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Texas Instruments LM4050CIM3X-10
- Part No.:
- LM4050CIM3X-10
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CIM3X-10.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,786
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Product details
Overview
LM4050CIM3X-10 from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.5% initial tolerance (C-grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C and delivers stable reference voltage in space-constrained analog signal chains for data acquisition and portable instrumentation.
For engineers reviewing the LM4050CIM3X-10 datasheet, LM4050CIM3X-10 pinout, LM4050CIM3X-10 application, or LM4050CIM3X-10 equivalent, this page provides verified specifications, SOT-23 package details, thermal hysteresis (2.8 mV), dynamic impedance (0.7 Ω), and noise performance (150 μVrms, 10 Hz–10 kHz) critical for low-drift, battery-powered designs.
Technical Context
The LM4050CIM3X-10 uses bandgap reference architecture with curvature-corrected Zener-zap trimming to achieve ±0.5% accuracy at 25°C and maintain stability over −40°C to 125°C. Its shunt topology requires external current limiting but eliminates need for output capacitors and tolerates any capacitive load.
It features low dynamic impedance (0.7 Ω at 1 mA), wide operating current range (100 μA to 15 mA), and 120 ppm long-term stability after 1000 hours. Thermal hysteresis is specified at 2.8 mV across −40°C ↔ 125°C cycling, supporting high-reliability measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, tested at 150 μA |
| Initial Tolerance | ±0.5% (C-grade) at 25°C - defines baseline accuracy before temp/current drift |
| Temp Coefficient | 50 ppm/°C max over −40°C to 125°C - limits voltage drift to ±5 mV across full range |
| Min Operating Current | 100 μA (extended temp range) - sets lowest bias current for regulation |
| Dynamic Impedance | 0.7 Ω at 1 mA, 120 Hz - ensures minimal load-induced voltage shift |
| Wideband Noise | 150 μVrms, 10 Hz–10 kHz - impacts ADC reference SNR in precision digitization |
| Long-Term Stability | 120 ppm after 1000 hrs - quantifies aging-induced drift in mission-critical systems |
| Thermal Hysteresis | 2.8 mV over −40°C ↔ 125°C cycle - reflects non-recoverable voltage offset after thermal stress |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC MO-178AC compliant. Cathode (pin 1) carries shunt current; Anode (pin 2) is ground reference; Pin 3 is NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage sensing node | Connects to regulated supply rail via series resistor; voltage develops across it when current flows |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference for 10 V output |
| NC (Pin 3) | No internal connection | Must remain unconnected or floating; no electrical function or thermal benefit |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass caps |
| Tolerates capacitive loads | Stable operation with any value of output capacitance - simplifies filtering in noisy environments |
| Fixed 10 V breakdown voltage | Eliminates external resistor network needed for adjustable references - reduces BOM and layout complexity |
| Low 100 μA min operating current | Supports ultra-low-power operation in battery-backed systems and energy-harvesting applications |
| Industrial & extended temp range | Rated for −40°C to 125°C - suitable for automotive under-hood, industrial control, and outdoor equipment |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
|
Use Scenario: Handheld multimeters and portable oscilloscopes requiring stable 10 V reference for ADC full-scale calibration. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V reference for successive-approximation ADCs. Use Value: ±0.5% initial tolerance and 50 ppm/°C TC ensure <1 LSB error over temperature in 16-bit systems. |
Use Scenario: Modular DAQ modules in factory automation where multiple channels share a common reference rail. IC Role / Device Role / Timing Role: Precision shunt reference sourcing consistent 10 V for multiplexed sensor signal conditioning. Use Value: 0.7 Ω dynamic impedance minimizes channel-to-channel crosstalk during fast multiplexing. |
| Energy Management Units | Precision Audio Components |
|
Use Scenario: Battery monitoring ICs in UPS and solar charge controllers needing accurate 10 V threshold detection. IC Role / Device Role / Timing Role: Reference source for comparator-based overvoltage protection circuits. Use Value: 2.8 mV thermal hysteresis prevents false triggering during repeated thermal cycling in field deployments. |
Use Scenario: High-fidelity DAC reference in studio-grade audio interfaces requiring low-noise 10 V bias. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 10 V to R-2R ladder networks. Use Value: 150 μVrms wideband noise contributes <−102 dBFS noise floor - preserves dynamic range. |
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 | Adjustable 2.5 V reference (requires two external resistors); 22 Ω dynamic impedance; 150 μA min current | Requires resistor network for 10 V setup; higher output impedance increases load sensitivity | Choose if design already uses TL431 and needs flexibility; avoid when board space or low-impedance reference is critical |
| REF5010AIDR | Series reference; 10 V fixed; 3 ppm/°C TC; 1 mA min current; SOIC-8 package | Higher accuracy and lower drift, but larger footprint and higher quiescent current | Prefer for metrology-grade systems where 3 ppm/°C stability outweighs size/power penalties |
Compared with TL431CDBZR and REF5010AIDR, LM4050CIM3X-10 offers the smallest footprint (SOT-23), lowest quiescent current (100 μA), and zero external components for 10 V - making it optimal for miniaturized, battery-sensitive applications where ±0.5% tolerance is sufficient.
