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Texas Instruments LM4041D12IDBZRG4
- Part No.:
- LM4041D12IDBZRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041D12IDBZRG4.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LM4041D12IDBZRG4 from Texas Instruments is a precision micropower shunt voltage reference with fixed 1.225 V output, ±1.0% initial tolerance (D grade), 150 ppm/°C max temperature coefficient, 20 μVRMS wideband noise, and stable operation from 45 μA to 12 mA cathode current - used in high-accuracy power-supply monitoring and data-acquisition front-ends.
For engineers reviewing the LM4041D12IDBZRG4 datasheet, LM4041D12IDBZRG4 pinout, LM4041D12IDBZRG4 application, or LM4041D12IDBZRG4 equivalent, this page delivers verified electrical specifications, SOT-23-3 pin mapping, industrial-grade (–40°C to +85°C) thermal performance, and real-world substitution guidance for precision analog design.
Technical Context
The LM4041D12IDBZRG4 implements a Zener-based shunt reference architecture trimmed via Zener-zap during wafer sort to achieve its D-grade tolerance. It operates as a two-terminal device requiring only an external series resistor to regulate output voltage across variable loads.
Its internal topology includes low dynamic impedance (≤2 Ω at 1 mA), no requirement for output capacitance, and stability with all capacitive loads - enabling direct integration into space-constrained, battery-powered systems without compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V nominal; enables precise biasing of ADCs, DACs, and comparators without external resistors. |
| Initial Tolerance | ±1.0% max at 25°C (D grade); supports cost-sensitive industrial applications where 1% accuracy suffices. |
| Temp Coefficient | 150 ppm/°C max over –40°C to +85°C; ensures <±1.2 mV drift across full industrial range. |
| Operating Current | 45 μA to 12 mA cathode current range; allows ultra-low-power sensor nodes and high-current monitoring circuits. |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); maintains signal integrity in high-resolution measurement paths. |
| Dynamic Impedance | ≤2 Ω at 1 mA; minimizes load-induced output variation in dynamically changing current conditions. |
| Long-Term Stability | 120 ppm after 1000 h; guarantees minimal calibration drift in metering and instrumentation deployments. |
Pinout & Package
LM4041D12IDBZRG4 is packaged in a 3-pin SOT-23 (DBZ) surface-mount package with 1.0 mm pitch, 2.92 mm × 1.3 mm footprint, and JEDEC-standard thermal profile (θJA = 206°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Shunt current sink / output node | Connects to regulated output rail; carries total cathode current (IZ + IL) and defines reference voltage at external node. |
| 2 (Anode) | Reference ground terminal | Must be connected to system ground; serves as return path for cathode current and sets reference potential. |
| 3 (NC) | No-connect terminal | Internally unconnected; must float or tie to Anode (Pin 2) per TI EMI mitigation guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor operation | Stable with any capacitive load up to ≥10 µF; eliminates BOM count and layout sensitivity in compact designs. |
| Micropower startup | Functional down to 45 μA typical cathode current; enables use in energy-harvesting and coin-cell-powered systems. |
| Wide temperature range | Specified from –40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor metering. |
| Low ESD sensitivity | HBM rating of ±2000 V; withstands standard handling without special precautions beyond general ESD protocols. |
| Trimmed Zener core | Fuse and Zener-zap wafer-level trimming; achieves consistent 1.225 V output and tight tolerance without post-package adjustment. |
Applications
| Power-Supply Monitor | Data-Acquisition Front-End |
|---|---|
|
Use Scenario: Monitoring 3.3 V or 5 V rails in PLC I/O modules to detect undervoltage faults before system reset. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V threshold for comparator input in supply supervision circuit. Use Value: Enables accurate trip-point detection within ±1.0% tolerance across –40°C to +85°C, reducing false alarms in harsh environments. |
Use Scenario: Biasing the reference input of a 16-bit SAR ADC in portable test equipment. IC Role / Device Role / Timing Role: Low-noise (20 μVRMS) voltage reference establishing ADC full-scale range. Use Value: Limits code-width error to <0.05 LSB, preserving effective resolution in battery-operated field instruments. |
| Process Control Sensor Node | Battery-Powered Energy Meter |
|
Use Scenario: Providing excitation and reference for 4–20 mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Micropower shunt reference operating at 60 μA to minimize loop current burden. Use Value: Maintains 1.225 V accuracy while consuming <0.08 mW at 1.225 V, extending loop lifetime without sacrificing calibration stability. |
Use Scenario: Serving as reference for metrology-grade ADC in smart electricity meters with 10-year field life. IC Role / Device Role / Timing Role: Long-term-stable (120 ppm/1000 h) shunt reference in revenue-grade measurement path. Use Value: Meets IEC 62053-21 Class 0.2 accuracy requirements over product lifetime without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041C12IDBZRG4 | ±0.5% initial tolerance, 100 ppm/°C max tempco - tighter than LM4041D12IDBZRG4 | Suitable for higher-accuracy applications like portable medical sensors where 0.5% tolerance is required | Select when improved initial accuracy justifies modest cost increase and thermal drift budget permits 100 ppm/°C |
| TLV431ACDBVR | Adjustable 1.24 V reference, ±0.5% tolerance, 100 ppm/°C, 100 μA min cathode current | Requires external resistor divider; not pin-compatible; better for designs needing >1.225 V outputs | Choose when adjustable output (1.24 V to 36 V) and lower minimum current (100 μA vs 45 μA) are prioritized over fixed-voltage simplicity |
Compared with LM4041C12IDBZRG4, the LM4041D12IDBZRG4 trades 0.5% initial accuracy for lower cost and broader tolerance margin; versus TLV431ACDBVR, it offers fixed 1.225 V output, lower minimum current, and true pinout compatibility in SOT-23 - simplifying replacement in legacy 1.225 V designs.
