Other Parts Discussed in Thread: AMC1303M2520, , TMS320F28377S
Customer did a performance test with AMC1303M2520/AMC13032510 and AMC1306M25. They found the AMC1306 coming with noise problem on sampling wavefrom. We would like to know what happened is? and is there any suggestion on surrounding circuit to improve it? We'd prefer to use AMC1306
Application: PDU
DSP: TMS320F28377S
Customer: TW
Code Setting in the C2000
Sinc filter type = sinc3
Modulator data rate = 20 MHz (AMC13032520)
OSR = 256
MODULATOR MODE [MOD] = MODE1(The modulator clock is running with half of the modulator data rate.)
Data rate of Sinc Filter = 20 MHz / 256 / 2 = 39.1 K samples / sec
b)
Sinc filter type = sinc3
Modulator data rate = 10 MHz (AMC13032510)
OSR = 256
MODULATOR MODE [MOD] = MODE1(The modulator clock is running with half of the modulator data rate.)
Data rate of Sinc Filter = 10 MHz / 256 / 2 = 19.5 K samples / sec
Sampling waveform
System:
Circuit: