Overview
The LM4121AIM5-1.2/NOPB is a high-precision voltage reference IC produced by Texas Instruments. This device provides a fixed and highly accurate 1.25V output voltage, making it suitable for a wide range of power management and control applications. It is known for its excellent voltage accuracy, low noise, and robust performance across temperature extremes.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Reference Voltage | 1.25V | V |
| Initial Accuracy | ±0.2% | % |
| Temperature Coefficient | ±14 ppm/°C (typ), ±50 ppm/°C (max) | ppm/°C |
| Operating Temperature Range | -40°C to +85°C | °C |
| Input Voltage Range | 1.5V to 12V | V |
| Quiescent Current | 275 µA (typ) | µA |
| Output Noise Voltage | 20 µVp-p (0.1Hz to 10Hz), 30 µVrms (10Hz to 10kHz) | µV |
| Package Type | SOT-23-5 | - |
| No. of Pins | 5 | - |
| RoHS Compliance | Yes | - |
Key Features
- Tight ±0.2% voltage tolerance for high accuracy.
- Low temperature coefficient of ±14 ppm/°C (typ) and ±50 ppm/°C (max) for stable operation across temperature.
- Low output noise of 20 µVp-p (0.1Hz to 10Hz) and 30 µVrms (10Hz to 10kHz) for sensitive analog circuits.
- Wide input voltage range of 1.5V to 12V for versatile usage.
- Low quiescent current of 275 µA (typ) for power efficiency.
- Compact SOT-23-5 package for space-constrained designs.
- Enable pin for power-down capability, reducing current to less than 2 µA.
- Source and sink current output capability of ±5 mA.
Applications
- Power supplies: Provides a stable reference voltage for power supply circuits.
- Analog-to-digital converters: Ensures accurate voltage reference for ADC operations.
- Instrumentation and measurement equipment: Used in precision measurement and instrumentation applications.
- Industrial control systems: Suitable for industrial control and automation systems.
- Automotive electronics: Fully specified for automotive applications, ensuring robust performance.
- Portable, battery-powered equipment: Ideal for battery-powered devices due to low operating voltage and current.
- Data acquisition systems: Provides a precise voltage reference for data acquisition applications.
- Test equipment: Used in various test and measurement equipment.
- Medical equipment: Suitable for medical devices requiring high precision and reliability.
Q & A
- What is the reference voltage of the LM4121AIM5-1.2/NOPB?
The reference voltage is 1.25V.
- What is the initial accuracy of the LM4121AIM5-1.2/NOPB?
The initial accuracy is ±0.2%.
- What is the temperature coefficient of the LM4121AIM5-1.2/NOPB?
The temperature coefficient is ±14 ppm/°C (typ) and ±50 ppm/°C (max).
- What is the operating temperature range of the LM4121AIM5-1.2/NOPB?
The operating temperature range is -40°C to +85°C.
- What is the input voltage range of the LM4121AIM5-1.2/NOPB?
The input voltage range is 1.5V to 12V.
- What is the quiescent current of the LM4121AIM5-1.2/NOPB?
The quiescent current is 275 µA (typ).
- What is the output noise voltage of the LM4121AIM5-1.2/NOPB?
The output noise voltage is 20 µVp-p (0.1Hz to 10Hz) and 30 µVrms (10Hz to 10kHz).
- What package type does the LM4121AIM5-1.2/NOPB come in?
The package type is SOT-23-5.
- Is the LM4121AIM5-1.2/NOPB RoHS compliant?
Yes, it is RoHS compliant.
- What are some common applications of the LM4121AIM5-1.2/NOPB?
Common applications include power supplies, analog-to-digital converters, instrumentation and measurement equipment, industrial control systems, and automotive electronics.
