CYONS1001X Datasheet, PDF (19/24 Pages) Cypress Semiconductor – OvationONS™ Laser Navigation Sensors

CYONS1001x
PCB Requirements
Figure 12 shows the mechanical requirements for the PCB. The
board requires:
■ Two clearance holes 1.00 mm in diameter for the lens alignment
pins.
■ Two slots for the clip legs of the lens. The radii of these slots
are also 1.00 mm, giving the slot a width of 2.00 mm.
The holes and the slots must be clear of other components on
both sides of the PCB.
Land pad architecture and spacing are consistent with JEDEC
MO-220 (52-lead QFN). The L-shaped feature inside the array
of lands must be soldered to the tab on the bottom of the sensor
package and connected to the DGND signal of the PCBA. Also,
the entire area within the sensor land pads must be kept free of
exposed copper.
Figure 12. PCB Mechanical Features
with the lens clips. The keepouts must be free of both
components and solder build-up.
Figure 13. PCB Keepout Zones
PCB Mounting Height
The distance between the tracking surface and the sensor must
be controlled. For optimal performance, the lower edge of the
PCB must be positioned 12.78 ± 0.25 mm from the tracking
surface, as shown in Figure 14. At this distance, the lower plane
of the lens is typically 2.78 mm above the tracking surface.
Deviations from the specified PCB-to-tracking surface distance
degrade tracking performance and lift detection.
Figure 14. PCB Mounting Height
PCB
CYONS1001
PCB Keepout Zones
Figure 13 shows the PCB keepout zones. The keepouts on the
sensor side of the board prevent interference with the
CYONSLENS1001 lens after it is mounted on the sensor. The
keepouts on the opposite side of the board prevent interference
12.78 mm
2.78 mm (REF)
CYONSLENS1001
TRACKING
SURFACE
Document Number: 001-06398 Rev. *J
Page 19 of 24
[+] Feedback