Texas Instruments MC3403NG4

Overview

MC3403NG4 from Texas Instruments is a quadruple low-power operational amplifier designed for single-supply (3 V to 36 V) or dual-supply (±2.5 V to ±15 V) operation, featuring true differential inputs, Class AB output stage, internal frequency compensation, and input offset voltage ≤10 mV at 25°C. It delivers rail-to-rail common-mode input range (down to VCC–), peak output swing of VCC– to VCC–1.5 V, and quiescent supply current <7 mA - widely used in sensor signal conditioning, industrial analog front-ends, and power supply monitoring circuits.

For engineers reviewing the MC3403NG4 datasheet, MC3403NG4 pinout, MC3403NG4 application, or MC3403NG4 equivalent, key selection considerations include its 0°C to 70°C temperature rating, SOIC-14 package compatibility, low input bias current (–0.5 µA typ), and guaranteed short-circuit protection - critical for robustness in cost-sensitive linear amplification designs.

Technical Context

The MC3403NG4 implements a classic bipolar-input op-amp architecture with a true differential input stage and Class AB push-pull output stage, enabling stable operation without external compensation. Its internal frequency compensation ensures unity-gain stability across all four amplifiers within the same die.

It supports wide-supply flexibility: single supply from 3 V to 36 V or dual supplies with total differential voltage between ±2.5 V and ±15 V. Input common-mode range extends to the negative rail (VCC–), and output swings to within 1.5 V of VCC+ under load - making it suitable for legacy 5 V, 12 V, and 24 V industrial systems where rail-referenced sensing is required.

Key Specifications

Pinout & Package

MC3403NG4 is housed in a 14-pin plastic small-outline integrated circuit (SOIC) package (D package), 1.75 mm maximum height, with standard 1.27 mm pitch and JEDEC MS-012AB compliance. Pin 1 is located at the top-left corner with notch or index mark orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM324N and TLV2464CDR, the MC3403NG4 offers balanced performance for legacy-compatible 5 V/12 V systems: superior CMRR over LM324N for noise rejection, and proven robustness in harsh environments where CMOS alternatives may suffer from ESD sensitivity or supply sequencing issues.

Availability

MC3403NG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, power supply monitoring, audio pre-amplification, and motor control feedback requiring stable component supply across long-lifecycle production programs.

Supply support for MC3403NG4 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 and embedded processing technologies, with decades of experience in high-reliability op-amp design and manufacturing.

The MC3403NG4 belongs to TI's legacy bipolar op-amp product line, engineered specifically for cost-effective, robust analog signal conditioning in industrial, automotive, and consumer applications where wide supply range and fault tolerance are essential.

FAQ

What is the operating temperature range for MC3403NG4?

The MC3403NG4 is characterized for operation from 0°C to 70°C ambient temperature. This specification is defined in the official Texas Instruments SLOS101C datasheet and applies across all electrical parameters including input offset voltage, common-mode rejection ratio, and output swing. The MC3403NG4 is not rated for extended industrial temperatures (–40°C to 85°C); for that range, the MC3303 variant should be selected instead. Always validate thermal derating in high-power-density layouts.

Is MC3403NG4 pin-compatible with MC3303 series devices?

Yes, MC3403NG4 is pin-compatible with MC3303 variants in the same SOIC-14 (D) package, sharing identical pinout, terminal functions, and footprint. However, MC3403NG4 is rated for 0°C to 70°C operation, while MC3303 operates from –40°C to 85°C and has tighter input offset voltage (8 mV max vs. 10 mV max). Substitution is electrically valid but requires thermal validation for extended-temperature use cases.

Does MC3403NG4 require external frequency compensation?

No, MC3403NG4 features internal frequency compensation optimized for unity-gain stability across all four amplifiers. This eliminates the need for external compensation capacitors in standard inverting, non-inverting, or voltage-follower configurations. The internal compensation ensures phase margin ≥60° with 2 kΩ load and 200 pF capacitive load, as verified in the SLOS101C datasheet operating characteristics section.

What is the maximum output current capability of MC3403NG4?

The MC3403NG4 provides short-circuit output current of ±10 mA minimum and ±45 mA typical per amplifier, as specified in the SLOS101C datasheet under "IOS" (short-circuit output current) test conditions. Continuous output current should be limited by thermal dissipation: with θJA = 86°C/W in SOIC-14, sustained >20 mA into low-impedance loads requires careful PCB thermal design to avoid exceeding 125°C junction temperature.

Can MC3403NG4 operate from a single 5 V supply?

Yes, MC3403NG4 supports single-supply operation from 3 V to 36 V, including 5 V. At VCC+ = 5 V and VCC– = 0 V, the device delivers peak output swing of 3.3 V (VCC+ – 1.7 V) into 10 kΩ, with common-mode input range extending to ground. This makes MC3403NG4 suitable for interfacing with 5 V microcontrollers and ADCs without level-shifting circuitry - confirmed in the "Electrical Characteristics" table for VCC+ = 5 V conditions.