Part Number: ADC3644 Hello,
We are evaluating ADCs for a future project and would like to get more detailed information about the IIR filter present in the DDC blocks of the ADC3644.
Any futher information about the filter characteristics / specification…
Part Number: ADC3644 Other Parts Discussed in Thread: ADC3664 , I want to confirm that the input (differential) signal range on the ADC3644 is 2.25V. That's what the datasheet says, but the reference voltage is 1.6V, so I don't see how 2.25V is derived…
Part Number: ADC3644 Tool/software: I am using the ADC3644 in my design, paired with a low-pass filter and glitch filter as per the datasheet recommendations. However, I am observing beat frequencies in the ADC output that seem to correspond to the ADC…
Part Number: ADC3644 Tool/software: Hello, I am attempting to synchronize multiple ADC3644 and would like to know how and what signal to feed into the PDN/SYNC pins for complex decimation. I assume I must first configure it using SPI, then generate a…
Part Number: ADC3644 Tool/software: Hello, I have designed a fully differential amplifier that has an output termination equivalent to that as seen in section 8.3.1.2.3.1 (AC-coupled) of the datasheet. Disconnected, Vcm is ~900mV, however, once connected…
Part Number: ADC3644 Tool/software: Hello, I am attempting to use the RAMP test pattern function on the ADC3644 but cannot figure out what to write to each register, nor what the output pattern is supposed to look like. Currently I am writing the following…
Part Number: ADC3644 Tool/software: Hello, I am essentially attempting to design a ~1 MHz Bandwidth SDR (with I and Q outputs) and have not been able to develop a scheme to acquire the 16-bits x 2 (IQ) x 2 (Nyquist) x 1MHz = 64MHz of serial data. Currently…
Part Number: SK-AM64B Other Parts Discussed in Thread: ADC3644 , AM6442 , , SYSCONFIG Dear TI Support Team,
We are developing a long-range LiDAR/Ceilometer system and require assistance integrating the ADC3644 with the SK-AM64B (Sitara AM6442) evaluation…
Part Number: ADC3644 Other Parts Discussed in Thread: ADC3643 , I'm wondering if the ADC3644 (and the ADC3643 if it different) is monotonic. The datasheets do not mention monotonic explicitly, but it puts the DNL at 0.5 typical and max of 0.97, which…
Part Number: ADC3644 Hi team,
I use the ADC3644 with an external 1.6V reference. I attach the waveforms of each power supply and VREF. It will take some time for VREF to stabilize, but is there any problem as long as each power supply and VREF are stabilized…
