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Texas Instruments LM4041BIM7X-1.2/NOPB
- Part No.:
- LM4041BIM7X-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041BIM7X-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
LM4041BIM7X-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23-3 package, rated for industrial temperature range (−40°C to +85°C), with ±0.2% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It operates from 60 μA to 12 mA, requires no output capacitor, and stabilizes under capacitive loads - ideal for high-accuracy ADC biasing in portable instrumentation.
For engineers reviewing the LM4041BIM7X-1.2/NOPB datasheet, LM4041BIM7X-1.2/NOPB pinout, LM4041BIM7X-1.2/NOPB application, or LM4041BIM7X-1.2/NOPB equivalent, key selection criteria include reverse breakdown voltage accuracy over temperature, low quiescent current capability, dynamic impedance under varying load, thermal hysteresis performance, and compatibility with space-constrained PCB layouts using SOT-23 footprint.
Technical Context
The LM4041BIM7X-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation. Its Zener-zap and fuse trimming during wafer sort ensures ±0.2% initial accuracy (B-grade) at 25°C, and its low dynamic impedance (≤1.5 Ω at 1 mA) maintains stable regulation across operating current (60 μA–12 mA) and temperature (−40°C to +85°C).
It features a fixed 1.225 V reverse breakdown voltage, no feedback pin (non-adjustable variant), and is qualified per AEC-Q100 Grade 3 for automotive use. The device tolerates capacitive loads without oscillation and exhibits 0.08% thermal hysteresis after −40°C/+125°C cycling - critical for repeatable calibration in field-deployed equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets precise bias point for analog front-ends and ADC references |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - translates to ±2.4 mV absolute error, enabling sub-12-bit system accuracy without trimming |
| Temp Coefficient | ≤100 ppm/°C - contributes ≤±8.5 mV drift over −40°C to +85°C, supporting stable operation in uncontrolled environments |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensor nodes and high-current DAC buffers with single-part flexibility |
| Noise (10 Hz–10 kHz) | 20 μVRMS - adds <0.005 LSB noise to 16-bit 2.5 V full-scale ADCs, preserving effective resolution |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - minimizes output voltage shift under load transients, improving regulation in dynamic systems |
| Thermal Hysteresis | 0.08% - ensures <1 mV repeatability after thermal cycling, essential for metrology-grade calibration stability |
Pinout & Package
SOT-23-3 package (DBZ), 1.30 mm × 2.92 mm body size, with gull-wing leads. Pin 1 = Cathode (I/O), Pin 2 = Anode (O, normally grounded), Pin 3 = NC (no connect, must float or tie to anode per EMI guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Shunt current path and output node | Connects to regulated voltage rail; sinks current to maintain 1.225 V across external resistor network |
| 2 (Anode) | Reference ground reference | Typically tied to system ground; defines return path for shunt current and establishes cathode voltage |
| 3 (NC) | No-connect terminal | Must remain unconnected or tied to Pin 2 (anode); not internally bonded - floating improves EMI immunity |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact, low-BOM-count designs without stability-compensation components |
| Tolerates capacitive loads | Eliminates need for isolation resistors when driving ADC input caps or op-amp inputs, simplifying layout |
| Low 60 μA minimum operating current | Supports battery-powered applications with multi-year runtime, such as wireless sensor transmitters |
| 100 ppm/°C max tempco | Reduces calibration frequency in industrial controllers operating across wide ambient ranges |
| AEC-Q100 Grade 3 qualified | Validated for automotive subsystems including body electronics and infotainment power rails |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Precision voltage reference for 12–16-bit SAR ADCs in handheld multimeters and portable gas analyzers. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference to ADC internal buffer and external signal conditioning stages. Use Value: Enables <±0.5 LSB total unadjusted error over temperature, meeting IEC 61000-4-30 Class A metering requirements. | Use Scenario: Reference source for isolated analog input modules in PLC backplanes and distributed I/O systems. IC Role / Device Role / Timing Role: Primary voltage reference for sigma-delta ADCs sampling thermocouple and RTD signals at 10–100 SPS. Use Value: Delivers <10 ppm/°C effective drift contribution to overall system gain error, reducing factory recalibration intervals by 3×. |
| Process Control | Automotive Electronics |
