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Texas Instruments LM4040BIZ-5.0
- Part No.:
- LM4040BIZ-5.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040BIZ-5.0.pdf
- Description:
- IC VREF SHUNT 0.2% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,017
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Product details
Overview
LM4040BIZ-5.0 from Texas Instruments is a precision micropower shunt voltage reference with 5.0 V nominal reverse breakdown voltage, ±0.2% initial tolerance (B grade) at 25°C, 100 ppm/°C max temperature coefficient, 74 μA minimum operating current, and stable operation across −40°C to +85°C industrial temperature range-used for accurate ADC/DAC biasing in portable instrumentation and battery-powered data loggers.
For engineers reviewing the LM4040BIZ-5.0 datasheet, LM4040BIZ-5.0 pinout, LM4040BIZ-5.0 application, or LM4040BIZ-5.0 equivalent, this page delivers verified specifications, TO-92 package details, thermal hysteresis (0.08%), dynamic impedance (0.8 Ω), and noise performance (35 μVrms, 10 Hz–10 kHz) critical for low-drift analog signal chains.
Technical Context
The LM4040BIZ-5.0 operates as a two-terminal shunt reference: cathode sinks current while anode connects to ground, enabling simple series-resistor biasing without output capacitor requirements. Its bandgap-derived Zener-zap trimmed structure ensures ±0.2% initial accuracy and curvature-corrected temperature drift.
It maintains stability under capacitive loads up to 10 nF and supports wide operating current (74 μA to 15 mA), making it suitable for both ultra-low-power sensor nodes and higher-current precision references where dynamic impedance (<0.8 Ω) minimizes load-induced voltage error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, tightly regulated across operating current and temperature |
| Initial Tolerance | ±0.2% at 25°C (B grade), corresponding to ±10 mV absolute error for system calibration budgets |
| Temp Coefficient | Max 100 ppm/°C over −40°C to +85°C, contributing ≤±6.5 mV drift across full industrial range |
| Min Operating Current | 74 μA - enables use in <100 μA systems such as coin-cell IoT sensors |
| Dynamic Impedance | 0.8 Ω typical at 1 mA - limits load regulation error to <0.8 mV per 1 mA load change |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - supports 16-bit+ ADC accuracy without additional filtering |
| Thermal Hysteresis | 0.08% - ensures repeatable voltage after thermal cycling, critical for field-deployed test equipment |
Pinout & Package
LM4040BIZ-5.0 is packaged in TO-92 (LP package), 4.30 mm × 4.30 mm body size, with axial leads optimized for through-hole prototyping and cost-sensitive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must be connected to system ground; defines 0 V reference point for cathode voltage |
| Cathode (Pin 2) | Shunt current sink / output terminal | Delivers stable 5.0 V relative to anode; sinks all bias and load current |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 1 per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into space-constrained PCBs without stability-compensation components |
| Tolerates capacitive loads | Stable with up to 10 nF load capacitance-supports filtering directly at reference output |
| Micropower operation | 74 μA minimum current allows use in always-on, battery-life-critical applications |
| Zener-zap trimmed accuracy | Fuse-based wafer-level trimming achieves ±0.2% initial tolerance without post-package adjustment |
| Low thermal hysteresis | 0.08% ensures voltage repeatability after environmental temperature cycling in field instruments |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter front-end requiring stable 5 V reference for 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 5.0 V bias for ADC internal reference buffer. Use Value: ±0.2% initial tolerance and 100 ppm/°C TC ensure measurement accuracy remains within 0.1% over full operating temperature range. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision shunt reference for op-amp-based current-to-voltage conversion and ADC reference. Use Value: 0.8 Ω dynamic impedance minimizes gain error when driving multiplexer-switched channel buffers. |
| Energy Management | Battery-Powered Test Equipment |
Use Scenario: Smart meter voltage monitoring circuit measuring AC mains with isolation amplifier. IC Role / Device Role / Timing Role: Isolated-side reference for isolated sigma-delta ADC powering auxiliary logic. Use Value: 74 μA min operating current enables operation from small auxiliary supply rails without efficiency penalty. |
Use Scenario: Portable oscilloscope probe calibration circuit requiring traceable 5 V reference. IC Role / Device Role / Timing Role: Primary voltage standard for on-board self-calibration routine. Use Value: 0.08% thermal hysteresis guarantees repeatable calibration results after lab temperature fluctuations. |
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, ±0.2% tolerance, but SOT-23 package (smaller footprint, higher thermal resistance) | Preferred for high-density PCBs; less suitable for manual assembly or high-reliability through-hole deployments | Select TL4050B50IDBZR when board space is constrained and reflow capability exists. |
| REF3050AIDBZR | Series reference (3-pin), 5.0 V, ±0.2% tolerance, 50 μA quiescent current - not pin-compatible, requires different biasing | Used where low dropout and supply rejection matter more than simplicity; needs input voltage >5.1 V | Choose REF3050AIDBZR only when supply headroom permits and PSRR >80 dB is required. |
Compared with TL4050B50IDBZR and REF3050AIDBZR, the LM4040BIZ-5.0 offers lowest component count (2-pin), TO-92 mechanical robustness, and proven long-term stability in fielded instrumentation-making it optimal for cost-sensitive, reliability-focused shunt reference designs.
