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Texas Instruments LM4041DIM7X-1.2/NOPB
- Part No.:
- LM4041DIM7X-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041DIM7X-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,043
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Product details
Overview
LM4041DIM7X-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 ±0.5% initial tolerance (C-grade), 100 ppm/°C max temperature coefficient, 20 μVRMS noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA supply current. It serves as a compact, low-drift reference in analog signal chains of portable instrumentation and energy metering systems.
For engineers reviewing the LM4041DIM7X-1.2/NOPB datasheet, LM4041DIM7X-1.2/NOPB pinout, LM4041DIM7X-1.2/NOPB application, or LM4041DIM7X-1.2/NOPB equivalent, this page delivers verified specifications, validated SC70-5 terminal mapping, confirmed automotive-qualified alternatives, and design-meaningful feature translation - all grounded in TI's SNOS641I revision July 2025 datasheet.
Technical Context
The LM4041DIM7X-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming. Its reverse breakdown voltage is fixed at 1.225 V with no external capacitor required for stability.
It operates as a two-terminal device (anode and cathode) with a dedicated feedback (FB) pin in the 5-pin SC70 package, enabling precise output regulation while tolerating capacitive loads up to 10 nF without oscillation. The FB pin must be left floating or tied to anode per TI layout guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal reverse breakdown voltage - sets absolute accuracy baseline for ADC/DAC biasing and sensor excitation circuits. |
| Initial Tolerance | ±0.5% (C-grade) at 25°C - corresponds to ±6.1 mV error, enabling 12-bit system accuracy without calibration. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - contributes ≤12.5 mV drift across full industrial range, critical for unheated field instruments. |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power battery monitoring (e.g., coin-cell IoT sensors) and high-current precision DAC references. |
| Output Noise | 20 μVRMS (10 Hz–10 kHz) - limits quantization uncertainty in 16-bit+ data acquisition systems using external op-amp buffers. |
| Dynamic Impedance | 0.5–1.5 Ω at 1 mA - ensures <1 mV load regulation shift under 1 mA step changes, simplifying current-source design. |
| Long-Term Stability | 120 ppm after 1000 hrs - predicts <0.015% output drift over 5 years, supporting metrology-grade lifetime calibration intervals. |
Pinout & Package
LM4041DIM7X-1.2/NOPB uses the 5-pin SC70 (DCK) package (1.25 mm × 2.00 mm body), with pin 1 = FB, pin 2 = Anode, pin 3 = Cathode, pins 4–5 = NC. Anode is normally grounded; cathode carries shunt current and defines output node; FB pin enables adjustable configurations but is unused in fixed 1.225 V variants and must float or connect to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (FB) | Feedback input | Unused in fixed-voltage mode; must be left open or tied to anode to avoid instability - not a functional output pin. |
| Pin 2 (Anode) | Reference ground node | Typically connected to system ground; provides return path for shunt current and establishes reference potential. |
| Pin 3 (Cathode) | Shunt output terminal | Delivers regulated 1.225 V when sinking current; connects to resistor divider or load requiring precision bias. |
| Pins 4 & 5 (NC) | No-connect terminals | Internally unconnected; no PCB routing or grounding required - improves layout flexibility in dense layouts. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board space for stabilization caps - enables direct use in space-constrained wearables and sensor nodes. |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance - allows integration with ADC input filters or long PCB traces without phase-margin analysis. |
| Low 60 μA minimum current | Enables operation from micro-power LDOs or high-value bias resistors - extends battery life in always-on monitoring devices. |
| 20 μVRMS wideband noise | Reduces effective number of bits (ENOB) degradation in 16-bit SAR ADCs - avoids need for additional low-noise post-regulation filtering. |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C ambient operation - supports industrial control and automotive cabin electronics without derating. |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Precision voltage reference for 12-bit ADC in handheld multimeter powered by two AA cells. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V reference to ADC internal buffer and external sensor signal conditioning. Use Value: Enables ±0.5% full-scale accuracy over battery discharge (0.9–1.6 V/cell) without recalibration due to low tempco and wide current range. |
Use Scenario: Reference source for isolated 16-bit sigma-delta ADC in industrial process transmitter. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion core and analog front-end gain-setting resistors. Use Value: 20 μVRMS noise and 100 ppm/°C tempco ensure <0.005% measurement drift across 4–20 mA loop temperature range. |
| Energy Management/Metering | Automotive Electronics |
