MAX7420CUA+
数据手册.pdfMAXIM 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