About Active Band Pass Filters
Active band pass filters are used to attenuate frequencies below and above a range of frequencies (i.e., the bandwidth or passband of the filter). Any signal with a frequency within that band pass range passes easily through the filter. Any frequency outside of the band pass is attenuated or reduced. There are two basic types of active band pass filters: switched capacitor and continuous. Each type of filter is available with first, second, third, fourth, fifth, sixth, seventh or eighth order filtering. Switched capacitor active band pass filters are clocked devices. The input signal is sampled at a high rate and processed discretely instead of on a continuous-time basis. Continuous active band pass filters have a continuous time operation.
Active band pass filters carry performance specifications for cutoff or center frequency, bandwidth, power dissipation, operating temperature, supply voltage and supply current. Like other types of active filters, they also differ in terms of features and applications. For example, some active band pass filters feature protection against electrostatic discharge (ESD), short circuits, and over current conditions. Others are radiation-tolerant or can operate with only one power supply. In terms of applications, active band pass filters may be rated for audio/video, automotive, avionics, commercial, communications, computers, data acquisition, general industrial, medical, or military applications. Some active band pass filters are also used in portable devices such as cell phones and personal digital assistants (PDA).
More >>Engineering Web: Active Band Pass Filters
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A Basic Introduction to Filters - Active, Passive and... Note 779 Kerry Lacanette Filters Active Passive April 1991 Introduction and Switched-Capacitor 1 0 INTRODUCTION Filters of some sort are essential to See National Semiconductor Information |
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OA-26 Designing Active High Speed Filters See National Semiconductor Information |
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Free Electronic Circuit Collection of 27,000 + electronic... Band-Pass Filters - Active Blinkers * Band-Pass Filters - Passive Biomedical Circuits |
Part Numbers for Active Band Pass Filters
| Part # | Distributor | Manufacturer | Product Category | Description |
|---|---|---|---|---|
| BA3830S | Digi-Key | Rohm Semiconductor | Integrated Circuits (ICs) | IC BAND-PASS FILTER SDIP18 |
| LTC1060CN#PBF | Newark | LINEAR TECHNOLOGY | All Supplier Direct Ship | SW CAP FILTER, DUAL, 20DIP; Filter Type:Universal Active; Filter Class:4th Order; Filter Response:Band-Pass; Frequency, Cut-off:20kHz; Filters, No. of:2; Voltage, Supply Min:2.37V; Termination Type:Through Hole; Case Style:DIP; RoHS Compliant: Yes |
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