My Inquiry
My Account
Texas Instruments LM4050QBIM3-4.1/NOPB
- Part No.:
- LM4050QBIM3-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:872
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QBIM3-4.1/NOPB from Texas Instruments is a 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-enabling stable regulation in battery-powered data acquisition and 12-bit ADC reference applications.
For engineers reviewing the LM4050QBIM3-4.1/NOPB datasheet, LM4050QBIM3-4.1/NOPB pinout, LM4050QBIM3-4.1/NOPB application, or LM4050QBIM3-4.1/NOPB equivalent, key selection criteria include its 4.096 V output (ideal for 1 mV/LSB 12-bit converters), automotive-grade AEC-Q100 qualification, low 68 μA minimum operating current, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4050QBIM3-4.1/NOPB implements a curvature-corrected bandgap shunt architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy at 25°C. Its internal compensation eliminates external capacitor dependency 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 0.5 Ω at 1 mA and thermal hysteresis of 1.148 mV after −40°C/125°C cycling. The Q1 suffix confirms AEC-Q100 Grade 1 qualification for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - enables exact 1 mV LSB resolution for 12-bit ADCs/DACs powered from 5 V rails. |
| Initial Tolerance | ±0.1% at 25°C (A-grade) - ensures ≤ ±4.1 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤ 50 ppm/°C over −40°C to 125°C - contributes ≤ ±20.5 mV drift across full range, critical for precision instrumentation. |
| Min Operating Current | 68 μA typical at 25°C - supports ultra-low-power operation in energy-harvesting or coin-cell systems. |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - limits added noise in high-resolution analog front-ends without requiring post-filtering. |
| Dynamic Impedance | 0.5 Ω at 1 mA - minimizes load-induced voltage shift (< 0.5 mV per 1 mA load change), improving regulation under varying conditions. |
| Long-Term Stability | 120 ppm after 1000 hours - corresponds to ~0.5 mV drift over 6 weeks, supporting reliable calibration intervals. |
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 / regulated voltage node | Connects to supply rail via series resistor; voltage develops between this pin and anode - defines reference output point. |
| Anode (Pin 2) | Ground reference / common return | Must be tied to system ground; serves as the 0 V reference for cathode voltage - all specifications referenced to this node. |
| NC (Pin 3) | No internal connection | Electrically isolated; leave floating or tie to Pin 2 in high-EMI environments to reduce noise coupling into the reference path. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for stability with any capacitive load - eliminates BOM cost, layout area, and startup delay from external C. |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to 125°C) and reliability stress tests - suitable for ADAS sensor modules and powertrain ECUs. |
| Fixed 4.096 V output | Matches standard 12-bit full-scale range (0–4.096 V = 0–4095 counts) - removes need for trimming resistors and simplifies ADC/DAC interface design. |
| Low 68 μA min operating current | Enables operation from micro-power sources like energy harvesters or backup batteries - extends functional uptime in always-on monitoring systems. |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance - supports direct buffering with op-amps or driving SAR ADC sample capacitors without oscillation risk. |
Applications
| Battery-Powered Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Portable environmental monitor logging temperature, humidity, and gas concentration using 12-bit ADCs powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC conversion - directly sets full-scale range and LSB value. Use Value: Enables 1 mV/LSB resolution without external trimming; 68 μA min current allows >1-year runtime on single coin cell at 1-sample/sec duty cycle. |
Use Scenario: Pressure transducer signal conditioning in engine manifold sensor module operating across −40°C to 125°C ambient. IC Role / Device Role / Timing Role: Supplies precision reference to instrumentation amplifier and ADC - maintains measurement accuracy despite thermal cycling. Use Value: AEC-Q100 Grade 1 rating and ≤50 ppm/°C tempco ensure <±0.02% FS error over full automotive temperature range. |
| Industrial Process Controller Analog Input | Precision Audio Level Detection |
Use Scenario: 4–20 mA loop-powered PLC analog input card measuring flow rate with 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Acts as shunt reference for ratiometric current-to-voltage conversion - defines gain and offset stability. Use Value: 93 μVrms noise floor avoids degrading ENOB below 15.5 bits; 0.5 Ω dynamic impedance prevents gain drift during field transmitter load variations. |
