MCP37X10-200 12-Bit Single-Channel Evaluation Kit User’s Guide
DS50002511A-page 16
2016 Microchip Technology Inc.
The evaluation board’s power supplies can also be supplied by external voltages
directly to the power domains. This can be done by disabling the desired regulator
using the dip switch SW2 - Regulator Enable on the silkscreen. Then, a DC voltage can
be driven directly into the appropriate pin of header J16. Note that the even pins of the
J16 header are GND.
The power domains on the evaluation board may be merged, if needed. Specifically,
the 1.2VA and 1.2VD power domains may be merged by populating a ferrite bead on
FB10. Similarly, the 1.8VA and 1.8VD power domains may be merged by populating a
ferrite bead on FB11. In both cases, the digital regulators should be disabled using the
appropriate switches.
2.2.3
Evaluation Kit Set-Up
1.
Connect the evaluation board and the data capture card as shown in
2.
Power up both boards using the supplied 5V Power Supplies.
3.
Ensure that a clock input is connected or that a crystal oscillator is installed
correctly. Follow instructions in section
Section 2.2.4.1 “Optimizing the Clock
.
1:
Note: If this is done correctly, the CAL DONE LED will be ON. Otherwise,
the user should check the clock input or crystal oscillator for issues.
4.
Connect the data capture card to a computer using the provided USB cable.
5.
Press the Reset button on both boards.
6.
Run the Pipeline ADC Utility Software.
For help with troubleshooting the boards and operating the GUI, please refer to the
software’s supporting documentation.
WARNING
Avoid connecting a power supply with a voltage greater than 5V. Doing so can damage
the voltage regulators, requiring them to be replaced.
WARNING
Avoid applying an input signal while the board is powered off. This may damage the input
baluns! If a high second harmonic is seen, it is likely that these baluns need to be replaced.
