SLLSEK1B July 2014 – March 2018 ONET2804T
The ONET2804T is designed to operate from an input supply voltage range between 2.97 V and 3.47 V. There are a total of 8 power supply pads that must be connected for proper operation. VCCI1-4 are used to supply power to the input transimpedance amplifier stages and VCCO1-4 are used to supply power to the voltage amplifiers and output buffers. Each amplifier is powered up separately but there are some common internal connections for support circuitry such as the 2-wire interface. Therefore, if only one channel is being evaluated, all 8 supply pads must be connected. It is recommended to use two single layer ceramic (SLC) capacitors in the range of 270 pF to 680 pF for power supply decoupling. VCCI1, VCCI2, VCCO1 and VCCO2 should be bonded to one capacitor and VCCI3, VCCI4, VCCO3 and VCCO4 should be bonded to the other capacitor. Refer to Figure 42 and Figure 45 for reference.