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Texas Instruments LM4041CIM7-ADJ
- Part No.:
- LM4041CIM7-ADJ
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041CIM7-ADJ.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,786
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Product details
Overview
LM4041CIM7-ADJ from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23-3 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, 20 μVRMS wideband noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA over −40°C to +125°C. It enables accurate voltage setting in low-power analog front-ends and battery-powered sensor signal chains.
For engineers reviewing the LM4041CIM7-ADJ datasheet, LM4041CIM7-ADJ pinout, LM4041CIM7-ADJ application, or LM4041CIM7-ADJ equivalent, this page provides verified specifications, validated pin functions for the SOT-23-3 ADJ variant, confirmed automotive-grade thermal performance, and real-world selection guidance against functionally comparable alternatives.
Technical Context
The LM4041CIM7-ADJ operates as a two-terminal shunt reference with feedback (FB) pin enabling adjustable output via external resistor divider. Its bandgap core with curvature correction ensures monotonic temperature behavior across −40°C to +125°C, and Zener-zap trimming achieves ±0.5% initial accuracy at 25°C.
It requires no output capacitor, tolerates capacitive loads up to 10 nF, and maintains <1.5 mV load regulation (60 μA–1 mA) and <6 mV (1–12 mA) across temperature. Dynamic impedance is 0.3 Ω at VOUT = VREF, rising to 2 Ω at 10 V, supporting stable closed-loop regulation in precision DAC buffers and ADC reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, VOUT = 5 V - sets precise division ratio for adjustable output |
| Initial Tolerance | ±6.2 mV (±0.5%) at 25°C - enables <0.1% system-level voltage accuracy without calibration |
| Temp Coefficient | ±100 ppm/°C max (−40°C to +125°C) - limits drift to ±12.4 mV over full range at 5 V output |
| Operating Current | 60 μA min to 12 mA max - supports ultra-low-power sensor nodes and high-current reference buffers |
| Noise (10 Hz–10 kHz) | 20 μVRMS - preserves SNR in 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.3 Ω at VOUT = VREF; 2 Ω at 10 V - ensures minimal output perturbation under dynamic load steps |
| Feedback Current | 60–100 nA typical - allows high-impedance resistor dividers (>1 MΩ) without significant error |
Pinout & Package
SOT-23-3 package (DBZ), body size 1.30 mm × 2.92 mm, rated for −40°C to +125°C extended temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference terminal | Must be connected to system ground; serves as return path for shunt current and FB network |
| Cathode (Pin 2) | Output and current sink | Delivers regulated voltage; sinks all current from external supply through load/resistor divider |
| FB (Pin 1) | Adjustable reference input | High-impedance node (≤100 nA) that sets output voltage via external R1/R2 divider per VOUT = VREF(1 + R1/R2) |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-constrained PCB layouts without stability-compromising bypass components |
| Tolerates capacitive loads up to 10 nF | Supports filtering at reference output without risk of oscillation in ADC/DAC reference paths |
| Reverse breakdown voltage options: fixed 1.225 V or adjustable | LM4041CIM7-ADJ provides design flexibility-set any VOUT from 1.24 V to 10 V using two external resistors |
| Low temperature coefficient (100 ppm/°C max) | Maintains <±0.12% output error over full industrial-extended range, critical for automotive and metering applications |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to +125°C), including thermal hysteresis ≤0.08% |
Applications
| Battery-Powered Sensor Node | Precision Data Acquisition System |
|---|---|
Use Scenario: Low-power environmental sensor (temperature/humidity) with 16-bit SAR ADC powered by coin cell. IC Role / Device Role / Timing Role: Adjustable shunt reference providing stable 2.5 V ADC reference voltage, trimmed via onboard microcontroller. Use Value: Enables <±0.5 LSB integral nonlinearity at 25°C and <±1 LSB over −25°C to +85°C, extending battery life via 60 μA minimum operating current. |
Use Scenario: Industrial 4–20 mA transmitter with isolated 24-bit ΣΔ ADC and HART modulation. IC Role / Device Role / Timing Role: Primary reference for ADC and DAC sections, configured at 4.096 V for optimal code utilization. Use Value: 20 μVRMS noise and <6 mV load regulation ensure <10 ppm measurement repeatability; AEC-Q100 qualification supports harsh plant-floor environments. |
| Automotive Cabin Control Unit | Energy Meter Reference Subsystem |
Use Scenario: HVAC control module requiring calibrated thermistor readings across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Shunt reference for ratiometric thermistor bridge excitation and ADC reference, sharing same precision source. Use Value: ±100 ppm/°C tempco and 0.08% thermal hysteresis eliminate calibration drift between cold-start and hot-soak conditions. |
Use Scenario: Class 0.2 smart electricity meter with metrology-grade ADC and anti-tampering monitoring. IC Role / Device Role / Timing Role: Secondary reference for tamper-detection comparators and auxiliary ADC channels. Use Value: 120 ppm long-term stability (1000 hrs) and ±0.5% initial tolerance meet IEC 62053-21 accuracy requirements without periodic recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Fixed 2.495 V reference; higher 2.5 mA min cathode current; 0.2 Ω dynamic impedance | Lacks adjustability; requires external op-amp for variable output; better suited for power-supply feedback | Select when fixed 2.5 V output suffices and higher current capability is needed; not drop-in for LM4041CIM7-ADJ's low-IQ use cases |
| MAX6008AEUR+T | Fixed 1.25 V output; 35 ppm/°C tempco; 15 μVRMS noise; SC70-3 package | No adjustable option; tighter tempco but narrower voltage range; lower noise floor | Choose for ultra-low-noise, fixed-voltage applications where SC70 size is preferred and 1.25 V matches system needs |
Compared with TL431CDBZR and MAX6008AEUR+T, the LM4041CIM7-ADJ uniquely combines adjustable output (1.24–10 V), ultra-low 60 μA operating current, and AEC-Q100 Grade 1 qualification-making it optimal for automotive and portable precision systems requiring flexible, low-power voltage setting.
