Create a design and simulate using EE-Sim tools: MAX7403CPA
The MAX7400/MAX7403/MAX7404/MAX7407 8th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7400/MAX7403) or +3V (MAX7404/MAX7407) supply. These devices draw 2mA of supply current and allow corner frequencies from 1Hz to 10kHz, making them ideal for low-power anti-aliasing and post-DAC filtering applications. They feature a shutdown mode that reduces the supply current to 0.2μA. 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 MAX7400/MAX7404 provide 82dB of stopband rejection and a sharp rolloff with a transition ratio of 1.5. The MAX7403/MAX7407 provide a sharper rolloff with a transition ratio of 1.2, while still delivering 60dB of stopband rejection. The fixed response of these devices simplifies the design task to corner-frequency selection by setting a clock frequency. The MAX7400/MAX7403/MAX7404/MAX7407 are available in 8-pin SO and DIP packages.
characterization
- 8th-Order Lowpass Elliptic Filter
- Low Noise and Distortion -82dB THD + Noise (MAX7400)
- Clock-Tunable Corner Frequency (1Hz to 10kHz)
- 100:1 Clock-to-Corner Ratio
- Single-Supply Operation
- +5V (MAX7400/MAX7403)
- +3V (MAX7404/MAX7407)
- Low Power
- 2mA (Operating Mode)
- 0.2μA (Shutdown Mode)
- Available in 8-Pin SO and DIP Packages
- Low Output Offset: ±5mV
Application Areas
- ADC Anti-Aliasing
- Air-Bag Electronics
- CT2 Base Stations
- Post-DAC Filtering
- Speech Processing
(Product Image: Diagram)
Technical Parameters
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Number of Channels
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1
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Cutoff Frequency
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10 kHz
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Supply Voltage Max
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5.5 V
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Supply Voltage Min
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4.5 V
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Maximum Operating Temperature
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+ 70 C
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Mounting Style
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Through Hole
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Package / Case
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PDIP N-8
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Minimum Operating Temperature
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0 C
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Operating Supply Voltage
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5 V
MAX7403CPA Datasheet
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MAX7403 data sheet for guidance
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