My Inquiry
My Account
Texas Instruments LM4050QAIM3-4.1/NOPB
- Part No.:
- LM4050QAIM3-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,396
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QAIM3-4.1/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 4.096 V reverse breakdown voltage with ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 68 μA to 15 mA over −40°C to 125°C and requires no output capacitor while tolerating capacitive loads - enabling stable use in automotive sensor signal conditioning and high-resolution ADC reference circuits.
For engineers reviewing the LM4050QAIM3-4.1/NOPB datasheet, LM4050QAIM3-4.1/NOPB pinout, LM4050QAIM3-4.1/NOPB application, or LM4050QAIM3-4.1/NOPB equivalent, this device serves as a space-constrained, low-drift, automotive-grade shunt reference for 12-bit data converters, battery-powered instrumentation, and precision analog front-ends where thermal hysteresis ≤1.148 mV and dynamic impedance ≤0.5 Ω are critical.
Technical Context
The LM4050QAIM3-4.1/NOPB implements a curvature-corrected bandgap architecture with Zener-zap trim at wafer sort to achieve ±0.1% accuracy at 25°C. Its internal compensation eliminates external stabilization capacitors while maintaining stability across all capacitive loads.
It functions strictly as a two-terminal shunt regulator: cathode regulates against anode (ground), with current-sourced operation requiring an external series resistor (RS). Minimum operating current is 68 μA (typ) at 25°C and 73 μA (max) over industrial range, rising to 78 μA over extended −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - enables exact 1 mV/LSB scaling for 12-bit ADCs powered from 5 V supplies. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - supports high-accuracy calibration without post-manufacture trimming. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C - ensures <±0.21 mV drift across full automotive temperature range. |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - limits quantization error in precision measurement systems. |
| Dynamic Impedance | 0.5 Ω at 1 mA, 120 Hz - maintains regulation stability under fast load transients. |
| Operating Current | 68 μA to 15 mA - supports ultra-low-power sensor nodes and higher-current reference buffering. |
| Thermal Hysteresis | 1.148 mV after −40°C ↔ 125°C cycling - defines repeatability error in systems undergoing repeated thermal stress. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration. Pin 3 is internally unconnected (NC) and must be left floating or tied to pin 2 per TI layout guidance for EMI-sensitive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to supply rail via series resistor RS; voltage develops between this pin and anode (pin 2). |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; serves as the 0 V reference point for VOUT. |
| NC (Pin 3) | No internal connection | Leave unconnected or tie to pin 2 to reduce EMI susceptibility near transformers or switching noise sources. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from −40°C to 125°C ambient with zero derating. |
| No output capacitor required | Internally compensated design eliminates need for external bypass, reducing BOM count and PCB area. |
| Tolerates capacitive loads | Stable with any value of output capacitance - simplifies filtering in noisy environments without risk of oscillation. |
| Low micropower operation | 68 μA minimum cathode current enables >10-year battery life in always-on sensor nodes. |
| Precision 4.096 V option | Matches standard 12-bit full-scale ranges (e.g., 5 V / 4096 = 1.22 mV/LSB → 4.096 V yields exactly 1 mV/LSB). |
Applications
| Battery-Powered Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Portable multimeter or handheld data logger operating from coin-cell or Li-ion battery with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 4.096 V reference for ADC conversion and internal DAC calibration. Use Value: Enables 1 mV/LSB resolution without trimming; 93 μVrms noise avoids adding quantization uncertainty; 68 μA quiescent current extends battery life beyond 5 years. |
Use Scenario: Engine control unit (ECU) measuring throttle position, coolant temperature, and oxygen sensor outputs. IC Role / Device Role / Timing Role: Precision shunt reference for analog front-end amplifiers and ADCs in ASIL-B compliant subsystems. Use Value: AEC-Q100 Grade 1 rating ensures reliability across −40°C to 125°C; 50 ppm/°C tempco holds reference error below ±0.21 mV; thermal hysteresis ≤1.148 mV guarantees repeatable cold-start readings. |
| Industrial Process Monitoring | Energy Metering Reference |
|
Use Scenario: Loop-powered 4–20 mA transmitter with local 12-bit ADC for pressure or flow sensing. IC Role / Device Role / Timing Role: Two-terminal shunt reference regulating excitation voltage for bridge sensors and setting ADC full-scale. Use Value: Stable 4.096 V output allows direct mapping to 12-bit codes; 0.5 Ω dynamic impedance prevents gain shift during sensor excitation transients. |
