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Analog Devices Inc./Maxim Integrated LM4041AIX3-1.2+T
- Part No.:
- LM4041AIX3-1.2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4041AIX3-1.2+T.pdf
- Description:
- IC VREF SHUNT 0.1% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,552
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Product details
Overview
LM4041AIX3-1.2+T from Maxim Integrated is a precision 1.225V two-terminal shunt voltage reference in SC70-3 package, featuring 0.1% initial accuracy, 100ppm/°C max temperature coefficient, and 60µA–12mA operating current range. It delivers stable reference voltage for ADCs, DACs, and battery-monitoring circuits in space-constrained portable electronics.
For engineers reviewing the LM4041AIX3-1.2+T datasheet, LM4041AIX3-1.2+T pinout, LM4041AIX3-1.2+T application, or LM4041AIX3-1.2+T equivalent, key selection criteria include guaranteed -40°C to +85°C operation, no-output-capacitor stability, low 20µVRMS noise (10Hz–10kHz), and SC70-3 footprint compatibility with high-density PCB layouts.
Technical Context
The LM4041AIX3-1.2+T uses a laser-trimmed bandgap core to maintain 1.225V reverse breakdown voltage across 60µA–12mA shunt current. Its BiCMOS process enables low dynamic impedance (≤1.5Ω at 1mA) and wideband noise of 20µVRMS (10Hz–10kHz).
Pin 3 is unconnected (N.C.) or tied to pin 2 per datasheet; it does not participate in regulation. The device operates without external stabilization capacitors and remains stable under any capacitive load-enabling direct integration into sensitive analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225V ±1.2mV at +25°C - ensures precise biasing for 12-bit+ data converters |
| Initial Accuracy | ±0.1% (max) - supports high-accuracy calibration without trimming |
| Temp Coefficient | 100ppm/°C (max) - limits drift to ±8.5mV over -40°C to +85°C |
| Operating Current | 60µA to 12mA - accommodates ultra-low-power sensors and higher-current references |
| Dynamic Impedance | ≤1.5Ω at 1mA - maintains voltage stability during fast load transients |
| Output Noise | 20µVRMS (10Hz–10kHz) - minimizes added noise in precision measurement front-ends |
| Long-Term Stability | 120ppm (1000h) - ensures reference integrity over product lifetime |
Pinout & Package
LM4041AIX3-1.2+T is housed in a 3-pin SC70-3 package (1.8mm × 1.8mm × 0.9mm), 50% smaller than SOT23-3. Pin 3 is N.C. and must be left floating or connected to pin 2 per datasheet requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Anode / Positive Terminal | Reference output node; connects to cathode of series resistor in shunt configuration |
| 2 (−) | Cathode / Negative Terminal | Ground reference return path; defines 1.225V potential relative to pin 1 |
| 3 (N.C.) | No Connection | Must remain unconnected or tied to pin 2; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | Enables placement in <2mm² board area-critical for wearables and compact IoT nodes |
| No output capacitor required | Eliminates BOM cost and layout risk while ensuring stability with any capacitive load |
| Laser-trimmed bandgap core | Delivers 0.1% initial accuracy without post-assembly calibration |
| Low 20µVRMS broadband noise | Preserves SNR in 16-bit+ SAR ADC reference paths without filtering overhead |
| Guaranteed -40°C to +85°C operation | Validated performance across industrial ambient conditions without derating |
Applications
| Battery Voltage Monitoring | Portable Medical Sensors |
|---|---|
Use Scenario: Real-time Li-ion cell voltage tracking in smart battery packs with microamp-level quiescent current budget. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225V基准 for ADC input scaling and state-of-charge calculation. Use Value: Enables ±0.5% battery voltage accuracy over full temperature range without trimming or external components. | Use Scenario: Powering analog front-end of wearable ECG/PPG modules where size and power are constrained. IC Role / Device Role / Timing Role: Precision voltage reference for instrumentation amplifier gain-setting and ADC reference rail. Use Value: Maintains signal chain accuracy despite 60µA–1mA supply current variation and body-temperature drift. |
| Industrial Data Acquisition | Automotive Cabin Control |
Use Scenario: Reference source for 4–20mA loop-powered transmitters in factory automation systems. IC Role / Device Role / Timing Role: Two-terminal shunt reference regulating loop current via series resistor biasing. Use Value: Delivers 1.225V stability across -40°C to +85°C with ≤100ppm/°C drift-meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Reference for HVAC sensor interface and display backlight dimming control in automotive infotainment panels. IC Role / Device Role / Timing Role: Stable voltage reference for microcontroller ADC inputs monitoring thermistor and potentiometer signals. Use Value: Ensures consistent cabin temperature reporting accuracy despite engine bay thermal cycling and EMI exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5V fixed output; 0.5% initial accuracy; SOT23-3 package; requires minimum 80µA cathode current | Higher output voltage limits use in 1.8V/2.5V systems without level-shifting; less accurate for sub-1% calibration | Select when 2.5V reference is acceptable and tighter tempco is not required |
| ADR3412ARJZ-R7 | 1.2V output; 0.1% initial accuracy; 30ppm/°C tempco; SOT23-3; 300µA typical quiescent current | Lower tempco improves stability over temperature but consumes >5× more current than LM4041AIX3-1.2+T | Select when ultra-low tempco outweighs micropower constraints |
Compared with TLVH431ACDBVR and ADR3412ARJZ-R7, the LM4041AIX3-1.2+T uniquely combines 1.225V output, 0.1% accuracy, 60µA minimum current, and SC70-3 size-making it optimal for space- and power-sensitive 1.2V–1.25V reference needs where low-noise stability is critical.
