TLE2425IDG4

Overview

The TLE2425IDG4 is a precision virtual ground IC from Texas Instruments, designed to generate a stable mid-supply reference for single-power-source analog systems. It integrates a micropower voltage reference and a high-performance operational amplifier into a single silicon chip. The device operates within an input voltage range of 4 V to 40 V and provides a fixed output voltage of 2.5 V at 25°C. It features a typical bias current of 170 µA and supports a typical output current capability of ±20 mA. The component is housed in an 8-pin Small Outline (D) package and is rated for operation over an extended temperature range of -40°C to 85°C.

Feature Summary

• Integrates a precision micropower voltage reference with a high-performance operational amplifier on a single chip to eliminate external components typically required for virtual ground generation.
• Provides excellent regulation characteristics with low output impedance and high ripple rejection, ensuring signal accuracy and improved dynamic range in data acquisition front ends.
• Capable of sourcing or sinking significant output currents while maintaining low power dissipation, facilitating easier interfacing to ADCs and DACs.

Applications

• Signal-conditioning applications requiring a reference voltage for terminating signal grounds in single-supply systems.
• Front ends of data acquisition systems demanding high accuracy and elimination of system errors associated with traditional resistor-capacitor solutions.
• Interfacing circuits for Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs).

Procurement Notes

Verify the specific suffix 'IDG4' corresponds to the industrial temperature grade (-40°C to 85°C) and SOIC-8 tube packaging as documented in the manufacturer's ordering information. Confirm that the 'G4' designation aligns with current lead-free and environmental compliance standards specified by Texas Instruments. Ensure compatibility with the intended operating voltage range of 4 V to 40 V before integration.

Selection Notes

Select the TLE2425IDG4 when a precise, low-noise virtual ground is needed for single-supply analog circuits without the complexity of discrete op-amp and reference designs. Choose this variant for applications requiring operation down to -40°C, distinguishing it from commercial grade parts. Consider the 20 mA output drive capability and low output impedance for driving moderate loads directly.

Part Context

The TLE2425 series serves as a dedicated solution for creating precision virtual grounds, replacing complex discrete networks of resistors, capacitors, and operational amplifiers. This simplification reduces board space, lowers distortion, and improves signal-to-noise ratios. The IDG4 variant specifically targets industrial environments, offering reliability across a wider temperature spectrum compared to standard commercial options.

Replacement Considerations

TLE2425ID