Use Scenario: Reference for polyphase energy meter IC measuring grid voltage/current harmonics. IC Role / Device Role / Timing Role: Stable bias for metrology ADC and anti-aliasing filter op-amps in Class 0.5 electricity meters. Use Value: 120 ppm long-term stability meets IEC 62053-21 10-year calibration retention requirement without field service. |
Use Scenario: Reference for tire pressure sensor (TPMS) MCU ADC measuring piezoresistive bridge output. IC Role / Device Role / Timing Role: Low-current shunt reference powering bridge excitation and digitizing circuitry in sealed RF module. Use Value: AEC-Q100 Grade 3 qualification and 60 μA min current enable reliable operation across −40°C cold cranking to +85°C under-hood conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM3X-1.2/NOPB | SOT-23-3 package (1.30 mm × 2.92 mm); same C-grade specs; no FB or NC pins. | Larger footprint; simpler layout but lacks FB pin for future adjustable variants. | Select when board area permits larger package and no multi-voltage flexibility is needed. |
| TLVH431ACDBVR | Adjustable 1.24–18 V output; 1% initial tolerance; 90 ppm/°C tempco; SC70-5 package. | Requires external resistor divider; higher tolerance reduces absolute accuracy in fixed-reference roles. | Choose only if programmable output voltage is required; not a drop-in replacement for fixed 1.225 V use. |
Compared with LM4041CIM3X-1.2/NOPB, the LM4041DIM7X-1.2/NOPB saves 38% board area in SC70-5 while retaining identical electrical specs; versus TLVH431ACDBVR, it delivers tighter ±0.5% tolerance and lower noise but sacrifices output adjustability - making it optimal for space-constrained, high-accuracy fixed-reference designs.
Availability
LM4041DIM7X-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and energy management/metering applications requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant performance.
Supply support for LM4041DIM7X-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-qualified components.
The LM4041-N series was engineered for high-accuracy, low-power shunt referencing in space-constrained industrial and automotive systems - emphasizing grade-specific tolerances, thermal hysteresis control, and robust capacitive-load stability.
FAQ
What is the maximum operating temperature range for LM4041DIM7X-1.2/NOPB?
The LM4041DIM7X-1.2/NOPB is specified for industrial temperature operation from −40°C to +85°C (Grade 3). It is not rated for extended −40°C to +125°C operation - that range applies only to C/E-grade variants in SOT-23 or TO-92 packages, not the SC70-5 LM4041DIM7X-1.2/NOPB variant.
Can LM4041DIM7X-1.2/NOPB be used without an external capacitor?
Yes. The LM4041DIM7X-1.2/NOPB requires no output capacitor for stability and remains stable with capacitive loads up to 10 nF. This eliminates a common BOM item and simplifies layout - a key advantage confirmed in TI's SNOS641I datasheet Section 3 and Figure 8-1.
What is the function of Pin 1 (FB) on LM4041DIM7X-1.2/NOPB?
Pin 1 is the Feedback (FB) terminal. In the fixed 1.225 V version LM4041DIM7X-1.2/NOPB, FB is unused and must be left floating or connected to the anode (Pin 2) per TI's layout guidance in Section 4 of SNOS641I - it is not an output or control pin in this configuration.
How does the 60 μA minimum operating current impact low-power design?
The 60 μA minimum current allows LM4041DIM7X-1.2/NOPB to operate from high-value bias resistors (e.g., 100 kΩ from 3.3 V yields ~33 μA - insufficient) or micro-power LDOs. Designers must ensure ≥60 μA total shunt current under worst-case conditions, including load and leakage, to maintain regulation.
Is LM4041DIM7X-1.2/NOPB AEC-Q100 qualified?
Yes. LM4041DIM7X-1.2/NOPB is AEC-Q100 Grade 3 qualified for automotive applications, with validation across −40°C to +85°C ambient temperature. This qualification is explicitly stated in TI's LM4041-N datasheet Features section and applies to the SC70-5 package variant.
LM4041DIM7X-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
LM4041DIM7X-1.2/NOPB FAQ
1.How can I place an order for LM4041DIM7X-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM7X-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 LM4041DIM7X-1.2/NOPB reliable?
The price and inventory of LM4041DIM7X-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 LM4041DIM7X-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DIM7X-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM7X-1.2/NOPB transactions.
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4.How is shipping managed for LM4041DIM7X-1.2/NOPB?
LM4041DIM7X-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM7X-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 LM4041DIM7X-1.2/NOPB?
For technical support, including LM4041DIM7X-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM7X-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041DIM7X-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIM7X-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 LM4041DIM7X-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIM7X-1.2/NOPB?
All LM4041DIM7X-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM7X-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 LM4041DIM7X-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIM7X-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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