Forum Post: RE: Using LM98725
Dear Hooman, I have read the datasheet again and its written that the master clock source for the CIS sensor will work Crystal Oscillator Mode but in my case I'm not using crystal oscillator. I'm...
View ArticleForum Post: DRV8662/DRV2667, MUX solution
Support team Customer ask us to suggest MUX solution that it selects 1 of multi piezo elements and the selected piezo is driven by DRV8662 or DRV2667 . His system requirement Peak-to-Peak Voltage =...
View ArticleForum Post: RE: drv2700EVM-HV500 multiple channels
Hi Nick, Sure thing. I'll be reaching out to you today to set some time to talk. Regards, Leo Rodriguez ARP - Haptics
View ArticleForum Post: RE: Waveform generator and synthesizer
Hi Machida, Apologies for the delayed response. Let's go through your points: 1. Here is my understanding about this device. I believe that this understanding is correct from your answer. Yes, you can...
View ArticleForum Post: RE: Using LM98725
This is the clock signal I'm getting from the chipm. Blue one is the INCLK 3MHz and Yellow is PHIA1
View ArticleForum Post: RE: TX_SDK_V1 ultrasound Tx Evaluation kit broken?
Hi Shuai Na, The power up sequence for the LM96551 on the TX-SDK-V1 is essential, or the chip will get damaged . I think the other devices on the EVM are not affected. If you can send me the EVM plus...
View ArticleForum Post: RE: DRV8662/DRV2667, MUX solution
Hi Tamio, We recommend using high voltage FETs for this type of switching.
View ArticleForum Post: DRV2665 Override Bit
Hello, I am trying to control a DRV2665 using an Arduino Due board. I have implemented the application circuit listed in the datasheet on page 20 with the suggested components (chip is mounted to a...
View ArticleForum Post: RE: Using LM98725
Hi Martin I've started reviewing your Registers data.txt file and noticed that the Writes you're intending to do to Page 0, Register 0 may actually be Reads. The SPI transfer value sent for those...
View ArticleForum Post: RE: Waveform generator and synthesizer
Hi Leo-san, Thank you for your reply. I need to send customer information to discuss deeply. So please discuss internally. I will send you email later. BR, Machida
View ArticleForum Post: DRV8662 with 2 piezo
Hi, My customer would like to drive 2 PZTs with one DRV8662 by changing something FET switch, for example. Please look into the block diagram I attached. This solution is using FET like CSD19534 as...
View ArticleForum Post: RE: Using LM98725
Hi Jim, Yes you have interpreted it correctly because I was reading the Register 0 at that time but I have tried it with 0x2023 and the result is same. I'm getting the same signal from both PHIA1 and...
View ArticleForum Post: DRV2700EVM-HV500 for piezo with big capacitance
I am new to this area and has been searching for the answer for about one week's time. Hope that I can get some help here. Currently I'm trying to drive a piezo with a capacitance of 7.2 micro fala...
View ArticleForum Post: RE: DRV2700EVM-HV500 for piezo with big capacitance
Hi Chao, Can you submit screenshots of the noisy and clean signals that you are measuring? Regards, Leo Rodriguez ARP - Haptics
View ArticleForum Post: RE: DRV8662 with 2 piezo
Hi Tamuki, Although we really haven't tried that specific implementation, it would be the way we'd do it. Please make sure the applied voltage does not exceed the drain-to-source- voltage rating of the...
View ArticleForum Post: RE: DRV2665 Override Bit
Hi Chris, From a hardware point of view, everything looks fine: VDD, IN+ and IN-, capacitance of the piezo load. What are the values of R1 and R2? Reading 0x40 from register 0x02 indicates that the...
View ArticleForum Post: RE: DRV2665 Override Bit
Thanks Leo, R1 = 399kohm R2 = 18.73kohm Rext = 13.75kohm So I am using the lowest gain setting at the moment. I originally had it set for the 100V setting with the same result. Here is my init...
View ArticleForum Post: RE: DRV2665 Override Bit
Hi Chris, Yes, everything seems to be ok until enabling override. Refer to subsection 7.3.4 of the datasheet for information regarding EN_OVERRIDE. Try enabling override first and then setting the rest...
View ArticleForum Post: RE: Using LM98725
Hi Martin Your configuration settings (other than Page 0, Register 0) look OK, but I'm not sure the configuration sequence you are using is completely correct. Please confirm you are now following the...
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