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Texas Instruments LM4041DIM7-1.2/NOPB
- Part No.:
- LM4041DIM7-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041DIM7-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:16,851
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Product details
Overview
LM4041DIM7-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SC70-5 package, rated for industrial temperature range (−40°C to +85°C), with ±0.2% initial tolerance (Grade B), 100 ppm/°C max tempco, 20 μVRMS noise (10 Hz–10 kHz), and 60 μA–12 mA operating current. It serves as a stable reference in ADC biasing, sensor excitation, and portable power monitoring circuits.
For engineers reviewing the LM4041DIM7-1.2/NOPB datasheet, LM4041DIM7-1.2/NOPB pinout, LM4041DIM7-1.2/NOPB application, or LM4041DIM7-1.2/NOPB equivalent, key selection criteria include reverse breakdown voltage accuracy at low current, capacitive load stability, thermal hysteresis (<0.08%), long-term drift (120 ppm over 1000 hrs), and SC70 footprint compatibility in space-constrained designs.
Technical Context
The LM4041DIM7-1.2/NOPB uses Zener-zap trimmed bandgap architecture with curvature-corrected temperature drift compensation, enabling stable 1.225 V output across −40°C to +85°C without external capacitor. Its low dynamic impedance (≤1.5 Ω at 1 mA) and high PSRR support accurate sensing in noisy supply environments.
Designed for shunt-mode operation, it sinks current via cathode while anode connects to ground; feedback pin (FB) is unused in fixed 1.2 V configuration and must be floated or tied to anode. The SC70-5 package integrates no-connect pins (4 and 5), confirmed per TI's DBZ/DCK pinout documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage, stable under 60 μA–12 mA cathode current |
| Initial Tolerance | ±0.2% (Grade B) at 25°C - ensures ≤2.4 mV absolute error in precision DAC/ADC references |
| Tempco | ≤100 ppm/°C over −40°C to +85°C - limits drift to ±8.5 mV across full industrial range |
| Noise | 20 μVRMS (10 Hz–10 kHz) - suitable for 16-bit+ data acquisition without added filtering |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - maintains regulation during fast load transients in battery-fuel gauging |
| Thermal Hysteresis | 0.08% - guarantees repeatability after thermal cycling in automotive cabin modules |
| Long-Term Stability | 120 ppm over 1000 hrs - supports 10-year calibration intervals in energy metering |
Pinout & Package
LM4041DIM7-1.2/NOPB uses the 5-pin SC70 (DCK) package (1.25 mm × 2.00 mm), with pins 1–3 assigned to anode, cathode, and FB; pins 4 and 5 are no-connect. Pin 3 (FB) must float or connect to anode in fixed-voltage mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Ground reference node; internal connection to substrate; must be tied to system GND |
| 2 | Cathode | Shunt output terminal; sinks current to maintain 1.225 V across external resistor network |
| 3 | FB (Feedback) | Unused in 1.2 V fixed version; floating or tied to anode prevents instability |
| 4, 5 | NC | No internal connection; electrically isolated; PCB pads may be omitted or grounded for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into ultra-low-power sensor nodes without stability-compromising bypass caps |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance - eliminates need for isolation resistors in ADC reference buffers |
| Low 60 μA minimum operating current | Supports microamp-level system sleep modes while retaining reference accuracy |
| 20 μVRMS wideband noise | Meets SNR requirements for 16-bit SAR ADCs without post-filtering overhead |
| AEC-Q100 Grade 3 qualified | Validated for industrial-temp automotive subsystems including body control and HVAC sensors |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Reference for fuel-gauge ICs and low-power microcontroller ADCs in wearables and IoT sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.225 V for ratiometric measurement against battery voltage. Use Value: 60 μA min current enables operation during deep-sleep states; 0.08% thermal hysteresis ensures consistent SOC estimation after temperature swings. | Use Scenario: Precision reference for 16-bit delta-sigma ADCs in portable multimeters and environmental monitors. IC Role / Device Role / Timing Role: Low-noise (20 μVRMS) voltage source establishing absolute scale for analog input conversion. Use Value: ≤1.5 Ω dynamic impedance minimizes code spread under varying load; SC70 footprint saves board area in handheld form factors. |
| Instrumentation and Test Equipment | Energy Management/Metering |
