MAX7420CUA+

MAXIM INTEGRATED PRODUCTS  MAX7420CUA+  开关电容滤波器, Butterworth, 低通, 5th, 1, 4.5 V, 5.5 V, µMAX

The is a 5th order low pass, switched capacitor filter in 8 pin µMAX package. This butterworth filters provides a maximally flat pass band response, making them ideal for instrumentation applications that require minimum deviation from the DC gain throughout the pass band. It operates with a 100:1 clock to corner frequency ratio. Two clocking options are available on this device, self-clocking through the use of an external capacitor or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC output level. It uses an alternative approach which is to emulate a passive network using switched-capacitor integrators with summing and scaling. It is used in DAC post filtering, air-bag electronics and CT2 base stations.

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Supply voltage range is 4.5V to 5.5V

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Operating temperature range from 0°C to 70°C

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Typical corner frequency range from 0.001KHz to 30KHz at VIN = 4Vp-p

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Clock to corner tempco of 10ppm/°C, typical internal oscillator frequency is 110KHz

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Typical supply current is 3.4mA operating mode, no load

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Typical shutdown current is 0.2µA