ADNS-6000 Avago Technologies US Inc., ADNS-6000 Datasheet - Page 10

• Manufacturer Part Number: ADNS-6000
• Description: Laser Mouse Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-6000

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Single Fault Detection
ADNS-6000 is able to detect a short circuit, or fault,
condition at the RBIN and XY_LASER pins, which could
lead to excessive laser power output. A low resistance
path to ground on either of these pins will trigger the
fault detection circuit, which will turn off the laser drive
current source and set the LASER_NEN output high. When
used in combination with external components as shown
in the block diagram below, the system will prevent
excess laser power for a single short to ground at RBIN or
XY_LASER by shutting off the laser. Refer to the PC board
layout notes for recommendations to reduce the chance
of high resistance paths to ground existing due to PC
board contamination.
In addition to the continuous fault detection described
above, an additional test is executed automatically
Figure 9. Single Fault Detection and Eye-safety Feature Block Diagram
Figure 10. Distance from lens reference plane to surface
10
Sensor PCB
Microcontroller
Sensor
0.094
2.40
RESET
NPD
Lens
voltage sense
fault control
VCSEL PCB
current set
ADNS-6000
block
DRIVER
LASER
RBIN
Surface
VCSEL
VDD3
VCSEL Clip
GND
whenever the LP_CFG0 register is written to. This test
will check for a short to ground on the XY_LASER pin, a
short to VDD3 on the XY_LASER pin, and will test the fault
detection circuit on the XY_LASER pin.
Regulatory Requirements
• Passes FCC B and worldwide analogous emission limits
• Passes IEC-1000-4-3 radiated susceptibility level when
• Passes EN61000-4-4/IEC801-4 EFT tests when assembled
• UL flammability level UL94 V-0.
when assembled into a mouse with shielded cable and
following Avago recommendations.
assembled into a mouse with shielded cable and fol-
lowing Avago Technologies’ s recommendations.
into a mouse with shielded cable and following Avago
Technologies’ s recommendations.
LASER_NEN
XY_LASER
VDD3
LASER