SLLU322A September 2020 – October 2022 ISO1640
Note that this EVM is for operating-parameter performance evaluation only and not designed for isolation voltage testing. Any voltage applied above the 5.5-V maximum recommended operating voltage of the isolators may damage the EVM.
This section describes the setup and operation of the EVM for parameter-performance evaluation. Figure 4-1 shows the basic setup of the EVM with two power supplies needed to evaluate isolator performance. Power this Evaluation Module by connecting voltages to Vcc1 and Vcc2 that are within the Recommended Operating Range in the ISO164x device datasheet. Typical voltage levels for the Vcc1 and Vcc2 supplies are 3.3V and 5V. Separate power supplies can be used to provide each supply voltage, and they do not need to have the same value. If both sides are to be evaluated at the same supply voltage, only one power supply is required and can power both sides of the EVM.
Although the ISO1640 and ISO1641 devices feature bidirectional data channels, the devices perform optimally when side 1 (SDA1 and SCL1) is connected to a single controller or node of an I2C network while side 2 (SDA2 and SCL2) is connected to the I2C bus. Please note that if the ISO1641 is used, providing an input signal on the SCL2 pin does not yield any changing output on SCL1: SCL1 remains pulled up to Vcc1
Table 4-1 shows the information on jumper configurations for basic tests
Label | Description |
---|---|
U1 | ISO164xD,by default populated as ISO1640D |
U2 | ISO1640DW/ISO1641DW,by default not populated |
P1 | 2-pin jumper for Side 1 power supply, Vcc1 |
P2 | 2-pin jumper for Side 2 power supply, Vcc2 |
P3 | 3-pin jumper to Vcc1, GND1, and SDA1 |
P4 | 3-pin jumper to Vcc2, GND2, and SDA2 |
P5 | 3-pin jumper to Vcc1, GND1, and SCL1 |
P6 | 3-pin jumper to Vcc2, GND2, and SCL2 |