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Texas Instruments LM4050BIM3X-2.0
- Part No.:
- LM4050BIM3X-2.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3X-2.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,002
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Product details
Overview
LM4050BIM3X-2.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a nominal 2.048 V reverse breakdown voltage with ±0.2% initial tolerance (B-grade), 50 ppm/°C max temperature coefficient, and 60 μA minimum operating current. It operates across −40°C to 85°C industrial temperature range and serves as a stable reference in low-power analog signal chains.
For engineers reviewing the LM4050BIM3X-2.0 datasheet, LM4050BIM3X-2.0 pinout, LM4050BIM3X-2.0 application, or LM4050BIM3X-2.0 equivalent, key selection criteria include output voltage accuracy over temperature, dynamic impedance (<0.3 Ω), capacitive load stability, long-term drift (120 ppm), and compatibility with space-constrained battery-powered systems.
Technical Context
The LM4050BIM3X-2.0 uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its design eliminates need for external output capacitor while maintaining stability with any capacitive load up to 10 μF.
It functions as a two-terminal device: cathode accepts input current and sets reference voltage at anode (ground-referenced), with no internal connection on pin 3. Dynamic impedance remains below 0.3 Ω at 1 mA, enabling high PSRR and low noise (41 μVrms, 10 Hz–10 kHz) in precision ADC/DAC biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - precise value enables exact 12-bit full-scale scaling in 2.048 V reference systems. |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - ensures ≤±4.1 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 85°C - contributes ≤±6.5 mV drift across full industrial range. |
| Min Operating Current | 60 μA - supports ultra-low-power operation in sleep-mode sensor interfaces and energy-harvesting circuits. |
| Dynamic Impedance | 0.3 Ω at 1 mA - maintains reference stability under varying load currents typical in multiplexed data acquisition. |
| Wideband Noise | 41 μVrms, 10 Hz–10 kHz - meets SNR requirements for 16-bit+ SAR ADCs without additional filtering. |
| Long-Term Stability | 120 ppm after 1000 hrs - predictable aging behavior simplifies calibration interval planning in test equipment. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, body size 2.92 mm × 1.30 mm, thermal resistance RθJA = 287°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Input current terminal | Accepts shunt current; voltage develops across external resistor to set reference node at Anode. |
| Anode (Pin 2) | Reference output / ground return | Provides 2.048 V referenced to system ground; must be connected to GND for proper regulation. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 per TI specification; no electrical function or thermal benefit. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with 0–10 μF capacitive loads - reduces BOM count and PCB area in portable designs. |
| Fixed 2.048 V output | Exact binary-scaled voltage ideal for 12-bit systems (211 = 2048) - eliminates trimming in digital multimeters and data loggers. |
| Micropower operation | 60 μA min current enables >10-year battery life in coin-cell-powered IoT sensors. |
| Low dynamic impedance | 0.3 Ω at 1 mA - minimizes load-induced voltage shift during multiplexer switching in multi-channel DAQ. |
| Industrial temp range | −40°C to +85°C operation - qualified for deployment in factory automation and outdoor instrumentation. |
Applications
| Portable Medical Sensors | Data Acquisition Systems |
|---|---|
Use Scenario: Wearable ECG front-end with 16-bit ADC sampling at 1 kSPS powered by CR2032 battery. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.048 V for ADC VREF, directly biased from LDO output. Use Value: 41 μVrms noise and 60 μA min current enable >90 dB SNR and >5-year battery life without capacitor footprint. |
Use Scenario: 8-channel thermocouple reader with cold-junction compensation and 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Precision reference for ADC and programmable gain amplifier offset calibration. Use Value: ±0.2% initial tolerance and 50 ppm/°C TC ensure ≤0.1% total reference error across −20°C to 70°C ambient. |
| Energy Metering Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted smart meter with metrology SoC requiring traceable voltage reference. IC Role / Device Role / Timing Role: Primary shunt reference for polyphase voltage sensing channel calibration. Use Value: 120 ppm long-term stability and thermal hysteresis <0.7 mV support annual recalibration intervals per IEC 62053. |
Use Scenario: In-cabin ambient light sensor interface with LIN bus reporting in automotive BCM. IC Role / Device Role / Timing Role: Stable 2.048 V reference for photodiode transimpedance amplifier and ADC. Use Value: Industrial temperature rating and ±2000 V HBM ESD robustness meet OEM requirements for non-safety-critical modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3X-2.0 | Higher 100 μA min operating current; 75 ppm/°C max TC; same SOT-23 package. | Less suitable for sub-100 μA systems; higher drift limits use in high-accuracy metrology. | Select LM4050BIM3X-2.0 when <60 μA supply headroom or <50 ppm/°C TC is mandatory. |
| ADR3420ARJZ-R7 | Series reference (not shunt); requires 100 μA quiescent current; 10 ppm/°C TC; 2.048 V output. | Needs dedicated supply rail; incompatible with shunt topology; superior TC but higher power. | Choose ADR3420ARJZ-R7 only if series architecture fits system topology and lower TC justifies added complexity. |
Compared with LM4040BIM3X-2.0 and ADR3420ARJZ-R7, the LM4050BIM3X-2.0 uniquely balances ultra-low operating current, tight initial tolerance, and shunt simplicity-making it optimal for space- and power-constrained 2.048 V reference nodes where ground-referenced biasing is preferred.