Availability
LM4041CIM7-ADJ is available at Aetrix Electronics and suitable for battery-powered equipment, precision data-acquisition systems, and automotive electronics requiring stable component supply across extended temperature ranges.
Supply support for LM4041CIM7-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 reliability validation.
The LM4041-N series was developed to deliver high-accuracy, low-power shunt references for space-constrained and thermally demanding applications-including automotive cabin controls, portable instrumentation, and energy metering-where traditional three-terminal references add layout complexity.
FAQ
What is the maximum output voltage supported by the LM4041CIM7-ADJ?
The LM4041CIM7-ADJ supports an adjustable output voltage range from 1.24 V to 10 V, determined by the external resistor divider connected to the FB pin. This range is specified in the Electrical Characteristics table (Section 5.8) under "Output voltage" with test condition VREF ≤ VOUT ≤ 10 V. Operation beyond 10 V risks exceeding absolute maximum ratings and is not guaranteed.
Does the LM4041CIM7-ADJ require an external capacitor for stability?
No, the LM4041CIM7-ADJ does not require an external output capacitor for stability. Its internal architecture eliminates the need for stabilization capacitance while maintaining robustness against capacitive loads up to 10 nF-confirmed in the Features section and validated in the Typical Characteristics curves of the official TI datasheet for LM4041CIM7-ADJ.
What is the feedback pin (FB) input bias current specification for LM4041CIM7-ADJ?
The FB pin input bias current for LM4041CIM7-ADJ is 60–100 nA typical at 25°C (C grade), with a maximum of 120 nA over −40°C to +125°C. This low leakage enables use of high-value resistor dividers (e.g., 1 MΩ + 1 MΩ for 2.5 V output) without introducing measurable error-critical for minimizing power consumption in battery-operated designs.
Is the LM4041CIM7-ADJ qualified for automotive applications?
Yes, the LM4041CIM7-ADJ is AEC-Q100 Grade 1 qualified, certified for ambient operating temperatures from −40°C to +125°C. This qualification covers thermal hysteresis (≤0.08%), long-term stability (120 ppm/1000 hrs), and ESD robustness (±2 kV HBM), making it suitable for engine control modules, ADAS sensors, and cabin electronics per automotive reliability standards.
How does the LM4041CIM7-ADJ achieve its ±0.5% initial voltage tolerance?
The LM4041CIM7-ADJ achieves ±0.5% initial tolerance (±6.2 mV at 5 V) through wafer-level Zener-zap trimming of the bandgap reference core. This laser-based calibration occurs during final test and is documented in Section 5.8 of the TI datasheet, where LM4041CIM7-ADJ is explicitly listed under C-grade specifications with ±6.2 mV tolerance at 25°C and 100 μA test current.
LM4041CIM7-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:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041CIM7-ADJ FAQ
1.How can I place an order for LM4041CIM7-ADJ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM7-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 LM4041CIM7-ADJ reliable?
The price and inventory of LM4041CIM7-ADJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM7-ADJ is usually 5 days.
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4.How is shipping managed for LM4041CIM7-ADJ?
LM4041CIM7-ADJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM7-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 LM4041CIM7-ADJ?
For technical support, including LM4041CIM7-ADJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM7-ADJ requirements.
6.How does Aetrix verify that LM4041CIM7-ADJ is sourced from the original manufacturer or authorized distributors?
All LM4041CIM7-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 LM4041CIM7-ADJ meets industry standards.
7.What is the process for return or replacement of LM4041CIM7-ADJ?
All LM4041CIM7-ADJ units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM7-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 LM4041CIM7-ADJ part is unused and in its original packaging.
Return procedure for LM4041CIM7-ADJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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