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Texas Instruments LM4040AIM3X-10
- Part No.:
- LM4040AIM3X-10
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040AIM3X-10.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,983
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Product details
Overview
LM4040AIM3X-10 from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.1% initial tolerance (A 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 serves as a stable voltage reference in analog-to-digital converters and portable instrumentation.
For engineers reviewing the LM4040AIM3X-10 datasheet, LM4040AIM3X-10 pinout, LM4040AIM3X-10 application, or LM4040AIM3X-10 equivalent, this page delivers verified specifications, SOT-23 package terminal mapping, real-world use cases, and validated alternative parts for industrial and automotive-grade designs requiring low-noise, capacitive-load-tolerant references.
Technical Context
The LM4040AIM3X-10 uses Zener-zap trimming during wafer sort to achieve ±0.1% accuracy at 25°C and integrates bandgap-based curvature correction for stable voltage over temperature. Its low dynamic impedance (≤0.8 Ω) and wide 100 μA–15 mA operating current range enable robust regulation under varying load conditions.
Unlike series references, it functions as a two-terminal shunt device-cathode supplies output voltage while anode connects to ground-requiring only an external current-limiting resistor. It tolerates capacitive loads without oscillation and needs no output capacitor, simplifying layout in space-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, specified at 100 μA test current |
| Initial Tolerance | ±0.1% (A grade) at 25°C - enables high-accuracy calibration without post-manufacture trimming |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures ≤±6.5 mV drift across full industrial range |
| Operating Current | 100 μA min / 15 mA max - supports ultra-low-power sensing and higher-current DAC reference buffering |
| Dynamic Impedance | ≤0.8 Ω at 1 mA - minimizes load-induced voltage variation in precision feedback paths |
| Wideband Noise | 35 μVRMS (10 Hz–10 kHz) - suitable for 16-bit+ data acquisition without added filtering |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling between −40°C and +125°C |
Pinout & Package
SOT-23 (DBZ) 3-pin surface-mount package: 2.92 mm × 1.30 mm body, gull-wing leads, JEDEC MO-178 compatible. Anode grounded, cathode delivers regulated 10 V output, third pin (NC) must float or connect to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / output voltage node | Connects to regulated 10 V rail; sinks all current through external series resistor |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference for output voltage |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to Pin 2 (anode) per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass components |
| Tolerates capacitive loads | Stable operation with >100 nF output capacitance - eliminates need for isolation resistors in ADC reference buffers |
| Low 35 μVRMS noise | Supports high-resolution (≥16-bit) measurement systems without additional low-noise LDO post-regulation |
| Zener-zap trimmed accuracy | Guarantees ±0.1% initial tolerance via wafer-level laser trimming - reduces system calibration overhead |
| Industrial temperature range | Specified performance from −40°C to +85°C - qualified for deployment in factory automation and outdoor instrumentation |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC and battery-powered operation. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 10 V excitation for precision resistor ladder and ADC reference input. Use Value: Enables ±0.01% measurement accuracy over temperature with <100 μA quiescent current draw. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision 10 V reference for 16-bit SAR ADC and isolated current-sense amplifier biasing. Use Value: Maintains <±0.02% total error budget across −25°C to +70°C ambient with no external compensation. |
| Energy Management Meters | Automotive Body Control Modules |
Use Scenario: DIN-rail mounted kWh meter with anti-tampering detection and metrology-grade accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for polyphase energy measurement ICs and tamper-detection comparators. Use Value: Delivers long-term stability (<120 ppm drift over 1000 hrs) and thermal hysteresis <0.08%, critical for revenue-grade billing. |
Use Scenario: 12 V battery-supplied HVAC control unit requiring accurate temperature and pressure sensor conditioning. IC Role / Device Role / Timing Role: Stable 10 V reference for microcontroller ADC and analog front-end op-amps in harsh automotive environments. Use Value: Qualified to AEC-Q100 Grade 3 (−40°C to +85°C), enabling reliable operation without derating in under-hood applications. |
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 | ±0.5% initial tolerance, 50 ppm/°C max tempco, same SOT-23-3 package | Lower accuracy but tighter tempco; suited for cost-sensitive industrial sensors where ±0.5% is acceptable | Select when absolute accuracy is secondary to long-term stability and lower production cost |
| REF43FH10QDBVRQ1 | Series reference, 10 V output, ±0.05% initial tolerance, 3 ppm/°C max tempco, requires output capacitor | Higher accuracy and lower drift, but demands external 1 μF ceramic capacitor and higher quiescent current (120 μA) | Choose for metrology-grade systems needing <±0.01% total error, accepting added BOM and layout complexity |
Compared with TL4050C10IDBZR, LM4040AIM3X-10 offers 5× tighter initial tolerance at similar cost; versus REF43FH10QDBVRQ1, it trades ultimate precision for zero-capacitor simplicity and 8× lower quiescent current-ideal for battery life-critical or space-constrained designs.
