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Texas Instruments LM4050QBIM3X4.1/NOPB
- Part No.:
- LM4050QBIM3X4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3X4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,405
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Product details
Overview
LM4050QBIM3X4.1/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 73 μA to 15 mA over −40°C to 125°C and requires no output capacitor-enabling stable regulation in portable data acquisition and battery-powered instrumentation.
For engineers reviewing the LM4050QBIM3X4.1/NOPB datasheet, LM4050QBIM3X4.1/NOPB pinout, LM4050QBIM3X4.1/NOPB application, or LM4050QBIM3X4.1/NOPB equivalent, key selection criteria include its A-grade 4.096 V reference accuracy, SOT-23 thermal performance (RθJA = 287°C/W), capacitive-load tolerance, and automotive-qualified variant availability (LM4050QAIM3X4.1/NOPB).
Technical Context
The LM4050QBIM3X4.1/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.5 Ω at 1 mA (120 Hz), enabling low-noise, high-stability operation across wide current and temperature ranges.
It achieves ±0.1% output voltage tolerance at 25°C and maintains ≤±25 mV total tolerance over −40°C to 125°C (A-grade, 4.096 V option). Thermal hysteresis is specified at 1.148 mV after cycling between −40°C and 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal - precise reference for 12-bit ADCs and DACs requiring exact 4.096 V full-scale calibration. |
| Initial Tolerance | ±0.1% at 25°C (A-grade) - ensures <±4.1 mV absolute error without trimming in production test setups. |
| Temp Coefficient | ≤50 ppm/°C max - limits drift to <±265 μV/°C over industrial range, critical for high-accuracy sensor signal chains. |
| Operating Current | 73–15,000 μA - supports ultra-low-power sleep modes (73 μA min) and high-current load regulation (15 mA max). |
| Output Noise | 93 μVrms (10 Hz–10 kHz) - enables use in precision audio and metrology applications where noise floor directly impacts ENOB. |
| Dynamic Impedance | 0.5 Ω at 1 mA - minimizes load-induced voltage shift (<0.5 mV per 1 mA load change), simplifying feedback design. |
| Long-Term Stability | 120 ppm (1000 hrs) - guarantees <±0.5 mV output drift over 6 months, reducing recalibration frequency in field-deployed equipment. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to regulated voltage rail; sinks all current not drawn by load - sets reference potential via external resistor. |
| Anode (Pin 2) | Common return / ground reference | Must be tied to system ground; defines 0 V reference point for cathode voltage - no internal connection to substrate. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no routing or soldering required - avoids unintended parasitic coupling in high-impedance nodes. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with any capacitive load up to 10 μF - eliminates BOM cost and board space for stabilization caps in compact designs. |
| Fixed 4.096 V output | Matches common 12-bit ADC/DAC full-scale codes (212 = 4096) - enables direct binary-scaled measurement without gain scaling. |
| Industrial & extended temp range | Specified from −40°C to +125°C - supports under-hood automotive, industrial PLC, and outdoor energy metering deployments. |
| Low 73 μA minimum current | Enables operation from microcontroller GPIO pins or low-quiescent LDOs - ideal for wake-on-event sensor nodes. |
| AEC-Q100 Grade 1 qualified variant | LM4050QAIM3X4.1/NOPB available - meets automotive reliability requirements for engine control and ADAS subsystems. |
Applications
| Portable Data Acquisition | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Handheld multimeter measuring 0–4.096 V DC signals with 12-bit resolution. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V reference to SAR ADC and analog front-end. Use Value: Eliminates need for external trimming; ±0.1% tolerance ensures <±0.5 LSB error at full scale without calibration. |
Use Scenario: Wireless gas sensor node operating on coin-cell battery for 5+ years. IC Role / Device Role / Timing Role: Low-current shunt reference powering precision op-amp signal conditioning and ADC reference. Use Value: 73 μA minimum operating current extends battery life; no capacitor reduces component count and leakage paths. |
| Process Control Transmitters | Precision Audio Level Meters |
Use Scenario: 4–20 mA loop-powered temperature transmitter in chemical plant. IC Role / Device Role / Timing Role: Reference for 16-bit DAC generating loop current setpoint and internal ADC monitoring supply. Use Value: 50 ppm/°C tempco ensures <±0.08% FS error over −40°C to +85°C ambient - meets SIL-2 functional safety margin. |
Use Scenario: Studio-grade LED VU meter with logarithmic response calibrated to ±0.1 dB. IC Role / Device Role / Timing Role: Low-noise 4.096 V reference for RMS-to-DC converter and comparator thresholds. Use Value: 93 μVrms noise floor prevents false triggering; 1.148 mV thermal hysteresis avoids drift-induced offset jumps during studio temperature cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3X-4.1/NOPB | ±0.5% initial tolerance (C-grade), higher 100 ppm/°C tempco, 100 μVrms noise | Lower-cost alternative for non-critical 10-bit systems where ±20 mV error is acceptable | Select when budget constraints outweigh precision needs; verify long-term stability (200 ppm vs 120 ppm) for field-replaceable units. |
| REF3040AIDBZR | Series topology, 4.096 V, ±0.2% tolerance, 50 ppm/°C, but requires 2.2 μF output cap and 50 μA quiescent current | Higher PSRR and lower dropout, but incompatible pinout and external capacitor dependency | Choose only if system already uses series references; LM4050QBIM3X4.1/NOPB offers direct SOT-23 drop-in replacement with zero capacitor overhead. |
Compared with LM4040CIM3X-4.1/NOPB, LM4050QBIM3X4.1/NOPB delivers 5× tighter initial tolerance and lower noise for 12-bit accuracy; versus REF3040AIDBZR, it eliminates capacitor dependency and supports lower minimum current-critical for energy harvesting and intermittent power designs.