Use Scenario: Biasing reference for 4–20 mA transmitter ICs in hazardous-area pressure and flow transmitters. IC Role / Device Role / Timing Role: Shunt reference setting loop current scaling factor and zero-point offset in HART-enabled transmitters. Use Value: Maintains <±0.1% full-scale accuracy over −40°C to +85°C ambient, satisfying SIL-2 functional safety margin requirements. | Use Scenario: Reference for engine control unit (ECU) sensor signal conditioning circuits monitoring throttle position and coolant temperature. IC Role / Device Role / Timing Role: Stable 1.225 V reference for ratiometric ADCs measuring potentiometer and NTC outputs in AEC-Q100-compliant ECUs. Use Value: Provides guaranteed ±0.2% initial accuracy and <0.08% thermal hysteresis - critical for closed-loop fuel injection timing consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3-1.2/NOPB | Same 1.225 V, ±0.2% tolerance, SOT-23-3, but higher 150 ppm/°C max tempco and 35 μVRMS noise | Lacks AEC-Q100 qualification; not rated for automotive Grade 3 temperature range | Choose for cost-sensitive industrial designs where extended tempco and noise are acceptable |
| REF3012AIDBZR | 1.2 V output, ±0.2% tolerance, 50 ppm/°C max tempco, 25 μVRMS noise, but requires 100 μA min current and has 2.5 V max supply headroom | Series topology - needs higher input voltage margin; not a drop-in shunt replacement | Prefer when lower tempco is mandatory and system allows series-reference topology and higher supply overhead |
Compared with LM4040BIM3-1.2/NOPB, LM4041BIM7X-1.2/NOPB offers tighter tempco and lower noise for metrology-grade accuracy; versus REF3012AIDBZR, it enables true shunt operation with no minimum headroom - critical for low-voltage battery systems.
Availability
LM4041BIM7X-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and process control applications requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for LM4041BIM7X-1.2/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 company delivering analog and embedded processing solutions, with leadership in precision analog, power management, and signal chain technologies.
The LM4041-N product line delivers micro-power shunt voltage references optimized for space-constrained, low-quiescent-current applications in industrial, automotive, and portable instrumentation systems.
FAQ
What is the maximum operating current for LM4041BIM7X-1.2/NOPB?
The LM4041BIM7X-1.2/NOPB supports a maximum operating current of 12 mA. This upper limit ensures safe power dissipation within the SOT-23 package's thermal limits (306 mW at 25°C ambient) while maintaining regulation accuracy and long-term stability. Exceeding 12 mA risks exceeding junction temperature limits and degrading voltage accuracy or reliability.
Does LM4041BIM7X-1.2/NOPB require an external capacitor for stability?
No, LM4041BIM7X-1.2/NOPB does not require an external output capacitor for stability. Its internal design provides inherent phase margin across its full operating current range (60 μA–12 mA) and remains stable even with capacitive loads up to several nanofarads - a key advantage over older shunt references that mandate external compensation.
What is the thermal hysteresis specification for LM4041BIM7X-1.2/NOPB?
The LM4041BIM7X-1.2/NOPB exhibits 0.08% thermal hysteresis, defined as the voltage difference measured at +25°C after cycling to −40°C versus after cycling to +125°C. For the 1.225 V output, this equates to <1 mV hysteresis error - critical for applications demanding repeatable calibration, such as portable test equipment and field-serviceable sensors.
Is LM4041BIM7X-1.2/NOPB qualified for automotive applications?
Yes, LM4041BIM7X-1.2/NOPB is AEC-Q100 qualified as Grade 3 (−40°C to +85°C ambient), making it suitable for non-engine-compartment automotive applications including body control modules, infotainment power supplies, and ADAS sensor interfaces. It is not rated for Grade 1 (−40°C to +125°C) extended temperature operation.
What is the reverse dynamic impedance of LM4041BIM7X-1.2/NOPB at 1 mA?
The reverse dynamic impedance of LM4041BIM7X-1.2/NOPB is specified as ≤1.5 Ω at 1 mA, 120 Hz, with 0.1× AC current superimposed. This low impedance ensures minimal output voltage variation under load transients - for example, a 1 mA step change induces <1.5 mV shift - directly supporting high-precision analog measurement integrity.
LM4041BIM7X-1.2/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041BIM7X-1.2/NOPB FAQ
1.How can I place an order for LM4041BIM7X-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041BIM7X-1.2/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 LM4041BIM7X-1.2/NOPB reliable?
The price and inventory of LM4041BIM7X-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041BIM7X-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041BIM7X-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041BIM7X-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041BIM7X-1.2/NOPB?
LM4041BIM7X-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041BIM7X-1.2/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 LM4041BIM7X-1.2/NOPB?
For technical support, including LM4041BIM7X-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041BIM7X-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041BIM7X-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041BIM7X-1.2/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 LM4041BIM7X-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041BIM7X-1.2/NOPB?
All LM4041BIM7X-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041BIM7X-1.2/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 LM4041BIM7X-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041BIM7X-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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