ADNV-6330 Avago Technologies US Inc., ADNV-6330 Datasheet - Page 6

• Manufacturer Part Number: ADNV-6330
• Description: IC LASER MOUSE VSCEL
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNV-6330

• Wavelength: 842nm
• Voltage - Input: 1.9V
• Current Rating: 12mA
• Power (watts): 4.5mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Package / Case: -
• Lead Free Status / Rohs Status: Details

Notes (for figure 5)
• Caps for pins 11, 12, 16 and 18 MUST have trace lengths LESS than 5
• Pins 16 and 18 caps MUST use pin 17 GND.
• Pin 9, if used, should not be connected to PCB GND to reduce potential
• 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
• VDD3 and GND should have low impedance connections to the
• Because the RBIN pin sets the XY_LASER current, the following PC
• The RBIN resistor should be located close to the sensor pin 13. The
• The pin 13 solder pad and all exposed conductors connected to pin
• The pin 13 solder pad, the traces connected to pin 13, and the RBIN
• The RBIN resistor should be a thru-hole style to increase the distance
LASER Drive Mode
The LASER has 2 modes of operation: DC and Shutter. In
DC mode, the LASER is on at all times the chip is powered
except when in the power down mode via the NPD pin.
In shutter mode the LASER is on only during the portion
of the frame that light is required. The LASER mode is
set by the LASER_MODE bit in the Configuration_bits
register. For optimum product lifetime, Avago Tech-
nologies recommends the default Shutter mode setting
(except for calibration and test).
Laser Bin Table
6
Bin
Number
2A
3A
mm on each side.
RF emissions.
ADNS-6000. Serial port inputs on the sensor should be connected
to open-drain outputs from the microcontroller or use an active
drive level shifter. NPD and RESET should be connected to 5V micro-
controller outputs through a resistor divider or other level shifting
technique.
power supply.
board layout practices should be followed to reduce the chance of
uncontrolled 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.
traces between the resistor and the sensor should be short.
13 should be surrounded by a guard trace connected to VDD3 and
devoid of a solder mask.
resistor should be covered with a conformal coating.
between its terminals. This does not apply if a conformal coating is
used.
Rbin Resistor Value
(kohm)
18.7
12.7
Match_Bit
(Reg 0x2C, Bit7)
0
0
Eye Safety
The ADNS-6000 and the associated components in the
schematic of Figure 5 are intended to comply with Class
1 Eye Safety Requirements of IEC 60825-1. Avago Tech-
nologies suggests that manufacturers perform testing to
verify eye safety on each mouse. It is also recommended
to review possible single fault mechanisms beyond those
described below in the section “Single Fault Detection”.
Under normal conditions, the ADNS-6000 generates the
drive current for the laser diode (ADNV-6330). In order
to stay below the Class 1 power requirements, resistor
Rbin must be set at least as high as the value in the bin
table of Figure 5, based on the bin number of the laser
diode and LP_CFG0 and LP_CFG1 must be programmed
to appropriate values. Avago Technologies recommends
using the exact Rbin value specified in the bin table
to ensure sufficient laser power for navigation. The
system comprised of the ADNS-6000 and ADNV-6330
is designed to maintain the output beam power within
Class 1 requirements over component manufacturing
tolerances and the recommended temperature range
when adjusted per the procedure below and when
implemented as shown in the recommended application
circuit of Figure 5. For more information, please refer to
Avago Technologies Laser Mouse Eye Safety Calculation
Application Note 5088.
LASER Power Adjustment Procedure
1. The ambient temperature should be 25 °C
2. Set VDD3 to its permanent value.
3. Ensure that the laser drive is at 100% duty cycle.
. Program the LP_CFG0 and LP_CFG1 registers to achieve
Good engineering practices should be used to guarantee
performance, reliability and safety for the product design.
Avago Technologies has additional information and
detail, such as firmware practices, PCB layout sugges-
tions, and manufacturing procedures and specifications
that could be provided.
an output power as close to 506uW as possible without
exceeding it.
±
5°C.