Availability
LM4050BIM3X-2.0 is available at Aetrix Electronics and suitable for portable medical sensors, data acquisition systems, energy metering modules, and automotive body control units requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM4050BIM3X-2.0 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.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and industrial measurement applications-designed to replace bulkier three-terminal references without sacrificing accuracy or stability.
FAQ
What is the output voltage tolerance of LM4050BIM3X-2.0 at 25°C?
The LM4050BIM3X-2.0 has a guaranteed initial reverse breakdown voltage tolerance of ±0.2% at 25°C, corresponding to ±4.096 mV around the nominal 2.048 V output. This B-grade specification is verified during wafer sort using Zener-zap trimming and applies to all units shipped as LM4050BIM3X-2.0.
Does LM4050BIM3X-2.0 require an external output capacitor?
No, the LM4050BIM3X-2.0 does not require an external output capacitor. Its internal design ensures stability with any capacitive load from 0 to 10 μF, eliminating capacitor footprint and cost in compact layouts. This is confirmed in TI's SNOS455G datasheet Section 1 and Figure 15.
What is the minimum operating current for LM4050BIM3X-2.0?
The LM4050BIM3X-2.0 requires a minimum operating current of 60 μA at 25°C, increasing to 65 μA across the full −40°C to 85°C industrial temperature range. Operation below this current may result in loss of regulation and increased output impedance.
Can LM4050BIM3X-2.0 be used in automotive applications?
The LM4050BIM3X-2.0 is rated for industrial temperature range (−40°C to 85°C) and carries ±2000 V HBM ESD rating, making it suitable for non-safety-critical automotive modules like body control units and cabin sensors. For AEC-Q100 Grade 1 compliance, TI offers the LM4050-N-Q1 variant-not the LM4050BIM3X-2.0.
What is the thermal hysteresis specification for LM4050BIM3X-2.0?
The LM4050BIM3X-2.0 exhibits ≤0.7 mV thermal hysteresis over a −40°C to 125°C cycle, defined as the voltage difference measured at 25°C after exposure to −40°C versus after exposure to 125°C. This value is specified in Section 6.5 of the SNOS455G datasheet and impacts repeatability in cyclic environmental testing.
LM4050BIM3X-2.0 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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 34µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3X-2.0 FAQ
1.How can I place an order for LM4050BIM3X-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3X-2.0 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 LM4050BIM3X-2.0 reliable?
The price and inventory of LM4050BIM3X-2.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3X-2.0 is usually 5 days.
3.What payment methods are accepted for LM4050BIM3X-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3X-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3X-2.0?
LM4050BIM3X-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3X-2.0 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 LM4050BIM3X-2.0?
For technical support, including LM4050BIM3X-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3X-2.0 requirements.
6.How does Aetrix verify that LM4050BIM3X-2.0 is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3X-2.0 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 LM4050BIM3X-2.0 meets industry standards.
7.What is the process for return or replacement of LM4050BIM3X-2.0?
All LM4050BIM3X-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3X-2.0, 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 LM4050BIM3X-2.0 part is unused and in its original packaging.
Return procedure for LM4050BIM3X-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BIM3X-2.0 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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