STMicroelectronics LM358QT Dual Operational Amplifier

Introducing the STMicroelectronics LM358QT Dual Operational Amplifier

In the evolving landscape of electronic design, precision and reliability remain paramount. The

LM358QT

from STMicroelectronics emerges as a versatile solution for engineers seeking high-performance operational amplification in compact form factors. This dual-channel amplifier combines automotive-grade durability with general-purpose flexibility, making it ideal for applications ranging from industrial control systems to advanced sensor interfaces.

Engineered to meet the rigorous demands of modern electronics, the LM358QT operates seamlessly across a wide voltage range of 3V to 30V. Its 8-DFN (2x2) package with exposed pad technology ensures optimal thermal management, while maintaining a footprint suitable for space-constrained designs. The device's 1.1 MHz gain bandwidth product and 0.6V/µs slew rate deliver responsive performance in signal conditioning and amplification tasks.

Key Specification	Value
Amplifier Type	General Purpose
Supply Current	700µA (x2 Channels)
Operating Temperature	0°C ~ 70°C
Output Current	40 mA/Channel

Automotive-Grade Performance

As part of STMicroelectronics' AEC-Q100 qualified series, the LM358QT demonstrates exceptional resilience in automotive environments. Its temperature stability and electromagnetic interference (EMI) resistance make it particularly suited for under-the-hood applications, including engine management systems and battery monitoring circuits. The device's rail-to-rail input capability and 2 mV input offset voltage ensure measurement accuracy even in noisy environments.

Designers benefit from the amplifier's low input bias current of 20 nA, which minimizes loading effects on high-impedance sensors. This characteristic proves invaluable in precision measurement applications such as medical instrumentation and industrial process control. The amplifier's ability to maintain performance across its entire operating temperature range reduces the need for complex compensation circuitry.

Design Flexibility and Integration

The LM358QT's surface-mount 8-DFN package enables automated assembly processes while reducing board space requirements. Its dual-channel configuration allows for circuit simplification in applications requiring multiple amplification stages. When combined with STMicroelectronics' extensive ecosystem of development tools and technical support, engineers can accelerate time-to-market for their designs.

Whether implementing active filtering in communication systems or creating precision voltage followers for data acquisition systems, the LM358QT provides the performance characteristics needed for modern electronic systems. Its compatibility with both single and dual power supply configurations further enhances its versatility across different design scenarios.

Tags: Automotive Electronics, General Purpose Amplifiers, Surface Mount Technology, Industrial Sensors, Signal Conditioning