CA3420EZ

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The CA3420EZ is an operational amplifier (op amp) with bifet operational transconductance amplifier (OTA) output stage. It is designed specifically to help reduce power consumption and provide high performance in critical applications. The device features a differential input stage with a low-noise low-power output stage. This allows the device to have high common-mode rejection ratio (CMRR) and low-noise, while also providing a high input impedance.

The CA3420EZ is ideal for use in portable devices where power and cost are factors, as well as applications where the user wants to maximize performance without sacrificing requirements such as low power consumption. This allows the device to be used in numerous applications, from instrumentation to audio. Additionally, the device’s precision architecture allows for a very precise gain control through external components, allowing for the right amount of gain to be achieved for the desired application.

The CA3420EZ is available in a 16-pin SOIC package, which allows it to be used in small, compact applications and easily integrated into most boards. The device is also voltage compensated and junction isolated, allowing it to remain within its parameters over various supply voltages and environmental conditions. This helps to ensure that the device always produces consistent, reliable results, regardless of the conditions.

The CA3420EZ is specified for operation from a single supply of 2.3V to 5.5V. It can be used with input common-mode ranges near the supply rails, though for optimal operation the common-mode voltage should remain within the range of VDD/2 ± 500mV. The device is stable for all capacitive loads up to 50 picofarads (pF). The output impedance is also low, with a typical value of less than 75 ohms.

The CA3420EZ’s versatile design is based on a four-stage topology consisting of a differential input stage, a transconductance stage, a unity-gain voltage amplifier, and an output current driver. This allows the device to achieve high performance while still being able to remain within the power limitations imposed by the application. The transconductance stage provides a high-impedance signal path, which helps to reduce noise and allows higher resolution signals to be processed. The unity gain voltage amplifier acts as a buffer between the input and the output stage, providing a low-noise, low-distortion output signal. Finally, the output current driver provides a high-current drive capability to ensure that output signals remain unaffected by loading.

The CA3420EZ is a versatile and powerful operational amplifier, which is well suited for use in applications that require low power, high performance and flexibility. Its multiple-stage topology allows it to achieve exceptional performance with minimal power consumption, making it ideal for use in portable devices. Additionally, its flexible design allows for precision gain customization through external components, allowing users to get exactly the level of performance they need.

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