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Texas Instruments LM4041DIM3X-1.2/NOPB
- Part No.:
- LM4041DIM3X-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DIM3X-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,571
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Product details
Overview
LM4041DIM3X-1.2/NOPB from Texas Instruments is a precision 1.225V shunt voltage reference in SC70-5 package, rated for industrial temperature range (−40°C to +85°C), with ±0.5% initial tolerance at 25°C, 100 ppm/°C max tempco, and 20 μVRMS noise (10 Hz–10 kHz). It serves as a stable reference in low-power analog signal chains for battery-powered instrumentation.
For engineers reviewing the LM4041DIM3X-1.2/NOPB datasheet, LM4041DIM3X-1.2/NOPB pinout, LM4041DIM3X-1.2/NOPB application, or LM4041DIM3X-1.2/NOPB equivalent, key selection criteria include its fixed 1.225V output, SC70-5 footprint compatibility, no-output-capacitor operation, reverse breakdown current range (60 μA–12 mA), and AEC-Q100 Grade 3 qualification for automotive subsystems.
Technical Context
The LM4041DIM3X-1.2/NOPB uses a bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its three-terminal SC70-5 configuration (Anode, Cathode, FB) supports both fixed-voltage and adjustable configurations via external resistor divider on the FB pin - though this specific variant is factory-set to 1.225 V.
It operates without an output capacitor and maintains stability across capacitive loads up to 10 nF. The device achieves 0.5% initial accuracy (C grade) and guarantees ≤100 ppm/°C temperature coefficient over −40°C to +85°C, enabling high-accuracy ADC/DAC biasing in space-constrained portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed value trimmed at wafer sort for precise analog reference generation |
| Initial Tolerance | ±0.5% at 25°C (C grade); ensures ≤6.1 mV absolute error in calibration-critical circuits |
| Tempco | ≤100 ppm/°C over −40°C to +85°C; limits drift to ±8.5 mV across full industrial range |
| Operating Current | 60 μA to 12 mA; supports ultra-low-power sensor interfaces and high-current DAC references |
| Noise (10 Hz–10 kHz) | 20 μVRMS; enables sub-16-bit resolution in precision data acquisition without filtering overhead |
| Dynamic Impedance | 1.5 Ω max at 1 mA; minimizes load-induced voltage shift in varying-current applications |
| Long-Term Stability | 120 ppm after 1000 hrs; supports >10-year system calibration integrity in metering equipment |
Pinout & Package
LM4041DIM3X-1.2/NOPB is packaged in a 5-pin SC70 (DCK) case measuring 1.25 mm × 2.00 mm. Pin 1 = FB (feedback input), Pin 2 = Anode (ground reference), Pin 3 = Cathode (output/shunt node), Pins 4–5 = NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (FB) | Feedback input | Enables adjustable output mode; must be left floating or tied to Anode for fixed 1.225V operation |
| Pin 2 (Anode) | Reference ground | Low-impedance return path; connects to system ground or negative rail in shunt topology |
| Pin 3 (Cathode) | Shunt output | Provides regulated 1.225V reference; sinks current proportional to load demand |
| Pins 4 & 5 | No connect | Unused terminals; no internal connection; may be left unconnected or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board area for stabilization; simplifies layout in wearables and IoT nodes |
| Tolerates capacitive loads | Stable with up to 10 nF output capacitance; allows direct coupling to ADC sample-and-hold inputs |
| Low quiescent current | 60 μA minimum operating current enables multi-year battery life in remote sensors |
| SC70-5 footprint | 1.25 mm × 2.00 mm body size saves >60% board area vs. SOT-23; ideal for miniaturized medical devices |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C ambient; suitable for infotainment power supplies and ADAS sensor modules |
Applications
| Battery-Powered Instrumentation | Data-Acquisition Systems |
|---|---|
|
Use Scenario: Portable multimeter front-end requiring stable reference under varying battery voltage (2.7–4.2 V). IC Role / Device Role / Timing Role: Shunt reference providing 1.225 V for 16-bit SAR ADC bias and offset calibration. Use Value: ±0.5% initial tolerance and 100 ppm/°C tempco ensure <0.01% full-scale error across temperature and battery discharge cycle. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and sigma-delta ADC. Use Value: 20 μVRMS noise and 1.5 Ω dynamic impedance prevent SNR degradation in 24-bit measurement systems. |
| Energy Metering | Automotive Cabin Electronics |
|
Use Scenario: DIN-rail energy monitor measuring voltage/current harmonics with metrology-grade accuracy. IC Role / Device Role / Timing Role: Reference source for anti-aliasing filter biasing and ADC reference voltage. Use Value: 120 ppm long-term stability supports 10-year calibration validity per IEC 62053 standards. |
Use Scenario: HVAC control unit in passenger compartment with ambient temperature swings from −40°C to +85°C. IC Role / Device Role / Timing Role: Voltage reference for microcontroller ADC monitoring of thermistor and pressure sensor outputs. Use Value: AEC-Q100 Grade 3 qualification and guaranteed operation across full industrial range ensure functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040DIM3-1.2/NOPB | Same 1.225 V output and C-grade tolerance, but SOT-23-3 package (larger footprint, no FB pin) | Lacks adjustable mode support; simpler layout but no future-proofing for voltage scaling | Select when board space permits larger package and adjustable output is unnecessary |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial accuracy, SC70-5, 75 ppm/°C tempco, 30 μVRMS noise | Higher accuracy but higher noise; not AEC-Q100 qualified | Prefer for non-automotive lab equipment where tighter tolerance outweighs noise penalty |
Compared with LM4041DIM3X-1.2/NOPB, LM4040DIM3-1.2/NOPB trades adjustability and SC70 miniaturization for robustness in legacy layouts, while MAX6008AEUR+T offers superior initial accuracy at the cost of automotive qualification and higher broadband noise - making LM4041DIM3X-1.2/NOPB optimal for space-constrained, temperature-stable, and automotive-qualified designs.
