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Analog Devices Inc./Maxim Integrated LM4041BIX3-1.2+T
- Part No.:
- LM4041BIX3-1.2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
LM4041BIX3-1.2+T.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,279
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Product details
Overview
LM4041BIX3-1.2+T from Maxim Integrated is a precision two-terminal shunt voltage reference with 1.225V fixed reverse breakdown voltage, 0.2% initial accuracy, 100ppm/°C max temperature coefficient, and 60µA–12mA operating current range. It serves as a stable voltage reference in space-constrained portable power management circuits.
For engineers reviewing the LM4041BIX3-1.2+T datasheet, LM4041BIX3-1.2+T pinout, LM4041BIX3-1.2+T application, or LM4041BIX3-1.2+T equivalent, key selection criteria include guaranteed -40°C to +85°C operation, SC70-3 package footprint, no output capacitor requirement, and low 20µVRMS noise (10Hz–10kHz).
Technical Context
The LM4041BIX3-1.2+T implements a bandgap-based shunt reference architecture, maintaining a precise 1.225V across its terminals when reverse-biased between 60µA and 12mA. Its internal BiCMOS process enables stable regulation without external capacitance and tolerates any capacitive load.
It operates over -40°C to +85°C with ±2.4mV reverse voltage tolerance at +25°C and ±10.4mV overtemperature tolerance (max ΔT = +65°C). Dynamic impedance is ≤1.5Ω at 1mA/120Hz, ensuring minimal voltage shift under load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225V fixed reverse breakdown voltage - sets precise reference level for ADCs, DACs, and comparators. |
| Initial Accuracy | ±0.2% (±2.4mV at +25°C) - enables high-resolution measurement without calibration. |
| Temp Coefficient | 100ppm/°C max - ensures ≤±0.85% total voltage drift over -40°C to +85°C. |
| Operating Current | 60µA to 12mA - supports ultra-low-power sensor nodes and high-current analog front-ends. |
| Output Noise | 20µVRMS (10Hz–10kHz) - minimizes added noise in precision signal chains. |
| Dynamic Impedance | ≤1.5Ω at 1mA - maintains stable voltage under fast load transients. |
| Package | SC70-3 (1.8mm × 1.8mm) - reduces PCB area by 50% vs. SOT23-3 equivalents. |
Pinout & Package
LM4041BIX3-1.2+T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), rated for -40°C to +85°C operation. Pin 3 is unconnected (N.C.) and must be left floating or tied to Pin 2 per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Reference output node - connects to load or feedback network. |
| 2 (−) | Negative terminal (cathode) | Current sink path - ties to ground or current-setting resistor. |
| 3 (N.C.) | No-connect terminal | Must remain unconnected or shorted to Pin 2 - not used in circuit function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70-3 footprint | 1.8mm × 1.8mm package - saves >50% board area vs. SOT23-3 alternatives. |
| No output capacitor required | Stable with any capacitive load - eliminates BOM cost and layout constraints. |
| Laser-trimmed precision | 0.2% initial accuracy achieved via on-die laser trimming - avoids post-assembly calibration. |
| Low wideband noise | 20µVRMS (10Hz–10kHz) - preserves SNR in high-resolution data acquisition systems. |
| Wide shunt current range | 60µA–12mA operation - supports both micropower sensors and higher-current analog stages. |
Applications
| Battery-Powered Portable Devices | Notebook Computer Power Management |
|---|---|
Use Scenario: Reference for fuel gauges and battery voltage monitors in handheld medical devices and wearables. IC Role / Device Role / Timing Role: Two-terminal shunt reference providing stable 1.225V for ADC input scaling and comparator thresholds. Use Value: Enables accurate state-of-charge estimation down to 60µA quiescent current, extending battery life. | Use Scenario: Voltage reference for VRM feedback loops and system health monitoring in ultrabooks. IC Role / Device Role / Timing Role: Precision shunt reference sourcing stable 1.225V for CPU core voltage sensing. Use Value: Maintains ±0.2% accuracy across -40°C to +85°C ambient, ensuring reliable power sequencing. |
| Industrial Process Sensor Interfaces | Cell Phone Baseband Reference |
Use Scenario: Reference for 4–20mA loop-powered transmitters in factory automation systems. IC Role / Device Role / Timing Role: Shunt reference generating 1.225V for DAC output scaling and current-sense amplifier biasing. Use Value: Delivers <1.5Ω dynamic impedance to reject supply ripple and maintain loop accuracy. | Use Scenario: Reference for audio codec ADCs and RF front-end biasing in LTE smartphones. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying 1.225V to mixed-signal subsystems. Use Value: 20µVRMS noise floor prevents degradation of audio SNR and RF EVM performance. |
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 adjustable output (via resistors); 0.5% initial accuracy; 100ppm/°C tempco; SOT23-3 package. | Requires external resistors to set reference voltage; not pin-compatible; larger minimum cathode current (80µA). | Select when 2.5V or adjustable output is needed and board space allows SOT23-3. |
| MAX6008BAUT12+T | 1.2V fixed output; 0.2% initial accuracy; 75ppm/°C tempco; SOT23-3 package; 50µA–20mA current range. | Lower tempco and wider current range; same accuracy grade but different output voltage (1.2V vs. 1.225V). | Select when tighter thermal drift is critical and 1.2V output suffices for system tolerance budget. |
Compared with TLVH431ACDBVR and MAX6008BAUT12+T, the LM4041BIX3-1.2+T offers exact 1.225V output with SC70-3 footprint and guaranteed stability without external capacitors - making it optimal for space-constrained, fixed-voltage reference designs requiring minimal support components.
