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.
语言 | 下载文件 | 备注 |
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英文 | MAX7418-MAX7425.pdf | Rev 0; 11/2000 |
Part Number | Filter Sections | Order Per Filter Section | Filter Class | Filter Type | Filter Characteristic | Program Method | Lowest Cutoff (Hz) | Highest Cutoff (kHz) | VSUPPLY (V) | Design Tools | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
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max | min | See Notes | |||||||||||
MAX7418 | 1 | 5 | Switched Cap | Lowpass | Elliptic | Clock | 1 | 30 | 5 | EE-Sim |
| µMAX/8 | $3.66 @1k |
MAX7419 | Bessel | 30 | 5 | µMAX/8 | $2.92 @1k | ||||||||
MAX7420 | Butterworth | 30 | 5 | µMAX/8 | $3.69 @1k | ||||||||
MAX7421 | Elliptic | 30 | 5 | µMAX/8 | $2.78 @1k | ||||||||
MAX7422 | Elliptic | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
MAX7423 | Bessel | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
MAX7424 | Butterworth | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
MAX7425 | Elliptic | 45 | 3 | µMAX/8 | $2.92 @1k | ||||||||
型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
---|---|---|---|---|---|
MAX7423CUA | 停止供货 | MAX7423CUA+ | µMAX,;8引脚;15.6mm² | 0°C至+70°C | RoHS/无铅:否 |
MAX7423CUA+ | 生产中 | µMAX,;8引脚;15.6mm² | 0°C至+70°C | RoHS/无铅:无铅 | |
MAX7423CUA+T | 生产中 | µMAX,;8引脚;15.6mm² | 0°C至+70°C | RoHS/无铅:无铅 | |
MAX7423CUA-T | 停止供货 | MAX7423CUA+T | µMAX,;8引脚;15.6mm² | 0°C至+70°C | RoHS/无铅:否 |
MAX7423EUA | 停止供货 | MAX7423EUA+ | µMAX,;8引脚;15.6mm² | -40°C至+85°C | RoHS/无铅:否 |
MAX7423EUA+ | 生产中 | µMAX,;8引脚;15.6mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX7423EUA+T | 生产中 | µMAX,;8引脚;15.6mm² | -40°C至+85°C | RoHS/无铅:无铅 | |
MAX7423EUA-T | 停止供货 | MAX7423EUA+T | µMAX,;8引脚;15.6mm² | -40°C至+85°C | RoHS/无铅:否 |