• ### Filter Wizard Design Equation(s)

I am working on a 500 kHz active filter and turned to the filter wizard of Analog Devices. Given a center frequency of 500 kHz, 20 kHz passband, gain of 10 dB, it came up with a design using three AD8055 op-amp sections (attached below).

Analog Devices…

• ### RE: Analog output interface for HS-DACs

At lower frequencies, an op amp can be used to acheive differential-single ended conversion along with some gain if needed. For example, one recommended configuration for the AD9740 is shown below. Suggested op-amps for the interface are AD8055, AD8057…

Hi,

I have some problems for designing a circuit based on AD9218. This is my first time to learn this IC, and make PCB layout by myself.

The datasheet of AD9218 shows that pins 13,30,31,48 are the same pin for Analog Supply (Vd), but they aren't…

• ### RE: 超级干货——DAC接口基本原理

DAC模拟输出考虑因素

DAC的模拟输出可能是电压或电流。两者情况下，可能都需要知道输出阻抗。如果对电压 输出进行了缓冲，则输出阻抗将很低。而电流输出和未缓冲的电压输出将存在较高阻抗， 并还可能具有电抗性分量以及纯粹的电阻性分量。在有些DAC架构的输出结构中，输出阻 抗与DAC上的数字码字成函数关系，这点应会在数据手册中明确注明。

理论上，电流输出应当连接到电阻为零欧姆的地电位。在实际应用中，该输出将采用非零 阻抗和电压。“顺从性”标题下只是定义了该输出可耐受的电压偏差大小，端接电流输出 DAC时应当注意到此项技术规格…

• ### Is ADP2291 working as expected in the datasheet or its examples are fail?

Hello Everyone,

Im working on a battery charger circuit. I set completely the figure-22 and the figure-23 in the datasheet. So more than hundred try and later than weeks. The circuits are not working as expected. This part is important "The circuits are…