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Texas Instruments LM4041CIM7-1.2/NOPB
- Part No.:
- LM4041CIM7-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041CIM7-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:285
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Product details
Overview
LM4041CIM7-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23-3 package, rated for extended temperature operation (−40°C to +125°C), with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It delivers stable reference performance in low-power data acquisition and automotive sensor signal conditioning circuits.
For engineers reviewing the LM4041CIM7-1.2/NOPB datasheet, LM4041CIM7-1.2/NOPB pinout, LM4041CIM7-1.2/NOPB application, or LM4041CIM7-1.2/NOPB equivalent, key selection criteria include its fixed 1.225 V output, Grade C accuracy grade, SOT-23 thermal resistance (291.9°C/W), no-output-capacitor requirement, and compatibility with capacitive loads up to 10 nF.
Technical Context
The LM4041CIM7-1.2/NOPB uses Zener-zap trimmed bandgap architecture with curvature-corrected temperature drift compensation, enabling stable reverse breakdown voltage across −40°C to +125°C. Its dynamic impedance remains ≤1.5 Ω at 1 mA, supporting high-PSRR analog front-ends.
It operates as a two-terminal shunt device: cathode supplies regulated voltage while anode connects to system ground. The design eliminates external stabilization capacitors and tolerates any capacitive load without oscillation-critical for space-constrained battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed value enables direct replacement of 1.2 V references without resistor networks. |
| Initial Tolerance | ±0.5% at 25°C (Grade C); corresponds to ±6.1 mV absolute error for calibration-critical 12-bit ADC biasing. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C; contributes ≤±12.2 mV drift across full range, suitable for automotive under-hood use. |
| Operating Current | 60 μA to 12 mA; ultra-low 60 μA minimum supports coin-cell-powered IoT sensors with >10-year battery life. |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); low enough for 16-bit SAR ADC reference without additional filtering. |
| Dynamic Impedance | ≤1.5 Ω at 1 mA; ensures <1 mV load regulation shift per 1 mA current change in precision current-sense applications. |
| Thermal Hysteresis | 0.08% (≈0.98 mV); minimal voltage memory effect after thermal cycling improves repeatability in field-deployed meters. |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size) with gull-wing leads; JEDEC MS-012 compliant; RoHS-compliant / NOPB finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt output node | Provides 1.225 V reference voltage; sinks all operating current; connects to load and feedback network. |
| Anode (Pin 2) | Ground reference | Must be connected to system ground; serves as return path for shunt current and defines output voltage reference point. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per TI layout guidance to suppress EMI coupling in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compensation components or board area penalty. |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance-supports direct connection to ADC input capacitors or long traces without phase margin loss. |
| Extended temperature range | Rated −40°C to +125°C ambient; qualified per AEC-Q100 Grade 1, enabling use in engine control modules and industrial PLCs. |
| Low quiescent current | 60 μA minimum operating current allows operation from micro-power LDOs or energy-harvesting sources. |
| Low output noise | 20 μVRMS broadband noise preserves SNR in precision measurement chains without post-regulation filtering. |
Applications
| Battery-Powered Sensor Node | Data-Acquisition Front-End |
|---|---|
Use Scenario: Low-power environmental sensor (temperature/humidity) powered by CR2032 coin cell, transmitting via BLE every 5 minutes. IC Role / Device Role / Timing Role: Shunt reference for 12-bit ADC measuring thermistor voltage divider output. Use Value: 60 μA min operating current extends battery life beyond 5 years; 100 ppm/°C tempco ensures <±0.5°C measurement error across outdoor temperature range. |
Use Scenario: Industrial 4–20 mA loop-powered transmitter with local analog sensing and digital output. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric excitation of RTD bridge and ADC reference input. Use Value: ±0.5% initial tolerance and 0.08% thermal hysteresis enable <0.1% total system accuracy over field lifetime without recalibration. |
| Automotive Cabin Pressure Sensor | Energy Meter Reference Subsystem |
Use Scenario: MEMS-based cabin pressure transducer in HVAC control module, operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Stable 1.225 V reference for sigma-delta ADC digitizing differential pressure output. Use Value: AEC-Q100 Grade 1 qualification and 125°C junction rating ensure reliability in under-dash mounting; 20 μVRMS noise prevents LSB toggling in 16-bit conversion. |
