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Texas Instruments LM4050CEM3-8.2/NOPB
- Part No.:
- LM4050CEM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,732
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Product details
Overview
LM4050CEM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 8.192 V reverse breakdown voltage with ±41 mV (±0.5%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz) at 150 μA operating current. It serves as a compact, capacitor-free reference for high-resolution ADCs and portable instrumentation.
For engineers reviewing the LM4050CEM3-8.2/NOPB datasheet, LM4050CEM3-8.2/NOPB pinout, LM4050CEM3-8.2/NOPB application, or LM4050CEM3-8.2/NOPB equivalent, key selection criteria include its C-grade 8.192 V output accuracy, 74–100 μA minimum operating current across −40°C to +125°C, no-output-capacitor operation, and SOT-23 thermal performance (RθJA = 287°C/W).
Technical Context
The LM4050CEM3-8.2/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.6 Ω at 1 mA, enabling stable regulation under varying load currents from 74 μA to 15 mA.
It operates without external capacitors and tolerates any capacitive load-critical for space-constrained battery-powered systems. The device achieves long-term stability of 120 ppm over 1000 hours and thermal hysteresis of 2.3 mV after cycling between −40°C and +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage at 150 μA test current |
| Initial Tolerance | ±41 mV (±0.5%) at 25°C - defines C-grade accuracy for cost-sensitive precision designs |
| Temp Coefficient | 50 ppm/°C max over −40°C to +125°C - ensures <±0.42% total drift across full industrial range |
| Min Operating Current | 74 μA (typical) to 100 μA (max over temp) - sets lowest bias current for ultra-low-power systems |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz) - impacts effective resolution in 16-bit+ data acquisition |
| Dynamic Impedance | 0.6 Ω at 1 mA - enables <1 mV load regulation shift across 1 mA current change |
| Long-Term Stability | 120 ppm over 1000 hours - supports calibration integrity in unattended field equipment |
Pinout & Package
LM4050CEM3-8.2/NOPB is housed in a 3-pin SOT-23 (DBZ) package measuring 2.92 mm × 1.30 mm, with exposed pad not connected internally. Pin 3 is NC (no internal connection); pins 1 and 2 are functional terminals only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated supply rail; sinks all current not drawn by load - determines output voltage via IR drop across external resistor |
| Anode (Pin 2) | Common reference return | Must be tied to system ground; forms the 0 V reference point for the 8.192 V cathode potential |
| NC (Pin 3) | No internal connection | Left floating or omitted in layout; no electrical function - avoids accidental shorting or parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-limited PCBs without stability-compromising external components |
| Tolerates capacitive loads | Supports direct connection to ADC input capacitors or filtering networks without oscillation risk |
| Fixed 8.192 V output | Matches binary-scaled reference needs for 13-bit systems (213 = 8192), simplifying ratio-metric design |
| Industrial & extended temp range | Rated for −40°C to +125°C operation - suitable for automotive under-hood and industrial control environments |
| Low quiescent current | 74 μA typical minimum operating current enables multi-year battery life in remote sensors |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and lithium coin-cell power. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V for ADC full-scale calibration. Use Value: Eliminates need for external decoupling capacitor, reducing BOM count and board area while maintaining ±0.5% accuracy over battery discharge. |
Use Scenario: Modular DAQ module sampling sensor signals at 100 kSPS with 16-bit resolution. IC Role / Device Role / Timing Role: Precision voltage reference for ADC reference input and DAC feedback path. Use Value: 150 μVrms noise and 0.6 Ω dynamic impedance ensure <1 LSB error contribution across full operating current range. |
| Energy Management Units | Precision Audio Components |
Use Scenario: Smart electricity meter with isolated current/voltage sensing and metrology-grade ADC. IC Role / Device Role / Timing Role: Primary shunt reference for polyphase energy measurement ASIC. Use Value: 120 ppm long-term stability and 2.3 mV thermal hysteresis preserve billing accuracy over 10+ year field deployment. |
