My Inquiry
My Account
Texas Instruments LM4050QBIM3-8.2/NOPB
- Part No.:
- LM4050QBIM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,351
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QBIM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 8.192 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 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-enabling stable regulation in battery-powered data acquisition and automotive sensor signal conditioning.
For engineers reviewing the LM4050QBIM3-8.2/NOPB datasheet, LM4050QBIM3-8.2/NOPB pinout, LM4050QBIM3-8.2/NOPB application, or LM4050QBIM3-8.2/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 8.192 V output matched to 12-bit ADC LSB scaling, low 74 μA minimum operating current, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4050QBIM3-8.2/NOPB implements a curvature-corrected bandgap shunt reference architecture with Zener-zap trim at wafer sort, ensuring ±0.1% accuracy at 25°C. Its internal compensation eliminates external capacitor requirements while maintaining stability across capacitive loads up to 10 nF.
It functions as a two-terminal device: cathode regulates voltage relative to anode (ground), with dynamic impedance of 0.6 Ω at 1 mA and thermal hysteresis of 2.3 mV after −40°C/125°C cycling. The "Q" suffix confirms AEC-Q100 Grade 1 qualification for automotive applications.
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)-guarantees ≤±8.2 mV absolute error before temperature or aging effects. |
| Temp. Coefficient | ≤50 ppm/°C over −40°C to 125°C-limits drift to ≤±410 μV across full range, critical for metering accuracy. |
| Min Operating Current | 74 μA typical at 25°C-supports ultra-low-power operation in wake-on-event sensor nodes. |
| Max Operating Current | 15 mA-sets upper bound for series resistor sizing and power dissipation (max 280 mW at 25°C). |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz)-directly impacts effective resolution in high-precision 16+ bit SAR ADC references. |
| Long-Term Stability | 120 ppm after 1000 hrs-quantifies baseline voltage shift under continuous bias, relevant for calibration interval planning. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with gull-wing leads. Pin 3 is NC (no internal connection) and must be left floating or tied to pin 2 per TI layout guidance for EMI-sensitive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to supply rail via series resistor; voltage referenced to anode; carries total current (IQ + IL). |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; serves as voltage reference point for all measurements and feedback paths. |
| NC (Pin 3) | No internal connection | Unused terminal; leave unconnected or tie to pin 2 only in high-EMI environments to reduce coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 8.192 V output | Eliminates external resistor divider; enables direct interface with 12-bit ADCs requiring 2 mV/LSB full-scale. |
| No output capacitor required | Reduces BOM count and board area; maintains stability with any capacitive load up to 10 nF. |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to 125°C) and lifetime reliability in safety-critical ECUs. |
| Low 74 μA min operating current | Supports energy harvesting and coin-cell operation in portable instrumentation and wireless sensors. |
| 50 ppm/°C max tempco | Ensures <±0.5% output variation over full industrial range-critical for precision analog front-ends in test equipment. |
Applications
| Battery-Powered Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Portable multimeter or handheld oscilloscope acquiring 12-bit ADC samples from Li-ion powered supply. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 8.192 V reference for ADC full-scale calibration. Use Value: Enables consistent 2 mV/LSB resolution without trimming; low 74 μA quiescent current extends battery life beyond 100 hours. |
Use Scenario: Engine control unit measuring exhaust gas oxygen sensor output with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Precision reference for ratiometric ADC conversion, rejecting supply rail variation. Use Value: AEC-Q100 Grade 1 rating ensures operation at 125°C junction temperature; 50 ppm/°C tempco maintains <±0.5% measurement accuracy across engine thermal cycles. |
| Energy Metering Calibration | Industrial Process Controller Reference |
|
Use Scenario: Smart electricity meter performing metrology-grade active/reactive energy calculation using 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary reference for ADC and DAC in isolated analog signal chain. Use Value: 150 μVrms noise floor supports >100 dB SNR; 120 ppm long-term stability reduces annual recalibration frequency. |
Use Scenario: PLC analog I/O module converting 4–20 mA sensor inputs to digital values for closed-loop PID control. IC Role / Device Role / Timing Role: Stable reference for precision current-to-voltage conversion and ADC reference. Use Value: SOT-23 footprint allows dense channel packing; no-output-capacitor design simplifies conformal coating and reduces failure modes in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040QBIM3-8.2/NOPB | Higher 100 μA min operating current; 100 ppm/°C max tempco; same 8.192 V output and SOT-23 package. | Less suitable for ultra-low-power wake-on-event systems; acceptable for cost-sensitive automotive modules where 0.1% tolerance is not mandatory. | Select when lower precision (±0.5%) and relaxed tempco are acceptable, and supply current margin exceeds 100 μA. |
| REF5082IDBZR | Series reference (not shunt); 8.2 V output; ±0.05% initial accuracy; 3 ppm/°C tempco; SOIC-8 package. | Requires external bypass capacitor and higher quiescent current (1.1 mA); incompatible with shunt topology constraints. | Choose only if system architecture permits series configuration and demands sub-10 ppm/°C stability for metrology-grade applications. |
Compared with LM4040QBIM3-8.2/NOPB, the LM4050QBIM3-8.2/NOPB delivers tighter initial tolerance and lower tempco at identical package size and voltage, while REF5082IDBZR offers superior stability but mandates redesign for series topology and larger footprint-making LM4050QBIM3-8.2/NOPB optimal for space- and power-constrained shunt-based designs requiring AEC-Q100 compliance.
