Overview
The LM4121IM5-ADJ/NOPB is a precision bandgap voltage reference IC produced by Texas Instruments. It is available in both fixed and adjustable versions, offering high output voltage accuracy and low temperature drift. This device is particularly suited for applications requiring precise voltage regulation, such as power supplies, analog-to-digital converters, and industrial control systems. The LM4121 operates with input voltages ranging from 1.8V to 12V, consumes a typical supply current of 160 µA, and features a power-down mode that reduces the current to less than 2 µA.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOT-23 (DBV) 5-pin |
| Operating Temperature Range | -40°C to +85°C (Industrial), -40°C to +125°C (Extended) |
| Output Voltage Accuracy | ±0.2% (Grade A), ±0.5% (Standard) |
| Temperature Coefficient | 50 ppm/°C |
| Input Voltage Range | 1.8V to 12V |
| Supply Current | 160 µA (Typ.) |
| Power-Down Current | < 2 µA |
| Output Current Capability | ±5 mA |
| Output Noise | 20 µVp-p (0.1Hz to 10Hz), 30 µVrms (10Hz to 10kHz) |
Key Features
- Small SOT23-5 package for space-constrained designs
- Low voltage operation with input voltages as low as 1.8V
- High output voltage accuracy: ±0.2% (Grade A) and ±0.5% (Standard)
- Low temperature coefficient: 50 ppm/°C
- Source and sink current output: ±5 mA
- Enable pin for power-down capability
- Low noise for sensitive analog circuits
- Wide input voltage range for versatile usage
Applications
- Power supplies
- Analog-to-digital converters
- Instrumentation and measurement equipment
- Industrial control systems
- Automotive electronics
- Battery-powered and portable applications
Q & A
- What is the LM4121IM5-ADJ/NOPB used for? The LM4121IM5-ADJ/NOPB is used as a precision bandgap voltage reference in various applications requiring accurate voltage regulation.
- What are the output voltage options for the LM4121IM5-ADJ/NOPB? The device offers fixed 1.25V and adjustable output voltage options.
- What is the typical supply current of the LM4121IM5-ADJ/NOPB? The typical supply current is 160 µA.
- What is the temperature coefficient of the LM4121IM5-ADJ/NOPB? The temperature coefficient is 50 ppm/°C.
- What is the operating temperature range of the LM4121IM5-ADJ/NOPB? The device operates over the industrial temperature range of -40°C to +85°C and can be specified for an extended range of -40°C to +125°C.
- Does the LM4121IM5-ADJ/NOPB have a power-down feature? Yes, it has an enable pin that allows for power-down mode, reducing the current to less than 2 µA.
- What is the package type of the LM4121IM5-ADJ/NOPB? The device is packaged in a 5-pin SOT-23 (DBV) package.
- Is the LM4121IM5-ADJ/NOPB suitable for battery-powered applications? Yes, it is suitable due to its low operating voltage and low supply current.
- What are the key advantages of the LM4121IM5-ADJ/NOPB? The key advantages include high voltage accuracy, low noise, wide input voltage range, and a compact package.
- Is the LM4121IM5-ADJ/NOPB RoHS-compliant? Yes, the device is RoHS-compliant and lead-free.
