Create a design and simulate using EE-Sim tools: MAX7408EUA
The MAX7408/MAX7411/MAX7412/MAX7415 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7408/MAX7411) or +3V (MAX7412/MAX7415) supply. The devices draw only 1.2mA of supply current and allow corner frequencies from 1Hz to 15kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They can be put into a low-power mode, reducing 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. An offset-adjust pin allows for adjustment of the DC output level. The MAX7408/MAX7412 deliver 53dB of stopband rejection and a sharp rolloff with a transition ratio of 1.6. The MAX7411/MAX7415 achieve a sharper rolloff with a transition ratio of 1.25 while still providing 37dB of stop-band rejection. Their fixed response limits the design task to selecting a clock frequency.
characterization
- 5th-Order, Elliptic Lowpass Filters
- Low Noise and Distortion: -80dB THD + Noise
- Clock-Tunable Corner Frequency (1Hz to 15kHz)
- Single-Supply Operation
- +5V (MAX7408/MAX7411)
- +3V (MAX7412/MAX7415)
- Low Power
- 1.2mA (operating mode)
- 0.2μA (shutdown mode)
- Available in 8-Pin μMAX?/DIP Packages
- Low Output Offset: ±4mV
Application Areas
- ADC Anti-Aliasing
- 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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15 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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+ 85 C
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Mounting Style
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SMD/SMT
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Package / Case
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uMAX-8
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Minimum Operating Temperature
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– 40 C
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Operating Supply Voltage
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5 V
MAX7408EUA Datasheet
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MAX7408 data sheet for guidance
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