Use Scenario: Calibration reference in benchtop DMMs and signal generators requiring traceable DC accuracy. IC Role / Device Role / Timing Role: Primary shunt reference for internal DACs and offset trimming circuits. Use Value: ±0.2% initial tolerance and 120 ppm long-term drift enable annual recalibration cycles without hardware replacement. | Use Scenario: Voltage reference for polyphase energy meter ASICs measuring grid voltage and current simultaneously. IC Role / Device Role / Timing Role: Stable 1.225 V基准 for metrology ADCs and anti-tampering comparators. Use Value: AEC-Q100 Grade 3 qualification ensures reliability in outdoor meter enclosures; 100 ppm/°C tempco meets IEC 62053-21 Class 0.2 accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM7-1.2/NOPB | ±0.5% initial tolerance (Grade C) vs. ±0.2% (Grade B); same SC70-5 package and 100 ppm/°C tempco | Lower accuracy acceptable in cost-sensitive industrial controls where 6 mV error is tolerable | Select when budget constraints outweigh need for <2.5 mV absolute reference error |
| REF3012AIDBZR | 1.2 V output, SOT-23-3, ±0.2% tolerance, but higher 50 μVRMS noise and 150 ppm/°C tempco | Suitable for non-critical biasing in motor drives; not recommended for 16-bit+ data acquisition | Choose only if SC70-5 footprint is not required and noise >20 μVRMS is acceptable |
Compared with LM4041CIM7-1.2/NOPB, the LM4041DIM7-1.2/NOPB delivers tighter initial accuracy for metrology-grade systems; versus REF3012AIDBZR, it offers lower noise and superior temperature stability in the same small-outline format, making it preferred for high-resolution sensing.
Availability
LM4041DIM7-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and energy management/metering requiring stable component supply with guaranteed long-term availability.
Supply support for LM4041DIM7-1.2/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.
The LM4041-N series targets space-constrained, low-power applications demanding high initial accuracy and thermal stability - particularly in portable instrumentation, automotive subsystems, and smart utility meters.
FAQ
What is the maximum operating current for LM4041DIM7-1.2/NOPB?
The LM4041DIM7-1.2/NOPB supports a maximum cathode current of 12 mA, verified per TI's Electrical Characteristics table (Section 5.5). This allows use with low-value anode resistors down to ~100 Ω when supplied from 2.5 V rails, while maintaining regulation and thermal safety within the SC70 package's 241 mW power dissipation limit at 25°C.
Does LM4041DIM7-1.2/NOPB require an external capacitor for stability?
No, the LM4041DIM7-1.2/NOPB does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load up to at least 10 nF, as confirmed in TI's Features and Description sections. This eliminates layout complexity and component count in compact battery-powered designs.
What is the thermal hysteresis specification for LM4041DIM7-1.2/NOPB?
The LM4041DIM7-1.2/NOPB has a thermal hysteresis of 0.08%, defined as the voltage difference measured at +25°C after cycling to −40°C versus +125°C. This value is explicitly listed in Sections 5.5–5.7 of the datasheet and ensures repeatable reference performance in automotive and industrial environments subject to repeated thermal stress.
Can LM4041DIM7-1.2/NOPB be used in automotive applications?
Yes - LM4041DIM7-1.2/NOPB is AEC-Q100 Grade 3 qualified (−40°C to +85°C), explicitly stated in TI's Features and Device Information tables. It is approved for non-safety-critical automotive subsystems such as cabin sensors, body control modules, and infotainment power monitoring, but not for ASIL-B/C safety domains.
What is the noise performance of LM4041DIM7-1.2/NOPB?
The LM4041DIM7-1.2/NOPB delivers 20 μVRMS wideband noise over 10 Hz to 10 kHz, a typified value confirmed in Sections 5.5–5.9 of the datasheet. This low-noise floor supports high-resolution analog-to-digital conversion without additional filtering, making it suitable for 16-bit+ data acquisition systems.
LM4041DIM7-1.2/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:
- ±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:
- SC-70-5
LM4041DIM7-1.2/NOPB FAQ
1.How can I place an order for LM4041DIM7-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM7-1.2/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 LM4041DIM7-1.2/NOPB reliable?
The price and inventory of LM4041DIM7-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIM7-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DIM7-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM7-1.2/NOPB transactions.
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4.How is shipping managed for LM4041DIM7-1.2/NOPB?
LM4041DIM7-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM7-1.2/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 LM4041DIM7-1.2/NOPB?
For technical support, including LM4041DIM7-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM7-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041DIM7-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIM7-1.2/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 LM4041DIM7-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIM7-1.2/NOPB?
All LM4041DIM7-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM7-1.2/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 LM4041DIM7-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIM7-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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