Availability
LM4041DIM3X-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, energy metering, and automotive cabin electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041DIM3X-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 engineered for high-accuracy, low-power shunt referencing in space-constrained and thermally demanding environments - particularly targeting portable test gear, industrial DAQ, and automotive subsystems needing AEC-Q100 compliance.
FAQ
What is the output voltage tolerance of LM4041DIM3X-1.2/NOPB over temperature?
The LM4041DIM3X-1.2/NOPB has a ±0.5% initial tolerance at 25°C (C grade), and its total tolerance over −40°C to +85°C is ±14 mV (±1.15%). This includes both initial error and temperature-induced drift calculated using its 100 ppm/°C max tempco and 65°C ΔT from 25°C. The LM4041DIM3X-1.2/NOPB meets this spec across its full industrial operating range without derating.
Can LM4041DIM3X-1.2/NOPB be used in adjustable mode?
Yes - the LM4041DIM3X-1.2/NOPB includes a dedicated FB (feedback) pin (Pin 1) that allows reconfiguration as an adjustable reference using an external resistor divider. When Pin 1 is left floating or tied to Anode (Pin 2), it operates as a fixed 1.225 V shunt. The LM4041DIM3X-1.2/NOPB datasheet provides resistor calculation formulas and stability guidelines for adjustable use cases.
Does LM4041DIM3X-1.2/NOPB require an output capacitor?
No - the LM4041DIM3X-1.2/NOPB is designed to operate stably without any output capacitor, reducing BOM count and PCB area. It also tolerates capacitive loads up to 10 nF, enabling direct connection to sampling capacitors in successive-approximation ADCs. This capability is verified across all operating currents (60 μA–12 mA) and temperatures for the LM4041DIM3X-1.2/NOPB.
What is the maximum operating current for LM4041DIM3X-1.2/NOPB?
The LM4041DIM3X-1.2/NOPB supports a maximum operating (shunt) current of 12 mA. At this current, power dissipation in the SC70-5 package remains within safe limits (241 mW rating), assuming proper PCB thermal relief. Derating is recommended above 85°C ambient; the LM4041DIM3X-1.2/NOPB's thermal resistance (RθJA = 265.3°C/W) allows ~7.5 mA max at 100°C junction temperature.
Is LM4041DIM3X-1.2/NOPB qualified for automotive applications?
Yes - the LM4041DIM3X-1.2/NOPB is part of the LM4041-N-Q1 family and is AEC-Q100 Grade 3 qualified for −40°C to +85°C ambient operation. It undergoes stress testing including HTOL, temperature cycling, and ESD per JESD22 standards. While not Grade 1 (125°C), its qualification makes it suitable for cabin electronics, body control modules, and non-engine-compartment automotive subsystems.
LM4041DIM3X-1.2/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:
- Active
- 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:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041DIM3X-1.2/NOPB FAQ
1.How can I place an order for LM4041DIM3X-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM3X-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 LM4041DIM3X-1.2/NOPB reliable?
The price and inventory of LM4041DIM3X-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 LM4041DIM3X-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DIM3X-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM3X-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIM3X-1.2/NOPB?
LM4041DIM3X-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM3X-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 LM4041DIM3X-1.2/NOPB?
For technical support, including LM4041DIM3X-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM3X-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041DIM3X-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIM3X-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 LM4041DIM3X-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIM3X-1.2/NOPB?
All LM4041DIM3X-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM3X-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 LM4041DIM3X-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIM3X-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041DIM3X-1.2/NOPB Tags
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