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Texas Instruments LM4041DIM7X-1.2
- Part No.:
- LM4041DIM7X-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041DIM7X-1.2.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,865
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Product details
Overview
LM4041DIM7X-1.2 from Texas Instruments is a precision micropower shunt voltage reference in SC70-5 package, delivering 1.225 V ±0.2% (B-grade) initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and stable operation from 60 μA to 12 mA load current. It serves as a compact, capacitor-free reference for ADC biasing, sensor excitation, and portable power monitoring circuits.
For engineers reviewing the LM4041DIM7X-1.2 datasheet, LM4041DIM7X-1.2 pinout, LM4041DIM7X-1.2 application, or LM4041DIM7X-1.2 equivalent, key selection criteria include guaranteed 1.225 V output accuracy over −40°C to +85°C industrial range, no-output-capacitor operation with capacitive loads up to 10 nF, low 20 μVrms noise (10 Hz–10 kHz), and SC70 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4041DIM7X-1.2 implements a bandgap-based shunt architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±0.2% initial accuracy. Its dynamic impedance remains ≤1.5 Ω at 1 mA, enabling stable regulation under varying load conditions without external capacitance.
Designed for direct replacement of legacy 1.2 V references, it supports reverse-biased operation with cathode as output node and anode grounded-eliminating series pass transistor complexity. The SC70-5 package includes dedicated feedback (FB), cathode, and anode terminals plus two NC pins, enabling flexible layout while maintaining thermal performance (RθJA = 265.3°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V ±0.2% at 25°C - ensures precise biasing for 12-bit ADCs without calibration |
| Temp Coefficient | ≤100 ppm/°C - limits voltage drift to ±8.5 mV across −40°C to +85°C operating range |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensor nodes and high-current DAC references |
| Noise (10 Hz–10 kHz) | 20 μVrms - avoids quantization noise degradation in precision measurement front-ends |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - maintains <±1 mV output shift under 1 mA load transients |
| Long-Term Stability | 120 ppm (1000 hrs) - guarantees minimal calibration drift in field-deployed instrumentation |
| Thermal Hysteresis | 0.08% - ensures repeatable voltage after thermal cycling between −40°C and +125°C |
Pinout & Package
LM4041DIM7X-1.2 is housed in a 5-pin SC70 package (1.25 mm × 2.00 mm body), optimized for thermal dissipation and board-area efficiency in portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must be connected to system ground; defines shunt current return path |
| Cathode (Pin 3) | Output voltage node | Delivers regulated 1.225 V; sinks load current and shunt current simultaneously |
| FB (Pin 5) | Feedback input | Unused in fixed 1.2 V configuration; must float or tie to anode per datasheet |
| NC (Pin 2) | No-connect terminal | Internally unconnected; may be left open or grounded for mechanical stability |
| NC (Pin 4) | No-connect terminal | Internally unconnected; no electrical function; avoid routing signals nearby |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with any capacitive load up to 10 nF - eliminates BOM cost and layout area for stabilization caps |
| Capacitive load tolerance | Operates reliably with ceramic, tantalum, or electrolytic output caps - simplifies power supply filtering design |
| Low quiescent current | 60 μA minimum operating current - enables >10-year battery life in always-on IoT sensors |
| Wide current range | Supports 60 μA–12 mA load - accommodates both micro-power MCU references and high-precision DAC buffers |
| Automotive-qualified option | LM4041-N-Q1 variant available - meets AEC-Q100 Grade 1 (−40°C to +125°C) for engine control modules |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end amplifying microvolt-level cardiac signals. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for 16-bit SAR ADC and op-amp biasing. Use Value: 20 μVrms noise prevents signal-to-noise ratio degradation; 60 μA operation extends single-CR2032 battery life beyond 5 years. |
Use Scenario: 4–20 mA loop-powered transmitter conditioning RTD and thermocouple inputs. IC Role / Device Role / Timing Role: Supplies precision excitation current and ADC reference in isolated analog front-end. Use Value: ±0.2% initial tolerance and 100 ppm/°C TC ensure <0.1% total error over full industrial temperature range. |
| Energy Metering IC Calibration | Automotive Cabin Control Unit |
Use Scenario: Reference source for metrology-grade polyphase energy meter ASICs. IC Role / Device Role / Timing Role: Generates stable 1.225 V for internal ADCs and voltage comparators during revenue-grade measurements. Use Value: 120 ppm long-term stability minimizes recalibration frequency; SC70 package fits tight space constraints near metering SoC. |
Use Scenario: Climate control panel with touch interface and ambient light sensing. IC Role / Device Role / Timing Role: Supplies reference voltage for humidity/temperature sensor ADC and display backlight PWM controller. Use Value: Qualified to AEC-Q100 Grade 1 when used as LM4041QDIM7X-1.2 - ensures reliability in 125°C under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM7X-1.2 | ±0.5% initial tolerance (C-grade), same SC70-5 package and 100 ppm/°C TC | Lower accuracy acceptable in non-critical biasing (e.g., LED current setting) | Select when cost sensitivity outweighs precision requirements; identical pinout and layout |
| REF3012AIDBZR | 1.2 V output, ±0.2% tolerance, but higher 50 μA typical quiescent current and SOT-23-3 package | Limited to lower-current applications due to 10 mA max output; no FB pin for adjustability | Choose if SOT-23-3 footprint is preferred and 50 μA IQ is acceptable; not drop-in due to different pin count and thermal resistance |
Compared with LM4041CIM7X-1.2, the LM4041DIM7X-1.2 offers tighter initial tolerance for higher-accuracy systems; compared with REF3012AIDBZR, it delivers lower minimum operating current and SC70-5 thermal performance, making it preferable for battery longevity and high-density layouts.
