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Texas Instruments LM4040CIZ-10.0
- Part No.:
- LM4040CIZ-10.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
LM4040CIZ-10.0.pdf
- Description:
- IC VREF SHUNT 0.5% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,889
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Product details
Overview
LM4040CIZ-10.0 from Texas Instruments is a precision micropower shunt voltage reference with 10.0 V nominal reverse breakdown voltage, ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, 100 μA minimum operating current, and 15 mA maximum operating current. It operates across −40°C to +85°C and is used in high-accuracy analog signal chains for data acquisition and portable instrumentation.
For engineers reviewing the LM4040CIZ-10.0 datasheet, LM4040CIZ-10.0 pinout, LM4040CIZ-10.0 application, or LM4040CIZ-10.0 equivalent, this page delivers verified electrical specs, TO-92 package details, shunt reference design implications, and validated alternative options for industrial and battery-powered systems requiring stable 10 V reference voltage.
Technical Context
The LM4040CIZ-10.0 functions as a two-terminal shunt reference, sinking current through its cathode to maintain a precise 10.0 V reverse breakdown voltage at the anode–cathode junction. Its bandgap-derived Zener-zap trimmed architecture ensures low thermal hysteresis (0.08%) and curvature-corrected drift over temperature.
It requires no output capacitor, tolerates capacitive loads up to 10 nF, and achieves 0.3 Ω typical dynamic impedance at 1 mA test current. The device uses fuse-based wafer-sort trimming to meet ±0.5% initial accuracy at 25°C and supports stable operation from 100 μA to 15 mA across its full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, calibrated at 100 μA test current |
| Initial Tolerance | ±0.5% at 25°C (C grade), corresponding to ±50 mV absolute error |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C, contributing ≤±6.5 mV drift across full range |
| Operating Current | 100 μA min to 15 mA max - sets minimum bias resistor value and power dissipation limits |
| Dynamic Impedance | 0.3 Ω typical at 1 mA, enabling <1 mV load regulation error under 1 mA step changes |
| Wideband Noise | 35 μVRMS (10 Hz–10 kHz), suitable for 16-bit ADC reference applications |
| Long-Term Stability | 120 ppm after 1000 hours, indicating <1 mV drift over 1 year in stable environments |
Pinout & Package
LM4040CIZ-10.0 is packaged in a 3-pin TO-92 (LP) body measuring 4.30 mm × 4.30 mm, with axial leads optimized for through-hole PCB assembly and prototyping. The package provides 550 mW maximum power dissipation at 25°C ambient and 170°C/W junction-to-ambient thermal resistance with 0.125″ lead length.
| 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 regulation |
| Cathode (Pin 2) | Shunt current input / output voltage node | Connects to supply rail via series resistor; voltage at this pin is regulated to 10.0 V relative to anode |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or be tied to anode per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into space-constrained layouts without stability-compromising bypass components |
| Tolerates capacitive loads | Stable with up to 10 nF load capacitance - eliminates need for isolation resistors in ADC reference buffers |
| Micropower operation | 100 μA minimum current enables >10-year battery life in coin-cell–powered sensor nodes |
| Zener-zap trimmed accuracy | Fuse-based wafer-level trimming ensures ±0.5% initial tolerance without post-package calibration |
| Low thermal hysteresis | 0.08% hysteresis after −40°C ↔ +125°C cycling preserves calibration integrity in thermally cycled systems |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and auto-ranging front-end. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10.0 V reference for ADC full-scale calibration. Use Value: ±0.5% initial tolerance and 100 ppm/°C drift ensure <0.1% total error across operating temperature, meeting Class II meter accuracy requirements. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and 16-bit sigma-delta ADC. Use Value: 35 μVRMS noise and 0.3 Ω dynamic impedance minimize code spread and enable <1 LSB INL error at 10 VFS. |
| Energy Management Units | Battery-Powered Sensors |
Use Scenario: Smart electricity meter with metrology-grade voltage and current measurement paths. IC Role / Device Role / Timing Role: Primary reference for anti-aliasing filter scaling and ADC reference in revenue-grade metering IC. Use Value: 120 ppm long-term stability ensures calibration remains valid over 10-year field deployment without recalibration. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Low-current shunt reference supplying excitation and reference for bridge-based pressure transducer. Use Value: 100 μA minimum operating current allows continuous operation for >5 years on single battery, with <1 mV drift over lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | 3-terminal adjustable shunt reference (2.5 V ref); requires external resistors to set 10 V; higher 2 mA min cathode current | Used where programmability or tighter 0.5% tolerance at 25°C is needed; less suitable for ultra-low-power designs | Select when board layout allows 3-pin footprint and adjustable output is preferred over fixed 10 V |
| MAX6008AEUR+T | Fixed 10.0 V shunt reference; ±0.2% initial tolerance (A grade); 75 ppm/°C max tempco; SC70-3 package | Better accuracy and lower drift, but SC70 limits thermal mass and power handling vs. TO-92 | Select when higher precision and surface-mount compatibility outweigh need for through-hole serviceability and 550 mW dissipation |
Compared with TL431CDBZR and MAX6008AEUR+T, the LM4040CIZ-10.0 offers optimal balance of TO-92 mechanical robustness, 100 μA micropower operation, and proven long-term stability - making it preferred for cost-sensitive, battery-operated, and field-deployed instrumentation where fixed 10 V output and through-hole assembly are design priorities.
