I bough a HSC-ADC-EVALCZ capture  board  plus a AD9251 EVL. I wonder whether the start sampling signal is told to AD9251 through SPI? I need to output this signal through J5 and J7 simultaneously.

Hello,

I copied and pasted part of register map from AD9251 datasheet.

Could you explain more about drive strength and stripe?

How does an output congiured witn bigger stripes work?

Best Regards,

Mack

Hello,

AD9251 VCM voltage in my circuit is set to the 1.2V instead of 0.9V. In datasheet it is advised to set VCM to AVDD/2 which is 1.8V/2 in my case. I used "differential double balun input configuration" (Figure 44 in AD9251 datasheet rev.B) in my…

Dears,

I am using the AD9251-20, we use the SPI configure as below:

TYPE ADDR_matrix_index is array (0 to 11) of std_logic_vector(15 downto 0); 
signal W_ADDR_Var : ADDR_matrix_index;
constant W_ADDR : ADDR_matrix_index:=( x"0000", x"0005", x"00ff", x"000b…

Dear Sir/Madam:

We are designing ADC using dual ADC AD9251 part.  We configured this AD9251 using fixed internal reference (Vref = 1.0V).

The question we have is that if we want to configure AD9251 without SPI, we can do the following:

CSB <-> AVDD…

Hello!

Please help me!

I want to set AD9251 to interleaved output mode. all I need to do is set bit 5 of register "Output mode" (0x14)?

Hello,

Please help me.

I have some question about interleaved output mode.

1. To enable output mux, all I need to do is set bit 5 of register "Output mode" (0x14)?

2. Once the output mux of AD9251 is enabled, the two digital output (A/B…

Hi all,

Anyone know how to connect AD9251 with Stm32F746g using CubeMX via SPI?

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI5_Init(void);

hspi5.Instance = SPI5;
hspi5.Init.Mode = SPI_MODE_MASTER;
hspi5.Init.Direction…

When running the AD9251 with interleaved output data multiplexed onto a single bus, the respective A channel or B channel data is output for only ½ the clock period. 

In this case, should we expect to see a rising edge on DCOA to indicate valid Channel…

I bought a HSC-ADC-EVALCZ capture board plus a AD9251 EVL. In my project, the signal frequency which need to be sampled is below 30KHz.

Now, I have a problem. It is found that the signal frequency below 76KHz could not be sampled accurately; I have…