Integration Manual

LISA-U2 series - System Integration Manual
UBX-13001118 - R25 Design-In Page 143 of 182
ESD category level, all the module pins that are externally accessible should be protected up to ±4 kV
for direct Contact Discharge and up to ±8 kV for Air Discharge applied to the enclosure surface.
The maximum ESD sensitivity rating of all the other pins of the module is 1 kV (Human Body Model
according to JESD22-A114F). Higher protection levels could be required if the relevant pin is externally
accessible on the application board. The following precautions are suggested to achieve higher
protection levels:
 USB interface: a very low capacitance (i.e. less or equal to 1 pF) ESD protection device (e.g. Tyco
Electronics PESD0402-140 ESD protection device) should be mounted on the USB_D+ and USB_D-
lines, close to the accessible points (i.e. close to the USB connector)
 SPI interface: a low capacitance (i.e. less than 10 pF) ESD protection device (e.g. Infineon
ESD8V0L2B-03L or AVX USB0002) should be mounted on the SPI_MISO, SPI_MOSI, SPI_SCLK,
SPI_MRDY, SPI_SRDY lines, close to the accessible points
 CODEC_CLK: a low capacitance (i.e. less than 10 pF) ESD protection device (e.g. Infineon
ESD8V0L2B-03L or AVX USB0001) should be mounted on the CODEC_CLK line, close to the
accessible point
 Other pins: a general purpose ESD protection device (e.g. EPCOS CA05P4S14THSG varistor array
or EPCOS CT0402S14AHSG varistor) should be mounted on the related line, close to the
accessible point