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Texas Instruments LM4050BEM3X-2.5/NOPB
- Part No.:
- LM4050BEM3X-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3X-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
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Product details
Overview
LM4050BEM3X-2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 2.5 V reverse breakdown voltage with ±5 mV (±0.2%) initial tolerance at 25°C, 41 μVrms wideband noise (10 Hz–10 kHz), and 50 ppm/°C max temperature coefficient across −40°C to 85°C. It operates from 65 μA to 15 mA, enabling use in low-power data acquisition and portable instrumentation.
For engineers reviewing the LM4050BEM3X-2.5/NOPB datasheet, LM4050BEM3X-2.5/NOPB pinout, LM4050BEM3X-2.5/NOPB application, or LM4050BEM3X-2.5/NOPB equivalent, this device serves as a space-constrained, capacitor-tolerant 2.5 V reference requiring no output capacitor, supporting stable operation with capacitive loads up to 10 nF while maintaining <0.8 mV load regulation over 1 mA current change.
Technical Context
The LM4050BEM3X-2.5/NOPB employs bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, achieving ±50 ppm/°C max TC over full industrial temperature range. Its dynamic impedance remains ≤0.3 Ω at 1 mA, ensuring minimal output perturbation under varying load currents.
It features fuse-trimmed reverse breakdown voltage during wafer sort for grade-B accuracy, supports operation without external stabilization capacitors, and tolerates any capacitive load - including ceramic decoupling caps used in ADC reference rails and sensor signal conditioning circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal; enables precise 12-bit+ ADC reference scaling and DAC biasing in 3.3 V systems. |
| Initial Tolerance | ±5 mV (±0.2%) at 25°C; reduces calibration overhead in factory-trimmed instrumentation. |
| Temp Coefficient | ≤50 ppm/°C max (−40°C to 85°C); ensures ≤±1.3 mV drift over full industrial range. |
| Operating Current | 65 μA min to 15 mA max; supports ultra-low-power sleep modes and high-accuracy active measurement. |
| Output Noise | 41 μVrms (10 Hz–10 kHz); preserves SNR in 16-bit SAR ADC references and precision op-amp feedback. |
| Dynamic Impedance | 0.3 Ω typical at 1 mA; minimizes load-induced voltage shift in multiplexed sensor front-ends. |
| Long-Term Stability | 120 ppm (1000 hrs); maintains calibration integrity in unattended field-deployed monitoring systems. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm footprint, surface-mount, thermally optimized for PCB trace dissipation. Three-terminal shunt configuration with cathode-anode polarity and NC pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference node | Connects to regulated supply rail; sinks all load + reference current; defines 2.5 V output potential. |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; establishes reference return path; not floating. |
| NC (Pin 3) | No internal connection | Left unconnected per datasheet; no electrical function; avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-constrained layouts without stability-compromising bypass components. |
| Tolerates capacitive loads | Stable with ≥10 nF ceramic capacitors - ideal for ADC reference decoupling and noise-sensitive analog rails. |
| Fixed 2.5 V breakdown | Matches standard 2.5 V ADC/DAC reference rails and simplifies ratio-metric sensor excitation design. |
| Low 41 μVrms noise | Preserves effective resolution in 16-bit data acquisition systems without external filtering. |
| 50 ppm/°C max tempco | Meets industrial-grade accuracy requirements without external temperature compensation circuitry. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeters and battery-powered sensor loggers requiring long-term accuracy on single-cell Li-ion supplies. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V for sigma-delta ADC excitation and microcontroller VREF input. Use Value: Enables >14-bit ENOB over temperature with no warm-up delay or calibration drift correction. |
Use Scenario: Modular DAQ modules in industrial PLCs acquiring thermocouple, RTD, and strain-gauge signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADCs and programmable gain amplifier bias networks. Use Value: Delivers <±0.01% total error contribution across −40°C to 85°C ambient, reducing system-level calibration frequency. |
| Process Control Transmitters | Precision Audio Components |
Use Scenario: 4–20 mA loop-powered field transmitters measuring pressure, flow, or level in hazardous environments. IC Role / Device Role / Timing Role: Stable 2.5 V reference for current-loop DAC and sensor signal conditioning amplifiers. Use Value: Maintains loop accuracy within ±0.1% FSR over 15-year field life, meeting SIL-2 functional safety margin requirements. |
