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Texas Instruments LM4041BIM7X-1.2
- Part No.:
- LM4041BIM7X-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041BIM7X-1.2.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,521
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Product details
Overview
LM4041BIM7X-1.2 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 serves as a stable reference in ADC/DAC biasing, battery monitoring, and sensor signal conditioning circuits.
For engineers reviewing the LM4041BIM7X-1.2 datasheet, LM4041BIM7X-1.2 pinout, LM4041BIM7X-1.2 application, or LM4041BIM7X-1.2 equivalent, key selection criteria include reverse breakdown voltage accuracy over temperature, minimum operating current (60 μA), dynamic impedance (≤1.5 Ω), capacitive load stability, and AEC-Q100 Grade 3 qualification for automotive subsystems.
Technical Context
The LM4041BIM7X-1.2 implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation. Its Zener-zap trimmed die ensures ±0.2% initial accuracy without external trimming components.
It operates as a two-terminal device: cathode supplies shunt current and defines output voltage, while anode connects to system ground. The design eliminates need for output capacitance and tolerates arbitrary capacitive loads-enabling direct integration into space-constrained, low-power analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets precise bias point for 12-bit+ data converters and low-voltage comparators |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - enables single-point calibration in production test without trim resistors |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures ≤±0.85% total error across full industrial range |
| Min Operating Current | 60 μA - supports ultra-low-power operation in coin-cell or energy-harvesting systems |
| Noise (10Hz–10kHz) | 20 μVRMS - minimizes quantization uncertainty in high-resolution measurement chains |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - maintains regulation stability under fast load transients |
| Long-Term Stability | 120 ppm after 1000 hrs - ensures reference integrity over multi-year product lifetimes |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, tape-and-reel compatible. Pin 1 = Cathode (output/shunt node), Pin 2 = Anode (ground), Pin 3 = NC (no connect, must float or tie to anode per TI layout guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Shunt current sink and output voltage node | Connects to regulated voltage rail; sinks all excess current to maintain 1.225 V at this node |
| Pin 2 (Anode) | Reference ground terminal | Must be connected to system ground; forms return path for shunt current |
| Pin 3 (NC) | No-connect terminal | Not internally bonded; leave floating or tie to Pin 2 (anode) in EMI-sensitive layouts |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct use in compact PCB footprints without stability-compromising external C |
| Tolerates capacitive loads | Stable with >100 nF load capacitance - simplifies filtering in noisy environments |
| Low 60 μA minimum current | Supports operation from microcontroller GPIO pins or ultra-low-quiescent LDOs |
| AEC-Q100 Grade 3 qualified | Validated for automotive cabin electronics (−40°C to +85°C ambient) |
| 20 μVRMS noise | Reduces effective number of bits (ENOB) degradation in 16-bit+ SAR ADC references |
Applications
| Battery Voltage Monitoring | Data Acquisition Front-End |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging in portable medical devices. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference for 12-bit ADC input scaling. Use Value: Enables ±0.2% absolute voltage measurement accuracy without factory calibration. |
Use Scenario: Precision analog signal conditioning in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Reference source for multiplexed 16-bit sigma-delta ADC channels. Use Value: 20 μVRMS noise and 100 ppm/°C TC ensure <0.01% gain drift over temperature. |
| Automotive Cabin Sensors | Energy Metering IC Biasing |
Use Scenario: Supplying reference voltage to pressure and humidity sensors in HVAC control units. IC Role / Device Role / Timing Role: Stable bias for ratiometric sensor excitation and ADC reference in AEC-Q100-compliant designs. Use Value: Grade 3 qualification and ±0.2% tolerance meet ASIL-B functional safety requirements for non-safety-critical sensing. |
Use Scenario: Providing reference to metrology-grade energy metering SoCs (e.g., TI MSP430FE427). IC Role / Device Role / Timing Role: Primary voltage reference for polyphase watt-hour measurement with anti-tampering detection. Use Value: 120 ppm long-term stability ensures meter calibration remains valid over 10+ year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM3-1.2 | ±0.5% initial tolerance (C-grade), same SOT-23-3 package and 1.225 V output | Lower accuracy acceptable in cost-sensitive consumer instrumentation where calibration is performed | Select when ±0.5% tolerance meets system error budget and BOM cost reduction is prioritized |
| REF3012AIDBZR | 1.2 V output, ±0.2% tolerance, but higher 50 μA min current and 35 μVRMS noise | Requires external 100 nF capacitor for stability; not inherently capacitive-load tolerant | Choose if lower quiescent current is critical and board area allows stabilization capacitor |
Compared with LM4041CIM3-1.2, the LM4041BIM7X-1.2 delivers tighter initial accuracy for uncalibrated systems; compared with REF3012AIDBZR, it offers superior noise performance and intrinsic capacitive-load immunity-reducing layout complexity in space-constrained designs.
