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Texas Instruments LM4050CIM3-8.2/NOPB
- Part No.:
- LM4050CIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,958
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Product details
Overview
LM4050CIM3-8.2/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), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA supply current 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 LM4050CIM3-8.2/NOPB datasheet, LM4050CIM3-8.2/NOPB pinout, LM4050CIM3-8.2/NOPB application, or LM4050CIM3-8.2/NOPB equivalent, this page provides verified specifications, validated pin functions, real-world use cases in data acquisition and energy management systems, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The LM4050CIM3-8.2/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 8.192 V output across −40°C to +125°C. Its dynamic impedance remains ≤0.6 Ω at 1 mA, supporting low-noise regulation without external capacitors.
It tolerates any capacitive load and requires no output capacitor - unlike series references - simplifying layout in space-constrained designs. The device achieves ±0.5% initial accuracy via wafer-level fuse trimming and maintains long-term stability of ≤120 ppm over 1000 hours at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - sets precise bias point for analog signal chains and ADC reference inputs. |
| Initial Tolerance | ±0.5% at 25°C (C-grade) - enables direct use in 12-bit systems without calibration. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to +125°C - ensures <±4.2 mV total drift across full operating range. |
| Operating Current | 74 μA min to 15 mA max - supports ultra-low-power sensor nodes and high-current precision DACs. |
| Output Noise | 150 μVrms (10 Hz–10 kHz) - meets SNR requirements for 16-bit data acquisition systems. |
| Dynamic Impedance | 0.6 Ω at 1 mA - minimizes load-induced voltage shift during fast transient events. |
| Long-Term Stability | ≤120 ppm over 1000 hrs - reduces recalibration frequency in field-deployed test equipment. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm footprint, surface-mount, thermally efficient with RθJA = 287°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage sense node | Connects to regulated rail; sinks all load + reference current; voltage accuracy defined here. |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; forms current path with cathode; no internal connection to substrate. |
| NC (Pin 3) | No internal connection | Must remain unconnected or floating; not tied to ground or any other net - avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 10 µF - eliminates BOM cost and board area for external C. |
| Fixed 8.192 V output | Binary-aligned voltage matches 13-bit full-scale (213 × 1 mV) - simplifies scaling in digital multimeters and audio DACs. |
| Low quiescent current | 74 μA minimum operating current - extends battery life in handheld calibrators and portable sensors. |
| Wide temperature range | Rated for −40°C to +125°C operation - suitable for under-hood automotive energy monitors and industrial PLC modules. |
| Low thermal hysteresis | 2.3 mV max after −40°C ↔ +125°C cycling - preserves measurement repeatability in thermal-cycling test fixtures. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld digital multimeter requiring stable reference for 16-bit SAR ADC during battery-powered operation. IC Role / Device Role / Timing Role: Shunt voltage reference providing 8.192 V reference node for ADC VREF input and analog front-end biasing. Use Value: Enables ±0.5% initial accuracy and <±4.2 mV total tempco drift - meeting Class II DMM accuracy standards without calibration. |
Use Scenario: Modular DAQ module acquiring thermocouple and strain gauge signals in factory-floor control cabinets. IC Role / Device Role / Timing Role: Precision shunt reference for programmable gain instrumentation amplifier (PGIA) and sigma-delta ADC reference buffer. Use Value: 150 μVrms noise and 0.6 Ω dynamic impedance maintain >92 dB SNR at 10 kSPS sampling rates. |
| Energy Management Units | Precision Audio Components |
Use Scenario: Solar microinverter monitoring unit measuring DC bus voltage and panel current with isolated ADCs. IC Role / Device Role / Timing Role: Primary shunt reference for isolated voltage sensing circuitry and MCU ADC reference. Use Value: 120 ppm long-term stability ensures <0.01% gain drift over 5-year field deployment - reducing recalibration intervals. |
Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise, stable bias for I/V conversion op-amps. IC Role / Device Role / Timing Role: Low-noise 8.192 V reference source for dual-rail op-amp biasing and DAC common-mode setting. Use Value: Binary-aligned 8.192 V output maps directly to 13-bit resolution - eliminating scaling error in 24-bit audio processing pipelines. |
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 100 ppm/°C max tempco; 100 μVrms noise; 60 μA min current; same SOT-23 package. | Lower accuracy and higher noise limit use in 12-bit systems only; unsuitable for 16-bit DAQ or metrology. | Select when cost sensitivity outweighs precision - LM4040CIM3-8.2/NOPB offers ~30% lower unit price but sacrifices 2× tempco and 1.5× noise. |
| ADR3480ARMZ | Series topology; 8.000 V output; ±0.1% initial accuracy; 12 ppm/°C max tempco; requires output capacitor. | Higher accuracy and lower drift, but needs external 1 µF capacitor and cannot sink current - incompatible with shunt-based topologies. | Choose only if redesigning for series reference architecture; ADR3480ARMZ is not drop-in - requires PCB layout change and new bias network. |
Compared with LM4050CIM3-8.2/NOPB, LM4040CIM3-8.2/NOPB trades precision for cost in less demanding applications, while ADR3480ARMZ delivers superior specs only in redesigned series-regulator circuits - neither is pin-compatible, and both require revalidation of loop stability and noise performance.
