamic impedance (0.8 Ω typical at 1 mA) ensures stable regulation across load and temperature variations.
Unlike series references, it functions as a two-terminal shunt device requiring only an external current-limiting resistor. It tolerates capacitive loads without oscillation and requires no output capacitor-simplifying layout in space-constrained PCBs while maintaining stability from 74 μA minimum operating current up to 15 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and unadjustable - sets precise bias point for ADCs, DACs, and sensor signal chains. |
| Initial Tolerance | ±0.2% at 25°C (B grade) - enables high-accuracy calibration without post-production trimming in production test. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - limits voltage drift to ±4.25 mV across full industrial range, critical for stable reference in varying ambient conditions. |
| Operating Current | 74 μA to 15 mA - supports ultra-low-power sensor nodes (e.g., battery-powered field transmitters) and higher-current analog front-ends alike. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - low enough to avoid degrading ENOB in 16-bit+ data acquisition systems. |
| Dynamic Impedance | 0.8 Ω typical at 1 mA - ensures minimal load-induced voltage shift (<0.8 mV per 1 mA load change), improving regulation under dynamic current draw. |
Pinout & Package
LM4040BIZ-5.0/NOPB is packaged in a 3-pin TO-92 (LP) through-hole package with 4.30 mm × 4.30 mm body size. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC (no connect), which must be left floating or tied to Anode in EMI-sensitive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current input and output voltage node - connects to regulated rail; voltage appears between Cathode and Anode. |
| Anode (Pin 2) | O | Reference ground node - typically connected to system ground; defines the 0 V reference for the 5.0 V output. |
| NC (Pin 3) | - | No internal connection - must float or tie to Anode to reduce EMI susceptibility in noisy environments (e.g., near switching power supplies). |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into minimal-footprint designs without stability-compromising bypass components. |
| Tolerates capacitive loads | Supports direct connection to ADC input capacitors or long traces without risk of oscillation or overshoot. |
| Zener-zap voltage trim | Ensures ±0.2% initial accuracy at wafer level - eliminates need for board-level calibration or laser trimming. |
| Low quiescent current | 74 μA minimum operating current enables operation in always-on, battery-backed monitoring circuits. |
| Thermal hysteresis ≤0.08% | Minimizes voltage error after thermal cycling - critical for field-deployed equipment experiencing repeated temperature extremes. |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitter in oil & gas wellhead monitoring. IC Role / Device Role / Timing Role: Shunt voltage reference for precision DAC output scaling and sensor excitation. Use Value: ±0.2% initial tolerance and 100 ppm/°C TC ensure <±0.1% total error over −40°C to +85°C, meeting SIL-2 functional safety requirements. |
Use Scenario: Smart meter voltage measurement channel with isolation amplifier and 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Stable 5.0 V reference for ADC VREF input and analog front-end biasing. Use Value: 35 μVrms noise preserves >110 dB SNR in metrology-grade measurements, enabling Class 0.2 accuracy certification. |
| Analog Input Module | Automotive Sensing |
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 amplifiers and multiplexed ADC drivers. Use Value: Low dynamic impedance (0.8 Ω) prevents gain error drift when multiple channels switch rapidly, ensuring consistent channel-to-channel matching. |
Use Scenario: Engine control unit (ECU) oxygen sensor signal conditioning circuit operating in under-hood environment. IC Role / Device Role / Timing Role: Precision 5.0 V reference for op-amp biasing and ADC reference in AEC-Q100 Grade 3 qualified design. Use Value: Qualified to −40°C to +85°C with 100 ppm/°C TC meets automotive extended temperature stability requirements without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50IDBZR | Same 5.0 V output and ±0.2% initial tolerance, but SOT-23 package (smaller footprint); 75 μA min operating current; 40 μVrms noise. | Better suited for space-constrained PCBs; not TO-92 compatible - requires layout revision and requalification for through-hole assembly lines. | Select TL4050B50IDBZR if surface-mount density is prioritized and rework of mechanical mounting is acceptable. |
| ADR3450ARJZ-R7 | 5.0 V series reference (not shunt); ±0.1% initial tolerance; 12 ppm/°C TC; requires input voltage ≥5.3 V; 10 μA quiescent current. | Eliminates external current-setting resistor but adds dropout headroom requirement - incompatible with low-voltage or single-supply 5 V systems. | Select ADR3450ARJZ-R7 only when input supply exceeds 5.3 V and ultra-low drift (12 ppm/°C) justifies redesign complexity. |
Compared with TL4050B50IDBZR and ADR3450ARJZ-R7, LM4040BIZ-5.0/NOPB uniquely combines TO-92 through-hole compatibility, shunt architecture (no dropout constraint), and AEC-Q100 Grade 3 qualification - making it optimal for legacy industrial hardware upgrades and automotive under-hood analog signal chains where mechanical robustness and supply flexibility are mandatory.
