Installation Instructions

LISA-U2 series - System Integration Manual
UBX-13001118 - R19 Early Production Information Design-In
Page 139 of 175
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 level could be required if the relevant pin is externally accessible on the
application board. The following precautions are suggested to achieve higher protection level:
 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 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 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 accessible point