Use Scenario: High-fidelity audio ADC front-end requiring low-noise, DC-accurate reference. IC Role / Device Role / Timing Role: Reference source for sigma-delta modulator and analog input stage. Use Value: 50 ppm/°C tempco and capacitor-free operation prevent thermal-induced distortion and simplify analog layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-8.2/NOPB | Higher min current (100 μA vs 74 μA typ), same 8.192 V, ±0.5% tolerance, but higher 200 μVrms noise | Lacks extended temperature rating (−40°C to +85°C only); unsuitable for automotive under-hood use | Select when lower cost is critical and extended temp range or lower noise is not required |
| REF5082IDBZR | Series reference (not shunt); 8.2 V output, ±0.05% initial accuracy, 3.5 μVrms noise, requires output capacitor | Higher accuracy and lower noise, but larger solution size and mandatory external capacitor | Select when ultra-low noise (<5 μVrms) and <±0.1% accuracy justify added complexity and footprint |
Compared with LM4040CIM3-8.2/NOPB, LM4050CEM3-8.2/NOPB offers extended temperature support and lower noise; versus REF5082IDBZR, it trades absolute accuracy and noise for zero-capacitor simplicity and minimal board area in shunt-configured systems.
Availability
LM4050CEM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, energy management units, and precision audio components requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050CEM3-8.2/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 high-reliability manufacturing.
LM4050CEM3-8.2/NOPB belongs to TI's LM4050-N precision shunt reference family, engineered for space-constrained, micropower applications demanding stable voltage references without external stabilization components.
FAQ
What is the minimum operating current for LM4050CEM3-8.2/NOPB across temperature?
The LM4050CEM3-8.2/NOPB has a typical minimum operating current of 74 μA at 25°C, rising to 100 μA maximum over the full −40°C to +125°C range. This ensures reliable regulation even at elevated temperatures where leakage increases, and defines the lowest bias current usable in battery-powered designs without risking dropout.
Does LM4050CEM3-8.2/NOPB require an output capacitor for stability?
No, LM4050CEM3-8.2/NOPB does not require an output capacitor. Its internal design eliminates the need for external stabilization, and it tolerates any capacitive load - a key advantage for compact layouts where board space is constrained and parasitic capacitance cannot be fully controlled.
What is the reverse dynamic impedance of LM4050CEM3-8.2/NOPB?
The reverse dynamic impedance of LM4050CEM3-8.2/NOPB is 0.6 Ω (maximum) at 1 mA test current and 120 Hz. This low value ensures minimal output voltage variation under changing load conditions - critical for maintaining ADC reference accuracy in systems with variable current draw.
How does the 8.192 V output of LM4050CEM3-8.2/NOPB benefit data conversion systems?
The 8.192 V output of LM4050CEM3-8.2/NOPB corresponds exactly to 213, enabling seamless ratio-metric scaling in 13-bit and higher-resolution ADCs. This simplifies firmware calibration, reduces quantization error in binary-aligned systems, and improves effective number of bits (ENOB) in metrology applications.
Is LM4050CEM3-8.2/NOPB qualified for automotive applications?
No, LM4050CEM3-8.2/NOPB is not AEC-Q100 qualified. For automotive use, TI offers the LM4050-N-Q1 variant (e.g., LM4050CQEM3-8.2/NOPB), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow - LM4050CEM3-8.2/NOPB is rated for industrial and extended temperature ranges only.
LM4050CEM3-8.2/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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- 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:
- 100 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CEM3-8.2/NOPB FAQ
1.How can I place an order for LM4050CEM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3-8.2/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 LM4050CEM3-8.2/NOPB reliable?
The price and inventory of LM4050CEM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CEM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3-8.2/NOPB?
LM4050CEM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3-8.2/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 LM4050CEM3-8.2/NOPB?
For technical support, including LM4050CEM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3-8.2/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 LM4050CEM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3-8.2/NOPB?
All LM4050CEM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3-8.2/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 LM4050CEM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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