MAX297CSA+

MAXIM INTEGRATED PRODUCTS  MAX297CSA+  开关电容滤波器, Elliptic, 低通, 8th, 1, 4.75 V, 11 V, NSOIC

The is an 8th order, low pass, elliptic switched capacitor filter in 8 pin NSOIC package. This filter set up with corner-frequencies ranging from 0.1Hz to 50KHz. It provides -80dB stopband rejection and a sharp roll-off with a transition ratio of 1.5. The fixed response of this device simplifies the design task to corner-frequency selection by setting a clock frequency. An external capacitor is used to generate a clock using the internal oscillator or an external clock signal can be used. An uncommitted op-amp non-inverting input grounded is provided for building a continuous-time low pass filter for post-filtering or anti-aliasing. Steep roll-off and high order make this filter ideal for anti-aliasing applications that require maximum bandwidth and for communication applications that require filtering signals in close proximity within the frequency domain.

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Operate with a single +5V supply or dual ±5V supplies

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Operating temperature range from 0°C to 70°C

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Clock to corner frequency ratio is 50:1

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Supply current is 15mA at dual ±5V supply and 7mA at single 5V supply

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Passband ripple is 0.23dB

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THD plus noise is -77dB

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Clock oscillator frequency is 35KHz