Texas Instruments TLE2425CD

Overview

TLE2425CD from Texas Instruments is a precision 2.5-V virtual ground generator IC designed to replace resistor-divider + op-amp + reference circuits in single-supply (5 V/GND) analog signal-conditioning systems. It delivers ±20 mA output current, exhibits 7.5 mΩ typical output impedance, achieves ±45 µV load regulation (−10 mA to 0), and operates at just 170 µA quiescent current - enabling high-accuracy ADC/DAC biasing in data acquisition front ends.

For engineers reviewing the TLE2425CD datasheet, TLE2425CD pinout, TLE2425CD application, or TLE2425CD equivalent, key selection criteria include its micropower operation, 12-bit-level regulation accuracy over 0°C to 70°C, low-noise (100 µV_RMS) performance, and SOIC-8 package compatibility with standard PCB layouts for analog signal chains.

Technical Context

The TLE2425CD integrates a precision micropower voltage reference and a high-performance operational amplifier on a single die. Its architecture provides active regulation of the virtual ground node against both input voltage variation (1.5 µV/V typical) and output current transients (115 µs to 0.1% for ±10 mA step).

It functions as a unity-gain buffer referenced to an internal 2.5-V bandgap, delivering stable mid-rail bias without external components. The device maintains regulation across full temperature range (0°C to 70°C) and supports capacitive loads up to 100 pF while remaining stable.

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 TLE2425CD, TLE2426CD offers greater drive strength at higher power cost, while REF3025AIDBZR reduces size but shifts burden of output buffering and stability management to the system designer - making TLE2425CD the optimal balance of integration, performance, and ease of use for general-purpose 5-V analog systems.

Availability

TLE2425CD is available at Aetrix Electronics and suitable for instrumentation amplifier biasing, data acquisition front ends, portable medical sensors, and industrial process monitoring requiring stable component supply and long-term production continuity.

Supply support for TLE2425CD 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 company specializing in analog, embedded processing, and digital signal processing technologies, with leadership in precision analog ICs since 1930.

The TLE2425CD belongs to TI's precision virtual ground generator product line, engineered specifically to simplify mid-rail biasing in single-supply analog systems while maintaining 12-bit+ accuracy and micropower efficiency.

FAQ

What is the primary function of the TLE2425CD in analog circuit design?

The TLE2425CD serves as a precision 2.5-V virtual ground generator that replaces multi-component resistor-divider + op-amp + reference solutions in 5-V single-supply systems. It provides a stable, low-impedance, low-noise mid-rail reference node for biasing op-amps, ADCs, DACs, and instrumentation amplifiers - directly improving dynamic range, SNR, and signal accuracy in TLE2425CD-based designs.

Can the TLE2425CD operate from a 3.3-V supply?

No - the TLE2425CD requires a minimum input voltage of 4 V per its recommended operating conditions. It is not rated for reliable operation below 4 V, and attempting to use it with 3.3 V may result in improper regulation, increased output impedance, or failure to reach nominal 2.5-V output. For 3.3-V systems, alternative solutions such as the REF3025 with external buffer should be evaluated instead of the TLE2425CD.

Does the TLE2425CD require external capacitors for stability?

The TLE2425CD is internally compensated and stable with capacitive loads up to 100 pF, as verified in the datasheet's Figure 16. No external compensation capacitor is required for basic operation. However, if larger load capacitances (>100 pF) or high-frequency transient immunity are needed, a small series resistor (e.g., 1–10 Ω) between the OUT pin and the load capacitor is recommended to ensure phase margin - this applies directly to TLE2425CD implementations in noisy environments.

How does the TLE2425CD handle reverse current or sinking into the COMMON pin?

The COMMON pin of the TLE2425CD is the reference ground connection and is not designed to sink or source current externally. All device bias current flows from IN to COMMON, and output current flows between OUT and COMMON. Applying reverse current into COMMON violates absolute maximum ratings and may damage the TLE2425CD. Proper layout must treat COMMON as a dedicated low-impedance ground return - never as a current-carrying node outside the IC's internal path.

Is the TLE2425CD pin-compatible with other members of the TLE242x family?

Yes - all TLE242x variants (TLE2425CD, TLE2425ID, TLE2425MD, TLE2426CD, etc.) share identical SOIC-8 pinouts and terminal functions. The only differences are temperature grade (C: 0°C–70°C, I: −40°C–85°C, M: −55°C–125°C) and electrical specifications such as input regulation and load regulation limits. Therefore, TLE2425CD can be substituted with TLE2425ID or TLE2425MD in the same footprint, provided thermal and specification requirements are met - no PCB changes are needed for drop-in replacement within the same package.