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Texas Instruments LM4041DIM7-1.2
- Part No.:
- LM4041DIM7-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041DIM7-1.2.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,105
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Product details
Overview
LM4041DIM7-1.2 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 enables accurate voltage setting in space-constrained battery-powered instrumentation and automotive sensor signal conditioning circuits.
For engineers reviewing the LM4041DIM7-1.2 datasheet, LM4041DIM7-1.2 pinout, LM4041DIM7-1.2 application, or LM4041DIM7-1.2 equivalent, key selection criteria include guaranteed 1.225 V output with ±0.2% room-temperature accuracy, SC70-5 footprint compatibility, no-output-capacitor stability, and AEC-Q100 Grade 1 qualification for −40°C to +125°C ambient operation.
Technical Context
The LM4041DIM7-1.2 implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±0.2% initial accuracy. Its low dynamic impedance (≤1.5 Ω at 1 mA) and 20 μVrms wideband noise (10 Hz–10 kHz) support high-precision ADC biasing and DAC reference applications.
Unlike series references, it operates as a two-terminal shunt device requiring only an external current source and load resistor. The SC70-5 package includes dedicated feedback (FB), cathode (K), and anode (A) terminals plus two NC pins - enabling adjustable configurations while maintaining fixed 1.225 V operation when FB is tied to cathode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal, ±0.2% initial tolerance at 25°C (B-grade) |
| Tempco | ≤100 ppm/°C over −40°C to +125°C - ensures ≤±12.3 mV drift across full range |
| Operating Current | 60 μA minimum to 12 mA maximum - supports ultra-low-power and high-current designs |
| Noise (10 Hz–10 kHz) | 20 μVrms - suitable for 16-bit+ data acquisition without added filtering |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - maintains regulation under fast load transients |
| Long-Term Stability | 120 ppm after 1000 hours - predictable aging for mission-critical calibration |
| Thermal Hysteresis | 0.08% - minimal voltage shift after thermal cycling between −40°C and +125°C |
Pinout & Package
LM4041DIM7-1.2 is housed in a 5-pin SC70 package (1.25 mm × 2.00 mm body). Pin 1 = FB (feedback input), Pin 2 = A (anode, typically grounded), Pin 3 = K (cathode, shunt current path and output node), Pins 4 & 5 = NC (no connect, must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (FB) | Feedback input | Enables adjustable output configuration; tied internally to cathode for fixed 1.225 V mode |
| Pin 2 (A) | Anode | Reference ground terminal; must be connected to system ground or current-source return |
| Pin 3 (K) | Cathode | Shunt current sink and output voltage node; connects to load/resistor divider top |
| Pins 4 & 5 (NC) | No connect | Electrically isolated; must remain unconnected or tied to anode per datasheet guidance |
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 bypass caps |
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C ambient operation - suitable for engine control and ADAS modules |
| Low quiescent current | 60 μA minimum operating current - extends battery life in portable gas sensors and wearables |
| SC70-5 footprint | 1.25 mm × 2.00 mm body size - fits high-density PCBs where SOT-23 is too large |
| Tolerates capacitive loads | Unconditionally stable into 10 nF - simplifies interface to SAR ADC sample-and-hold inputs |
Applications
| Portable Medical Sensors | Automotive Cabin Pressure Sensors |
|---|---|
Use Scenario: Battery-powered wearable ECG front-end with 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference for ADC VREF input and op-amp biasing. Use Value: 20 μVrms noise and 100 ppm/°C tempco ensure <0.01% measurement error across body temperature range. |
Use Scenario: HVAC pressure transducer module in vehicle cabin climate control system. IC Role / Device Role / Timing Role: Precision voltage reference for bridge amplifier offset calibration and ADC reference. Use Value: AEC-Q100 Grade 1 rating and 120 ppm long-term stability enable 10-year field reliability without recalibration. |
| Industrial Process Transmitters | Energy Meter Reference Subsystem |
Use Scenario: 4–20 mA loop-powered temperature transmitter with HART modulation. IC Role / Device Role / Timing Role: Shunt reference establishing precise 1.225 V基准 for DAC output scaling and sensor excitation. Use Value: 60 μA min current allows operation below 3.3 V supply while maintaining accuracy under varying loop loads. |
Use Scenario: Class 0.2 polyphase energy meter requiring metrology-grade voltage reference. IC Role / Device Role / Timing Role: Primary shunt reference for 24-bit delta-sigma ADC reference rail and anti-aliasing filter biasing. Use Value: 0.08% thermal hysteresis and 120 ppm long-term drift meet IEC 62053-22 accuracy retention requirements. |
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 | ±0.5% initial tolerance (C-grade) vs. ±0.2% (B-grade); same SC70-5 package and 100 ppm/°C tempco | Lower accuracy acceptable in non-critical industrial controls; not qualified for automotive Grade 1 | Select when cost sensitivity outweighs need for tightest tolerance and automotive qualification |
| TLVH431ACDBVR | Adjustable shunt reference (1.24–18 V); 0.5% initial tolerance; SOT-23-5 package; higher 80 μA min current | Requires external resistors for 1.225 V setting; lacks AEC-Q100 qualification and 20 μVrms low-noise performance | Choose only if adjustable output range is required and automotive qualification is unnecessary |
Compared with LM4041CIM7-1.2, the LM4041DIM7-1.2 offers tighter initial accuracy and automotive qualification; compared with TLVH431ACDBVR, it delivers superior noise performance, lower minimum current, and guaranteed fixed 1.225 V output without external components.
