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Texas Instruments LM4050QAIM3-8.2/NOPB
- Part No.:
- LM4050QAIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
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Product details
Overview
LM4050QAIM3-8.2/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 8.192 V reverse breakdown voltage with ±0.1% (A-grade) initial tolerance 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 over −40°C to 125°C and requires no output capacitor.
For engineers reviewing the LM4050QAIM3-8.2/NOPB datasheet, LM4050QAIM3-8.2/NOPB pinout, LM4050QAIM3-8.2/NOPB application, or LM4050QAIM3-8.2/NOPB equivalent, this device serves as a stable, low-noise, automotive-grade reference for high-resolution ADCs, battery-powered instrumentation, and precision analog signal conditioning where space, thermal stability, and long-term drift (<120 ppm) are critical.
Technical Context
The LM4050QAIM3-8.2/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim at wafer sort, enabling ±0.1% accuracy without external feedback. Its internal compensation ensures stability with any capacitive load - including zero external capacitance - eliminating layout sensitivity.
As a two-terminal shunt regulator, it functions by sinking current through its cathode to maintain a precise 8.192 V across anode-to-cathode. Minimum operating current is 74 μA (typical) at 25°C and rises to 100 μA over the full −40°C to 125°C range, while dynamic impedance remains ≤0.6 Ω at 1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - enables exact 2 mV/LSB scaling for 12-bit ADCs operating from ≥10 V supplies. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - supports high-accuracy calibration without trimming in production test. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C - ensures <±0.425% total drift across automotive extended temperature range. |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz, IR = 150 μA) - limits quantization error in 16-bit+ data acquisition systems. |
| Operating Current | 74 μA to 15 mA - supports ultra-low-power sensor nodes and high-current precision buffers without redesign. |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees minimal calibration drift over product lifetime in energy metering applications. |
| Thermal Hysteresis | 2.3 mV (ΔT = −40°C ↔ 125°C) - defines repeatability error when cycling between extreme ambient conditions. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die attach pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Carries total current (IQ + IL); voltage referenced to Anode; must be driven above 8.192 V via series resistor to enable regulation. |
| Anode (Pin 2) | Reference ground / common return | Connected to system ground; forms the 0 V reference point for VOUT; all load current returns here. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (Anode); connects to die attach interface but has no circuit function. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications with operation up to 125°C junction temperature and robust ESD immunity (±2000 V HBM). |
| No output capacitor required | Internally compensated design eliminates need for external bypass, reducing BOM count and PCB area in space-constrained modules. |
| Tolerates capacitive loads | Stable with any value of output capacitance - simplifies filtering in noisy environments without risk of oscillation. |
| Low micropower operation | 74 μA minimum cathode current enables use in coin-cell-powered devices and always-on monitoring circuits. |
| Fixed 8.192 V option | Matches LSB scaling for 12-bit converters on 10 V rails (2 mV/LSB), avoiding resistor-divider errors and gain drift. |
Applications
| Battery-Powered Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Portable multimeter or handheld data logger powered by Li-ion or alkaline cells with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 8.192 V reference for 12-bit SAR ADC and internal DAC calibration. Use Value: Enables 0.025% full-scale accuracy over battery discharge (2.8–4.2 V) and temperature (−20°C to 70°C) without recalibration. |
Use Scenario: Engine control unit (ECU) measuring exhaust gas oxygen (EGO) sensor output under high-temperature hood conditions. IC Role / Device Role / Timing Role: Precision reference for ratiometric analog front-end amplifying millivolt-level sensor signals before digitization. Use Value: Maintains <±0.5 mV reference drift over 10-year life and thermal cycling, ensuring consistent air-fuel ratio calculation. |
| Energy Metering Reference | Industrial Process Controller ADC Reference |
|
Use Scenario: DIN-rail mounted smart electricity meter requiring metrology-grade accuracy per IEC 62053-21 Class 0.2. IC Role / Device Role / Timing Role: Primary voltage reference for isolated sigma-delta ADC measuring line voltage and current simultaneously. Use Value: Contributes <0.01% error budget margin with 120 ppm long-term stability and <2.3 mV thermal hysteresis. |