Use Scenario: LED VU meter driver in studio audio interface detecting RMS signal level with logarithmic scaling. IC Role / Device Role / Timing Role: Sets accurate threshold voltages for multi-stage comparator ladder - determines LED activation points. Use Value: ±0.1% initial tolerance ensures consistent channel-to-channel level matching across stereo paths without manual calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF43G01IDBVR | Series reference (not shunt); 4.096 V, ±0.05% initial accuracy, higher 1.2 mA quiescent current. | Requires dedicated supply rail; unsuitable for simple shunt configurations with shared ground or high-side sensing. | Select when lowest initial error is critical and board space allows extra decoupling; avoid if minimizing supply current or simplifying topology is priority. |
| ADR3440ARJZ-R7 | Series reference; 4.096 V, ±0.1% initial accuracy, 125 μA quiescent current, 10 ppm/°C tempco. | Needs external bypass cap; incompatible with shunt-based current-source topologies used in 4–20 mA receivers. | Prefer for low-noise, low-drift applications where supply headroom permits series architecture - not drop-in for LM4050QBIM3-4.1/NOPB's two-terminal use cases. |
Compared with REF43G01IDBVR and ADR3440ARJZ-R7, the LM4050QBIM3-4.1/NOPB uniquely combines true two-terminal shunt operation, ultra-low 68 μA minimum current, and AEC-Q100 qualification - making it the only viable choice for automotive-grade, space-constrained, or battery-operated shunt reference designs requiring 4.096 V.
Availability
LM4050QBIM3-4.1/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor modules, industrial process controllers, and precision audio level detection requiring stable component supply across extended temperature ranges.
Supply support for LM4050QBIM3-4.1/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 leader focused on analog and embedded processing technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4050-N/Q1 product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications including automotive sensors, portable test equipment, and industrial control systems.
FAQ
What is the maximum operating current for LM4050QBIM3-4.1/NOPB?
The LM4050QBIM3-4.1/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 per the RθJA = 287°C/W thermal resistance.
Does LM4050QBIM3-4.1/NOPB require an external capacitor for stability?
No, the LM4050QBIM3-4.1/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load up to at least 10 nF - a key advantage over older shunt references that mandate specific capacitor values and ESR ranges.
What does the 'Q1' suffix indicate in LM4050QBIM3-4.1/NOPB?
The 'Q1' suffix denotes AEC-Q100 Grade 1 qualification, confirming the LM4050QBIM3-4.1/NOPB has passed automotive reliability stress tests and operates across −40°C to 125°C junction temperature. This makes it suitable for under-hood and cabin electronics where industrial-grade parts would fail qualification.
How does the 4.096 V output of LM4050QBIM3-4.1/NOPB benefit ADC applications?
The 4.096 V output of LM4050QBIM3-4.1/NOPB aligns exactly with 212 = 4096 steps for 12-bit ADCs - yielding precisely 1 mV per LSB. This eliminates scaling errors and simplifies firmware math, especially in battery-powered data loggers and portable multimeters where resolution and calibration simplicity are critical.
What is the function of Pin 3 (NC) on LM4050QBIM3-4.1/NOPB?
Pin 3 is a no-connect terminal with no internal bond wire. TI recommends leaving it floating in standard applications; however, in high-EMI environments (e.g., near switching regulators or motors), it should be tied to Pin 2 (Anode) to reduce noise coupling into the reference path via the parasitic Schottky diode between Pins 2 and 3.
LM4050QBIM3-4.1/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:
- ±0.2%
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBIM3-4.1/NOPB FAQ
1.How can I place an order for LM4050QBIM3-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-4.1/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 LM4050QBIM3-4.1/NOPB reliable?
The price and inventory of LM4050QBIM3-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-4.1/NOPB?
LM4050QBIM3-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-4.1/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 LM4050QBIM3-4.1/NOPB?
For technical support, including LM4050QBIM3-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-4.1/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-4.1/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 LM4050QBIM3-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-4.1/NOPB?
All LM4050QBIM3-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-4.1/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 LM4050QBIM3-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QBIM3-4.1/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…
