Hello,
My customer has a question about ADS62P45.
[Q]
Is the inputs polarity (INP_A/INM_A, INP_B/INM_B) in the datasheet right ?
<datasheet>
19pin : INM_B
20pin : INP_B
29pin : INM_A
30pin : INP_A
<EVM>
19pin : INP_B
20pin : INM_B
29pin : INP_A
30pin : INM_A
<My comments>
I tested it on the following conditions in EVM.
- Parallel mode
- SCLK = 0 = (0dB Gain)
- SEN = 5/8*AVDD = (Straignt binaary and parallel CMOS output)
- CTRL1 = CTRL2 = CTRL3 = Low = (Normal operation)
- 19pin = VCM
- 20pin = Swept DC Voltage (from 0.5V to 2.5V)
- 29pin = VCM
- 30pin = Swept DC Voltage (from 0.5V to 2.5V)
The results are as follows.
0.5V : 0x3FFF
↓
I think the Pin placements in the EVM schematic are right and those in the datasheet are wrong.
Please check it and answer it.
Best Regards,
Hiroshi Katsunaga