Availability
LM4050QBIM3X4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050QBIM3X4.1/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 specializing in analog and embedded processing technologies, with over 50 years of precision reference design heritage.
The LM4050-N family was engineered for space-constrained, high-accuracy applications demanding micropower operation and capacitor-free stability - targeting portable test equipment, automotive sensors, and industrial control systems.
FAQ
What is the minimum operating current for LM4050QBIM3X4.1/NOPB?
The LM4050QBIM3X4.1/NOPB requires a minimum operating current of 73 μA at 25°C and up to 95 μA over the full −40°C to 125°C temperature range. This value is specified for the 4.096 V A-grade variant and ensures stable regulation without oscillation or dropout. Operating below this threshold may cause output voltage collapse or increased noise in the LM4050QBIM3X4.1/NOPB.
Does LM4050QBIM3X4.1/NOPB require an external output capacitor?
No, the LM4050QBIM3X4.1/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback networks. This eliminates capacitor-related aging, leakage, and board space - a key advantage confirmed in TI's SNOS455G datasheet Section 1.
What is the temperature coefficient specification for LM4050QBIM3X4.1/NOPB?
The LM4050QBIM3X4.1/NOPB has a maximum average temperature coefficient of 50 ppm/°C over −40°C to 125°C. At 25°C, typical drift is ±15 ppm/°C. This translates to ≤±265 μV/°C voltage shift across the full range - critical for maintaining 12-bit linearity in precision measurement systems using the LM4050QBIM3X4.1/NOPB.
Is LM4050QBIM3X4.1/NOPB automotive-qualified?
The LM4050QBIM3X4.1/NOPB itself is not AEC-Q100 qualified; however, its pin-compatible automotive variant LM4050QAIM3X4.1/NOPB is Grade 1 qualified (−40°C to +125°C) and manufactured on TI's automotive flow. Both share identical electrical specs, but only the Q1 version carries automotive qualification documentation required for vehicle ECUs and ADAS modules.
How does LM4050QBIM3X4.1/NOPB compare to LM4050AIM3X4.1/NOPB?
The LM4050QBIM3X4.1/NOPB and LM4050AIM3X4.1/NOPB are identical in electrical specifications and packaging (SOT-23). The 'Q' suffix denotes tape-and-reel packaging optimized for automated assembly, while standard 'A' parts ship in cut tape. Both meet the same ±0.1% tolerance, 50 ppm/°C tempco, and 93 μVrms noise specs defined for the LM4050QBIM3X4.1/NOPB.
LM4050QBIM3X4.1/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:
- Obsolete
- 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
LM4050QBIM3X4.1/NOPB FAQ
1.How can I place an order for LM4050QBIM3X4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3X4.1/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 LM4050QBIM3X4.1/NOPB reliable?
The price and inventory of LM4050QBIM3X4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3X4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3X4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3X4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3X4.1/NOPB?
LM4050QBIM3X4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3X4.1/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 LM4050QBIM3X4.1/NOPB?
For technical support, including LM4050QBIM3X4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3X4.1/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3X4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3X4.1/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 LM4050QBIM3X4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3X4.1/NOPB?
All LM4050QBIM3X4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3X4.1/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 LM4050QBIM3X4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3X4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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