Overview
The TLE2426ID, produced by Texas Instruments, is a precision virtual ground device known as a "rail splitter." It is designed to provide a reference voltage equal to one-half the supply voltage, making it essential for signal-conditioning applications that utilize a single power source. This device combines a high-performance, micropower operational amplifier and a precision-trimmed divider on a single silicon chip, ensuring a precise output voltage to input voltage ratio of 0.5. The TLE2426ID is available in various packages, including a space-saving 3-terminal LP package and optional 8-pin packages with a noise-reduction pin.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 4 V to 40 V |
| Supply Current | < 280 µA |
| Output Current Capability | 20 mA (Source and Sink) |
| Output Impedance | 0.0075 Ω (Typical) |
| Output Regulation | -45 µV to +15 µV (Typical) |
| Operating Temperature Range | 0°C to 70°C (C-suffix), -40°C to 85°C (I-suffix), -55°C to 125°C (M-suffix) |
| Package Options | 3-terminal LP, 8-pin SOIC (D) |
Key Features
- Precision virtual ground with output voltage equal to one-half the input voltage
- Micropower operation with typical supply current of 170 µA at 5 V
- High output-current capability: 20 mA source and sink
- Excellent output regulation: -45 µV to +15 µV typical
- Low-impedance output: 0.0075 Ω typical
- Noise reduction pin available in 8-pin packages
- Space-saving 3-terminal LP package and 8-pin SOIC (D) package options
Applications
- Data acquisition front ends
- Analog signal termination
- Precision voltage reference
- Signal-conditioning applications utilizing a single power source
Q & A
- What is the primary function of the TLE2426ID?
The TLE2426ID acts as a precision virtual ground, providing an output voltage that is always equal to one-half the input voltage.
- What is the input voltage range of the TLE2426ID?
The input voltage range is from 4 V to 40 V.
- How much supply current does the TLE2426ID typically draw?
The TLE2426ID draws less than 280 µA of supply current over the full input range.
- What is the output current capability of the TLE2426ID?
The device can source and sink up to 20 mA of current.
- What are the available package options for the TLE2426ID?
The device is available in a 3-terminal LP package and 8-pin SOIC (D) package.
- How does the noise reduction pin improve performance?
The noise reduction pin, available in 8-pin packages, reduces peak-to-peak noise and improves line ripple rejection with the addition of an external capacitor (CNR).
- What are the typical operating temperature ranges for the TLE2426ID?
The operating temperature ranges are 0°C to 70°C (C-suffix), -40°C to 85°C (I-suffix), and -55°C to 125°C (M-suffix).
- What applications is the TLE2426ID suitable for?
The device is suitable for data acquisition front ends, analog signal termination, precision voltage references, and other signal-conditioning applications.
- How does the TLE2426ID improve system accuracy?
The TLE2426ID eliminates a major source of system error by providing a precise virtual ground, ensuring ripple rejection exceeds 12 bits of accuracy.
- What is the initial output tolerance of the TLE2426ID?
The initial output tolerance is better than 1% for single 5-V or 12-V systems and 3.6% over the full 40-V input range.