Use Scenario: Class 0.5 polyphase electricity meter requiring metrology-grade voltage reference for anti-tampering detection. IC Role / Device Role / Timing Role: Primary shunt reference for isolated ADC measuring mains voltage waveform. Use Value: Long-term stability of 120 ppm/1000 hrs and low thermal hysteresis maintain billing accuracy over 10+ year service life without field adjustment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4051C12IDBZR | Same 1.225 V output, SOT-23-3, ±0.5% tolerance, but higher 150 ppm/°C tempco and 35 μVRMS noise. | Limited to industrial (−40°C to +85°C) range; not AEC-Q100 qualified. | Acceptable where automotive qualification or ultra-low noise is not required; lower cost in high-volume consumer designs. |
| MAX6008AEUR+T | 1.25 V output (not 1.225 V), SOT-23-3, ±0.2% tolerance, 75 ppm/°C tempco, 25 μVRMS noise. | Industrial temp range only (−40°C to +85°C); no automotive qualification; requires 100 μA min current. | Preferred when tighter initial accuracy is critical and 25 mV output offset vs. LM4041CIM7-1.2/NOPB is acceptable in system gain calibration. |
Compared with TL4051C12IDBZR and MAX6008AEUR+T, the LM4041CIM7-1.2/NOPB offers superior thermal stability (100 vs. 150/75 ppm/°C), lower noise (20 vs. 35/25 μVRMS), and automotive qualification-making it the optimal choice for safety-critical or high-accuracy extended-temperature deployments.
Availability
LM4041CIM7-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and automotive electronics requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4041CIM7-1.2/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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and automotive-grade component validation.
The LM4041-N series was developed to deliver high-accuracy, low-noise shunt references in miniature packages for space-constrained, high-reliability applications including automotive sensors, portable instrumentation, and smart metering.
FAQ
What is the maximum operating current for LM4041CIM7-1.2/NOPB?
The LM4041CIM7-1.2/NOPB supports a maximum operating current of 12 mA. This upper limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient. Exceeding 12 mA risks thermal overload and long-term parametric drift, especially above 85°C ambient.
Does LM4041CIM7-1.2/NOPB require an external capacitor for stability?
No, the LM4041CIM7-1.2/NOPB does not require an external output capacitor. Its internal design provides unconditional stability with any capacitive load, including direct connection to ADC input capacitors or long PCB traces-eliminating layout sensitivity and reducing BOM count.
Is LM4041CIM7-1.2/NOPB qualified for automotive applications?
Yes, LM4041CIM7-1.2/NOPB is AEC-Q100 Grade 1 qualified for −40°C to +125°C ambient operation. It meets automotive reliability requirements including HTOL, TC, and ESD testing, making it suitable for engine control, cabin sensing, and ADAS subsystems.
What is the thermal hysteresis specification for LM4041CIM7-1.2/NOPB?
The LM4041CIM7-1.2/NOPB exhibits 0.08% thermal hysteresis-equivalent to ≈0.98 mV at 1.225 V-measured as the voltage difference at 25°C after cycling between −40°C and +125°C. This low hysteresis ensures repeatable calibration in field-deployed instruments subject to repeated thermal stress.
Can LM4041CIM7-1.2/NOPB drive a 10 nF capacitive load?
Yes, LM4041CIM7-1.2/NOPB is explicitly characterized to remain stable with ≥10 nF capacitive loads. This capability enables direct interface with sampling capacitors of high-resolution SAR ADCs and eliminates need for isolation resistors or damping networks in precision measurement paths.
LM4041CIM7-1.2/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:
- ±0.5%
- 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
LM4041CIM7-1.2/NOPB FAQ
1.How can I place an order for LM4041CIM7-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM7-1.2/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 LM4041CIM7-1.2/NOPB reliable?
The price and inventory of LM4041CIM7-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM7-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CIM7-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CIM7-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CIM7-1.2/NOPB?
LM4041CIM7-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM7-1.2/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 LM4041CIM7-1.2/NOPB?
For technical support, including LM4041CIM7-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM7-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041CIM7-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CIM7-1.2/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 LM4041CIM7-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CIM7-1.2/NOPB?
All LM4041CIM7-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM7-1.2/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 LM4041CIM7-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041CIM7-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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