something seems strange. isn't the input range of the ADC IC :
Vin FSR pin14 low .590 to .730 Vpp
Vin FSR pin15 high .800 to .940 Vpp
page 11 of 46 of http://www.ti.com/lit/gpn/adc08d1520
I see +/-50 mV but thats for the common mode input.
On Thu, 9 Aug 2012, Tom Kuiper wrote:
The KatADC is based on the Texas Instruments ADC08D1520. It is an 8-bit
(255-level) ADC operating between +/- 50 mV (0.392 mV/step). The KatADC has a
20 dB amplifier (factor of 10 voltage gain). So this gives it an input range
of +/- 5 mV, or 0.0392 mV/step (39.2 uV/step). In the KAT RFI 16K
spectrometer code I see a count to mV scale factor of 3.93. I'm missing
something. Can anyone set me straight?
Thanks
Tom
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