ADC12DJ3200: ADC12DJ3200 - Operate in JMODE14

Rajesh khanna

Intellectual 690 points

Part Number: ADC12DJ3200

Hi,

Pls clarify the convertor operation in JMODE14 - Fs at 3.2 GSPS

Targeted signal at 2.6 plus/minus 50 MHz.

What rate the 4 lanes to be operated - dual channel operation required.

Regards,

Rajesh khanna

over 2 years ago

0 Rajesh khanna over 2 years ago

Intellectual 690 points

it is 2.6 GHz

0 Neeraj Gill over 2 years ago in reply to Rajesh khanna

TI__Mastermind 20541 points

Hi Rajesh,

You can run ADC with 3.2GHz clock which corresponds to 8Gpbs of lane rate.

Regards,

Neeraj

0 Rajesh khanna over 2 years ago in reply to Neeraj Gill

Intellectual 690 points

hi Neeraj,

can you please break up for the 8 gbps.

assuming 2 channel @ 3.2 Gsps (Overall 6.4 GSPS)

with 8b/10b i.e x 1.25 = 8 Gsps.

for JMODE14 , how to account for down sampling rate and arrive at lane rate.

Regards,

Rajesh khanna

0 Neeraj Gill over 2 years ago in reply to Rajesh khanna

TI__Mastermind 20541 points

Hi Rajesh,

An easy way to calculate the lane rate from sampling frequency is use the R parameter in Table 18. ADC12DJ3200 Operating Modes and multiple it with the sampling clock frequency.

For example the table below the R parameter for JMODE 14 is 2.5 and with 3.2Gsps give you 8Gbps.

Regards,

Neeraj

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ADC12DJ3200: ADC12DJ3200 - Operate in JMODE14