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Texas Instruments LM4050CEM3X-8.2/NOPB
- Part No.:
- LM4050CEM3X-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3X-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,839
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Product details
Overview
LM4050CEM3X-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 ±0.5% initial tolerance (C grade) at 25°C, 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal conditioning in portable instrumentation.
For engineers reviewing the LM4050CEM3X-8.2/NOPB datasheet, LM4050CEM3X-8.2/NOPB pinout, LM4050CEM3X-8.2/NOPB application, or LM4050CEM3X-8.2/NOPB equivalent, this page provides verified electrical specifications, thermal behavior, industrial/extended temperature range operation (−40°C to 125°C), SOT-23 pin mapping, and validated alternative references for design-in and supply continuity.
Technical Context
The LM4050CEM3X-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 (120 Hz), enabling stable regulation under varying load currents from 74 μA to 15 mA.
It achieves ±0.5% output voltage tolerance over −40°C to 125°C via fuse-trimmed wafer-sort calibration and exhibits 2.3 mV thermal hysteresis after cycling between −40°C and 125°C - critical for repeatable metrology-grade measurements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage at 150 μA test current |
| Initial Tolerance | ±0.5% at 25°C (C grade), enabling direct use in 12-bit ADC reference designs without trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, limiting full-range drift to ±0.425% of 8.192 V |
| Min Operating Current | 74 μA at 25°C, supporting ultra-low-power battery-operated sensor nodes |
| Noise (10 Hz–10 kHz) | 150 μVrms, suitable for precision data acquisition systems requiring <1 LSB error in 16-bit converters |
| Dynamic Impedance | 0.6 Ω at 1 mA, ensuring <5 mV load regulation shift across 1–15 mA output current swing |
| Long-Term Stability | 120 ppm (1000 hrs), guaranteeing <1 mV output drift in 5-year field deployments |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 287°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated voltage rail; sinks all load + reference current; sets output voltage at cathode-to-anode potential |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; defines 0 V reference for cathode voltage; no internal connection to substrate |
| NC (Pin 3) | No internal connection | Left floating per datasheet; not bonded; must not be tied to any net to avoid parasitic coupling or ESD path disruption |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with any capacitive load up to 10 μF, eliminating BOM cost and layout area for external stabilization |
| Tolerates capacitive loads | Phase margin preserved across 1 pF–10 μF, enabling direct interface with ADC sample-and-hold inputs |
| Fixed 8.192 V output | Exact binary-scaled voltage (213 × 1 mV) optimized for 13-bit DAC/ADC full-scale alignment |
| Industrial & extended temp range | Specified from −40°C to 125°C, supporting automotive under-hood and industrial motor control applications |
| Low quiescent current | 74 μA minimum operating current enables >10-year battery life in wireless sensor transmitters |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter front-end with 16-bit sigma-delta ADC and lithium coin-cell power. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V full-scale reference for ADC conversion. Use Value: Enables ±0.5% absolute accuracy without calibration; 150 μVrms noise ensures <1 LSB error at 16-bit resolution. |
Use Scenario: Modular DAQ module for factory floor monitoring with isolated analog inputs. IC Role / Device Role / Timing Role: Precision voltage reference for multiplexed sensor signal conditioning chains. Use Value: 50 ppm/°C TC and 2.3 mV hysteresis ensure repeatable measurement across ambient shifts and thermal cycling. |
| Energy Management | Precision Audio Components |
Use Scenario: Smart electricity meter with anti-tampering detection and metrology-grade energy calculation. IC Role / Device Role / Timing Role: Reference source for polyphase watt-hour measurement ICs requiring traceable voltage scaling. Use Value: 120 ppm long-term stability meets IEC 62053-21 Class 0.2 accuracy requirements over 10-year service life. |
Use Scenario: High-fidelity DAC output stage in studio-grade audio interface with 24-bit resolution. IC Role / Device Role / Timing Role: Low-noise reference for DAC internal gain-setting and analog output buffer biasing. Use Value: 150 μVrms noise floor avoids audible hiss; 0.6 Ω dynamic impedance prevents distortion during fast transient loading. |
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 | 2.5 V adjustable reference; requires external resistors for 8.192 V; higher 22 Ω dynamic impedance | Needs resistor network and PCB area; less accurate due to resistor tolerance and tempco stacking | Choose only if existing TL431 footprint reuse is mandatory and 8.192 V accuracy <±1% is acceptable |
| MAX6008AEUR+T | 8.192 V fixed output; ±0.2% A-grade tolerance; 20 ppm/°C max TC; 85 μVrms noise | Higher accuracy and lower noise, but limited to −40°C to 85°C industrial range only | Select when tighter initial tolerance and lower noise are critical, and extended temperature operation is not required |
Compared with LM4050CEM3X-8.2/NOPB, TL431CDBZR demands external components and sacrifices accuracy, while MAX6008AEUR+T improves precision and noise but forfeits 125°C operation - making LM4050CEM3X-8.2/NOPB optimal for ruggedized, binary-aligned, wide-temperature embedded systems.
