STMicroelectronics TL084IDT J-FET Operational Amplifier

High-Performance J-FET Operational Amplifier for Automotive Applications

The STMicroelectronics TL084IDT is a cutting-edge J-FET operational amplifier designed to deliver exceptional performance in automotive and industrial applications. With its quad-channel architecture and advanced specifications, this device sets a new standard for precision analog signal processing in demanding environments. The TL084IDT combines high-speed operation with robust reliability, making it ideal for modern electronic systems requiring consistent performance across extreme temperature ranges.

Key Technical Specifications

Engineered with STMicroelectronics' proven process technology, this operational amplifier features four independent J-FET channels in a compact 14-SOIC package. The device's performance metrics include:

These specifications enable the TL084IDT to excel in applications requiring high accuracy and stability, particularly in automotive systems where temperature extremes are common. The device's J-FET input stage provides exceptional input impedance characteristics, minimizing loading effects on signal sources while maintaining excellent noise performance.

Advanced Automotive-Grade Design

Certified to meet the stringent AEC-Q100 automotive quality standards, the TL084IDT is specifically engineered for vehicular applications. Its wide supply voltage range (6V to 36V) accommodates various automotive power architectures, while the surface-mount SOIC package ensures reliable PCB integration in space-constrained designs. The amplifier's 40 mA output current capability enables direct driving of heavy loads without additional buffering circuitry.

Key reliability features include:

• Temperature-stable performance across -40°C to 125°C range
• Robust ESD protection for manufacturing durability
• Automotive process qualification for long-term reliability

Performance-Driven Applications

The TL084IDT's combination of speed, precision, and ruggedness makes it suitable for a wide range of applications including:

In industrial automation systems, the amplifier's 16 V/µs slew rate and 4 MHz gain bandwidth enable accurate signal conditioning for high-speed sensor interfaces. The device's low input bias current (20 pA) minimizes errors in high-impedance sensor circuits, while the 3 mV input offset voltage ensures measurement accuracy.

For automotive applications, the amplifier excels in:

• Engine control unit (ECU) signal processing
• Vehicle sensor interface modules
• On-board diagnostic system (OBD) circuits
• Automotive audio processing systems

Its tape-and-reel packaging format facilitates automated PCB assembly processes, making it ideal for high-volume production environments.

Design Flexibility and Integration

The TL084IDT's 14-SOIC package (3.90mm width) offers optimal space efficiency while maintaining industry-standard pin spacing for easy routing. The device's 4-channel configuration provides design flexibility, allowing multiple signal paths to be implemented with a single component. This integration reduces overall system complexity and improves reliability through component count reduction.

Designers appreciate the amplifier's:

• Wide supply voltage range accommodating various system architectures
• High output drive capability eliminating external buffers
• Low power consumption (1.4 mA per channel) for energy-efficient designs
• Temperature stability ensuring consistent performance in harsh environments

When designing with the TL084IDT, engineers benefit from STMicroelectronics' comprehensive technical support, including SPICE models, application notes, and design guidelines. The device's availability in tape-and-reel packaging (TR) format supports modern SMT assembly processes, ensuring reliable supply chain integration.

Conclusion: Precision Meets Reliability

The STMicroelectronics TL084IDT represents the perfect balance between performance and reliability in operational amplifier design. Its J-FET input architecture delivers exceptional input characteristics while maintaining automotive-grade robustness. With its combination of high-speed specifications, rugged construction, and advanced packaging, this device is poised to become the amplifier of choice for engineers developing next-generation automotive and industrial systems.

Whether implementing precision sensor interfaces, high-speed signal conditioning circuits, or automotive control systems, the TL084IDT provides the performance headroom and reliability engineers need to create cutting-edge electronic solutions. Its comprehensive feature set and proven STMicroelectronics quality make it an ideal choice for demanding applications where performance and reliability are paramount.

Tags: Operational Amplifier, J-FET IC, Automotive Grade, High-Speed Op-Amp, SOIC Package