MAX281ACWE+

Series:	--
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Filter Type:	Bessel, Low Pass Switched Capacitor
Frequency - Cutoff or Center:	20kHz
Number of Filters:	1
Filter Order:	5th
Voltage - Supply:	4.75 V ~ 16 V, ±2.375 V ~ 8 V
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	MAX281

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

MAX281ACWE+ is an integrated active filter based on the Maxim Integrated MAX281ACWE+ architecture. It is a highly integrated filter, which includes a full-fledged analog active filter, an analog to digital converter, a temperature sensor, and a wide range of operating conditions. The MAX281ACWE+ filter is designed for fast and accurate filtering of analog signals.

Applications

MAX281ACWE+ active filters are primarily used for noise filtering, signal conditioning, and instrumentation applications. The filter offers excellent performance in these applications by providing low-pass, high-pass, and band-stop filters, as well as notch filters. Noise filtering and signal conditioning applications include noise reduction from amplifiers and power supplies, as well as dynamic filtering of fast signals. Instrumentation applications include signal tracking and power conversion applications, including automated feedback control and signal data acquisition systems. The dynamic range of the filter makes it suitable for high-speed signal processing applications, such as wireless communications, where data transmission speed is critical.

Working Principle

The MAX281ACWE+ filter works by utilizing a differential amplifier architecture. The differential amplifier is composed of two identical amplifier stages, in which the outputs of one are connected to the inputs of the other. The first amplifier is configured as a low-pass filter, while the second amplifier is configured as a high-pass filter. In this manner, both low-frequency and high-frequency signals can be filtered from the input signal.The two amplifier stages are connected in a fully-differential feedback configuration. This means that the output of the second stage is fed back to the differential non-inverting input of the first amplifier, thereby allowing for a wide range of filtering capabilities. The differential amplifier is driven by an analog to digital converter, which is configured to convert the input signal into digital form.The analog to digital converter also provides a reference voltage, which is used to control the gain of the differential amplifier. This enables the output currents of the amplifier stages to be accurately controlled. By changing the reference voltage, the gain of the filters can be adjusted, which allows for a wide range of filtering operations. In addition, the temperature sensor provides feedback to the analog to digital converter, which ensures that the output gains remain constant, even with temperature changes.

Conclusion

The MAX281ACWE+ active filter is a highly integrated, full-fledged filter. Its differential amplifier architecture allows for fast, low-noise, and accurate signal filtering. With its wide range of operating conditions, the MAX281ACWE+ is an ideal solution for signal conditioning, noise filtering, and instrumentation applications. Its excellent performance and reliable operation make it an invaluable tool for any application that requires precision signal filtering.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description