My Inquiry
My Account
Texas Instruments LM4050QAIM3X8.2/NOPB
- Part No.:
- LM4050QAIM3X8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3X8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,676
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QAIM3X8.2/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified precision micropower shunt voltage reference in SOT-23 package, delivering a stable 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) for high-accuracy analog signal conditioning in automotive and industrial systems.
For engineers reviewing the LM4050QAIM3X8.2/NOPB datasheet, LM4050QAIM3X8.2/NOPB pinout, LM4050QAIM3X8.2/NOPB application, or LM4050QAIM3X8.2/NOPB equivalent, key selection criteria include its automotive qualification, no-output-capacitor-required operation, capacitive-load tolerance, 74–100 μA minimum operating current across temperature, and fixed 8.192 V output optimized for 16-bit DAC/ADC reference and precision sensor excitation.
Technical Context
The LM4050QAIM3X8.2/NOPB uses bandgap-based Zener-zap trimmed shunt topology with curvature-corrected temperature drift compensation, enabling stable 8.192 V regulation over −40°C to +125°C without external capacitors. Its dynamic impedance remains ≤0.6 Ω at 1 mA, supporting low-noise, high-PSRR analog front-ends.
It operates as a two-terminal device: cathode accepts input current and sets reference voltage via shunt regulation; anode connects to system ground. The NC pin (Pin 3) is unconnected and must be left floating or tied to anode-no internal function.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - precise value enables direct use with 16-bit converters requiring 8.192 V full-scale reference. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - ensures <±8.2 mV absolute error before calibration, critical for factory-trimmed instrumentation. |
| Temp Coefficient | ≤50 ppm/°C (max, −40°C to +125°C) - contributes <±4.1 mV drift over full range, meeting automotive ASIL-B sensor reference stability. |
| Min Operating Current | 74 μA (25°C), up to 100 μA (−40°C to +125°C) - defines lowest bias current for stable regulation in ultra-low-power wake-up circuits. |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz) - limits added noise in precision measurement paths; lower than standard Zeners by >2×. |
| Dynamic Impedance | 0.6 Ω at 1 mA - maintains <0.6 mV output shift per 1 mA load change, essential for stable biasing of op-amp gain stages. |
| Long-Term Stability | 120 ppm (1000 hrs @ 25°C) - corresponds to ~1 ppm/day aging rate, suitable for systems requiring recalibration intervals >1 year. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with gull-wing leads. Thermal resistance RθJA = 287°C/W (board mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current input node - regulates voltage by sinking excess current; connects to supply rail through series resistor (Rs) and to load/reference node. |
| Anode (Pin 2) | O | Reference ground return - must be connected directly to system ground plane to minimize IR drop and ensure accuracy. |
| NC (Pin 3) | - | No internal connection - electrically isolated; leave floating or tie to Pin 2 (anode); no routing or trace required. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with zero external capacitance - eliminates BOM cost, board area, and ESR-related instability risks in space-constrained modules. |
| Tolerates capacitive loads | Remains stable with any load capacitance (0–∞) - supports direct buffering into ADC sample-and-hold or op-amp inputs without phase-margin analysis. |
| AEC-Q100 Grade 1 qualified | Rated for −40°C to +125°C ambient operation with full electrical specs guaranteed - meets automotive powertrain and chassis module reliability requirements. |
| Low micropower operation | 74–100 μA minimum current enables <1 mW total dissipation at 8.192 V - ideal for always-on battery-backed subsystems. |
| Fuse/Zener-zap voltage trim | Wafer-sort trimming achieves ±0.1% initial accuracy without post-package adjustment - ensures high yield and consistent performance across lots. |
Applications
| Automotive Sensor Reference | Precision Data Acquisition |
|---|---|
Use Scenario: Providing excitation and reference voltage for MEMS pressure sensors in engine control units. IC Role / Device Role / Timing Role: Shunt reference establishing stable 8.192 V rail for ratiometric bridge sensing and 16-bit SAR ADC conversion. Use Value: Enables <±0.02% total measurement error over temperature, satisfying ASIL-B functional safety requirements for closed-loop fuel control. |
Use Scenario: High-resolution voltage reference in portable handheld multimeters and calibration standards. IC Role / Device Role / Timing Role: Primary reference source for dual-slope and sigma-delta ADCs requiring low drift and low noise. Use Value: Delivers 150 μVrms noise and 50 ppm/°C TC, allowing 6½-digit resolution without ovenized references or complex filtering. |
| Industrial Process Transmitter | Energy Meter Reference |
Use Scenario: 4–20 mA loop-powered transmitter with integrated analog front-end for temperature and flow sensing. IC Role / Device Role / Timing Role: Precision shunt reference powering signal conditioning circuitry and setting DAC output scale. Use Value: Maintains <±0.1% accuracy over 10-year field life (120 ppm long-term drift), reducing need for on-site recalibration. |
