# help for the choice of the DA！！

Hello，I'm finding a DA satifing the follow factors:

a) can garantee the width of signal is 500ns~20us，and the repetition rate  of 10K~50KHz

b) can garantee the amplitude of the signal is 0V~4V

Please help me,thank you!

Parents
• Hi ,

What do you mean by "width of the signal"?

Do you have any other requirements such as digital interface (SPI vs i2c) and channel counts?

Cheers,

Ivan

• Hi,thank you for your reply! The "width of the signal" is the modulation signal that I want the DA to output. The signal  consists different amplitude square signals,and  likes modulation of the sine signal  and square signal.

I need 8 channels of  the modulation signals, and the delay time of the any two-way signals of 6 channels  should not exceed 20ns.  Now I'm finding the method to acheive it.

Can you help me to acheive it and offer the reference plan of it ?

Thank you!!

Reply
• Hi,thank you for your reply! The "width of the signal" is the modulation signal that I want the DA to output. The signal  consists different amplitude square signals,and  likes modulation of the sine signal  and square signal.

I need 8 channels of  the modulation signals, and the delay time of the any two-way signals of 6 channels  should not exceed 20ns.  Now I'm finding the method to acheive it.

Can you help me to acheive it and offer the reference plan of it ?

Thank you!!

Children
• Hi,

Sorry I was not able to comprehend what you want to do. Can you provide a block diagram and the signal you want to create together with the 500nS-20uS and 20nS requirement you mentioned, please?

Cheers,

Ivan

• 信号是实际一系列幅值不同的脉冲信号组成，包络看起来像正弦波，脉冲的宽度在500nS-20uS 之间，重频在1-10KHz之间可控，总共需要8路这样的信号，其中6路要求同步（任意两路之间的延迟时间不超过20ns）

• The signal is composed of a series of actual pulse signals with different amplitudes. The envelope looks like a sinusoidal wave. The width of the pulse is between 500nS-20uS and the repetition frequency is controllable between 1 and 10KHz. A total of 8 such signals are required. Six of them require synchronization (the delay time between any two channels is no more than 20ns).

• Hi,

Can you provide a picture of the waveform please?

You may also want to post your question in EZ for Chinese customers.

Cheers,

Ivan