Availability
LM4041BIM7X-1.2 is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and automotive electronics requiring stable component supply across extended production cycles.
Supply support for LM4041BIM7X-1.2 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-qualified components.
The LM4041-N series was developed to deliver high-accuracy, low-power shunt references for space-constrained, battery-operated, and automotive-grade applications-emphasizing ease of use, thermal stability, and qualification rigor.
FAQ
What is the maximum operating current for LM4041BIM7X-1.2?
The LM4041BIM7X-1.2 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 reliability degradation. The LM4041BIM7X-1.2 maintains regulation across its full 60 μA to 12 mA operating range.
Does LM4041BIM7X-1.2 require an external capacitor for stability?
No, the LM4041BIM7X-1.2 does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load-including bypass caps up to several microfarads-eliminating the need for external compensation. This feature simplifies layout and reduces bill-of-materials count. The LM4041BIM7X-1.2 achieves this via advanced bandgap curvature correction and low dynamic impedance.
Is LM4041BIM7X-1.2 qualified for automotive applications?
Yes, the LM4041BIM7X-1.2 is AEC-Q100 Grade 3 qualified for automotive applications, supporting operation from −40°C to +85°C ambient temperature. It meets stringent reliability and stress-test requirements for cabin electronics, including thermal cycling, humidity testing, and ESD robustness (±2 kV HBM). The LM4041BIM7X-1.2 is not rated for engine bay (Grade 1) use.
What is the thermal hysteresis specification for LM4041BIM7X-1.2?
The LM4041BIM7X-1.2 exhibits 0.08% thermal hysteresis-the voltage difference measured at +25°C after cycling to −40°C versus after cycling to +125°C. This low hysteresis ensures repeatable reference performance across thermal cycles in field-deployed equipment. The LM4041BIM7X-1.2 achieves this via monolithic silicon design and proprietary trimming processes.
Can LM4041BIM7X-1.2 be used in adjustable-output configurations?
No, the LM4041BIM7X-1.2 is a fixed 1.225 V shunt reference and lacks a feedback (FB) pin. Adjustable versions (e.g., LM4041AIM3-ADJ) use a dedicated FB pin and external resistor divider. The LM4041BIM7X-1.2 has only three pins: cathode, anode, and NC. Attempting to configure it as adjustable will result in incorrect or unstable output voltage.
LM4041BIM7X-1.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for LM4041BIM7X-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041BIM7X-1.2 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 reliable?
The price and inventory of LM4041BIM7X-1.2 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 is usually 5 days.
3.What payment methods are accepted for LM4041BIM7X-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041BIM7X-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041BIM7X-1.2?
LM4041BIM7X-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041BIM7X-1.2 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?
For technical support, including LM4041BIM7X-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041BIM7X-1.2 requirements.
6.How does Aetrix verify that LM4041BIM7X-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041BIM7X-1.2 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 meets industry standards.
7.What is the process for return or replacement of LM4041BIM7X-1.2?
All LM4041BIM7X-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041BIM7X-1.2, 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 part is unused and in its original packaging.
Return procedure for LM4041BIM7X-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041BIM7X-1.2 Tags
-
TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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