Availability
LM4040BIZ-5.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and automotive sensing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for LM4040BIZ-5.0/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-qualified components.
The LM4040-N series was engineered for space-critical, high-stability analog systems - targeting field instrumentation, industrial automation, and automotive subsystems where accuracy, low noise, and temperature resilience are non-negotiable.
FAQ
What is the maximum operating current for LM4040BIZ-5.0/NOPB?
The LM4040BIZ-5.0/NOPB supports a maximum operating current of 15 mA. This limit is defined by absolute maximum ratings and thermal constraints of the TO-92 package. Exceeding 15 mA risks exceeding the 550 mW power dissipation rating at 25°C ambient, potentially causing thermal shutdown or long-term reliability degradation. Derating is required above 25°C per RθJA = 170°C/W (0.125″ lead length).
Does LM4040BIZ-5.0/NOPB require an external capacitor for stability?
No, LM4040BIZ-5.0/NOPB does not require an external capacitor for stability. Its internal design eliminates the need for output capacitance, and it tolerates capacitive loads up to at least 10 nF without oscillation. This simplifies layout in analog signal chains and avoids phase-margin compromises common with series references.
What is the temperature range specification for LM4040BIZ-5.0/NOPB?
LM4040BIZ-5.0/NOPB is specified for the industrial temperature range of −40°C to +85°C (Grade I). It is not rated for extended −40°C to +125°C operation. The datasheet confirms this range in Section 5.3 Recommended Operating Conditions and Electrical Characteristics tables labeled "Temperature Grade 'I'" - applicable to all LM4040BIZ-xxx variants.
How is the NC pin (Pin 3) used in LM4040BIZ-5.0/NOPB?
In LM4040BIZ-5.0/NOPB, Pin 3 is a no-connect (NC) terminal. TI recommends leaving it floating or connecting it to the Anode (Pin 2) - especially in high-EMI environments such as near transformers or switching regulators - to reduce noise coupling into the reference node and improve long-term stability.
Is LM4040BIZ-5.0/NOPB AEC-Q100 qualified?
No, LM4040BIZ-5.0/NOPB is not AEC-Q100 qualified. Only the LM4040-N-Q1 family (e.g., LM4040BQDBZR) carries AEC-Q100 Grade 1 or Grade 3 qualification. The "I" suffix in LM4040BIZ-5.0/NOPB denotes Industrial Grade (−40°C to +85°C), not automotive qualification - confirmed in the device information table and Features section of the datasheet.
LM4040BIZ-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040BIZ-5.0/NOPB FAQ
1.How can I place an order for LM4040BIZ-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIZ-5.0/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 LM4040BIZ-5.0/NOPB reliable?
The price and inventory of LM4040BIZ-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIZ-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIZ-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIZ-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIZ-5.0/NOPB?
LM4040BIZ-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIZ-5.0/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 LM4040BIZ-5.0/NOPB?
For technical support, including LM4040BIZ-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIZ-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040BIZ-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIZ-5.0/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 LM4040BIZ-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIZ-5.0/NOPB?
All LM4040BIZ-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIZ-5.0/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 LM4040BIZ-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIZ-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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