Overview
The TLE2425IDRG4, produced by Texas Instruments, is a precision virtual ground device that combines a high-performance operational amplifier and a precision micropower voltage reference in a single silicon chip. This 3-terminal device is designed to enhance dynamic signal range, improve signal-to-noise ratio, reduce distortion, and increase signal accuracy. It simplifies the design process by replacing multiple components with a single, easy-to-use device, making it ideal for signal-conditioning front ends in data acquisition systems.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Voltage, VI | 4 | 40 | V | ||
| Operating Free-Air Temperature, TA | -40 | 85 | °C | ||
| Output Voltage | TA = 25°C | 2.48 | 2.5 | 2.52 | V |
| Output Voltage | Full Range | 2.47 | 2.53 | V | |
| Temperature Coefficient of Output Voltage | TA = 25°C | 20 | ppm/°C | ||
| Bias Current | IO = 0, TA = 25°C | 170 | 250 | nA | |
| Input Voltage Regulation | VI = 4.5 V to 5.5 V, TA = 25°C | 1.5 | 20 | µV | |
| Ripple Rejection | f = 120 Hz, ∆VI(PP) = 1 V, TA = 25°C | 80 | dB |
Key Features
- Precision Virtual Ground: Combines a precision micropower voltage reference and a high-performance operational amplifier in a single chip.
- Improved Signal Integrity: Enhances dynamic signal range, improves signal-to-noise ratio, and reduces distortion.
- High Accuracy: Input and load regulation exceed 12 bits of accuracy on a single 5-V system.
- Low Power Dissipation: Reduces output impedance and power dissipation in virtual-ground-generation circuits.
- Wide Operating Temperature Range: Available in versions operating from -40°C to 85°C and -55°C to 125°C.
- Compact Packaging: Available in SOIC and SOP packages, suitable for various design needs.
Applications
- Data Acquisition Systems: Ideal for signal-conditioning front ends that require high accuracy and low noise.
- ADC and DAC Interfacing: Simplifies interfacing to analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
- High-Precision Measurement Systems: Suitable for applications requiring precise voltage references and low distortion.
- Industrial and Medical Devices: Used in various industrial and medical devices where high signal integrity is crucial.
Q & A
- What is the TLE2425IDRG4 used for?
The TLE2425IDRG4 is a precision virtual ground device used to enhance signal integrity and accuracy in various electronic systems, particularly in data acquisition and high-precision measurement applications.
- What are the key benefits of using the TLE2425IDRG4?
The key benefits include improved dynamic signal range, enhanced signal-to-noise ratio, reduced distortion, and easier interfacing to ADCs and DACs.
- What is the operating temperature range of the TLE2425IDRG4?
The TLE2425IDRG4 operates from -40°C to 85°C.
- What is the output voltage of the TLE2425IDRG4?
The output voltage is typically 2.5 V, with a range of 2.48 V to 2.52 V at 25°C.
- How does the TLE2425IDRG4 improve signal accuracy?
It improves signal accuracy by combining a precision micropower voltage reference and a high-performance operational amplifier, resulting in high input and load regulation accuracy.
- What is the ripple rejection of the TLE2425IDRG4?
The ripple rejection is 80 dB at 120 Hz with a ∆VI(PP) of 1 V.
- What are the available package options for the TLE2425IDRG4?
The device is available in SOIC and SOP packages.
- Is the TLE2425IDRG4 suitable for high-temperature applications?
Yes, it is available in versions that operate up to 125°C.
- How does the TLE2425IDRG4 reduce power dissipation?
It reduces power dissipation by minimizing output impedance in virtual-ground-generation circuits.
- What is the bias current of the TLE2425IDRG4?
The bias current is typically 170 nA at 25°C.