Use Scenario: Programmable logic controller (PLC) analog input module converting 4–20 mA sensor loops to digital values in factory automation. IC Role / Device Role / Timing Role: Stable 8.192 V reference for multi-channel 16-bit successive-approximation ADC with simultaneous sampling. Use Value: Supports 16-bit ENOB by limiting reference noise to 150 μVrms, enabling sub-0.0015% measurement resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5082IDR | Series reference (not shunt); 8.2 V output; ±0.05% initial accuracy; higher quiescent current (1.1 mA min). | Requires dedicated supply rail; unsuitable for floating or high-side sensing topologies where shunt topology is mandatory. | Select REF5082IDR only if system allows series architecture and demands tighter initial accuracy than ±0.1%. |
| ADR4580BRZ | Series reference; 8.0 V output; ±0.02% initial accuracy; 1.5 ppm/°C tempco; 10 μVrms noise (0.1–10 Hz). | Not pin-compatible; requires external decoupling; cannot replace shunt configuration without circuit redesign. | Choose ADR4580BRZ for ultra-low-noise, low-tempco lab-grade instrumentation where board space and topology permit series implementation. |
Compared with REF5082IDR and ADR4580BRZ, the LM4050QAIM3-8.2/NOPB offers unique advantages in shunt-based designs: zero external capacitor requirement, true two-terminal operation, AEC-Q100 qualification, and compatibility with existing SOT-23 layouts - making it the only drop-in solution for automotive and space-constrained shunt reference applications.
Availability
LM4050QAIM3-8.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, and energy metering applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4050QAIM3-8.2/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The LM4050-N/Q1 product line delivers micropower, high-accuracy shunt references for space-constrained, thermally demanding applications - designed specifically for automotive, industrial, and portable instrumentation where reliability and long-term stability are non-negotiable.
FAQ
What is the minimum operating current for LM4050QAIM3-8.2/NOPB at 25°C?
The LM4050QAIM3-8.2/NOPB has a typical minimum operating current of 74 μA at 25°C, with a maximum of 100 μA across the full −40°C to 125°C temperature range. This ensures reliable regulation even in ultra-low-power modes, and the LM4050QAIM3-8.2/NOPB maintains specified accuracy only when cathode current stays within this window.
Is LM4050QAIM3-8.2/NOPB pin-compatible with other LM4050 variants?
Yes - all LM4050-N and LM4050-N-Q1 SOT-23 variants, including LM4050QAIM3-8.2/NOPB, share identical pinout (Cathode/Anode/NC), package dimensions, and thermal characteristics. Voltage and grade differences do not affect mechanical or electrical interface compatibility, enabling direct substitution within the same voltage family.
Does LM4050QAIM3-8.2/NOPB require an external capacitor for stability?
No - the LM4050QAIM3-8.2/NOPB is internally compensated and remains stable with zero output capacitance. It also tolerates arbitrary capacitive loads, including ceramic, tantalum, or bulk electrolytic capacitors, without oscillation or phase-margin degradation - a key advantage over older shunt references.
What does the "/NOPB" suffix indicate in LM4050QAIM3-8.2/NOPB?
The "/NOPB" suffix denotes lead-free (Pb-free) and RoHS-compliant packaging. LM4050QAIM3-8.2/NOPB uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), allowing standard reflow assembly without baking. The underlying silicon and specifications are identical to Pb-bearing versions.
How is thermal hysteresis specified for LM4050QAIM3-8.2/NOPB?
Thermal hysteresis for LM4050QAIM3-8.2/NOPB is measured as 2.3 mV - defined as the difference in output voltage at 25°C after cycling to −40°C versus after cycling to 125°C. This parameter reflects mechanical stress-induced shifts in the reference voltage and is critical for applications involving repeated environmental temperature excursions.
LM4050QAIM3-8.2/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:
- ±0.1%
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAIM3-8.2/NOPB FAQ
1.How can I place an order for LM4050QAIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3-8.2/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 LM4050QAIM3-8.2/NOPB reliable?
The price and inventory of LM4050QAIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3-8.2/NOPB?
LM4050QAIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3-8.2/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 LM4050QAIM3-8.2/NOPB?
For technical support, including LM4050QAIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3-8.2/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 LM4050QAIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3-8.2/NOPB?
All LM4050QAIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3-8.2/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 LM4050QAIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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