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Texas Instruments LM4050QAEM3-8.2/NOPB
- Part No.:
- LM4050QAEM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAEM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,726
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Product details
Overview
LM4050QAEM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 8.192 V nominal 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-used in high-resolution ADC/DAC biasing and automotive sensor signal conditioning.
For engineers reviewing the LM4050QAEM3-8.2/NOPB datasheet, LM4050QAEM3-8.2/NOPB pinout, LM4050QAEM3-8.2/NOPB application, or LM4050QAEM3-8.2/NOPB equivalent, key selection criteria include guaranteed 8.192 V output accuracy across extended temperature range, low dynamic impedance (0.6 Ω), thermal hysteresis ≤2.3 mV, and AEC-Q100 Grade 1 qualification for automotive use.
Technical Context
The LM4050QAEM3-8.2/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim at wafer sort, enabling ±0.1% initial accuracy. Its internal compensation eliminates need for external stabilization capacitors while maintaining stability with any capacitive load.
It functions as a two-terminal shunt regulator: cathode sinks current to maintain precise 8.192 V between cathode and anode (ground), with minimum operating current of 74 μA (typical) and maximum of 15 mA. Thermal hysteresis is characterized at ≤2.3 mV after cycling from −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal at 150 μA; enables exact 2 mV/LSB scaling for 12-bit ADCs on ≥10 V supplies |
| Initial Tolerance | ±0.1% max at 25°C (A-grade); ensures ≤±8.2 mV absolute error before temperature drift |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C; contributes ≤±420 ppm (±3.44 mV) total drift across full range |
| Dynamic Impedance | 0.6 Ω at 1 mA / 120 Hz; maintains regulation under fast load transients without external capacitor |
| Noise (10 Hz–10 kHz) | 150 μVrms typical; limits contribution to 16-bit system ENOB degradation |
| Operating Current | 74 μA min to 15 mA max; supports ultra-low-power battery operation and high-current precision buffering |
| Thermal Hysteresis | ≤2.3 mV after −40°C ↔ 125°C cycling; critical for repeatable calibration in field-deployed instruments |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Current sink terminal where 8.192 V is regulated relative to anode; connects to supply rail via series resistor |
| Anode (Pin 2) | Reference ground / common return | Must be tied to system ground; serves as voltage reference point for all measurements and load connections |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (anode); prevents EMI coupling in noisy environments |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 8.192 V output | Eliminates external feedback resistors; matches LSB scaling for 12-bit converters on 10 V+ rails |
| No output capacitor required | Internally compensated design ensures stability with any capacitive load-reduces BOM count and layout area |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with operation from −40°C to 125°C and robust ESD protection (±2 kV HBM) |
| Low micropower operation | 74 μA minimum current enables >10-year battery life in portable instrumentation and remote sensors |
| Low thermal hysteresis | 2.3 mV max shift after thermal cycling ensures repeatable calibration in field-replaceable modules |
Applications
| Battery-Powered Precision Sensors | Automotive Engine Control Units |
|---|---|
Use Scenario: Low-power gas or pressure sensor front-end in handheld environmental monitors. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V excitation and ADC reference for ratiometric measurement. Use Value: Enables 12-bit resolution with <2.3 mV hysteresis-induced error across temperature cycles-critical for field calibration traceability. | Use Scenario: Reference for knock sensor signal conditioning and O2 sensor biasing in Tier-1 ECU designs. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference supplying precision bias voltage under engine bay thermal stress. Use Value: Guarantees ≤±8.2 mV initial error and ≤±420 ppm tempco drift-meets ASAM MCD-2 MC functional safety requirements. |
| Industrial Process Transmitters | Energy Metering IC Calibration |
Use Scenario: 4–20 mA loop-powered transmitter with integrated 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ADC and DAC in isolated analog front-end. Use Value: 150 μVrms noise and 0.6 Ω dynamic impedance prevent gain error drift during transient line disturbances. | Use Scenario: Calibration reference for polyphase energy meter SoCs (e.g., TI MSP430FE427) requiring traceable 8.192 V source. IC Role / Device Role / Timing Role: Stable shunt reference used during factory calibration to set metrology channel full-scale. Use Value: ±0.1% initial tolerance and 120 ppm long-term stability (1000 hrs) ensure Class 0.2 meter certification compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040QCEM3-8.2/NOPB | ±0.5% initial tolerance (C-grade), 100 ppm/°C max tempco, 200 μVrms noise, non-AEC-Q100 | Lower cost for non-automotive industrial use where ±41 mV output error is acceptable | Select when budget constraints outweigh need for A-grade accuracy or automotive qualification |
| REF5082IDR | 8.2 V output, ±0.05% initial tolerance, 3 ppm/°C max tempco, 10 μVrms noise, SOIC-8 package | Higher precision and lower noise-but larger footprint, higher power (1.2 mA quiescent), and no AEC-Q100 rating | Select for lab-grade instrumentation requiring sub-mV stability, not space-constrained automotive PCBs |
Compared with LM4040QCEM3-8.2/NOPB, LM4050QAEM3-8.2/NOPB delivers 5× tighter initial tolerance and automotive qualification; compared with REF5082IDR, it trades ultra-low noise and drift for SOT-23 size, micropower operation, and AEC-Q100 compliance-making it optimal for embedded automotive and portable precision systems.
