Texas Instruments TLV2402IDGK

Overview

TLV2402IDGK from Texas Instruments is a dual-channel, rail-to-rail input/output micro-power operational amplifier with reverse battery protection up to 18 V. It delivers 880 nA per channel supply current, 5.5 kHz gain bandwidth, and operates from 2.5 V to 16 V supply - enabling use in Li-ion–powered sensor front-ends and ultra-low-power data acquisition systems.

For engineers reviewing the TLV2402IDGK datasheet, TLV2402IDGK pinout, TLV2402IDGK application, or TLV2402IDGK equivalent, key selection criteria include its sub-1-µA quiescent current, ±200 µA output drive capability, –40°C to 125°C industrial temperature grade, and 5-V over-the-rail input tolerance for robustness in battery-reversal-prone environments.

Technical Context

The TLV2402IDGK employs a hybrid PNP/NPN input stage enabling rail-to-rail common-mode operation from –0.1 V to V_CC + 5 V while maintaining low input bias current (≤900 pA over temperature). Its internal reverse-battery protection circuit limits supply current to <100 nA at –18 V, preventing damage during incorrect battery installation.

DC precision is maintained via 390 µV typical input offset voltage, 120 dB CMRR, and 130 V/mV open-loop gain at 2.7 V. The device achieves stable unity-gain operation with capacitive loads up to 100 pF (60° phase margin), supporting direct driving of ADC input filters without external compensation.

Key Specifications

Pinout & Package

TLV2402IDGK is housed in an 8-pin MSOP (DGK) package with exposed thermal pad (not electrically connected). The package measures 3.0 mm × 3.0 mm × 1.0 mm and supports reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar micro-power op-amp applications.

Compared with TLV2402IDGK, TLV2402CDGK trades industrial temperature range for lower cost, while LPV521MG/NOPB offers lower quiescent current but removes reverse-battery protection - requiring redesign of power-input protection in portable systems.

Availability

TLV2402IDGK is available at Aetrix Electronics and suitable for portable medical devices, battery-powered environmental sensors, and automotive cabin monitoring systems requiring stable component supply across long production lifecycles.

Supply support for TLV2402IDGK 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLV240x family was designed specifically for ultra-low-power, high-precision signal conditioning in battery-constrained applications - emphasizing sub-1-µA operation, rail-to-rail performance, and robustness against real-world power faults.

FAQ

What is the maximum supply voltage for TLV2402IDGK?

The absolute maximum supply voltage for TLV2402IDGK is 17 V, but the recommended operating range is 2.5 V to 16 V. Operation at 16 V is fully characterized across temperature, with electrical parameters specified at 2.7 V, 5 V, and 15 V. Exceeding 16 V risks permanent damage even with brief transients.

Does TLV2402IDGK support true rail-to-rail input beyond the supply rails?

Yes - TLV2402IDGK supports common-mode input voltages from –0.1 V to V_CC + 5 V. This over-the-rail capability allows direct connection to sensors or signal sources that exceed the positive supply, such as 5-V logic outputs or legacy analog interfaces, without external level-shifting circuitry.

How does reverse battery protection work in TLV2402IDGK?

TLV2402IDGK integrates internal Schottky diode structures that limit reverse supply current to <100 nA at –18 V and 25°C. During reverse polarity, the device draws negligible current, protecting downstream circuitry. Input/output pins remain safe if grounded, but external current limiting (<10 mA) is required if inputs/outputs float during reverse conditions.

Can TLV2402IDGK drive capacitive loads?

TLV2402IDGK is stable with capacitive loads up to 100 pF (60° phase margin), as verified in the datasheet's Figure 24. For larger loads (e.g., ADC input capacitors >100 pF), a series isolation resistor (10–100 Ω) between output and load is recommended to maintain stability without degrading settling time significantly.

What is the typical input bias current of TLV2402IDGK over temperature?

The typical input bias current of TLV2402IDGK is 100 pA at 25°C and rises to ≤900 pA across the full –40°C to 125°C industrial temperature range. This ultra-low I_IB minimizes voltage errors in high-impedance sensor interfaces (e.g., pH electrodes, photodiodes) and enables use with megaohm-level feedback resistors without significant offset drift.