Texas Instruments TLE2426IP

Overview

TLE2426IP from Texas Instruments is a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2) for single-supply analog systems. It delivers ±20 mA output current, draws only 170 µA typical supply current at VI = 5 V, operates across 4 V to 40 V input range, and provides 7.5 mΩ typical output impedance - enabling use in data acquisition front ends and op-amp biasing networks.

For engineers reviewing the TLE2426IP datasheet, TLE2426IP pinout, TLE2426IP application, or TLE2426IP equivalent, this device serves as a drop-in replacement for resistor-capacitor-opamp virtual ground circuits, offering tighter initial output tolerance (<1% at 5 V), superior line ripple rejection (>12-bit accuracy), and integrated noise reduction capability via dedicated CNR pin in its 8-pin PDIP package.

Technical Context

The TLE2426IP integrates a micropower operational amplifier with a precision-trimmed resistive divider on a single die, ensuring a fixed VO/VI ratio of 0.5 across temperature and load. Its architecture supports simultaneous sourcing and sinking up to ±20 mA while maintaining microvolt-level regulation error (±45 µV typ. sourcing, ±15 µV typ. sinking).

It features a dedicated Noise Reduction (CNR) pin - accessible only in D, JG, and P packages - which, when bypassed with a 1 µF capacitor, reduces output noise from 120 µVrms to 30 µVrms and improves ripple rejection across 10 Hz–10 kHz. The device is specified for −40°C to +85°C operation and exhibits 25 ppm/°C max temperature coefficient over full range.

Key Specifications

Pinout & Package

Package: 8-pin Plastic Dual-In-Line Package (PDIP), body width 0.300 inch, lead finish NiPdAu, RoHS compliant, through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar rail-splitter applications.

Compared with LM334Z and LT6600-10, the TLE2426IP uniquely combines precision 0.5× ratio, micropower consumption, ±20 mA drive, and integrated noise reduction - making it the only direct solution for high-accuracy, low-noise, single-supply analog biasing without external compensation.

Availability

TLE2426IP is available at Aetrix Electronics and suitable for data acquisition front ends, analog signal termination circuits, and op-amp biasing networks requiring stable component supply across industrial temperature ranges and long-lifecycle programs.

Supply support for TLE2426IP 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 digital signal technologies, with over 90 years of innovation in precision analog ICs.

The TLE2426IP belongs to TI's precision rail-splitter product line, engineered specifically to replace discrete resistor-capacitor-opamp virtual ground circuits in space-constrained, high-accuracy analog systems.

FAQ

What is the primary function of the TLE2426IP in analog circuit design?

The TLE2426IP functions as a precision rail-splitter IC that generates a stable virtual ground at exactly half the input supply voltage (VO = VI/2). It replaces passive resistor dividers and op-amp buffers in single-supply analog systems, delivering ±20 mA output current with 7.5 mΩ output impedance and <1% initial accuracy - enabling accurate biasing of op-amps, ADCs, and sensor interfaces without external components.

Does the TLE2426IP require external components to operate as a virtual ground?

The TLE2426IP operates as a complete virtual ground solution with only three connections: IN (supply input), OUT (mid-rail output), and COMMON (system ground). An external 1 µF capacitor on the NOISE REDUCTION (pin 8) is optional but recommended to reduce output noise from 120 µVrms to 30 µVrms and improve ripple rejection - no resistors, op-amps, or trim pots are required for basic operation of the TLE2426IP.

What is the maximum input voltage the TLE2426IP can handle, and what happens beyond that limit?

The TLE2426IP supports a continuous input voltage range of 4 V to 40 V, with absolute maximum rating of 40 V. Exceeding 40 V may cause permanent damage, as stated in the absolute maximum ratings table. At 40 V input, the TLE2426IP delivers 20 V output with ±0.2 V tolerance and maintains 25 ppm/°C temperature coefficient - making it suitable for 24 V industrial systems and legacy 36 V telecom rails.

How does the TLE2426IP compare to using a resistor divider and op-amp for virtual ground generation?

The TLE2426IP integrates a precision-trimmed divider and micropower op-amp on one die, achieving better than 1% initial accuracy and 25 ppm/°C drift - far exceeding typical discrete resistor divider (±5% tolerance, 100+ ppm/°C drift) plus op-amp offset errors. It also eliminates PCB area, BOM count, and thermal mismatch issues inherent in discrete solutions, while drawing only 170 µA vs. >1 mA for typical op-amp-based splitters - a key advantage for the TLE2426IP in compact, low-power designs.

Is the TLE2426IP pin-compatible with other members of the TLE2426 family, such as TLE2426CP or TLE2426ILP?

No - the TLE2426IP uses an 8-pin PDIP package with dedicated NOISE REDUCTION (pin 8) and four NC pins, whereas TLE2426CP shares the same 8-pin PDIP footprint and pinout, and TLE2426ILP uses a 3-pin TO-92 package with no CNR functionality. Only TLE2426CP and TLE2426IP are pin-compatible; TLE2426ILP and TLE2426CLP are functionally equivalent but mechanically incompatible due to different pin count and layout - confirming distinct mechanical integration requirements for each TLE2426IP variant.