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Texas Instruments LM4041DIM7X-ADJ
- Part No.:
- LM4041DIM7X-ADJ
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041DIM7X-ADJ.pdf
- Description:
- IC VREF SHUNT ADJ 1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,478
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Product details
Overview
LM4041DIM7X-ADJ from Texas Instruments is a precision micropower adjustable shunt voltage reference in SC70-5 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and stable operation from 60 μA to 12 mA load current - used in high-accuracy ADC/DAC biasing and portable energy metering circuits.
For engineers reviewing the LM4041DIM7X-ADJ datasheet, LM4041DIM7X-ADJ pinout, LM4041DIM7X-ADJ application, or LM4041DIM7X-ADJ equivalent, key selection criteria include its adjustable output (1.24 V to 10 V), no-output-capacitor requirement, low 20 μVrms noise (10 Hz–10 kHz), thermal hysteresis of 0.08%, and automotive-grade qualification (AEC-Q100 Grade 1).
Technical Context
The LM4041DIM7X-ADJ uses a bandgap-based shunt architecture with curvature-corrected temperature drift compensation and Zener-zap trimming at wafer sort to achieve ±0.5% initial accuracy. Its feedback (FB) pin enables precise external resistor-divider programming of output voltage across the full 1.24–10 V range.
It operates without an output capacitor and remains stable with any capacitive load up to 10 nF. The SC70-5 package integrates cathode, anode, FB, and two NC terminals - with FB pin requiring high-impedance connection to maintain reference accuracy and low 150 nA typical input current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, programmable to 10 V via external resistors - sets precision bias point for analog signal chains. |
| Initial Tolerance | ±0.5% at 25°C (C grade) - ensures ≤6.2 mV absolute error at 5 V output, critical for 12-bit+ data acquisition. |
| Temp Coefficient | Max 100 ppm/°C (industrial range) - contributes ≤±6.5 mV drift over −40°C to +85°C at 5 V output. |
| Operating Current | 60–12,000 μA - supports ultra-low-power sensor nodes (60 μA sleep mode) and high-current DAC references (12 mA). |
| Noise (10 Hz–10 kHz) | 20 μVrms - avoids quantization noise floor degradation in 16-bit SAR ADCs and precision instrumentation amplifiers. |
| Dynamic Impedance | 0.3 Ω at 1 mA - maintains tight regulation under fast load transients, e.g., during ADC sampling bursts. |
| Long-Term Stability | 120 ppm (1000 hrs) - guarantees <0.012% output drift over 1 year, suitable for uncalibrated field-deployed meters. |
Pinout & Package
LM4041DIM7X-ADJ is packaged in a 5-pin SC70 (DCK) case measuring 1.25 mm × 2.00 mm, optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Ground reference node | Internally connected to substrate; must be tied to system ground - floating anode causes regulation failure. |
| Cathode (Pin 3) | Shunt current sink / output terminal | Carries total load + reference current; connects to VOUT node and external series resistor in adjustable configuration. |
| FB (Pin 5) | Feedback input | Senses divided output voltage; draws only 150 nA typical - enables high-R divider networks without loading error. |
| NC (Pin 1 & 4) | No-connect terminals | Must remain unconnected or tied to anode; routing traces to these pins risks parasitic coupling and instability. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output range | 1.24 V to 10 V via two-resistor divider - eliminates need for multiple fixed-reference SKUs in multi-voltage systems. |
| No output capacitor required | Stable with 0–10 nF capacitive load - simplifies layout, reduces BOM count, and avoids capacitor aging-induced drift. |
| Low quiescent current | 60 μA minimum operating current - extends battery life in coin-cell-powered IoT sensors beyond 5 years. |
| AEC-Q100 Grade 1 qualified | Rated for −40°C to +125°C ambient - validated for engine control units, ADAS power supplies, and under-hood telemetry. |
| Low thermal hysteresis | 0.08% - ensures repeatable voltage after thermal cycling, essential for calibration-critical test equipment. |
Applications
| Portable Energy Meters | Automotive Battery Monitoring |
|---|---|
Use Scenario: Single-phase smart meters powered by lithium-thionyl chloride cells with 10-year field life. IC Role / Device Role / Timing Role: Shunt reference for 24-bit delta-sigma ADC measuring voltage across shunt resistor. Use Value: 20 μVrms noise and 100 ppm/°C TC ensure <0.1% total measurement error across temperature and lifetime. |
Use Scenario: 12 V battery voltage monitoring in start-stop systems with wide ambient swings (−40°C to +125°C). IC Role / Device Role / Timing Role: Precision reference for microcontroller ADC channel reading battery rail. Use Value: AEC-Q100 Grade 1 rating and 0.08% thermal hysteresis guarantee consistent SOC estimation after cold cranking and hot soak cycles. |
| Industrial Process Transmitters | Medical Wearable Sensors |
Use Scenario: Loop-powered 4–20 mA pressure transmitter with HART modulation, operating at 3.6 V supply. IC Role / Device Role / Timing Role: Adjustable reference setting excitation voltage for bridge sensor and ADC full-scale range. Use Value: 60 μA min current and 1.24–10 V adjustability enable optimal SNR trade-off while staying within 4 mA loop budget. |