Availability
LM4050CEM3X-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, long-lifecycle support, and guaranteed TI original packaging.
Supply support for LM4050CEM3X-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 expertise in precision reference design and high-reliability manufacturing.
The LM4050-N series was engineered for space-constrained, low-power applications demanding metrology-grade voltage stability - particularly in battery-powered test equipment, industrial sensors, and automotive subsystems where size, accuracy, and thermal robustness are non-negotiable.
FAQ
What is the minimum operating current for LM4050CEM3X-8.2/NOPB at 125°C?
The LM4050CEM3X-8.2/NOPB requires a minimum operating current of 100 μA across the extended temperature range (−40°C to 125°C), as specified in Section 6.9 of the SNOS455G datasheet. This ensures stable 8.192 V regulation and maintains the ±0.5% tolerance specification under worst-case thermal conditions. Below this current, the device may exhibit increased output impedance and voltage deviation.
Does LM4050CEM3X-8.2/NOPB require an external capacitor for stability?
No, the LM4050CEM3X-8.2/NOPB does not require an external output capacitor for stability. Its internal design tolerates capacitive loads from 1 pF to 10 μF without oscillation, as confirmed in the "No Output Capacitor Required" feature and functional testing in Section 8.3 of the datasheet. This eliminates layout sensitivity and reduces BOM count in compact designs.
What is the thermal hysteresis performance of LM4050CEM3X-8.2/NOPB?
The LM4050CEM3X-8.2/NOPB exhibits 2.3 mV thermal hysteresis after cycling between −40°C and 125°C, measured as the voltage difference at 25°C before and after extreme temperature exposure. This value is documented in Table 6.9 (Electrical Characteristics: 8.2-V Option) and ensures repeatability in applications subject to repeated thermal cycling, such as outdoor environmental monitors.
Can LM4050CEM3X-8.2/NOPB be used in automotive applications?
The LM4050CEM3X-8.2/NOPB is not AEC-Q100 qualified; only the LM4050-N-Q1 variant carries Grade 1 qualification. While it operates across −40°C to 125°C and shares the same silicon process, LM4050CEM3X-8.2/NOPB lacks automotive-specific reliability testing (HTOL, ESD, vibration). For automotive use, specify LM4050CQEM3X-8.2/NOPB (Q1 version) instead.
What is the reverse dynamic impedance of LM4050CEM3X-8.2/NOPB at 1 mA?
The reverse dynamic impedance of LM4050CEM3X-8.2/NOPB is 0.6 Ω at 1 mA, 120 Hz, with 0.1×IR AC current superimposed, per Section 6.9 Electrical Characteristics. This low impedance ensures minimal output voltage shift (<0.6 mV) under 1 mA load transients - critical for maintaining reference integrity in multiplexed analog front-ends.
LM4050CEM3X-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
LM4050CEM3X-8.2/NOPB FAQ
1.How can I place an order for LM4050CEM3X-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3X-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 LM4050CEM3X-8.2/NOPB reliable?
The price and inventory of LM4050CEM3X-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 LM4050CEM3X-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3X-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3X-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3X-8.2/NOPB?
LM4050CEM3X-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3X-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 LM4050CEM3X-8.2/NOPB?
For technical support, including LM4050CEM3X-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3X-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3X-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3X-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 LM4050CEM3X-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3X-8.2/NOPB?
All LM4050CEM3X-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3X-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 LM4050CEM3X-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3X-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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