LM4041QCIM3X-1.2NO Texas Instruments Power Supply (SOT23 (3-Pin)) In Stock
Texas Instruments LM4041QCIM3X-1.2NO is a precision micro-power two-terminal shunt voltage reference with a nominal 1.225 V output (1.2066 V to 1.2434 V range) in a 3-pin SOT-23 package. It delivers stable reference performance in automotive and industrial designs with minimal quiescent current draw. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LM4041QCIM3X-1.2NO Datasheet PDF
- Category
- Power Supply
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Precision 1.225 V nominal shunt voltage reference with tight ±1.5% output tolerance (1.2066 V to 1.2434 V) for accurate ADC and DAC bias
- Two-terminal micro-power architecture eliminating the need for separate enable or shutdown pins, simplifying always-on reference circuits
- Compact 3-pin SOT-23 package minimizing PCB footprint in battery-powered sensor nodes and portable instruments
- RoHS-compliant Pb-free JESD-609 e3 construction rated for automotive and industrial grade environmental requirements
Applications
The LM4041QCIM3X-1.2NO serves as a stable 1.225 V bias reference in ADC input voltage dividers, battery fuel-gauge comparators, and low-power sensor front-ends where supply headroom is limited. Its two-terminal shunt architecture makes it a direct drop-in replacement for mechanical trimmer-based references in precision instrumentation without redesigning the feedback network. Automotive ECU designers use it to maintain accurate threshold voltages across the -40°C to +125°C operating range required by AEC-Q100 automotive qualification.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 1.2434V |
| Output Voltage-Min | 1.2066V |
| Output Voltage-Nom | 1.225V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 100ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | NO |
| Voltage Tolerance-Max | 0.5% |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4041QCIM3X-1.2NO:
Voltage Reference, 1 Output, 1.225V, BIPolar, PDSO3
Two Terminal Voltage Reference, 1 Output, 1.225V, Trim/Adjustable, BIPolar, PDSO3
Frequently Asked Questions
How tight is the output voltage accuracy of LM4041QCIM3X-1.2NO, and what does that mean for 12-bit ADC applications?
The LM4041QCIM3X-1.2NO guarantees a nominal 1.225 V output within a 1.2066 V to 1.2434 V window, representing approximately ±1.5% initial tolerance. For a 12-bit ADC with 4096 counts referenced to 1.225 V, this tolerance corresponds to roughly ±61 LSB maximum reference error before any system calibration, which is acceptable in many industrial measurement chains and can be trimmed to near zero with a one-point calibration routine stored in MCU flash.
In what automotive sensor conditioning scenarios does the LM4041QCIM3X-1.2NO's two-terminal shunt topology simplify the circuit?
Throttle position sensors, manifold pressure transducers, and battery state-of-charge monitors in automotive ECUs benefit from the two-terminal shunt topology because it requires only a single series resistor to set the shunt current, eliminating a dedicated voltage regulator and its compensation capacitors. The device maintains the 1.225 V reference down to micro-ampere load currents across -40°C to +125°C, satisfying AEC-Q100 Grade 1 automotive temperature requirements without additional thermal derating components.
For a compact wearable or IoT sensor node, how does the SOT-23 package size of LM4041QCIM3X-1.2NO compare to larger reference packages?
The 3-pin SOT-23 package measures approximately 2.9 mm × 1.6 mm, occupying roughly 4.6 mm² of PCB area—several times smaller than 8-pin SOIC references that offer similar accuracy but require more board space. In wearable health monitors and IoT edge nodes where PCB area budgets under 200 mm² are common, selecting the SOT-23 LM4041QCIM3X-1.2NO over a TO-92 or SOIC-8 shunt reference frees space for additional sensor ICs or antenna ground planes without sacrificing the 1.225 V reference stability.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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