Create a design and simulate using EE-Sim tools: MAX7421EUA-T
The MAX7418–MAX7425 5th-order, low-pass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7418–MAX7421) or +3V (MAX7422–MAX7425) supply. These devices draw only 3mA of supply current and allow corner frequencies from 1Hz to 45kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces supply current to 0.2μA. Two clocking options are available: 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. The MAX7418/MAX7422 deliver 53dB of stopband rejection and a sharp rolloff with a 1.6 transition ratio. The MAX7421/MAX7425 achieve a sharper rolloff with a 1.25 transition ratio while still providing 37dB of stopband rejection. The MAX7419/MAX7423 Bessel filters provide low overshoot and fast settling, and the MAX7420/MAX7424 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task of selecting a clock frequency.
特性
- 5th-Order, Lowpass Filters
- Elliptic Response (MAX7418/MAX7421/MAX7422/MAX7425)
- Bessel Response (MAX7419/MAX7423)
- Butterworth Response (MAX7420/MAX7424)
- Clock-Turnable Corner Frequency (1Hz to 45kHz)
- Single-Supply Operation
- +5V (MAX7418–MAX7421)
- +3V (MAX7422–MAX7425)
- Low Power
- 3mA (Operating Mode)
- 0.2μA (Shutdown Mode)
- Available in 8-Pin μMAX? Package
- Low Output Offset: ±4mV
应用领域
- ADC Anti-Aliasing
- CT2 Base Stations
- DAC Post-Filtering
- Speech Processing
(产品图片: Diagram)
Технические параметры
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Number of Channels
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1
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Cutoff Frequency
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30 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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Стиль крепления
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SMD/SMT
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Package / Case
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uMAX-8
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Упаковка
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Reel
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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
MAX7421EUA-T Datasheet
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MAX7421 data sheet for guidance
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