I have a question about Vlogic power supply.Question : Does VL need to be always less than VDD?
Our customer are using VDD=5V, VL=5V nomaly. but sometime VL > VDD.
In D/S of AD5260 ”ABSOLUTE MAXIMUM RATINGS”
VL to GND 0 V to +7 V
我搭了个数字电位器电路，期望使用Ad5260 数字电位器输出0v到12v的电压，我控制用的MCU的 gpio端口电压是3.3v的，vdd和A端输入电压为12v时不工作，改为5v时工作正常，难道SPI通信端口也要用12v电平？
#define AD5260_CS 5 //PF5
#define AD5260_SDI 3 //PF3
#define AD5260_CLK 4 //PF4
#define AD5260_SDO 6 //PF6
#define CS_L PORTF&=~(1<<AD5260_CS) //置CS为低电平，使能SPI接口…
I am struggling trying to think out a solution to design a transimpedance amplifier (TIA) which can convert 100 nA to 10 mA. This is 5 decades. I want to be able to amplify these to 1.5V minimum. (3V max).
I want to do most of the amplification in the…
Please show me how to use daisy chain of AD5262.
In data sheet, the discription is only AD5260 single digi-pot.
I think a procedure for writing is
Is this correct ?
Actually AD5260 and ADG1414 do have a VL input.
Besides, if I read the datasheets correctly, the ESD protection diodes could be forward biased if I supply any voltage higher than the conduction value of such diodes in the wrong order.
Also, even if…