Texas Instruments TLV2404CD

Overview

TLV2404CD from Texas Instruments is a quad rail-to-rail input/output operational amplifier with 880 nA per channel supply current, reverse battery protection up to 18 V, and operation from 2.5 V to 16 V. It features 390 µV typical input offset voltage, 5.5 kHz gain bandwidth, and ±200 µA output drive-enabling ultra-low-power sensor signal conditioning in battery-powered medical monitors and portable gas detectors.

For engineers reviewing the TLV2404CD datasheet, TLV2404CD pinout, TLV2404CD application, or TLV2404CD equivalent, key selection criteria include micro-power operation (<1 µA/ch), rail-to-rail I/O swing, reverse-battery fault tolerance, and compatibility with Li-ion (2.5 V) and industrial (15 V) supplies.

Technical Context

The TLV2404CD uses a dual-stage input stage combining PNP and NPN differential pairs to achieve rail-to-rail input operation extending 5 V above VCC and –0.1 V below ground. Its internal Schottky diode network enables reverse battery protection with <100 nA leakage at –18 V.

DC precision is maintained via low input bias current (100 pA typ at 25°C), high CMRR (120 dB), and open-loop gain ≥130 V/mV at 2.7 V-supporting accurate amplification of high-impedance sources like thermistors and pH electrodes without significant error.

Key Specifications

Pinout & Package

TLV2404CD is housed in an 14-pin SOIC (D) package with standard quad op-amp pinout and no internal NC pins. Thermal resistance θ_JA = 122.6°C/W supports continuous operation at ambient temperatures up to 70°C with ≤142 mW power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar operational amplifier applications.

Compared with TLV2404ID and TLV2244CD, the TLV2404CD offers optimal balance of ultra-low power, reverse-battery resilience, and commercial-temperature performance-making it ideal for cost-sensitive, battery-constrained consumer and medical devices where fault tolerance is critical but extended temperature range is not required.

Availability

TLV2404CD is available at Aetrix Electronics and suitable for portable medical sensors, industrial battery monitoring, and wireless environmental sensing requiring stable component supply across long production lifecycles.

Supply support for TLV2404CD 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 product line was designed specifically for ultra-low-power, single-supply signal conditioning in battery-operated instrumentation-emphasizing micro-power consumption, rail-to-rail operation, and robustness against real-world faults like reverse battery connection.

FAQ

What is the maximum supply voltage for TLV2404CD?

The absolute maximum supply voltage for TLV2404CD is 17 V, with recommended operation from 2.5 V to 16 V. Exceeding 16 V risks violating the device's safe operating area, especially at elevated temperatures. The TLV2404CD maintains specified performance across this full range, including 15 V operation with 130 V/mV open-loop gain and 14.95 V high-level output voltage.

Does TLV2404CD support rail-to-rail input and output simultaneously?

Yes, TLV2404CD supports true rail-to-rail input and output operation. Its input common-mode range extends from –0.1 V to V_CC + 5 V, and its output swings within 20 mV of V_CC and 90 mV of GND under 500 kΩ load. This simultaneous rail-to-rail capability enables full utilization of supply headroom in single-supply systems such as TLV2404CD-based sensor front-ends.

How does reverse battery protection work in TLV2404CD?

TLV2404CD incorporates an internal Schottky diode network that limits reverse supply current to <100 nA at –18 V and 25°C. When reverse voltage is applied, the diodes block conduction while allowing safe leakage-eliminating the need for external series diodes. This protection applies only to the V_CC pin; inputs and outputs must still be current-limited to <10 mA during reverse conditions to avoid ESD structure activation.

What is the typical input bias current of TLV2404CD at 25°C?

The typical input bias current of TLV2404CD is 100 pA at 25°C, with a maximum of 350 pA over the 0°C to 70°C commercial temperature range. This ultra-low value enables accurate amplification of signals from high-impedance sources such as pH electrodes, thermistors, and piezoelectric sensors without significant voltage drop across source resistances up to 10 MΩ.

Can TLV2404CD operate from a 2.5-V supply?

Yes, TLV2404CD is fully specified for operation down to 2.5 V, making it compatible with single Li-ion cells and low-voltage microcontrollers like the MSP430. At 2.7 V, it delivers 130 V/mV open-loop gain, 2.65 V high-level output, and 90 mV low-level output-ensuring functional performance even as battery voltage declines toward end-of-life.