Use Scenario: Reference for metrology-grade polyphase energy meters compliant with IEC 62053-21 Class 0.2. IC Role / Device Role / Timing Role: Stable 8.192 V reference for anti-aliasing filters and high-speed ADC sampling clocks. Use Value: Supports <0.1% energy measurement accuracy under varying line voltage and temperature, meeting utility-grade billing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040QAIM3X8.2/NOPB | Higher 100 ppm/°C max TC; 100 μVrms noise; non-AEC-Q100; 60–80 μA min current | Lacks automotive qualification; wider temp drift limits use in non-safety-critical consumer or industrial controls | Select when cost sensitivity outweighs automotive compliance and tighter drift specs. |
| ADR3482ARMZ | Series topology; 3.3 V supply required; 3 ppm/°C TC; 12 μVrms noise; SOIC-8 package | Requires external supply and decoupling; superior noise/TC but larger footprint and higher quiescent current (120 μA) | Choose for ultra-low-noise lab equipment where board space and supply availability permit. |
Compared with LM4040QAIM3X8.2/NOPB, the LM4050QAIM3X8.2/NOPB delivers tighter temperature stability and automotive qualification at identical pinout and footprint; versus ADR3482ARMZ, it offers simpler two-terminal operation and lower system-level BOM count despite higher noise.
Availability
LM4050QAIM3X8.2/NOPB is available at Aetrix Electronics and suitable for automotive sensor modules, precision data loggers, industrial transmitters, and energy metering systems requiring stable component supply with full AEC-Q100 traceability and extended temperature support.
Supply support for LM4050QAIM3X8.2/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 product development.
The LM4050-N/-Q1 product line delivers micropower shunt references optimized for space-constrained, high-reliability applications including automotive powertrain, ADAS sensors, and industrial process control where zero-capacitor stability and AEC-Q100 compliance are mandatory.
FAQ
What is the operating temperature range for the LM4050QAIM3X8.2/NOPB?
The LM4050QAIM3X8.2/NOPB is rated for −40°C to +125°C ambient temperature and is AEC-Q100 Grade 1 qualified. All electrical specifications-including 8.192 V output, ±0.1% initial tolerance, and ≤50 ppm/°C temperature coefficient-are guaranteed across this full range, making it suitable for under-hood automotive and harsh industrial environments.
Does the LM4050QAIM3X8.2/NOPB require an external output capacitor?
No, the LM4050QAIM3X8.2/NOPB does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including zero capacitance. This eliminates layout constraints and reduces bill-of-materials cost while maintaining regulation integrity in compact PCB designs.
What is the minimum cathode current needed for regulation in the LM4050QAIM3X8.2/NOPB?
The LM4050QAIM3X8.2/NOPB requires a minimum cathode current of 74 μA at 25°C and up to 100 μA across the full −40°C to +125°C operating range. Below this threshold, the device exits regulation and output voltage collapses. Designers must size the series resistor (Rs) to ensure this current is maintained under worst-case supply and load conditions.
How does the LM4050QAIM3X8.2/NOPB differ from the standard LM4050AIM3X8.2/NOPB?
The LM4050QAIM3X8.2/NOPB is the automotive-qualified variant of the LM4050AIM3X8.2/NOPB, featuring AEC-Q100 Grade 1 certification, enhanced screening, and guaranteed performance over −40°C to +125°C. Both share identical electrical specs, SOT-23 package, and pinout-but only the 'Q' version is approved for automotive safety-critical applications.
Can the NC pin (Pin 3) of the LM4050QAIM3X8.2/NOPB be used for thermal relief or grounding?
No-Pin 3 is internally unconnected (NC) and has no electrical function. It must be left floating or tied to Pin 2 (anode) per TI's datasheet guidance. Using it for thermal relief or grounding introduces no benefit and may risk mechanical stress or solder wicking that compromises package integrity; thermal performance is governed solely by the anode pad and PCB copper area.
LM4050QAIM3X8.2/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
LM4050QAIM3X8.2/NOPB FAQ
1.How can I place an order for LM4050QAIM3X8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3X8.2/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 LM4050QAIM3X8.2/NOPB reliable?
The price and inventory of LM4050QAIM3X8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3X8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3X8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3X8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3X8.2/NOPB?
LM4050QAIM3X8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3X8.2/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 LM4050QAIM3X8.2/NOPB?
For technical support, including LM4050QAIM3X8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3X8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3X8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3X8.2/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 LM4050QAIM3X8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3X8.2/NOPB?
All LM4050QAIM3X8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3X8.2/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 LM4050QAIM3X8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3X8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QAIM3X8.2/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…