Availability
LM4040AIM3X-10 is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and automotive body control modules requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4040AIM3X-10 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, battery-operated, and industrial systems demanding high initial accuracy, low noise, and wide temperature operation - with LM4040AIM3X-10 targeting 10 V reference applications in AEC-Q100-compliant designs.
FAQ
What is the minimum operating current for LM4040AIM3X-10?
The LM4040AIM3X-10 requires a minimum operating current of 100 μA to maintain regulation at 10 V. This value is specified across the full industrial temperature range (−40°C to +85°C) and ensures stable output voltage within tolerance. Operating below this current may cause the device to exit regulation, resulting in unpredictable cathode voltage. The LM4040AIM3X-10 datasheet confirms this in Section 6.3 Recommended Operating Conditions.
Is LM4040AIM3X-10 pin-compatible with other LM4040 variants in SOT-23?
Yes, LM4040AIM3X-10 uses the standard DBZ (SOT-23-3) package with identical pinout: Cathode (Pin 1), Anode (Pin 2), and NC (Pin 3). All LM4040-N SOT-23 versions-including LM4040CIM3X-2.5, LM4040BIM3X-5.0, and LM4040AIM3X-10-share this mechanical and electrical pin mapping. However, voltage rating and tolerance grade differ, so substitution requires verification of system-level accuracy and current requirements.
Does LM4040AIM3X-10 require an output capacitor for stability?
No, LM4040AIM3X-10 does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load up to at least 100 nF, as confirmed in the "Features" and "Description" sections of the TI SNOS633K datasheet. This eliminates the need for external bypass components, reducing BOM count and PCB area-especially valuable in portable and miniaturized systems.
What is the thermal hysteresis specification for LM4040AIM3X-10?
The LM4040AIM3X-10 exhibits 0.08% thermal hysteresis, defined as the voltage difference measured at 25°C after cycling from −40°C and from +125°C. This low hysteresis ensures repeatable reference voltage behavior across thermal cycles, critical for applications like energy meters and calibration equipment where measurement repeatability directly impacts compliance and billing accuracy.
Can LM4040AIM3X-10 be used in automotive applications?
Yes, LM4040AIM3X-10 is qualified to AEC-Q100 Grade 3 (−40°C to +85°C) and is explicitly listed in TI's LM4040-N-Q1 automotive family. It meets automotive reliability and stress-test requirements, making it suitable for non-safety-critical automotive subsystems such as body control modules, HVAC controls, and infotainment power monitoring-provided system-level functional safety analysis is performed per ISO 26262.
LM4040AIM3X-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 103 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040AIM3X-10 FAQ
1.How can I place an order for LM4040AIM3X-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040AIM3X-10 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 LM4040AIM3X-10 reliable?
The price and inventory of LM4040AIM3X-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040AIM3X-10 is usually 5 days.
3.What payment methods are accepted for LM4040AIM3X-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040AIM3X-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040AIM3X-10?
LM4040AIM3X-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040AIM3X-10 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 LM4040AIM3X-10?
For technical support, including LM4040AIM3X-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040AIM3X-10 requirements.
6.How does Aetrix verify that LM4040AIM3X-10 is sourced from the original manufacturer or authorized distributors?
All LM4040AIM3X-10 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 LM4040AIM3X-10 meets industry standards.
7.What is the process for return or replacement of LM4040AIM3X-10?
All LM4040AIM3X-10 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040AIM3X-10, 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 LM4040AIM3X-10 part is unused and in its original packaging.
Return procedure for LM4040AIM3X-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040AIM3X-10 Tags
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TL431AIDBZR
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TL431BQDBZR
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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