Availability
LM4050CIM3X-10 is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050CIM3X-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 high-volume manufacturing.
The LM4050-N family was engineered for space-constrained, micropower analog systems demanding stable voltage references across industrial and automotive temperature ranges - emphasizing simplicity, reliability, and ease of use.
FAQ
What is the minimum operating current for LM4050CIM3X-10 across its full temperature range?
The LM4050CIM3X-10 requires a minimum operating current of 100 μA when operating across the extended temperature range (−40°C to 125°C). This value is confirmed in Section 6.10 of the official TI datasheet (SNOS455G), and applies specifically to the C-grade 10 V variant. Below this current, regulation is not guaranteed. The LM4050CIM3X-10 must be biased above this threshold using an appropriate series resistor.
Does LM4050CIM3X-10 require an output capacitor for stability?
No, the LM4050CIM3X-10 does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization capacitors while maintaining stability with any capacitive load - a key feature highlighted in the TI datasheet. This simplifies layout and reduces BOM count. However, a small ceramic capacitor (e.g., 100 nF) may still be used for high-frequency noise suppression without affecting regulation.
What is the thermal hysteresis specification for LM4050CIM3X-10?
The thermal hysteresis of LM4050CIM3X-10 is 2.8 mV, measured as the voltage difference at 25°C after cycling between −40°C and 125°C. This parameter is explicitly listed in Table 6.10 of the TI datasheet (SNOS455G) under "Thermal Hysteresis (ΔT = −40°C to 125°C)". It reflects non-recoverable voltage shift due to mechanical stress in the silicon die and is critical for repeatable calibration in field-deployed equipment.
Is LM4050CIM3X-10 qualified for automotive applications?
No, LM4050CIM3X-10 is not automotive-qualified. It belongs to the standard LM4050-N series, rated for industrial (−40°C to 85°C) and extended (−40°C to 125°C) temperature ranges. For automotive use, TI offers the LM4050-N-Q1 variant (e.g., LM4050CIM3X-10Q1), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow. The LM4050CIM3X-10 itself lacks automotive qualification documentation and test reports.
What is the reverse dynamic impedance of LM4050CIM3X-10 and why does it matter?
The reverse dynamic impedance of LM4050CIM3X-10 is 0.7 Ω, measured at 1 mA and 120 Hz with 10% AC current injection. This low value means the device maintains tight regulation despite load current variations - critical for driving ADC reference inputs or comparator thresholds. A lower impedance directly reduces output voltage deviation (ΔV = Iload × Zdynamic) and improves PSRR in sensitive analog stages.
LM4050CIM3X-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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- 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
LM4050CIM3X-10 FAQ
1.How can I place an order for LM4050CIM3X-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIM3X-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 LM4050CIM3X-10 reliable?
The price and inventory of LM4050CIM3X-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIM3X-10 is usually 5 days.
3.What payment methods are accepted for LM4050CIM3X-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIM3X-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIM3X-10?
LM4050CIM3X-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIM3X-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 LM4050CIM3X-10?
For technical support, including LM4050CIM3X-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIM3X-10 requirements.
6.How does Aetrix verify that LM4050CIM3X-10 is sourced from the original manufacturer or authorized distributors?
All LM4050CIM3X-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 LM4050CIM3X-10 meets industry standards.
7.What is the process for return or replacement of LM4050CIM3X-10?
All LM4050CIM3X-10 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIM3X-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 LM4050CIM3X-10 part is unused and in its original packaging.
Return procedure for LM4050CIM3X-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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