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Texas Instruments LM4050AEM3X-10/NOPB
- Part No.:
- LM4050AEM3X-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3X-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,066
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Product details
Overview
LM4050AEM3X-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 10 V output with ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 100 μA to 15 mA and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050AEM3X-10/NOPB datasheet, LM4050AEM3X-10/NOPB pinout, LM4050AEM3X-10/NOPB application, or LM4050AEM3X-10/NOPB equivalent, key selection criteria include its no-output-capacitor-required operation, capacitive-load tolerance, fixed 10 V breakdown voltage, sub-100 μA minimum operating current, and AEC-Q100 Grade 1 qualification of the automotive variant (LM4050QAIM3X-10/NOPB).
Technical Context
The LM4050AEM3X-10/NOPB uses bandgap-based Zener-zap trimmed shunt regulation with curvature-corrected temperature drift compensation, enabling stable 10 V reference performance across −40°C to +125°C. Its dynamic impedance remains ≤0.7 Ω at 1 mA, ensuring minimal load-induced voltage shift.
It requires no external capacitor for stability and tolerates arbitrary capacitive loads - a direct result of internal compensation eliminating phase-margin sensitivity. The device achieves ±120 ppm long-term stability after 1000 hours and exhibits only 2.8 mV thermal hysteresis over full temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, fixed and factory-trimmed - eliminates need for external adjustment in precision analog signal chains. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables single-point calibration in high-resolution data acquisition systems without trimming. |
| Temp Coefficient | ≤50 ppm/°C (max, −40°C to +125°C) - ensures <±5 mV drift over full industrial range, critical for battery-powered sensor nodes. |
| Min Operating Current | 100 μA (typical at 25°C) - allows ultra-low-power operation in energy-harvesting and coin-cell applications. |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz) - low enough for 16-bit+ SAR ADC reference without additional filtering. |
| Dynamic Impedance | 0.7 Ω (max at 1 mA, 120 Hz) - minimizes load-regulation error (<7 mV at 10 mA step) in varying-current circuits. |
| Long-Term Stability | 120 ppm (1000 hrs at 25°C) - supports >10-year calibration intervals in test equipment and medical devices. |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm. Pin 1 = Cathode (shunt current input), Pin 2 = Anode (ground reference), Pin 3 = NC (no internal connection, must be left floating or tied to Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current sink and voltage sensing node | Connects to regulated supply rail; sinks all excess current to maintain precise 10 V across Anode–Cathode. |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines the 0 V reference for the 10 V output at Cathode. |
| NC (Pin 3) | No internal connection | Electrically isolated; leave unconnected or tie to Anode - no functional impact on regulation. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for unconditional stability - reduces BOM count and PCB area in space-constrained designs. |
| Tolerates capacitive loads | Stable with any value or ESR of output capacitance - simplifies filtering for noise-sensitive ADC references. |
| Fixed 10 V breakdown voltage | Factory-trimmed Zener-zap process ensures exact 10.000 V output - avoids design-in of resistor dividers or trimming networks. |
| Low quiescent current | 100 μA minimum operating current - extends battery life in portable multimeters and handheld analyzers. |
| Industrial & extended temp support | Specified from −40°C to +125°C - suitable for under-hood automotive sensors and industrial PLC I/O modules. |
Applications
| Portable Data Loggers | High-Resolution ADC Biasing |
|---|---|
Use Scenario: Battery-powered environmental sensor node sampling temperature, humidity, and pressure at 1 kS/s. IC Role / Device Role / Timing Role: Provides stable 10 V reference for 18-bit SAR ADC, enabling ±0.5 LSB accuracy over temperature. Use Value: Eliminates need for external buffer or capacitor, reducing total solution size by 30% and extending 3.7 V Li-ion runtime by 12%. |
Use Scenario: Precision weigh scale with 24-bit delta-sigma ADC requiring ultra-low-drift excitation. IC Role / Device Role / Timing Role: Shunt reference supplying clean 10 V to ADC's REF+ input and bridge sensor excitation circuit. Use Value: 150 μVrms noise and 50 ppm/°C TC ensure <±10 ppm measurement error across 0–50°C ambient range. |
| Automotive Cabin Sensors | Calibration Equipment |
Use Scenario: Occupant detection module using capacitive sensing in vehicle seats, operating across −40°C to +105°C. IC Role / Device Role / Timing Role: Supplies stable reference for analog front-end comparators and offset calibration DACs. Use Value: AEC-Q100 qualified variant (LM4050QAIM3X-10/NOPB) ensures reliability; 2.8 mV thermal hysteresis prevents calibration drift during thermal cycling. |
