Overview
The TLE2426CDRG4, produced by Texas Instruments, is a precision virtual ground component known as the "rail splitter." This device provides a reference voltage that is always equal to one-half the input voltage, making it ideal for signal-conditioning applications that require a precise analog signal ground. The TLE2426 combines a high-performance, micropower operational amplifier and a precision-trimmed divider on a single silicon chip, ensuring a precise VO/VI ratio of 0.5 while sinking and sourcing current.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 4 V to 40 V |
| Output Voltage Regulation | −0.102 ± 0.7 mV (sinking), 0.049 ± 0.5 mV (sourcing) |
| Output Current Capability | 20 mA (sink and source) |
| Supply Current | 170 µA (typ) at VI = 5 V, 400 µA (max) over full range |
| Output Impedance | 0.0075 Ω (typ) |
| 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 | TO-226AA, SOIC (D), PDIP (P) |
| Noise Reduction | Peak-to-peak noise reduction with external capacitor (CNR) |
Key Features
- Precision virtual ground with VO/VI ratio of 0.5
- Micropower operation with low supply current
- High output-current capability: 20 mA sink and source
- Excellent output regulation and low output impedance
- Noise reduction pin available in some packages
- Compact 3-terminal LP package and 8-pin packages for increased performance
- High ripple rejection exceeding 12 bits of accuracy
Applications
- Data acquisition front ends
- Analog signal termination
- Precision voltage reference
- Signal-conditioning applications requiring a single power source
Q & A
- What is the primary function of the TLE2426CDRG4? The TLE2426CDRG4 acts as a precision virtual ground, providing an output voltage that is always half the input voltage.
- What is the input voltage range of the TLE2426CDRG4? The input voltage range is from 4 V to 40 V.
- How much current can the TLE2426CDRG4 source and sink? The device can source and sink up to 20 mA of current.
- What is the typical supply current of the TLE2426CDRG4? The typical supply current is 170 µA at VI = 5 V.
- What are the operating temperature ranges for the TLE2426CDRG4? 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).
- How does the noise reduction feature work? The noise reduction feature involves adding an external capacitor (CNR) to reduce peak-to-peak noise and improve line ripple rejection.
- What are some common applications of the TLE2426CDRG4? Common applications include data acquisition front ends, analog signal termination, and precision voltage references.
- What packages are available for the TLE2426CDRG4? The device is available in TO-226AA, SOIC (D), and PDIP (P) packages.
- What is the output impedance of the TLE2426CDRG4? The output impedance is typically 0.0075 Ω.
- How accurate is the output voltage regulation of the TLE2426CDRG4? The output voltage regulation is highly accurate, with values such as −0.102 ± 0.7 mV (sinking) and 0.049 ± 0.5 mV (sourcing).
