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AN221E04 Datasheet – Dynamically Reconfigurable FPAA With Enhanced I/O
DS030100-U006a - 21 -
Measured THD for input and output cells (with a differential input 4V p-p, 660Hz)
Settings
Distortion in dB
Input cell with anti-aliasing filter set at fC = 470 kHz
81.6
Output cell with differential to single ended converter and output smoothing filter set at fC = 470 kHz
82
Signal and Noise for a representative CAM – Gaininv CAM (input signal of 700mV p-p differential at 10 kHz)
Signal to Noise: 108 dB, at 528 kHz, 3Hz BW
As above, zoom to lower frequency
THD for a representative CAM –
Gaininv CAM (with a differential
input 4V p-p, 660Hz)
CAM Clock
Frequency
Distortion
(dB)
250 KHz
80.00
1 MHz
72.83
2 MHz
69.22
4 MHz
73.48
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