MAX7403CPA+

MAX7403CPA+ is an 8th-order, lowpass, elliptic, switched-capacitor filter (SCF). Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking for tighter cutoff-frequency control. In addition, an offset adjustment pin (OS) allows for the adjustment of the DC output level. The MAX7403 provides a sharper rolloff with a transition ratio of 1.2, while still delivering 60dB of stopband rejection. The fixed response of this device simplifies the design task to corner-frequency selection by setting a clock frequency. Suitable for ADC anti-aliasing, speech processing, post-DAC filtering, air-bag electronics and CT2 base stations applications.

• Operate from a single +5V
• Clock-tunable corner frequency (1Hz to 10kHz)
• 38kHz typ internal oscillator frequency at COSC = 1000pF
• 100:1 clock-to-corner ratio
• 10ppm/°C clock-to-corner tempco
• 10mVp-p clock feedthrough
• Low power: 2mA (operating mode) and 0.2µA (shutdown mode)
• Low output offset is ±5mV
• Temperature range from 0 to +70°C
• 8 pin plastic DIP package

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