Availability
LM4041AIX3-1.2+T is available at Aetrix Electronics and suitable for portable medical sensors, battery management systems, and industrial data acquisition requiring stable component supply with guaranteed -40°C to +85°C operation and RoHS-compliant packaging.
Supply support for LM4041AIX3-1.2+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The LM4041 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated systems requiring high initial accuracy and low temperature drift without external compensation.
FAQ
What is the exact output voltage tolerance of LM4041AIX3-1.2+T at +25°C?
The LM4041AIX3-1.2+T has a reverse breakdown voltage of 1.225V with ±1.2mV (±0.1%) tolerance at +25°C, as specified in the Electrical Characteristics table. This tight tolerance enables direct use in high-resolution ADC/DAC reference paths without system-level trimming.
Does LM4041AIX3-1.2+T require an external output capacitor for stability?
No, the LM4041AIX3-1.2+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, eliminating BOM cost and PCB area typically needed for decoupling-confirmed by the "No Output Capacitors Required" feature and stability test data in the datasheet.
What is the maximum operating temperature range for LM4041AIX3-1.2+T?
The LM4041AIX3-1.2+T is rated for operation from -40°C to +85°C, as indicated by the "I" suffix in its ordering code (LM4041AIX3-1.2+T). This grade is distinct from the "E" grade (e.g., LM4041AEX3-1.2+T), which extends to +125°C.
Can pin 3 of LM4041AIX3-1.2+T be left unconnected or must it be tied to pin 2?
Per the Pin Description section, pin 3 of LM4041AIX3-1.2+T is labeled N.C. (No Connection) and must either be left floating or connected to pin 2. It has no internal function, and connecting it to pin 2 is explicitly permitted and electrically safe.
What is the minimum shunt current required for LM4041AIX3-1.2+T to maintain regulation?
The LM4041AIX3-1.2+T requires a minimum shunt current of 60µA to maintain regulation across its full temperature range, as specified in the Electrical Characteristics table under "Minimum Operating Current." Below this, output voltage accuracy degrades beyond guaranteed limits.
LM4041AIX3-1.2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-70, SOT-323
- 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:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
LM4041AIX3-1.2+T FAQ
1.How can I place an order for LM4041AIX3-1.2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041AIX3-1.2+T 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 LM4041AIX3-1.2+T reliable?
The price and inventory of LM4041AIX3-1.2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041AIX3-1.2+T is usually 5 days.
3.What payment methods are accepted for LM4041AIX3-1.2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041AIX3-1.2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041AIX3-1.2+T?
LM4041AIX3-1.2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041AIX3-1.2+T 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 LM4041AIX3-1.2+T?
For technical support, including LM4041AIX3-1.2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041AIX3-1.2+T requirements.
6.How does Aetrix verify that LM4041AIX3-1.2+T is sourced from the original manufacturer or authorized distributors?
All LM4041AIX3-1.2+T 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 LM4041AIX3-1.2+T meets industry standards.
7.What is the process for return or replacement of LM4041AIX3-1.2+T?
All LM4041AIX3-1.2+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4041AIX3-1.2+T, 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 LM4041AIX3-1.2+T part is unused and in its original packaging.
Return procedure for LM4041AIX3-1.2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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