ADNS-6000 Avago Technologies US Inc., ADNS-6000 Datasheet - Page 8

• 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

Notes (for figure 7)
• Caps for pins 11, 12, 16 and 18 MUST have trace lengths LESS than 5 mm on each side.
• Pins 16 and 18 caps MUST use pin 17 GND.
• Pin 9, if used, should not be connected to PCB GND to reduce potential RF emissions.
• The 0.1 uF caps must be ceramic.
• Caps should have less than 5 nH of self inductance.
• Caps should have less than 0.2 W ESR.
• NC pins should not be connected to any traces.
• Surface mount parts are recommended.
• Care must be taken when interfacing a 5V microcontroller to the ADNS-6000. Serial port inputs on the sensor should be connected to open-
• VDD3 and GND should have low impedance connections to the power supply.
• Because the RBIN pin sets the XY_LASER current, the following PC board layout practices should be followed to reduce the chance of uncon-
• The RBIN resistor should be located close to the sensor pin 13. The traces between the resistor and the sensor should be short.
• The pin 13 solder pad and all exposed conductors connected to pin 13 should be surrounded by a guard trace connected to VDD3 and devoid
• The pin 13 solder pad, the traces connected to pin 13, and the RBIN resistor should be covered with a conformal coating.
• The RBIN resistor should be a thru-hole style to increase the distance between its terminals. This does not apply if a conformal coating is used.
External PROM
The ADNS-6000 must operate from externally loaded
programming. This architecture enables immediate
adoption of new features and improved performance
algorithms. The external program is supplied by Avago as
a file, which may be burned into a programmable device.
The example application shown in this document uses an
EEPROM to store and load the external program memory.
A micro-controller with sufficient memory may be used
instead. On power-up and reset, the ADNS-6000 program
is downloaded into volatile memory using the burst-
mode procedure described in the Synchronous Serial Port
section. The program size is 1986 x 8 bits.
Figure 8. Block diagram of ADNS-6000 optical mouse sensor
8
RESET
MISO
MOSI
SCLK
RBIN
NCS
drain outputs from the microcontroller or use an active drive level shifter. NPD and RESET should be connected to 5V microcontroller outputs
through a resistor divider or other level shifting technique.
trolled laser drive current caused from a leakage path between RBIN and ground. One hypothetical source of such a leakage path is PC board
contamination due to a liquid, such as a soft drink, being deposited on the printed circuit board.
of a solder mask.
CTRL
LASER DRIVER
PROCESSOR
IMAGE
OSCILLATOR
OSC_IN
OSC_OUT
REFB
REFC
XY_LASER
NPD
LASER_NEN
GND
V
DD3
REFERENCE
VOLTAGE
FILTER NODE
3.3 V POWER
RESONATOR