Overview
The TLE2426IDG4, produced by Texas Instruments, is a precision virtual ground device known as the 'Rail Splitter.' This component provides a precise output voltage that is always half the input voltage, making it ideal for creating a stable virtual ground in various electronic circuits. The TLE2426IDG4 combines a high-performance operational amplifier and a precision-trimmed divider on a single silicon chip, ensuring a precise VO/VI ratio of 0.5. It operates over a wide input voltage range of 4 V to 40 V and is available in an 8-pin SOIC package, which includes a noise-reduction pin for enhanced performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VI) | 4 | 40 | V | |
| Output Voltage (VO) | 2 | 20 | V | |
| Output Current | 20 | mA | ||
| Supply Current (No Load) | 170 | 400 | µA | |
| Temperature Coefficient of Output Voltage | 25 | ppm/°C | ||
| Output Impedance | 7.5 | 22.5 | mΩ | |
| Noise Reduction Impedance | 110 | kΩ | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Precision Virtual Ground: Provides an output voltage that is always half the input voltage, ensuring a stable virtual ground.
- High-Performance Operational Amplifier: Combined with a precision-trimmed divider on a single silicon chip for accurate voltage division.
- Low Impedance Output: Capable of sinking and sourcing up to 20 mA of current.
- Micropower Operation: Draws less than 400 µA of supply current over the full input range.
- Noise Reduction: Includes a noise-reduction pin to improve line ripple rejection and reduce peak-to-peak noise with an external capacitor.
- Compact Packaging: Available in an 8-pin SOIC package, saving board space compared to conventional signal ground configurations.
Applications
- Signal Grounding in Analog Circuits: Ideal for creating a stable virtual ground in analog circuits, reducing the need for multiple resistors, capacitors, and voltage references.
- Power Supply Design: Useful in power supply designs where a stable mid-point voltage is required.
- Audio and Instrumentation Equipment: Suitable for applications requiring low noise and high precision, such as audio equipment and instrumentation.
- Industrial and Automotive Systems: Can be used in industrial and automotive systems where a reliable and precise virtual ground is necessary.
Q & A
- What is the input voltage range of the TLE2426IDG4?
The input voltage range of the TLE2426IDG4 is from 4 V to 40 V.
- How much current can the TLE2426IDG4 sink and source?
The TLE2426IDG4 can sink and source up to 20 mA of current.
- What is the typical supply current of the TLE2426IDG4?
The typical supply current of the TLE2426IDG4 is 170 µA to 400 µA over the full input range.
- What is the temperature coefficient of the output voltage?
The temperature coefficient of the output voltage is 25 ppm/°C.
- What package type is the TLE2426IDG4 available in?
The TLE2426IDG4 is available in an 8-pin SOIC package.
- How does the noise-reduction feature work?
The noise-reduction feature works by using a noise-reduction pin and an external capacitor to reduce peak-to-peak noise and improve line ripple rejection.
- What is the operating temperature range of the TLE2426IDG4?
The operating temperature range of the TLE2426IDG4 is from -40°C to 85°C.
- Can the TLE2426IDG4 be used in automotive systems?
Yes, the TLE2426IDG4 can be used in automotive systems due to its reliability and precision.
- How does the TLE2426IDG4 save board space?
The TLE2426IDG4 saves board space by integrating the functionality of multiple components (resistors, capacitors, operational amplifiers, and voltage references) into a single chip.
- What are some common applications of the TLE2426IDG4?
Common applications include signal grounding in analog circuits, power supply design, audio and instrumentation equipment, and industrial systems.