Availability
LM4041BIX3-1.2+T is available at Aetrix Electronics and suitable for portable medical devices, notebook computer power monitoring, and industrial sensor interfaces requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
Supply support for LM4041BIX3-1.2+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 and mixed-signal ICs for industrial, automotive, and communications applications.
The LM4041 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated systems where accuracy, low noise, and capacitor-free stability are essential.
FAQ
What is the exact output voltage of the LM4041BIX3-1.2+T?
The LM4041BIX3-1.2+T provides a fixed reverse breakdown voltage of 1.225V at +25°C, with a tolerance of ±2.4mV (±0.2%) at room temperature and ±10.4mV over its full -40°C to +85°C operating range. This value is laser-trimmed and specified in the Electrical Characteristics table of the official datasheet.
Does the LM4041BIX3-1.2+T require an external output capacitor?
No, the LM4041BIX3-1.2+T does not require an external output capacitor for stability. It is designed to remain stable with any capacitive load, including zero capacitance. This eliminates BOM cost and simplifies layout - a key advantage confirmed in the General Description and Applications Information sections.
What is the operating temperature range for the LM4041BIX3-1.2+T?
The LM4041BIX3-1.2+T is rated for operation from -40°C to +85°C. This is explicitly defined in the Ordering Information table, where the "I" suffix denotes the industrial temperature grade. The device is fully specified and guaranteed across this range per its Absolute Maximum Ratings and Electrical Characteristics.
What package type does the LM4041BIX3-1.2+T use?
The LM4041BIX3-1.2+T uses the 3-pin SC70 package (SC70-3), measuring 1.8mm × 1.8mm. This is confirmed in the Ordering Information table and Package Information section, with "X3" in the part number denoting the SC70-3 variant and "+T" indicating lead(Pb)-free/RoHS compliance.
How many pins does the LM4041BIX3-1.2+T have, and what is the function of Pin 3?
The LM4041BIX3-1.2+T has three terminals: Pin 1 (+), Pin 2 (−), and Pin 3 (N.C.). Per the Pin Description table, Pin 3 is designated "No-connect" and must be left floating or connected to Pin 2 - it serves no active circuit function and is not internally bonded.
LM4041BIX3-1.2+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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.2%
- 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
LM4041BIX3-1.2+T FAQ
1.How can I place an order for LM4041BIX3-1.2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041BIX3-1.2+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 LM4041BIX3-1.2+T reliable?
The price and inventory of LM4041BIX3-1.2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041BIX3-1.2+T is usually 5 days.
3.What payment methods are accepted for LM4041BIX3-1.2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041BIX3-1.2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041BIX3-1.2+T?
LM4041BIX3-1.2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041BIX3-1.2+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 LM4041BIX3-1.2+T?
For technical support, including LM4041BIX3-1.2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041BIX3-1.2+T requirements.
6.How does Aetrix verify that LM4041BIX3-1.2+T is sourced from the original manufacturer or authorized distributors?
All LM4041BIX3-1.2+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 LM4041BIX3-1.2+T meets industry standards.
7.What is the process for return or replacement of LM4041BIX3-1.2+T?
All LM4041BIX3-1.2+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4041BIX3-1.2+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 LM4041BIX3-1.2+T part is unused and in its original packaging.
Return procedure for LM4041BIX3-1.2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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