Texas Instruments TMUX646EVM, Руководство пользователя

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2. Power the board by attaching a 1.65 V – 5.5 V power supply, current limited to 25 mA, with the positive
terminal attached to TP33 or TP34 at the top right of the board under the label U1 VDD . Attached the
negative terminal to TP35 or TP36 at the top right of the board above the label GND . The TMUX646 is now
powered. To power U2, attach the positive power terminal to TP39 or TP40. Figure 5-1 below shows the test
points circled in red.
TMUX646EVM Power Connections for U1 and U2. Both IC pads share the same ground connection
Figure 5-1. TMUX646EVM Power Connections for U1 and U2.
3. This EVM comes with shunts to connect the jumpers – The jumpers have three pins and are set up in the
following way.
Table 5-2. 3-Pin Header: Signal to Pin Matrix
Position 1 Position 2 Position 3
GND Floating VDD
With the EVM in the same orientation (as shown in Figure 4-1 ), the jumpers and their positions are oriented
according to Table 5-3 . All headers have their respective 2nd pin in the center with a pin above and pin
below. This is the second position of the header.
Table 5-3. Jumper ID to EVM Orientation Matrix
Jumper ID IC ID Position 1 – (GND) Position 3 – (VDD)
J1 – J16 U1 LEFT RIGHT
J17 – J30 U1 RIGHT LEFT
J31, J32 U1 RIGHT LEFT
J33, J34 U2 BOTTOM TOP
4. Next, please refer to Table 5-4 below to prepare the EN and SEL pins to configure the channels.
www.ti.com EVM Setup
SCDU025 – MAY 2021
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TMUX646EVM User's Guide 7
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