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The LM4120AIM5X-4.1/NOPB is a high-precision, low-power, series voltage reference from Texas Instruments, offering a fixed 4.096V output with exceptional accuracy and stability . This device combines a low temperature coefficient, low noise performance, and wide input voltage range in a compact SOT-23-5 package, making it ideal for precision data acquisition systems, industrial instrumentation, and battery-powered equipment requiring a stable, accurate reference voltage . With its ability to operate from input voltages as low as 2V and source up to 5mA of output current, it provides a versatile solution for a wide range of precision analog applications .
Category:Integrated Circuits (ICs);Power Management (PMIC);Voltage Reference
Manufacturer:Texas Instruments
Packaging:Tape & Reel (TR)
Voltage - Output (Min/Fixed):4.096V
Current - Output:5 mA
Tolerance:±0.2%
Temperature Coefficient:50ppm/°C
Noise - 0.1Hz to 10Hz:20µVp-p
Noise - 10Hz to 10kHz:36µVp-p
Voltage - Input:2V ~ 12V
Current - Supply:275µA
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:SC-74A, SOT-753
Supplier Device Package:SOT-23-5
Base Product Number:LM4120
High Initial Accuracy: ±0.2% maximum initial tolerance ensures precise output voltage without requiring external calibration, simplifying system design and improving measurement accuracy .
Low Temperature Coefficient: 50 ppm/°C maximum drift over the entire -40°C to 85°C temperature range maintains voltage stability across varying environmental conditions, critical for precision industrial and automotive applications .
Low Noise Performance: 20 µVp-p noise (0.1Hz to 10Hz) and 36 µVp-p noise (10Hz to 10kHz) minimize signal contamination in sensitive analog circuits such as ADCs, DACs, and sensor interfaces .
Wide Input Voltage Range: Operates from 2V to 12V, allowing direct connection to unregulated supplies or battery voltages while maintaining precise output regulation .
Low Supply Current: 275 µA typical quiescent current minimizes power consumption in battery-powered and portable applications, extending system runtime .
Excellent Line and Load Regulation: 50 ppm/V line regulation and 30 ppm/mA load regulation ensure output stability despite variations in input voltage or load current .
Stable with Capacitive Loads: Designed to drive capacitive loads up to 10 µF without oscillation, simplifying output filtering and decoupling .
Short-Circuit Protection: Built-in current limiting protects the device during output short-circuit conditions .
Data Acquisition Systems: Provides a precise reference voltage for ADCs and DACs in industrial data loggers, multichannel data acquisition cards, and precision measurement instruments, ensuring accurate conversion results .
Industrial Process Control: Serves as a stable reference for sensor excitation, setpoint generation, and comparator thresholds in PLCs, temperature controllers, and pressure transmitters .
Battery-Powered Instruments: Powers precision analog circuits in portable multimeters, handheld calibrators, and field instruments where low power consumption and high accuracy are essential .
Medical Devices: Supplies reference voltage for patient monitoring equipment, diagnostic instruments, and portable medical devices requiring reliable, accurate measurements .
Test and Measurement Equipment: Used in oscilloscopes, spectrum analyzers, and signal generators for calibration, gain setting, and threshold generation circuits .
Power Supply Monitoring: Provides reference voltage for voltage supervisors, power supply monitors, and under-voltage lockout circuits requiring precise threshold detection .
Automotive Electronics: Applied in battery monitoring systems, sensor interfaces, and infotainment modules requiring stable reference voltages over extended temperature ranges .
The Texas Instruments LM4120AIM5X-4.1/NOPB is a high-precision series voltage reference that combines ±0.2% accuracy, 50 ppm/°C temperature stability, and low noise performance in a compact SOT-23-5 package. Its wide 2V to 12V input range, 5mA output capability, and low 275 µA supply current make it an ideal choice for data acquisition systems, industrial instrumentation, medical devices, and battery-powered applications requiring a stable, accurate 4.096V reference with minimal power consumption and excellent long-term reliability .
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