MAX7427：五阶、低通、椭圆函数、开关电容滤波器
业内功耗最低、尺寸最小的5阶低通滤波器
The MAX7426/MAX7427 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7426) or +3V (MAX7427) supply. The devices draw only 0.8mA of supply current and allow corner frequencies from 1Hz to 12kHz, 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 MAX7426/MAX7427 deliver 37dB of stopband rejection and a sharp rolloff with a transition ratio of 1.25. Their fixed response limits the design task to selecting a clock frequency.
关键特性
| MAX7426、MAX7427：典型工作电路 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX7426-MAX7427.pdf | Rev 0; 06/2000 |
关键参数
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max | min | See Notes | |||||||||||
| MAX7426 | 1 | 5 | Switched Cap | Lowpass | Elliptic | Clock | 1 | 9 | 5 | EE-Sim |
|
| $1.44 @1k |
| MAX7427 | 12 | 3 |
| $1.38 @1k | |||||||||
技术资料
相关产品
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX7427CPA | 停止供货 | MAX7427CPA+ | PDIP(N),；8引脚；79.7mm² | 0°C至+70°C | RoHS/无铅：否 |
| MAX7427CPA+ | 生产中 | PDIP(N),；8引脚；79.7mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX7427CUA | 停止供货 | MAX7427CUA+ | µMAX,；8引脚；15.6mm² | 0°C至+70°C | RoHS/无铅：否 |
| MAX7427CUA+ | 生产中 | µMAX,；8引脚；15.6mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX7427CUA+T | 生产中 | µMAX,；8引脚；15.6mm² | 0°C至+70°C | RoHS/无铅：无铅 | |
| MAX7427CUA-T | 停止供货 | MAX7427CUA+T | µMAX,；8引脚；15.6mm² | 0°C至+70°C | RoHS/无铅：否 |
| MAX7427EPA | 停止供货 | MAX7427EPA+ | PDIP(N),；8引脚；79.7mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX7427EPA+ | 生产中 | PDIP(N),；8引脚；79.7mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX7427EUA | 停止供货 | MAX7427EUA+ | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX7427EUA+ | 生产中 | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| 型号 | 状况 | 推荐替代产品 | 封装：类型 引脚 占位面积封装图 编码/变更 * | 温度 | RoHS/无铅？ |
| MAX7427EUA+T | 生产中 | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX7427EUA-T | 停止供货 | MAX7427EUA+T | µMAX,；8引脚；15.6mm² | -40°C至+85°C | RoHS/无铅：否 |
- MAX7426-MAX7427.pdf MAX7427
- Generating Switched-Capacitor-Filter Clocks MAX7490
- MAX7426-MAX7427.pdf MAX7427
