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上传时间： 2022-06-18
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随着数字信号处理技术和数字电路工作速度的提高，以及对于系统灵敏度等要求的不断提高，对于高速、高精度的ADC、DAC的指标都提出了很高的要求。比如在移动通信、图像采集等应用领域中，一方面要求ADC有比较高的采样率以采集高带宽的输入信号，另一方面又要有比较高的位数以分辨细微的变化。因此，保证ADC/DAC在高速采样情况下的精度是一个很关键的问题。ADC/DAC芯片的性能测试是由芯片生产厂家完成的，需要借助昂贵的半导体测试仪器，但是对于板级和系统级的设计人员来说，更重要的是如何验证芯片在板级或系统级应用上的真正性能指标。ADC的主要参数ADC的主要指标分为静态指标和动态指标2大类。静态指标主要有：Differ ential Non-Li nearity（DNL）ntegral Non-Li nearity（INL）Of fset Error ull Scale Gain Error动态指标主要有：
上传时间： 2022-06-19
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這包 BSP 支持了NUC970 系列芯片. 新唐科技的 NUC970 系列芯片是以 ARM926EJS 為核心的系统级單芯片. 包含了 16kB I-Cache 以及 16kB D-Cache 以及MMU 記憶體管理模塊. 最高支援到 300MHz 的頻率, 並且提供了豐富的外設接口周邊. 有USB 快速Host/Device, SDHC, 支援TFT LCD介面, 網路接口 和I2S audio介面, 有11 組UART…等. 並可以由 NAND flash, SPI Flash 開機.
标签： NUC970
上传时间： 2022-06-23
上传用户：slq1234567890
STM32F驱动L6470 ■ Operating voltage: 8 - 45 V■ 7.0 A out peak current (3.0 A r.m.s.)■ Low RDS(on) Power MOSFETs■ Programmable speed profile and positioning■ Programmable power MOS slew rate■ Up to 1/128 microstepping■ Sensorless stall detection■ SPI interface■ Low quiescent and standby currents■ Programmable non-dissipative overcurrentprotection on high and low-side■ Two levels of overtemperature protection
标签： l6470
上传时间： 2022-07-25
上传用户：kingwide
・This is a high sensitivity type of Nicera Hall element using evaporated InSbfilm.・It performs effectively in low magnetic fields due to the high sensitivity.・The input and output resistance values are suitable for transistor circuitsBrushless motors・DVD drive, CD-ROM drive, floppy disk drive・Other small precision motors・Non-contacting magnetic sensors・Position sensors, rotation sensors, current sensors・Magnetic flux sensors other than those above
标签： nhe520f
上传时间： 2022-07-26
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This is a high sensitivity type of Nicera Hall element using evaporated InSbfilm.It performs effectively in low magnetic fields due to the high sensitivity.The input and output resistance values are suitable for transistor circuits.Sip type packageApplications Brushless motorsPosition sensors, rotation sensors, current sensorsNon-contacting magnetic sensorsCurrent sensorsMagnetic flux sensors other than those above
上传时间： 2022-07-26
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