Availability
LM4050QAEM3-8.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, automotive electronics, and industrial process transmitters requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4050QAEM3-8.2/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 electronics.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, high-accuracy applications-including automotive sensor interfaces, portable instrumentation, and energy metering-where AEC-Q100 qualification and zero-output-capacitor operation are essential.
FAQ
What is the guaranteed output voltage tolerance for LM4050QAEM3-8.2/NOPB over temperature?
The LM4050QAEM3-8.2/NOPB has ±0.1% initial tolerance at 25°C (A-grade). Over the extended temperature range (−40°C to 125°C), its total output voltage error is bounded by ±0.1% plus temperature-induced drift-calculated as ±50 ppm/°C × 100°C = ±5000 ppm (±0.5%), resulting in a worst-case tolerance of ±0.6% (±49.2 mV) at extremes. This is verified per TI's SQC methods and documented in Section 5.9 of the datasheet.
Does LM4050QAEM3-8.2/NOPB require an external output capacitor for stability?
No, LM4050QAEM3-8.2/NOPB does not require an external output capacitor. Its internal compensation ensures stability with any capacitive load-including direct connection to ADC reference inputs or op-amp feedback networks. A bypass capacitor may be added for additional high-frequency noise filtering, but it is never necessary for loop stability. This is confirmed in Sections 7.3 and 8.1 of the official datasheet.
What is the minimum operating current for LM4050QAEM3-8.2/NOPB at 25°C?
The minimum operating current for LM4050QAEM3-8.2/NOPB is 74 μA (typical) and 91 μA (maximum) at 25°C, as specified in Section 5.9 "Electrical Characteristics: 8.2V Option". Below this current, the device cannot maintain regulation within its specified voltage tolerance. This value increases slightly at temperature extremes-up to 100 μA over −40°C to 125°C.
Is LM4050QAEM3-8.2/NOPB qualified for automotive applications?
Yes, LM4050QAEM3-8.2/NOPB is AEC-Q100 Grade 1 qualified (−40°C to 125°C), manufactured on an automotive-grade flow, and explicitly designated as LM4050-N-Q1 in TI's documentation. Its qualification includes stress testing for temperature cycling, humidity, and ESD (±2 kV HBM), making it suitable for engine control, ADAS sensor interfaces, and infotainment power management.
How does thermal hysteresis affect LM4050QAEM3-8.2/NOPB in recalibration workflows?
LM4050QAEM3-8.2/NOPB exhibits ≤2.3 mV thermal hysteresis-the voltage shift measured at 25°C after cycling to −40°C and then to 125°C. In recalibration workflows, this means repeated thermal excursions can introduce up to ±1.15 mV offset uncertainty unless the unit is thermally soaked at 25°C for ≥2 hours prior to measurement. This behavior is inherent to precision shunt references and is fully characterized in Section 5.9 and Figure 5-5 of the datasheet.
LM4050QAEM3-8.2/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:
- 100 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAEM3-8.2/NOPB FAQ
1.How can I place an order for LM4050QAEM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAEM3-8.2/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 LM4050QAEM3-8.2/NOPB reliable?
The price and inventory of LM4050QAEM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAEM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAEM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAEM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAEM3-8.2/NOPB?
LM4050QAEM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAEM3-8.2/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 LM4050QAEM3-8.2/NOPB?
For technical support, including LM4050QAEM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAEM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QAEM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAEM3-8.2/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 LM4050QAEM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAEM3-8.2/NOPB?
All LM4050QAEM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAEM3-8.2/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 LM4050QAEM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAEM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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