Tool/software:
Hello Ti,
Sorry, but I have additional questions about LM98725 PGA gain and CLK system .
1)
Regarding Maximum Gain/Minimum Gain in "PGA SPECIFICATIONS" at the bottom of page 9,
the test conditions for Maximum Gain/Minimum Gain are listed as CDS Gain x1,
but can we assume that the Min/Max values will be similar for CDS Gain x2?
Also, when calculating the Min/Typ or Max/Typ ratio of Maximum Gain/Minimum Gain,
it is roughly +/-7% (see below), but is it okay to think that this range applies
for any Gain setting?
By the way, we use PGA Gain in the range of 0.9 to 1.0.
About calculating the Min/Typ or Max/Typ ratio
Maximum Gain / min : 7.7 / 8.3 = 0.93(-7%) , max : 8.8 / 8.3 = 1.06(+6%)
Minimum Gain / min : 0.58/0.62 = 0.94(-6%) , max : 0.67/0.62 = 1.08(+8%)
2)
Regarding the System CLK, where is the ADCCLK and PIXCLK that described in
the data sheet located in Figure 5. Clock System Block Diagram on page 18?
Thanks,
Katagiri