Overview
The LM4040AIM3X-2.5 from Texas Instruments is a precision micropower shunt voltage reference designed for space-critical applications. It is available in a small SOT-23 (DBZ) surface-mount package with 3 pins. This device is part of the LM4040-N series, which offers high accuracy and stability over a wide range of operating temperatures and currents. The LM4040AIM3X-2.5 is particularly suited for applications requiring a fixed reverse breakdown voltage of 2.5V, with no need for an external stabilizing capacitor, making it easy to integrate into various designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reverse Breakdown Voltage | 2.5 | V |
| Output Voltage Tolerance (A Grade, 25°C) | ±0.1% | |
| Low Output Noise (10Hz to 10kHz) | 35µVrms | |
| Operating Current Range | 60µA to 15mA | |
| Industrial Temperature Range | −40°C to +85°C | |
| Extended Temperature Range | −40°C to +125°C | |
| Temperature Coefficient | 100ppm/°C | |
| Package Type | SOT-23 (DBZ) | |
| Pins | 3 |
Key Features
- LM4040-N-Q1 AEC Q-100 qualified for automotive applications
- Extended Grade 1: −40°C to +125°C, TA; Industrial Grade 3: −40°C to +85°C, TA
- Small packages: SOT-23, TO-92, and SC70
- No output capacitor required
- Tolerates capacitive loads
- Fixed reverse breakdown voltages of 2.048V, 2.5V, 3V, 4.096V, 5V, 8.192V, and 10V
- Low dynamic impedance and stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents
Applications
- Field Transmitters
- Energy Infrastructure
- Automotive systems (due to AEC Q-100 qualification)
- Space-critical applications requiring high precision voltage references
Q & A
- What is the reverse breakdown voltage of the LM4040AIM3X-2.5?
The reverse breakdown voltage of the LM4040AIM3X-2.5 is 2.5V.
- What is the output voltage tolerance at 25°C for the A Grade LM4040AIM3X-2.5?
The output voltage tolerance at 25°C for the A Grade is ±0.1%.
- What is the operating current range of the LM4040AIM3X-2.5?
The operating current range is from 60µA to 15mA.
- Does the LM4040AIM3X-2.5 require an external stabilizing capacitor?
No, the LM4040AIM3X-2.5 does not require an external stabilizing capacitor.
- What are the available package types for the LM4040-N series?
The LM4040-N series is available in SOT-23, TO-92, and SC70 packages.
- What is the temperature coefficient of the LM4040AIM3X-2.5?
The temperature coefficient is 100ppm/°C.
- Is the LM4040AIM3X-2.5 suitable for automotive applications?
- What is the typical low output noise of the LM4040AIM3X-2.5?
The typical low output noise is 35µVrms from 10Hz to 10kHz.
- What are some common applications of the LM4040AIM3X-2.5?
Common applications include field transmitters, energy infrastructure, and space-critical applications.
- What is the industrial temperature range of the LM4040AIM3X-2.5?
The industrial temperature range is −40°C to +85°C.