Availability
LM4050QBIM3-8.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, and energy metering systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QBIM3-8.2/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 automotive-grade component validation.
The LM4050-N product line was engineered specifically for space-constrained, high-accuracy applications demanding micropower operation, zero-output-capacitor stability, and automotive-grade reliability-targeting data acquisition, sensor signal chains, and industrial metrology.
FAQ
What is the operating temperature range for LM4050QBIM3-8.2/NOPB?
The LM4050QBIM3-8.2/NOPB is rated for −40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This extended range ensures reliable operation in under-hood automotive environments and industrial control cabinets where thermal stress is significant. The device maintains its ±0.1% initial tolerance and ≤50 ppm/°C temperature coefficient across this full range, as verified in TI's production testing.
Does LM4050QBIM3-8.2/NOPB require an external output capacitor?
No, the LM4050QBIM3-8.2/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load up to 10 nF, simplifying layout and reducing BOM count. While a bypass capacitor may be added for additional noise filtering, it is not necessary for basic regulation-unlike many older shunt references that demand strict capacitor selection.
How does the 8.192 V output of LM4050QBIM3-8.2/NOPB benefit ADC applications?
The 8.192 V output of LM4050QBIM3-8.2/NOPB provides exactly 2 mV per LSB for 12-bit analog-to-digital converters operating with ≥10 V supplies. This eliminates scaling errors and simplifies firmware calibration, directly supporting precision measurement in energy meters, data loggers, and test equipment where LSB-level accuracy is critical to system specification.
What is the minimum cathode current required for LM4050QBIM3-8.2/NOPB regulation?
The LM4050QBIM3-8.2/NOPB requires a minimum cathode current of 74 μA (typical) at 25°C to maintain regulation, increasing to 100 μA at −40°C to +125°C. This ultra-low threshold enables use in energy-harvesting systems and always-on sensor nodes powered by microampere-level sources, while still supporting up to 15 mA maximum current for higher-load applications.
Is LM4050QBIM3-8.2/NOPB pin-compatible with other LM4050 variants?
Yes, all LM4050xIM3 variants-including LM4050QBIM3-8.2/NOPB-share identical SOT-23 (DBZ) pinout and mechanical footprint. Pin 1 is cathode, Pin 2 is anode (ground), and Pin 3 is NC. This allows drop-in replacement across voltage options (2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, 10 V) and grade variants (A/B/C, industrial/automotive) without PCB redesign.
LM4050QBIM3-8.2/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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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
LM4050QBIM3-8.2/NOPB FAQ
1.How can I place an order for LM4050QBIM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-8.2/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 LM4050QBIM3-8.2/NOPB reliable?
The price and inventory of LM4050QBIM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-8.2/NOPB?
LM4050QBIM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-8.2/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 LM4050QBIM3-8.2/NOPB?
For technical support, including LM4050QBIM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-8.2/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 LM4050QBIM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-8.2/NOPB?
All LM4050QBIM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-8.2/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 LM4050QBIM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QBIM3-8.2/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