Availability
LM4050CIM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply with guaranteed long-term sourcing and traceable manufacturing lots.
Supply support for LM4050CIM3-8.2/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 family was engineered for space-constrained, high-accuracy applications including portable test equipment, industrial sensors, and automotive subsystems - emphasizing micropower operation, zero-capacitor stability, and binary-aligned voltage options.
FAQ
What is the exact output voltage and tolerance of LM4050CIM3-8.2/NOPB?
The LM4050CIM3-8.2/NOPB has a nominal reverse breakdown voltage of 8.192 V, with an initial tolerance of ±0.5% at 25°C (C-grade). Over the industrial temperature range (−40°C to +85°C), its total tolerance is ±68 mV, and over the extended range (−40°C to +125°C), it is ±82 mV - calculated using the 50 ppm/°C max temperature coefficient and voltage scaling.
Does LM4050CIM3-8.2/NOPB require an external output capacitor?
No, the LM4050CIM3-8.2/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC reference inputs or op-amp bias networks - eliminating the need for external stabilization components and reducing board space and BOM count.
What is the minimum operating current for LM4050CIM3-8.2/NOPB?
The LM4050CIM3-8.2/NOPB requires a minimum operating current of 74 μA at 25°C, rising to 95 μA over the industrial temperature range (−40°C to +85°C) and 100 μA over the extended range (−40°C to +125°C). Below this current, regulation degrades and output voltage deviates beyond specification limits.
How does LM4050CIM3-8.2/NOPB compare to LM4050AIM3-8.2/NOPB?
The LM4050CIM3-8.2/NOPB differs from LM4050AIM3-8.2/NOPB primarily in initial tolerance: C-grade is ±0.5% vs A-grade's ±0.1%. Both share identical 8.192 V nominal output, 50 ppm/°C max tempco, SOT-23 package, and operating current range. A-grade is suited for metrology-grade systems; C-grade targets cost-sensitive industrial applications where ±0.5% is sufficient.
Is LM4050CIM3-8.2/NOPB qualified for automotive applications?
No, LM4050CIM3-8.2/NOPB is not AEC-Q100 qualified. For automotive use, TI offers the LM4050-N-Q1 variant (e.g., LM4050CIM3-8.2Q1), which is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and manufactured on an automotive-grade flow - LM4050CIM3-8.2/NOPB is rated only for industrial and extended commercial temperature operation.
LM4050CIM3-8.2/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:
- 95 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CIM3-8.2/NOPB FAQ
1.How can I place an order for LM4050CIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIM3-8.2/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 LM4050CIM3-8.2/NOPB reliable?
The price and inventory of LM4050CIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIM3-8.2/NOPB?
LM4050CIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIM3-8.2/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 LM4050CIM3-8.2/NOPB?
For technical support, including LM4050CIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050CIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CIM3-8.2/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 LM4050CIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CIM3-8.2/NOPB?
All LM4050CIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIM3-8.2/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 LM4050CIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050CIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050CIM3-8.2/NOPB Tags
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