An active filter is an electronic filter that uses active components like transistors and operational amplifiers along with passive components like capacitors and inductors to filter signals. Active filters can provide steeper roll-offs and more flexibility than passive filters but require a power source. They are commonly used to remove unwanted frequencies or improve signal-to-noise ratio. Active filters implement electronic filtering using amplifiers which can enhance cost, performance, and predictability compared to passive filters.

1. An active filter is an electronic filter that uses active components such as transistors, operational
amplifiers, or other amplifying elements, in addition to passive components such as capacitors
and inductors, to filter a signal. Active filters are able to provide steeper roll-off characteristics
and greater flexibility than passive filters, but they require a power source to operate. They are
often used in electronic circuits to remove unwanted frequencies or to improve the signal-to-
noise ratio.
An active filter is a type of analog circuit implementing an electronic filter using active
components, typically an amplifier. Amplifiers included in a filter design can be used to improve
the cost, performance and predictability of a filter. Active Filter are available at Jotrin，You can
view related stock，price，package,datasheet about Specific Data Conversion ICs models.You
can buy Active Filter by the products list below.