Overview
The LM4128AMF-2.5/NOPB is a precision micropower series voltage reference from Texas Instruments. This component is designed for space-critical applications and is available in the SOT-23 surface-mount package. It offers high accuracy and stability, making it ideal for various electronic systems, particularly those requiring low power consumption and high precision voltage referencing.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage Initial Accuracy | A Grade | -0.1% | - | +0.1% | % |
| Temperature Coefficient | A, B Grades | - | 75 | - | ppm/°C |
| Supply Current | - | 60 | - | 100 | µA |
| Supply Current in Shutdown | EN = 0V | 3 | - | 7 | µA |
| Maximum Load Current | - | - | - | 20 | mA |
| Junction Temperature Range | - | -40°C | - | +125°C | °C |
| Dropout Voltage | ILOAD = 10 mA | - | - | 400 mV | mV |
| Output Noise Voltage | 0.1 Hz to 10 Hz | - | 275 | - | µVPP |
Key Features
- High Accuracy: Output voltage initial accuracy as low as 0.1% for A grade devices.
- Low Temperature Coefficient: 75 ppm/°C for A and B grades.
- Low Supply Current: 60 µA typical, with a shutdown mode current of 3 µA.
- High Output Current: Up to 20 mA.
- Low Dropout Voltage: 400 mV at 10 mA load current.
- Stable with Capacitive Loads: Stable with up to 10 µF capacitive loads.
- Enable Pin: Allows for a shutdown mode.
- Custom Voltage Options: Available from 1.8V to 4.096V.
- Low ESR Ceramic Capacitors Compatibility: Stable with low ESR ceramic capacitors.
Applications
- Battery-Powered Devices: Ideal due to low quiescent current and low dropout voltage.
- Portable Electronics: Suitable for space-critical and power-efficient designs.
- Industrial Automation: Used in precision voltage referencing for various industrial applications.
- Medical Devices: High accuracy and stability make it suitable for medical equipment.
- Aerospace and Defense: Reliable performance over a wide temperature range.
Q & A
- What is the output voltage initial accuracy of the LM4128AMF-2.5/NOPB?
The output voltage initial accuracy is as low as 0.1% for A grade devices.
- What is the typical supply current of the LM4128AMF-2.5/NOPB?
The typical supply current is 60 µA.
- What is the maximum load current the LM4128AMF-2.5/NOPB can handle?
The maximum load current is 20 mA.
- What is the junction temperature range of the LM4128AMF-2.5/NOPB?
The junction temperature range is -40°C to +125°C.
- Is the LM4128AMF-2.5/NOPB stable with capacitive loads?
Yes, it is stable with up to 10 µF capacitive loads.
- What is the dropout voltage of the LM4128AMF-2.5/NOPB at 10 mA load current?
The dropout voltage is 400 mV at 10 mA load current.
- Does the LM4128AMF-2.5/NOPB have an enable pin?
Yes, it has an enable pin that allows for a shutdown mode.
- What are the available output voltage options for the LM4128 series?
The available output voltage options range from 1.8V to 4.096V.
- Is the LM4128AMF-2.5/NOPB compatible with low ESR ceramic capacitors?
Yes, it is stable with low ESR ceramic capacitors.
- What is the typical output noise voltage of the LM4128AMF-2.5/NOPB?
The typical output noise voltage is 275 µVPP from 0.1 Hz to 10 Hz.
