according to datasheet, the supply current of adp1055 is around 60mA. While, in my hardware, the supply current is around 120mA, which means when RES is floating(no internal reference for PLL), its still 60mA supply current.
Although the supply current is so large, the hardware can still work normally.
Besides, it should be noted, JTD outputs a square-wave voltage (0V-3.3V), whose frequency is around 8Hz.
Anybody observed this phenomenon before?