Use Scenario: ECG front-end in patch-style wearable with coin-cell battery and 16-bit ADC. IC Role / Device Role / Timing Role: Low-noise bias source for op-amp gain stages and ADC reference input. Use Value: SC70-5 footprint saves board area; 20 μVrms noise prevents ECG waveform distortion below 1 μV amplitude. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431IDBVR | Fixed 1.24 V reference; no adjustability; higher 100 μA min current; 2% initial tolerance. | Limited to single-voltage systems; unsuitable where 5 V or 10 V reference needed. | Select when cost sensitivity outweighs accuracy and flexibility needs; verify stability with target load capacitance. |
| MAX6008AEUR+T | Fixed 2.048 V output; 0.1% initial tolerance; 30 ppm/°C TC; SC70-3 package (no FB pin). | Requires external op-amp for adjustable outputs; better TC but narrower voltage range. | Prefer for ultra-stable 2.048 V references in 12-bit systems; not drop-in for LM4041DIM7X-ADJ's adjustable topology. |
Compared with TLVH431IDBVR and MAX6008AEUR+T, LM4041DIM7X-ADJ uniquely combines programmable output, sub-100 ppm/°C drift, and SC70-5 integration - enabling one-part support for multi-rail calibration without redesigning feedback networks or sacrificing accuracy.
Availability
LM4041DIM7X-ADJ is available at Aetrix Electronics and suitable for portable energy meters, automotive battery monitors, industrial process transmitters, and medical wearable sensors requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4041DIM7X-ADJ 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 family was engineered for space-constrained, high-accuracy applications demanding micropower operation and robust thermal performance - especially in battery-powered instrumentation and safety-critical automotive subsystems.
FAQ
What is the maximum output voltage supported by LM4041DIM7X-ADJ?
The LM4041DIM7X-ADJ supports an adjustable output voltage range from 1.24 V to 10 V, set by external resistive dividers connected to the FB pin. Its absolute maximum cathode-to-anode voltage is 15 V per datasheet Absolute Maximum Ratings - exceeding this risks permanent damage. Operation above 10 V requires verification of power dissipation and thermal limits in the target SC70-5 layout.
Does LM4041DIM7X-ADJ require an output capacitor for stability?
No, LM4041DIM7X-ADJ does not require an output capacitor and is explicitly designed to remain stable with any capacitive load from 0 to 10 nF. This eliminates capacitor-related drift, aging, and board space - a key advantage over many series references. However, large (>100 nF) bulk capacitors near the cathode may introduce startup overshoot and should be evaluated per application.
How does the FB pin function in LM4041DIM7X-ADJ?
The FB (feedback) pin on LM4041DIM7X-ADJ senses the divided output voltage and regulates the cathode current to maintain 1.233 V between FB and anode. It draws only 150 nA typical current, enabling high-value resistor dividers (e.g., 1 MΩ/249 kΩ for 5 V) without significant loading error. The FB pin must never be left floating - it must connect directly to the divider junction or tie to anode if unused (though unused configuration disables adjustability).
Is LM4041DIM7X-ADJ qualified for automotive use?
Yes, LM4041DIM7X-ADJ is AEC-Q100 Grade 1 qualified, rated for −40°C to +125°C ambient operation and validated for automotive applications including battery monitoring, engine control, and ADAS power domains. Its 0.08% thermal hysteresis and 120 ppm long-term stability meet stringent automotive reliability requirements without field recalibration.
What is the minimum operating current for LM4041DIM7X-ADJ?
The LM4041DIM7X-ADJ has a minimum operating current of 60 μA at 25°C, increasing to 65 μA across the full −40°C to +85°C industrial range. Below this threshold, regulation degrades and output voltage collapses. Designers must ensure the sum of load current and reference current (via cathode) stays ≥60 μA - critical for ultra-low-power wake-up circuits and energy-harvesting systems.
LM4041DIM7X-ADJ 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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- 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-ADJ FAQ
1.How can I place an order for LM4041DIM7X-ADJ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM7X-ADJ 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-ADJ reliable?
The price and inventory of LM4041DIM7X-ADJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIM7X-ADJ is usually 5 days.
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4.How is shipping managed for LM4041DIM7X-ADJ?
LM4041DIM7X-ADJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM7X-ADJ 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-ADJ?
For technical support, including LM4041DIM7X-ADJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM7X-ADJ requirements.
6.How does Aetrix verify that LM4041DIM7X-ADJ is sourced from the original manufacturer or authorized distributors?
All LM4041DIM7X-ADJ 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-ADJ meets industry standards.
7.What is the process for return or replacement of LM4041DIM7X-ADJ?
All LM4041DIM7X-ADJ units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM7X-ADJ, 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-ADJ part is unused and in its original packaging.
Return procedure for LM4041DIM7X-ADJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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