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Texas Instruments LM4040CIZ-10.0/NOPB
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- Part No.:
- LM4040CIZ-10.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040CIZ-10.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:624
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Product details
Overview
LM4040CIZ-10.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in TO-92 package, delivering a stable 10.0 V reverse breakdown voltage with ±0.5% initial tolerance (C grade), 100 μA minimum operating current, and 100 ppm/°C max temperature coefficient across −40°C to +85°C industrial range. It enables high-accuracy analog-to-digital conversion in field transmitters and energy infrastructure monitoring systems.
For engineers reviewing the LM4040CIZ-10.0/NOPB datasheet, LM4040CIZ-10.0/NOPB pinout, LM4040CIZ-10.0/NOPB application, or LM4040CIZ-10.0/NOPB equivalent, key selection criteria include its fixed 10.0 V output, no-output-capacitor requirement, capacitive-load tolerance, low 35 μVrms noise (10 Hz–10 kHz), and compatibility with space-constrained industrial and automotive signal conditioning circuits.
Technical Context
The LM4040CIZ-10.0/NOPB operates as a two-terminal shunt reference, sinking current through its cathode to maintain precise 10.0 V across external load/resistor networks. Its Zener-zap trimmed bandgap architecture provides curvature-corrected temperature drift and low dynamic impedance (≤0.9 Ω at 1 mA), ensuring stable regulation under varying load and temperature conditions.
Unlike series references, it requires no input supply rail-only a current-limiting resistor-and tolerates unlimited capacitive loading without oscillation. Its fuse-trimmed wafer-sort process guarantees ≤±0.5% output tolerance at 25°C and ≤±29 mV total tolerance over −40°C to +85°C for the C-grade variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage; sets precise reference point for ADCs, DACs, and comparators. |
| Initial Tolerance | ±0.5% (C grade) at 25°C = ±50 mV; enables single-supply 12-bit system accuracy without trimming. |
| Temp Coefficient | Max 100 ppm/°C over −40°C to +85°C; contributes ≤±8.5 mV drift across full industrial range. |
| Min Operating Current | 100 μA at 25°C; allows ultra-low-power operation in battery-backed sensor nodes. |
| Max Operating Current | 15 mA; supports high-current biasing while maintaining regulation and thermal stability. |
| Output Noise | 35 μVrms (10 Hz–10 kHz); minimizes quantization error in 16-bit+ data acquisition systems. |
| Dynamic Impedance | 0.3–0.9 Ω at 1 mA; ensures <1 mV load regulation shift per 1 mA current change. |
Pinout & Package
LM4040CIZ-10.0/NOPB uses a 3-pin TO-92 (LP) package with 4.30 mm × 4.30 mm body size. Pin 1 is Anode (grounded), Pin 2 is Cathode (shunt current/output node), and Pin 3 is NC (no connect, must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Internally connected to substrate; must be tied to system ground for proper shunt operation. |
| Cathode (Pin 2) | Shunt current sink / output terminal | Carries all reference current; voltage at this pin is regulated 10.0 V relative to Anode. |
| NC (Pin 3) | No-connect terminal | Electrically isolated; leave floating or connect to Anode to reduce EMI sensitivity in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into compact PCB layouts without stability-compensation components. |
| Tolerates capacitive loads | Stable with any value of output capacitance-eliminates need for isolation resistors in filter stages. |
| Zener-zap voltage trim | Ensures ≤±0.5% initial accuracy via wafer-level laser trimming, reducing post-assembly calibration. |
| Bandgap temperature drift correction | Delivers flat output vs. temperature curve, minimizing system-level gain error in wide-temp applications. |
| Low 35 μVrms noise | Preserves SNR in precision measurement paths, supporting ≥16-bit effective resolution in DAQ systems. |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor interface in oil/gas or chemical plant instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference for DAC output scaling and current-loop transmitter IC biasing. Use Value: ±0.5% tolerance and 100 ppm/°C TC ensure <0.1% full-scale error over −40°C to +85°C ambient. | Use Scenario: Grid-tied solar inverter DC-link voltage monitoring and protection circuitry. IC Role / Device Role / Timing Role: Precision reference for isolated voltage sensing amplifiers and overvoltage comparators. Use Value: 10.0 V output matches standard 10 V ADC input ranges; low noise prevents false trip events. |
| Data Acquisition | Analog Input Module |
Use Scenario: High-resolution industrial data logger sampling thermocouples and strain gauges. IC Role / Device Role / Timing Role: Reference source for successive-approximation ADC front-end gain stages and offset calibration. Use Value: 35 μVrms noise and <1 mV load regulation enable true 16-bit linearity without dithering. | Use Scenario: Modular PLC analog input card accepting multiple sensor types (RTD, 0–10 V, 4–20 mA). IC Role / Device Role / Timing Role: Common reference for programmable-gain instrumentation amplifiers and multiplexed ADC drivers. Use Value: Fixed 10.0 V output simplifies gain-setting resistor selection and reduces BOM variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C10IDBZR | 10.0 V, ±0.5%, SOT-23-3, 60 μA min current, 75 ppm/°C max TC | Lower min current enables lower-power biasing; smaller footprint but higher thermal resistance (326°C/W vs. TO-92's 170°C/W) | Select TL4050C10IDBZR when board space is constrained and power dissipation <100 mW; LM4040CIZ-10.0/NOPB preferred for higher ambient temp or higher power margin. |
