Overview
The LM4050AIM3-2.5/NOPB, produced by Texas Instruments, is a precision micropower curvature-corrected bandgap shunt voltage reference. This component is designed for high accuracy and stability, making it suitable for a variety of applications requiring precise voltage referencing. It is available in the compact SOT-23 surface-mount package, which is ideal for space-critical designs. The LM4050-N series offers several fixed reverse breakdown voltages, including 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V, catering to different application needs.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Output Voltage Tolerance (A Grade, 25°C) | ±0.1% | % | TJ = 25°C |
| Output Voltage Options | 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, 10 V | V | - |
| Operating Current Range | 60 µA to 15 mA | A | - |
| Industrial Temperature Range | -40°C to 85°C | °C | - |
| Extended Temperature Range | -40°C to 125°C | °C | - |
| Temperature Coefficient | 50 ppm/°C (max) | ppm/°C | - |
| Output Noise (10 Hz to 10 kHz) | 41 µVrms (typical) | µVrms | - |
| Package Type | SOT-23 | - | - |
| Thermal Resistance (RθJA) | 326°C/W | °C/W | Board mounted |
Key Features
- Precision Voltage Reference: Offers high accuracy with output voltage tolerances as low as ±0.1% for the A grade at 25°C.
- Low Power Consumption: Operates with a wide current range from 60 µA to 15 mA, making it suitable for low-power applications.
- Compact Package: Available in the SOT-23 surface-mount package, ideal for space-critical designs.
- No Output Capacitor Required: Stable operation without the need for an external capacitor.
- Tolerates Capacitive Loads: Can handle capacitive loads without compromising stability.
- Low Temperature Coefficient: Maximum temperature coefficient of 50 ppm/°C ensures minimal drift over temperature.
- Low Output Noise: Typical output noise of 41 µVrms from 10 Hz to 10 kHz.
Applications
- Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs): The LM4050-N is particularly useful for ADCs and DACs requiring precise voltage references, such as in 12-bit converters where the 4.096 V or 8.192 V options can provide appropriate LSB values.
- Voltage Regulation: Can be used in shunt regulator applications to provide a stable voltage reference.
- Bounded Amplifiers: Useful in designs where the output voltage needs to be bounded to prevent saturation-induced delays and damage to succeeding stages.
- Dual Current Sources: Can be part of a circuit to generate positive and negative current sources.
- General Precision Voltage Referencing: Suitable for any application requiring a stable and precise voltage reference.
Q & A
- What is the typical output voltage tolerance of the LM4050-N at 25°C for the A grade?
The typical output voltage tolerance is ±0.1% at 25°C for the A grade.
- What are the available output voltage options for the LM4050-N?
The available output voltage options are 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V.
- What is the operating current range of the LM4050-N?
The operating current range is from 60 µA to 15 mA.
- What is the industrial temperature range of the LM4050-N?
The industrial temperature range is -40°C to 85°C, with an extended range of -40°C to 125°C.
- Does the LM4050-N require an external capacitor for stability?
No, the LM4050-N does not require an external capacitor for stability, although a bypass capacitor can be used if necessary.
- What is the typical output noise of the LM4050-N?
The typical output noise is 41 µVrms from 10 Hz to 10 kHz.
- What is the package type of the LM4050-N?
The package type is SOT-23.
- How does the LM4050-N handle capacitive loads?
The LM4050-N can handle capacitive loads without compromising stability.
- What is the maximum temperature coefficient of the LM4050-N?
The maximum temperature coefficient is 50 ppm/°C.
- Can the LM4050-N be used in automotive applications?
Yes, the LM4050-N-Q1 is AEC-Q100 Grade 1 qualified and suitable for automotive applications.