Availability
LM4041D12IDBZRG4 is available at Aetrix Electronics and suitable for power-supply monitors, data-acquisition systems, and process-control instrumentation requiring stable component supply with guaranteed long-term availability.
Supply support for LM4041D12IDBZRG4 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 high-volume manufacturing.
The LM4041 series was developed for cost-effective, space-efficient shunt reference needs in industrial, automotive, and portable electronics - emphasizing micropower operation, capacitor-free stability, and wafer-trimmed accuracy.
FAQ
What is the operating temperature range for LM4041D12IDBZRG4?
The LM4041D12IDBZRG4 is characterized for industrial operation from –40°C to +85°C. Its electrical specifications - including output voltage tolerance, temperature coefficient, and dynamic impedance - are guaranteed across this full range, making it suitable for factory automation, outdoor metering, and automotive body electronics applications where ambient extremes occur.
Does LM4041D12IDBZRG4 require an output capacitor?
No, LM4041D12IDBZRG4 does not require an output capacitor for stability. It is explicitly designed to remain stable with all capacitive loads, including 0 μF. Adding a bypass capacitor is optional and may be used for additional noise filtering, but introduces no risk of oscillation or phase-margin degradation - a key advantage over many series references.
What is the minimum cathode current needed for LM4041D12IDBZRG4 to regulate properly?
The LM4041D12IDBZRG4 requires a minimum cathode current of 45 μA (typical) and 80 μA (max over temperature) to maintain regulation. Below this threshold, output voltage deviates from specification. This ultra-low requirement enables use in energy-harvesting circuits and battery-backed systems where current budgets are constrained to tens of microamps.
How does the LM4041D12IDBZRG4 differ from the adjustable LM4041 variants?
The LM4041D12IDBZRG4 is a fixed-output variant delivering 1.225 V without external resistors. Adjustable versions (e.g., LM4041DIDBZRG4) use a feedback (FB) pin and external resistor divider to set outputs from 1.225 V to 10 V. The fixed version omits the FB pin, uses a 3-pin SOT-23 package, and provides simpler, lower-cost implementation where 1.225 V is sufficient.
Is LM4041D12IDBZRG4 RoHS-compliant and lead-free?
Yes, LM4041D12IDBZRG4 is RoHS-compliant and features lead-free terminations with NiPdAu (NIPDAU) plating. Its packaging meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1, rated for unlimited floor life at ≤30°C/60% RH, and supports standard reflow profiles up to 260°C peak.
LM4041D12IDBZRG4 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):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041D12IDBZRG4 FAQ
1.How can I place an order for LM4041D12IDBZRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041D12IDBZRG4 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 LM4041D12IDBZRG4 reliable?
The price and inventory of LM4041D12IDBZRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041D12IDBZRG4 is usually 5 days.
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LM4041D12IDBZRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041D12IDBZRG4 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 LM4041D12IDBZRG4?
For technical support, including LM4041D12IDBZRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041D12IDBZRG4 requirements.
6.How does Aetrix verify that LM4041D12IDBZRG4 is sourced from the original manufacturer or authorized distributors?
All LM4041D12IDBZRG4 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 LM4041D12IDBZRG4 meets industry standards.
7.What is the process for return or replacement of LM4041D12IDBZRG4?
All LM4041D12IDBZRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041D12IDBZRG4, 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 LM4041D12IDBZRG4 part is unused and in its original packaging.
Return procedure for LM4041D12IDBZRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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