Availability
LM4040BIZ-5.0 is available at Aetrix Electronics and suitable for portable instrumentation, energy management systems, and battery-powered test equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4040BIZ-5.0 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 high-volume manufacturing.
The LM4040-N product line was engineered for space-constrained, low-power applications demanding high initial accuracy and minimal thermal drift-targeting instrumentation, portable medical devices, and industrial sensing front-ends.
FAQ
What is the maximum operating current for LM4040BIZ-5.0?
The LM4040BIZ-5.0 supports a maximum operating current of 15 mA, as specified in the Recommended Operating Conditions table. This limit ensures safe power dissipation in the TO-92 package (550 mW rating at 25°C ambient) while maintaining voltage regulation integrity and thermal stability across the full industrial temperature range.
Does LM4040BIZ-5.0 require an external capacitor for stability?
No, the LM4040BIZ-5.0 does not require an external capacitor for stability. Its internal design eliminates the need for output capacitance, and it remains stable even with capacitive loads up to 10 nF-enabling direct connection to ADC reference inputs or op-amp feedback networks without added components.
What is the thermal hysteresis specification for LM4040BIZ-5.0?
The LM4040BIZ-5.0 has a thermal hysteresis of 0.08%, defined as the voltage difference measured at 25°C after cycling between −40°C and +125°C. This low hysteresis ensures repeatable reference performance in field-deployed equipment subject to ambient temperature variations, such as handheld test instruments and outdoor energy monitors.
Can LM4040BIZ-5.0 be used in automotive applications?
The LM4040BIZ-5.0 is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q200 qualified. For automotive applications, TI offers the LM4040-N-Q1 variant in SOT-23 package with AEC-Q100 Grade 3 qualification-LM4040BIZ-5.0 itself is intended for non-safety-critical industrial and portable equipment.
What is the dynamic impedance of LM4040BIZ-5.0 and why does it matter?
The LM4040BIZ-5.0 has a typical dynamic impedance of 0.8 Ω at 1 mA operating current. This low value means the output voltage changes by less than 0.8 mV per 1 mA variation in load or bias current-critical for minimizing gain error in precision op-amp circuits and ensuring stable ADC reference voltage under varying load conditions.
LM4040BIZ-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for LM4040BIZ-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIZ-5.0 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 reliable?
The price and inventory of LM4040BIZ-5.0 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 is usually 5 days.
3.What payment methods are accepted for LM4040BIZ-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIZ-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIZ-5.0?
LM4040BIZ-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIZ-5.0 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?
For technical support, including LM4040BIZ-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIZ-5.0 requirements.
6.How does Aetrix verify that LM4040BIZ-5.0 is sourced from the original manufacturer or authorized distributors?
All LM4040BIZ-5.0 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 meets industry standards.
7.What is the process for return or replacement of LM4040BIZ-5.0?
All LM4040BIZ-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIZ-5.0, 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 part is unused and in its original packaging.
Return procedure for LM4040BIZ-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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