Texas Instruments TPL0501EVM, Руководство пользователя, Страница: 5 / 15

out
C6
R12
TPL0501
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Operation
6.1 Voltage Reference Mode
Make sure the EVM is set up in Mode 1 as described in Section 3 . The TPL0501-100 U2 is used in the
adjustable voltage reference mode. Select the corresponding device from the GUI. Change the value the
DPOT using any of the methods described above. Measure the voltage on TP1 using a multimeter. You
will see the voltage change with the value of the TPL0501 resistance.
6.2 Variable Gain Mode
The variable gain mode is primarily intended to test the bandwidth of the TPL0501. After setting up the
EVM as described in
Section 3 , the circuit will look as follows:
Figure 2. TPL0501 Variable Gain
The capacitor C6 and the resistor R12 are unpopulated and should be set by the user. R12 will set the
possible gain values and C6 will keep the loop stable. Changing the value of the TPL0501 works the same
as described in the beginning of this section by selecting device TPL0501-100 U1.
5 SLIU007 – September 2011 TPL0501EVM User Guide
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