Datasheet

BUF08630EVM Hardware Overview

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3.3 Connecting the Hardware

To connect the two PCBs of the BUF08630EVM together, gently push on both sides of the DSUB

connectors (as shown in Figure 6). Note that the USB_DIG Platform board has two DSUB connectors;

either may be used. Make sure that the two connectors are completely pushed together; loose

connections may cause intermittent operation.

3.4 Connecting Power

After the two parts of the BUF08630EVM are conjoined, connect a +9V wall supply to the USB_DIG

Platform board, as Figure 6 shows. Always connect power before connecting the USB cable. If you

connect the USB cable before connecting the power, the computer will attempt to communicate with an

unpowered device that will not be able to respond.

Figure 6. Connecting External Power to the EVM

In addition, the BUF08630_Test_Board also requires two external dc power sources. These sources are

not included with the kit, and the respective voltage of each source may differ depending on your specific

testing needs. One source will be used to provide dc supply voltage to the BUF08630_Test board; the

other will be used to deliver half that value to HV

, also on the BUF08630_Test_Board.

For example, if V

(terminal T4) is connected to a +12V dc external supply, HV

(terminal T5) should be

connected to a separate +6V dc external supply.

BUF08630EVM User Guide and Software Tutorial SBOU091–September 2010

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