Texas Instruments TLE2425MD

Overview

TLE2425MD from Texas Instruments is a precision micropower virtual ground generator IC designed to provide a stable 2.5-V reference midpoint in single-supply 5-V analog systems. It integrates a precision voltage reference and high-performance op-amp in one SOIC-8 package, delivers ±20 mA output current, exhibits 7.5 mΩ typical output impedance, and maintains 12-bit regulation accuracy across −55°C to 125°C for data acquisition front ends.

For engineers reviewing the TLE2425MD datasheet, TLE2425MD pinout, TLE2425MD application, or TLE2425MD equivalent, key selection criteria include its extended temperature range (−55°C to 125°C), low 170 µA quiescent current, ±20 mA sink/source capability, 20 ppm/°C tempco, and compatibility with ADC/DAC biasing in isolated signal-conditioning circuits.

Technical Context

The TLE2425MD implements a monolithic precision voltage reference core combined with a unity-gain buffered output stage, enabling true rail-to-rail virtual ground generation without external components. Its architecture achieves <±250 µV load regulation over ±20 mA and <100 µV input regulation across 4 V to 40 V input range.

It operates as a three-terminal active device (IN, COMMON, OUT) with no internal connection on pins 4–7 in the SOIC-8 package. The output stage provides low-noise (100 µV rms, 10 Hz–10 kHz), fast transient response (115 µs to 0.1% for ±10 mA step), and inherent short-circuit protection up to ±80 mA.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 3.91 mm × 4.90 mm, 1.75 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar virtual ground generator applications.

Compared with TLE2425ID and REF3025AIDBZR, the TLE2425MD uniquely combines extended temperature qualification, integrated buffering, and ±20 mA drive in a single SOIC-8 package-making it the only option that preserves layout, BOM, and performance in mission-critical analog subsystems requiring −55°C to 125°C operation.

Availability

TLE2425MD is available at Aetrix Electronics and suitable for industrial sensor interface modules, aerospace data loggers, and automotive engine control units requiring stable component supply across extreme temperature ranges and long production lifecycles.

Supply support for TLE2425MD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of heritage in precision analog IC design.

The TLE2425MD belongs to TI's precision voltage reference and virtual ground generator product line, engineered specifically for high-accuracy, low-drift analog signal conditioning in harsh-environment applications where passive solutions fail.

FAQ

What is the maximum input voltage rating for the TLE2425MD?

The TLE2425MD has an absolute maximum continuous input voltage rating of 40 V. It operates reliably across a recommended input range of 4 V to 40 V, making it compatible with both regulated 5-V supplies and unregulated industrial rails up to 36 V. Exceeding 40 V risks permanent damage per the Absolute Maximum Ratings table in the SLOS065D datasheet.

Does the TLE2425MD require external capacitors for stability?

Yes, the TLE2425MD requires a minimum 1-µF ceramic capacitor between IN and COMMON pins for stability and input ripple suppression. A 100-pF capacitor between OUT and COMMON is recommended for optimal transient response during ±10 mA load steps. These values are validated in Figure 16 of the datasheet and ensure stable operation across the full −55°C to 125°C range.

Can the TLE2425MD drive multiple op-amps simultaneously?

Yes, the TLE2425MD can drive multiple op-amps simultaneously-its ±20 mA output current capability and 7.5 mΩ typical output impedance allow it to supply bias currents for up to four precision op-amps (e.g., OPAx350) while maintaining <1 mV regulation error. Load regulation remains within ±250 µV even at full ±20 mA, ensuring consistent performance across multi-channel analog signal chains.

How does the TLE2425MD compare to using a resistor divider for virtual ground generation?

The TLE2425MD replaces passive resistor dividers with active regulation, delivering superior performance: it provides 7.5 mΩ output impedance versus kΩ-level impedance of resistive dividers, eliminates temperature drift (20 ppm/°C vs. >100 ppm/°C for standard resistors), and maintains regulation under dynamic loads-whereas resistor dividers sag under current draw and introduce noise and mismatch errors that degrade ADC linearity and SNR.

Is the TLE2425MD pin-compatible with other members of the TLE2425 family?

Yes, all TLE2425 variants-including TLE2425CD, TLE2425ID, and TLE2425MD-share identical SOIC-8 (D) pinout and terminal functions (IN, COMMON, OUT on pins 3, 2, 1 respectively). Pins 4–7 and 8 are NC across all versions. This allows direct substitution in existing layouts when upgrading temperature range or qualification level without PCB revision.