Use Scenario: Class 0.2 smart electricity meter using isolated sigma-delta ADC for voltage/current channel measurement. IC Role / Device Role / Timing Role: Primary voltage reference for metrology ADC, referenced to system ground with minimal drift. Use Value: Long-term stability of 120 ppm over 1000 hrs ensures calibration retention across 10+ year field life; low noise preserves ENOB in high-resolution sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V, ±0.5% initial tolerance (C grade), 100 ppm/°C max tempco, non-automotive qualified. | Lower accuracy and wider tempco; suitable for cost-sensitive industrial designs without AEC-Q100 requirement. | Select when automotive qualification and ±0.1% tolerance are not required; offers lower unit cost but reduced long-term stability. |
| MAX6008AEUR+T | 4.096 V, ±0.2% initial tolerance, 75 ppm/°C max tempco, SOT-23-3, no AEC-Q100 qualification. | Higher tempco and looser tolerance than LM4050QAIM3-4.1/NOPB; lacks automotive validation. | Choose for non-automotive applications needing slightly better accuracy than TL4050 but lower cost than LM4050-Q1. |
Compared with TL4050C41IDBZR and MAX6008AEUR+T, the LM4050QAIM3-4.1/NOPB delivers tighter initial tolerance (±0.1% vs ±0.5%/±0.2%), lower tempco (50 vs 100/75 ppm/°C), and AEC-Q100 Grade 1 compliance - making it the only viable choice for safety-critical automotive reference designs demanding guaranteed performance across full temperature range.
Availability
LM4050QAIM3-4.1/NOPB is available at Aetrix Electronics and suitable for automotive electronics, precision data acquisition, and industrial process monitoring requiring stable component supply with full traceability and long-lifecycle support.
Supply support for LM4050QAIM3-4.1/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-qualified components.
The LM4050-N/-Q1 product line delivers micropower shunt references optimized for space-constrained, high-accuracy applications including automotive sensors, portable instrumentation, and energy metering - emphasizing low drift, low noise, and robust qualification.
FAQ
What is the maximum operating current for LM4050QAIM3-4.1/NOPB?
The LM4050QAIM3-4.1/NOPB supports a maximum operating current of 15 mA. Exceeding this limit risks exceeding the 280 mW power dissipation rating at 25°C ambient and may cause thermal shutdown or permanent damage. Derating is required above 25°C using RθJA = 287°C/W.
Does LM4050QAIM3-4.1/NOPB require an external output capacitor?
No - the LM4050QAIM3-4.1/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load, though a ceramic bypass capacitor may be added for additional high-frequency noise suppression if needed.
What is the thermal hysteresis specification for LM4050QAIM3-4.1/NOPB?
The LM4050QAIM3-4.1/NOPB has a thermal hysteresis of 1.148 mV, measured as the voltage shift at 25°C after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced drift in the package and impacts repeatability in systems with wide thermal excursions.
Is LM4050QAIM3-4.1/NOPB pin-compatible with other LM4050 variants?
Yes - all LM4050-N and LM4050-N-Q1 variants in SOT-23 (DBZ) package share identical pinout (cathode/anode/NC), footprint, and solder profile. The LM4050QAIM3-4.1/NOPB is mechanically and electrically interchangeable with other SOT-23 versions of the LM4050 family, provided voltage and grade requirements match.
What is the minimum cathode current required for regulation in LM4050QAIM3-4.1/NOPB?
The LM4050QAIM3-4.1/NOPB requires a minimum cathode current of 68 μA (typical) at 25°C and up to 78 μA across the full −40°C to 125°C range to maintain regulation. Below this threshold, the device exits regulation and output voltage collapses.
LM4050QAIM3-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAIM3-4.1/NOPB FAQ
1.How can I place an order for LM4050QAIM3-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3-4.1/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 LM4050QAIM3-4.1/NOPB reliable?
The price and inventory of LM4050QAIM3-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3-4.1/NOPB?
LM4050QAIM3-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3-4.1/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 LM4050QAIM3-4.1/NOPB?
For technical support, including LM4050QAIM3-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3-4.1/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3-4.1/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 LM4050QAIM3-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3-4.1/NOPB?
All LM4050QAIM3-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3-4.1/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 LM4050QAIM3-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QAIM3-4.1/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…
