Also See MAX7401/5 8th-Order, Low-Power Bessel Filters
| Status |
| Active: In Production. |
| Description | ||||||
The MAX291/MAX295 Butterworth filters provide maximally flat passband response, and the MAX292/MAX296 Bessel filters provide low overshoot and fast settling. All four filters have fixed responses, so the design task is limited to selecting the clock frequency that controls the filter's corner frequency. An external capacitor is used to generate a clock using the internal oscillator, or an external clock signal can be used. An uncommitted operational amplifier (noninverting input grounded) is provided for building a continuous time lowpass filter for post-filtering or anti-aliasing. Produced in an 8-pin DIP/SO and a 16-pin wide SO package, and requiring a minimum of external components, the MAX291 series delivers very aggressive performance from a tiny area. | ||||||
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| Key Specifications: Active Filters | |||||||||||||||||
| Part Number | Filter Sections | Order Per Filter Section | Filter Class | Filter Type | Filter Characteristic | Program Method | Lowest Cutoff (Hz) |
Highest Cutoff (kHz) |
VSUPPLY (Dual) (±V) |
VSUPPLY (V) |
Oper. Temp. (°C) |
Price | |||||
| max | min | Dual | See Notes | ||||||||||||||
| MAX291 | 1 | 8 | Switched Cap | Lowpass | Butterworth | Clock | 0.1 | 25 | 5 | 5 |
|
$2.95 @1k | |||||
| MAX292 | Bessel | 25 | $2.95 @1k | ||||||||||||||
| MAX295 | Butterworth | 50 | $2.95 @1k | ||||||||||||||
| MAX296 | Bessel | 50 | $2.95 @1k | ||||||||||||||
| See All Active Filters (50) | |||||||||||||||||
| Diagram |
 Typical Operating Circuit |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