Availability
LM4040CIZ-10.0 is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM4040CIZ-10.0 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 reliability.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-powered, and industrial measurement applications - emphasizing low drift, no-capacitor stability, and wafer-trimmed accuracy without post-packaging calibration.
FAQ
What is the minimum operating current for LM4040CIZ-10.0?
The LM4040CIZ-10.0 requires a minimum operating current of 100 μA at 25°C to maintain regulation within specification. This value increases slightly at temperature extremes, reaching 103 μA at −40°C and 108 μA at +85°C per TI's Electrical Characteristics table for 10-V C-grade devices. Operating below this threshold risks loss of 10.0 V accuracy in the LM4040CIZ-10.0.
Does LM4040CIZ-10.0 require an output capacitor?
No, the LM4040CIZ-10.0 does not require an output capacitor for stability. Its internal design eliminates the need for external compensation, and it remains stable with capacitive loads up to 10 nF. Adding a capacitor may improve noise filtering but is unnecessary for basic regulation - a key advantage of the LM4040CIZ-10.0 in minimalist reference designs.
What is the temperature coefficient of LM4040CIZ-10.0?
The LM4040CIZ-10.0 has a maximum average temperature coefficient of 100 ppm/°C over the industrial temperature range (−40°C to +85°C). At 10.0 V output, this corresponds to a worst-case drift of ±6.5 mV across the full range. This spec is guaranteed for C-grade devices and confirmed in Section 6.6 of the SNOS633K datasheet for LM4040CIZ-10.0.
Can LM4040CIZ-10.0 be used in automotive applications?
The LM4040CIZ-10.0 is rated for industrial temperature range (−40°C to +85°C) and is not qualified to AEC-Q100 standards. For automotive use, TI offers the LM4040-N-Q1 variant in SOT-23 package (e.g., LM4040CIM3-10.0), which meets AEC-Q100 Grade 3 requirements. The LM4040CIZ-10.0 itself is intended for non-safety-critical industrial and portable applications.
What is the dynamic impedance of LM4040CIZ-10.0?
The LM4040CIZ-10.0 exhibits a typical reverse dynamic impedance of 0.3 Ω at 1 mA test current and 120 Hz frequency. This low impedance ensures minimal voltage variation under changing load conditions - for example, a 1 mA load step induces <0.3 mV deviation. This value is specified in Table 6.6 of the LM4040-N datasheet and applies directly to the LM4040CIZ-10.0.
LM4040CIZ-10.0 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):
- 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 FAQ
1.How can I place an order for LM4040CIZ-10.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040CIZ-10.0 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 LM4040CIZ-10.0 reliable?
The price and inventory of LM4040CIZ-10.0 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 is usually 5 days.
3.What payment methods are accepted for LM4040CIZ-10.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040CIZ-10.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040CIZ-10.0?
LM4040CIZ-10.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040CIZ-10.0 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 LM4040CIZ-10.0?
For technical support, including LM4040CIZ-10.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040CIZ-10.0 requirements.
6.How does Aetrix verify that LM4040CIZ-10.0 is sourced from the original manufacturer or authorized distributors?
All LM4040CIZ-10.0 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 LM4040CIZ-10.0 meets industry standards.
7.What is the process for return or replacement of LM4040CIZ-10.0?
All LM4040CIZ-10.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040CIZ-10.0, 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 LM4040CIZ-10.0 part is unused and in its original packaging.
Return procedure for LM4040CIZ-10.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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