Availability
LM4041DIM7-1.2 is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin pressure sensors, industrial process transmitters, and energy meter reference subsystems requiring stable component supply with guaranteed long-term availability.
Supply support for LM4041DIM7-1.2 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 component validation.
The LM4041-N product line was engineered for space-constrained, high-accuracy applications demanding micropower operation, zero-output-capacitor stability, and robust performance across extended temperature ranges - particularly in automotive, industrial, and portable instrumentation.
FAQ
What is the output voltage tolerance of LM4041DIM7-1.2 at 25°C?
The LM4041DIM7-1.2 has a ±0.2% initial reverse breakdown voltage tolerance at 25°C, corresponding to ±2.45 mV around its nominal 1.225 V output. This B-grade specification is verified during wafer sort using Zener-zap trimming and is documented in Section 6.5 of the SNOS641G datasheet.
Does LM4041DIM7-1.2 require an external output capacitor for stability?
No, the LM4041DIM7-1.2 does not require an external output capacitor. Its internal design ensures unconditional stability with any capacitive load up to 10 nF, eliminating the need for bypass capacitors in most applications - a key advantage over older shunt references like the TL431.
Is LM4041DIM7-1.2 qualified for automotive applications?
Yes, LM4041DIM7-1.2 is AEC-Q100 Grade 1 qualified, rated for −40°C to +125°C ambient temperature operation. It meets automotive reliability requirements including HTOL, temperature cycling, and ESD testing per JS-001 (±2 kV HBM), making it suitable for engine bay and cabin modules.
What package type is used for LM4041DIM7-1.2?
The LM4041DIM7-1.2 uses the SC70-5 surface-mount package with a 1.25 mm × 2.00 mm nominal body size. Pinout is FB (Pin 1), A (Pin 2), K (Pin 3), NC (Pin 4), NC (Pin 5), matching the DCK package variant defined in TI's mechanical drawings.
How does LM4041DIM7-1.2 compare to LM4041AIM7-1.2 in accuracy?
The LM4041AIM7-1.2 offers ±0.1% initial tolerance (A-grade), while LM4041DIM7-1.2 provides ±0.2% (B-grade). Both share identical SC70-5 packaging, 100 ppm/°C tempco, 20 μVrms noise, and AEC-Q100 Grade 1 qualification - making LM4041DIM7-1.2 a cost-optimized alternative where ±0.2% meets system requirements.
LM4041DIM7-1.2 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
LM4041DIM7-1.2 FAQ
1.How can I place an order for LM4041DIM7-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM7-1.2 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 LM4041DIM7-1.2 reliable?
The price and inventory of LM4041DIM7-1.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIM7-1.2 is usually 5 days.
3.What payment methods are accepted for LM4041DIM7-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM7-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIM7-1.2?
LM4041DIM7-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM7-1.2 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 LM4041DIM7-1.2?
For technical support, including LM4041DIM7-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM7-1.2 requirements.
6.How does Aetrix verify that LM4041DIM7-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041DIM7-1.2 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 LM4041DIM7-1.2 meets industry standards.
7.What is the process for return or replacement of LM4041DIM7-1.2?
All LM4041DIM7-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM7-1.2, 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 LM4041DIM7-1.2 part is unused and in its original packaging.
Return procedure for LM4041DIM7-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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