2. EVB Test
To run the test, follow the instructions in the following sections.
2.1 Required Equipment
The following equipment is required to demonstrate the evaluation board:
• 1 digital multimeter
• 1 dc power supply: 0 – 5 V
• 1 dc power supply: 0 – 15 V
• 1 1k – 2k 0.25 W resistor
• Assorted cables and leads as necessary to connect equipment to EVB
• Si875x Evaluation Board (board under test)
• Si827x Evaluation Board User's Guide (this document)
2.2 EVB Test
To run the test, follow the instructions in the following sections.
2.2.1 DC Supply Configuration
1. Set the 5 V supply to output 5 VDC.
2. Turn OFF the supply and connect the positive lead to J1 pin1.
3. Connect the negative lead to J1 pin 2.
4. Set the 15 V supply to output 15 VDC.
5. Turn OFF the supply and connect the positive lead to J3 pin 1.
6. Connect the negative lead to J3 pin 2.
7. Connect the positive lead of the multimeter, and one end of the resistor, to J4 pin 1.
8. Connect the negative lead of the multimeter, and the other end of the resistor, to J4 pin 2.
9. Turn ON the dc power supplies.
10. Ensure that the current draw is less than 25 mA in any of the supplies. If it is larger, this indicates that either the board or Si875x
has been damaged or the supply is connected backwards.
2.2.2 Test the Si875x DC Switch
1. Place a shunt between pins 2 and 3 of J2 (Si8751) or J5 (Si8752) and JP6.
2. The multimeter should measure 0 V.
3. Move the shunt from pins 2 and 3 to pins 1 and 2 on J2 (Si8751) or J5 (Si8752).
4. The multimeter should now measure 15 V.
5. Move the shunt back to pins 2 and 3.
6. Turn off the dc supplies.
2.2.3 Test the Si875x AC Switch
1. Move the 15 V supply positive lead to J6 pin1 and the negative lead to J6 pin 2.
2. Move the multimeter positive lead, and the resistor lead, to J7 pin 1 and the negative lead, and the resistor lead, to J7 pin 2.
3. Move the shunt from JP6 to JP8.
4. Turn on the dc supplies. Again, there should be no current draw greater than 25 mA.
5. The multimeter should measure 0 V.
6. Move the shunt on J2 (Si8751) or J5 (Si8752) from pins 2 and 3 to pins 1 and 2.
7. The multimeter should now measure 15 V.
UG246: Si875x User's Guide
EVB Test
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