ZHCSO34F April 2011 – August 2021 DS80PCI402
PRODUCTION DATA
The DS80PCI402 has an optional internal voltage regulator to provide the 2.5-V supply to the device. In 3.3-V mode, the VIN pin = 3.3 V is used to supply power to the device and the VDD pins should be left open. The internal regulator will provide the 2.5 V to the VDD pins of the device and a 0.1-µF capacitor is needed at each of the five VDD pins for power supply de-coupling (total capacitance should be ≤ 0.5 µF), and the VDD pins should be left open. The VDD_SEL pin must be tied to GND to enable the internal regulator. In 2.5-V mode, the VIN pin should be left open and 2.5 V supply must be applied to the VDD pins. The VDD_SEL pin must be left open (no connect) to disable the internal regulator.
The DS80PCI402 can be configured for 2.5-V operation or 3.3-V operation. The lists below outline required connections for each supply selection.
3.3-V Mode of Operation
2.5-V Mode of Operation