Availability
LM4041DIM7X-1.2 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition systems, and energy metering IC calibration requiring stable component supply with guaranteed long-term parametric consistency.
Supply support for LM4041DIM7X-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-grade qualification.
The LM4041-N product line was engineered for space-constrained, low-power applications demanding high initial accuracy and temperature stability-targeting portable instrumentation, automotive subsystems, and industrial process control where shunt topology simplifies design and improves reliability.
FAQ
What is the maximum operating current for LM4041DIM7X-1.2?
The LM4041DIM7X-1.2 supports a maximum operating current of 12 mA. This allows it to drive moderate loads such as ADC reference inputs, op-amp bias networks, or small-signal transducers without external buffering. Exceeding 12 mA risks exceeding absolute maximum power dissipation limits in the SC70-5 package, especially above 85°C ambient.
Does LM4041DIM7X-1.2 require an output capacitor for stability?
No, the LM4041DIM7X-1.2 does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load-including 0–10 nF ceramic, tantalum, or electrolytic types-making it ideal for space-constrained and low-BOM-cost applications where capacitor placement would otherwise complicate layout.
What is the temperature range specification for LM4041DIM7X-1.2?
The LM4041DIM7X-1.2 is specified for the industrial temperature range of −40°C to +85°C. All electrical characteristics-including 1.225 V ±0.2% output tolerance, 100 ppm/°C temperature coefficient, and 60 μA minimum operating current-are guaranteed across this full range, per the LM4041-N datasheet revision G.
How does the FB pin function in LM4041DIM7X-1.2?
In the fixed-output LM4041DIM7X-1.2, the FB (feedback) pin is unused. Per TI's datasheet, it must either float or be connected to the anode (ground). It is not internally connected to the reference core in the 1.2 V fixed version-only active in adjustable variants like LM4041-N-ADJ. Misconnecting FB can cause instability or incorrect regulation.
Is LM4041DIM7X-1.2 qualified for automotive applications?
The base LM4041DIM7X-1.2 is not automotive-qualified; however, its pin-compatible counterpart LM4041QDIM7X-1.2 is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient). Both share identical electrical specs and SC70-5 packaging-designers targeting automotive cabin or infotainment systems should specify the 'Q' suffix variant to meet qualification requirements.
LM4041DIM7X-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:
- ±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
LM4041DIM7X-1.2 FAQ
1.How can I place an order for LM4041DIM7X-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM7X-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 LM4041DIM7X-1.2 reliable?
The price and inventory of LM4041DIM7X-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 LM4041DIM7X-1.2 is usually 5 days.
3.What payment methods are accepted for LM4041DIM7X-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM7X-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIM7X-1.2?
LM4041DIM7X-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM7X-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 LM4041DIM7X-1.2?
For technical support, including LM4041DIM7X-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM7X-1.2 requirements.
6.How does Aetrix verify that LM4041DIM7X-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041DIM7X-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 LM4041DIM7X-1.2 meets industry standards.
7.What is the process for return or replacement of LM4041DIM7X-1.2?
All LM4041DIM7X-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM7X-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 LM4041DIM7X-1.2 part is unused and in its original packaging.
Return procedure for LM4041DIM7X-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041DIM7X-1.2 Tags
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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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