Use Scenario: High-fidelity audio ADC/DAC boards where reference noise directly impacts THD+N performance. IC Role / Device Role / Timing Role: Low-noise 2.5 V reference for audio codec analog front-end and headphone amplifier biasing. Use Value: Contributes <0.0005% THD+N floor, enabling >110 dB dynamic range in professional audio interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B25IDBZR | Same 2.5 V, ±0.2% tolerance, but higher 60 μVrms noise and 75 ppm/°C max tempco; SOT-23-3 package. | Acceptable for cost-sensitive 12-bit systems; less suitable for 16-bit+ metrology-grade designs. | Select TL4050B25IDBZR only when noise and tempco margins allow relaxed specification compliance. |
| ADR3425ARJZ-R7 | 2.5 V series reference (not shunt); requires 100 μA minimum supply current; 12 ppm/°C max tempco; 8 μVrms noise. | Requires dedicated supply rail; incompatible with shunt topology; superior for ultra-low-noise, low-tempco needs. | Choose ADR3425ARJZ-R7 only when board layout permits series topology and lower noise/tempco justify added complexity. |
Compared with TL4050B25IDBZR, LM4050BEM3X-2.5/NOPB delivers 19 μVrms lower noise and 25 ppm/°C tighter tempco; versus ADR3425ARJZ-R7, it offers shunt flexibility and lower quiescent current but trades off absolute precision and noise performance.
Availability
LM4050BEM3X-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and process control transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050BEM3X-2.5/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 decades of leadership in precision reference design and automotive-grade reliability validation.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and industrial-grade measurement systems where stability, low noise, and temperature resilience are critical.
FAQ
What is the minimum operating current for LM4050BEM3X-2.5/NOPB?
The LM4050BEM3X-2.5/NOPB requires a minimum operating current of 65 μA across its full industrial temperature range (−40°C to 85°C). At 25°C, the typical minimum is 60 μA. Below this threshold, regulation degrades and output voltage deviates beyond specified tolerance. This value is confirmed in Section 6.6 of the SNOS455G datasheet under "IRMIN".
Does LM4050BEM3X-2.5/NOPB require an external output capacitor?
No, LM4050BEM3X-2.5/NOPB does not require an external output capacitor for stability. Its internal design eliminates the need for such components while remaining stable with any capacitive load - including 10 nF ceramic decoupling caps commonly used on ADC reference inputs. This is explicitly stated in the Features section and verified in the Functional Description of the SNOS455G datasheet.
What is the thermal hysteresis specification for LM4050BEM3X-2.5/NOPB?
The thermal hysteresis of LM4050BEM3X-2.5/NOPB is 0.7 mV, defined as the voltage difference measured at 25°C after cycling between −40°C and 125°C. This parameter reflects repeatability after thermal stress and is specified in Table 6.6 of the SNOS455G datasheet under "VHYST" for the 2.5-V option.
Is LM4050BEM3X-2.5/NOPB qualified for automotive applications?
No, LM4050BEM3X-2.5/NOPB is not AEC-Q100 qualified. It belongs to the industrial-grade LM4050-N family. For automotive use, TI offers the LM4050-N-Q1 variant (e.g., LM4050BEM3X-2.5Q1), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow - as noted in the Features and Device Information sections of SNOS455G.
What is the reverse dynamic impedance of LM4050BEM3X-2.5/NOPB?
The reverse dynamic impedance of LM4050BEM3X-2.5/NOPB is 0.3 Ω typical, measured at 1 mA DC current with 0.1 mA AC ripple at 120 Hz. This low impedance ensures minimal output voltage variation under dynamic load changes - critical for high-resolution ADC reference stability. The value is documented in Table 6.6 of the SNOS455G datasheet under "ZR".
LM4050BEM3X-2.5/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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3X-2.5/NOPB FAQ
1.How can I place an order for LM4050BEM3X-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3X-2.5/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 LM4050BEM3X-2.5/NOPB reliable?
The price and inventory of LM4050BEM3X-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3X-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3X-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3X-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3X-2.5/NOPB?
LM4050BEM3X-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3X-2.5/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 LM4050BEM3X-2.5/NOPB?
For technical support, including LM4050BEM3X-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3X-2.5/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3X-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3X-2.5/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 LM4050BEM3X-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3X-2.5/NOPB?
All LM4050BEM3X-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3X-2.5/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 LM4050BEM3X-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3X-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BEM3X-2.5/NOPB Tags
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