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CA3140S/3

Updated: 2026-07-15

Overview

The CA3140S/3 is a BiMOS operational amplifier that integrates MOSFET inputs with a bipolar output stage. This design provides high input impedance and low input current, making it ideal for applications requiring precision and sensitivity. The device is known for its fast slew rate and wide bandwidth, which are critical in high-speed analog circuits. The CA3140S/3 is commonly used in instrumentation, medical devices, and audio equipment due to its reliable performance and versatility. Its ability to operate with a single or dual power supply further enhances its applicability in various electronic designs.

Physical and Chemical Properties

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The CA3140S/3 is housed in a small outline package (SOIC), which is lightweight and suitable for surface-mount technology. The device exhibits a high input impedance of approximately 1.5 teraohms and an input current as low as 10 pA, which minimizes loading effects on signal sources. Its slew rate is typically 9 V/µs, enabling rapid signal transitions. The operational amplifier operates over a wide temperature range, from -55°C to 125°C, ensuring reliability in diverse environmental conditions. These properties make it a preferred choice for high-performance analog circuits.

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Main Applications

The CA3140S/3 is extensively used in precision instrumentation, such as pH meters and strain gauge amplifiers, where high input impedance and low bias current are essential. It is also employed in signal conditioning circuits for sensors and transducers, providing accurate amplification of weak signals. In addition, the device finds applications in analog computing, audio processing, and medical electronics. Its fast response and stability make it suitable for oscillators, filters, and other analog signal processing tasks. The versatility of the CA3140S/3 ensures its relevance in both industrial and consumer electronics.

Safety and Storage

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The CA3140S/3 is sensitive to electrostatic discharge (ESD), necessitating proper handling procedures. Use anti-static wrist straps and grounded workstations when working with this device to prevent damage. Storage should be in a dry, static-free environment at room temperature. Avoid exposure to moisture and extreme temperatures, as these can degrade the performance and longevity of the device. Proper packaging, such as anti-static bags, is recommended during transportation and storage to maintain the integrity of the operational amplifier.

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B2B Procurement Guide

When procuring the CA3140S/3, verify the specifications to ensure compatibility with your application. Key parameters to check include input impedance, slew rate, and supply voltage range. It is advisable to source from reputable suppliers to guarantee authenticity and quality. Bulk purchases may offer cost savings, but ensure that storage conditions are maintained to prevent damage. Lead times and minimum order quantities (MOQs) should be confirmed with suppliers to align with project timelines. Request samples for testing before large-scale procurement to validate performance in your specific application.

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