ADG3247电平转换问题!
我现在用ADG3247用于电平转换,SEL接到GND,A口为3.3V输入,B口为1.8V输出;
这样子连接有问题吗?
想问一下,A口和B口需要接上拉电阻吗?
Dear Sir:由于现在有很多新的FPGA GPIO串口只有1.8V,但是在旧有的系统架构上或是MCU大多数GPIO串口电压都在3.3V,所以我有在评估ADG3247 Level Translating 来进行两端的GPIO 串口的电平转换,但是看了ADG3247 Datasheet有很多的疑问在这边请问专家
Q1:ADG3247 Version:0 Datasheet 里面都没有提到A0~A15 与B0~B15的电平位准,请问如果GPIO3.3V与GPIO1.8V的电平,A0~A15要接哪一组电压…
Hello,
Our customer examines use of ADG3247, and there is a question.
1,The customer intends to input the same signal into two input. The outputting device of this signal is the following specifications, is there a problem? OUTPUT_CAPACITANCE:10pF
Hi ADI FAE,
非常抱歉打扰你们!
我们这个BUS是单端36个信号,TX包含一个200MHZ的clock, 17个200Mbps 的data,共有18个信号;RX包含一个200MHZ的clock, 17个200Mbps 的data,共有18个信号。
TX和RX可以分开用两个或多个chip。
在你们网站上看到ADG3247这个系列满足我们速率上的需要。但是发现
ADG3247在3.3V与2.5V 转换时是双向的,每个方向都是input/output
但是在用于2.5v转1.8V
ADG3247 支持1.8到3.3升压的电平转换么 速率支持500MSPS
Hi,
Thank you for your reply.
My setup is very simple.
GPIO of nucleo-64 STM32F401RE connected directly to ADG3247.
I debug using scope on the ADG3247 output.
The GPIO configuration is no pull up or pull down.
I am using toggling the output by myself…
Hi Zach,
When not active, you may set the BE pin of the ADG3247 to a minimum of:
This information can be seen on page 2 Specifications Section of the ADG3247 Datasheet, Input High…
Hello all,
I'm working on a project in which I use two types of digital potentiometers (AD5254(I2C), and AD5235(SPI)). The potentiometers have the supply voltages of (VDD: +2.5V, VSS: -2.5V). And I use a microcontroller that's supplied by 3.3V…
Hi Stephen,
Thanks of your reply,
Might we adopt ADG3247 for 1.8V to 3.3V Translation?
Regard,
Kevin