I'm currently considering the AD8283 device.
1. Reference Schematic : In the ADI Solution-RFICs_SB_vol10_issue5 sheet, ADI might have a reference schematic that composes BF531 and ADF4158, AD8283. Would share it with me?
2. PDWN : Active High? or Low?
3. Figure 27 in the AD8283 Datasheet, recommended HSM2812(Schottky diode), but, I cann't find HSM2812 datasheet. So, If possible, I want to get HSM8283's Datasheet.
4. Vref can be used as input/output in the datasheet. Is it possible to use Vref=1.75V?
5. What is below meaning? 'differential input sapn' means +/-IN pair? or just +IN or -IN port?
In the datasheet page 17(Voltage reference),
-. results in a full-scale differential input span of 2.0 V p-p for the ADC.
Hope to see an answer soon.