Use Scenario: Benchtop multimeter calibration source requiring traceable 10 V output with <±10 ppm uncertainty. IC Role / Device Role / Timing Role: Primary voltage reference in metrology-grade divider chain, backed by 120 ppm/1000h stability. Use Value: Enables annual recalibration intervals without field adjustment - certified per ISO/IEC 17025 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5010IDR | Series reference (not shunt); 10 V output, 3 ppm/°C TC, 1.2 μVrms noise; requires 1.2 mA supply current. | Requires external pass transistor for high-current loads; unsuitable for low-IQ or floating-ground topologies. | Select when ultra-low noise and TC outweigh power budget constraints and board space is available for series topology. |
| LT1004CZ-10#TRPBF | Shunt reference; 10 V output, ±0.5% initial tolerance, 100 ppm/°C TC, 120 μVrms noise; min current = 45 μA. | Lower accuracy and higher drift limit use in <14-bit systems; not qualified for automotive or extended temp. | Select for cost-sensitive industrial controls where ±0.5% tolerance and 100 ppm/°C TC are acceptable. |
Compared with REF5010IDR and LT1004CZ-10#TRPBF, the LM4050AEM3X-10/NOPB uniquely balances micropower operation (100 μA min), A-grade precision (±0.1%), and shunt topology flexibility - making it optimal for battery-powered, space-constrained, and automotive-qualified 10 V reference needs.
Availability
LM4050AEM3X-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, high-resolution data acquisition, and automotive cabin sensor systems requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050AEM3X-10/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 over 50 years of innovation in precision analog ICs.
The LM4050-N product line delivers micropower shunt voltage references optimized for space- and power-constrained applications including portable test gear, sensor signal conditioning, and automotive subsystems.
FAQ
What is the minimum operating current for LM4050AEM3X-10/NOPB?
The LM4050AEM3X-10/NOPB has a typical minimum operating current of 100 μA at 25°C, increasing slightly to 110 μA at +125°C. This low quiescent requirement enables operation from micro-power sources such as energy harvesters or coin cells while maintaining 10 V regulation within ±0.1% tolerance.
Does LM4050AEM3X-10/NOPB require an external output capacitor?
No - the LM4050AEM3X-10/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load, including large ceramic or tantalum bypass caps used in ADC reference decoupling, eliminating a common design constraint of older shunt references.
What is the temperature coefficient specification for LM4050AEM3X-10/NOPB?
The LM4050AEM3X-10/NOPB has a maximum temperature coefficient of 50 ppm/°C over the full −40°C to +125°C range. This translates to a worst-case drift of ±5 mV across the extended temperature range, supporting high-accuracy applications like precision thermometry and calibrated sensor interfaces.
Is LM4050AEM3X-10/NOPB qualified for automotive applications?
The LM4050AEM3X-10/NOPB itself is not AEC-Q100 qualified; however, its automotive-grade counterpart LM4050QAIM3X-10/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and manufactured on TI's automotive flow. Both share identical electrical specs and SOT-23 packaging.
What is the wideband noise performance of LM4050AEM3X-10/NOPB?
The LM4050AEM3X-10/NOPB delivers 150 μVrms wideband noise over 10 Hz to 10 kHz at 150 μA operating current. This low-noise floor supports 16-bit+ ADC resolution without additional filtering, and its shunt architecture avoids the PSRR limitations common in series references.
LM4050AEM3X-10/NOPB 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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AEM3X-10/NOPB FAQ
1.How can I place an order for LM4050AEM3X-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3X-10/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 LM4050AEM3X-10/NOPB reliable?
The price and inventory of LM4050AEM3X-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AEM3X-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050AEM3X-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3X-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3X-10/NOPB?
LM4050AEM3X-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3X-10/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 LM4050AEM3X-10/NOPB?
For technical support, including LM4050AEM3X-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3X-10/NOPB requirements.
6.How does Aetrix verify that LM4050AEM3X-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3X-10/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 LM4050AEM3X-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050AEM3X-10/NOPB?
All LM4050AEM3X-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3X-10/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 LM4050AEM3X-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050AEM3X-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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