| REF3010AIDBZR | 10.0 V, ±0.2%, SOT-23-3, 50 μA min current, 50 ppm/°C max TC, series topology | Series architecture eliminates need for current-limiting resistor but requires ≥10.3 V input; not drop-in compatible | Choose REF3010AIDBZR only if input rail >10.3 V is available and tighter initial accuracy (±0.2%) justifies redesign; LM4040CIZ-10.0/NOPB retains simplicity and TO-92 thermal performance. |
Compared with TL4050C10IDBZR and REF3010AIDBZR, LM4040CIZ-10.0/NOPB offers superior thermal management in TO-92, no-input-rail flexibility, and proven robustness in high-EMI industrial environments-making it optimal for legacy-compatible, high-reliability shunt reference deployments.
Availability
LM4040CIZ-10.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and analog input modules requiring stable component supply with long-term manufacturability and automotive-grade reliability.
Supply support for LM4040CIZ-10.0/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 product line delivers micropower shunt references optimized for space-constrained, high-accuracy industrial and automotive applications where stability, low noise, and zero-output-capacitor operation are critical.
FAQ
What is the maximum operating current for LM4040CIZ-10.0/NOPB?
The LM4040CIZ-10.0/NOPB supports a maximum operating current of 15 mA. This limit ensures stable regulation and stays within the device's 550 mW power dissipation rating for the TO-92 package at 25°C ambient. Exceeding 15 mA risks thermal overload and output voltage deviation. Always verify junction temperature using RθJA = 170°C/W (0.125″ lead length) in your layout.
Does LM4040CIZ-10.0/NOPB require an external capacitor for stability?
No, LM4040CIZ-10.0/NOPB does not require an external capacitor for stability. Its internal design eliminates the need for output capacitance, and it remains stable even with unlimited capacitive loading-unlike many older shunt references. This simplifies layout and avoids phase-margin concerns in sensitive analog signal chains.
What is the temperature range supported by LM4040CIZ-10.0/NOPB?
LM4040CIZ-10.0/NOPB is rated for the industrial temperature range of −40°C to +85°C (Temperature Grade I). It is not qualified for extended automotive Grade 1 (−40°C to +125°C); for that, the LM4040CQIZ-10.0/NOPB variant must be used. The C-grade tolerance and 100 ppm/°C TC are specified across this full −40°C to +85°C range.
How does the NC pin (Pin 3) function on LM4040CIZ-10.0/NOPB?
The NC pin (Pin 3) on LM4040CIZ-10.0/NOPB is electrically isolated and must either be left floating or connected to the Anode (Pin 1). TI recommends tying it to Anode in high-EMI environments (e.g., near transformers or switching regulators) to reduce noise susceptibility-this does not affect regulation but improves immunity to high-frequency interference.
What is the typical output noise of LM4040CIZ-10.0/NOPB?
The LM4040CIZ-10.0/NOPB delivers 35 μVrms wideband noise over the 10 Hz to 10 kHz bandwidth. This low-noise performance is measured at 100 μA operating current and directly impacts system SNR-enabling accurate 16-bit+ data acquisition without additional filtering or averaging in precision sensor interfaces.
LM4040CIZ-10.0/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):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 100 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
LM4040CIZ-10.0/NOPB FAQ
1.How can I place an order for LM4040CIZ-10.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIZ-10.0/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 LM4040CIZ-10.0/NOPB reliable?
The price and inventory of LM4040CIZ-10.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040CIZ-10.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040CIZ-10.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIZ-10.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIZ-10.0/NOPB?
LM4040CIZ-10.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIZ-10.0/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 LM4040CIZ-10.0/NOPB?
For technical support, including LM4040CIZ-10.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIZ-10.0/NOPB requirements.
6.How does Aetrix verify that LM4040CIZ-10.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040CIZ-10.0/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 LM4040CIZ-10.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040CIZ-10.0/NOPB?
All LM4040CIZ-10.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIZ-10.0/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 LM4040CIZ-10.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040CIZ-10.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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