參數(shù)資料
型號(hào)： ADNV-6340
廠商： Avago Technologies Ltd.
英文描述： High Performance Laser Mouse Bundles
中文描述： 高性能激光鼠標(biāo)捆綁
文件頁(yè)數(shù)： 6/52頁(yè)
文件大?。?/td> 997K
代理商： ADNV-6340
6
Laser Bin Table
Bin Number
2A
Rbin Resistor
Value (kohm)
18.7
Match_Bit
(Reg 0x2C, Bit7)
0
3A
12.7
0
Notes (for Figure 5)
·
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 po-
tential 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-6010. Serial port inputs on the sensor should be con-
nected to open-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.
·
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 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.
o The RBIN resistor should be located close to the sensor pin 13. The
traces between the resistor and the sensor should be short.
o 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 of a solder mask.
o The pin 13 solder pad, the traces connected to pin 13, and the
RBIN resistor should be covered with a conformal coating.
o The RBIN resistor should be a thru-hole style to increase the dis-
tance between its terminals. This does not apply if a conformal
coating is used.
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 regis-
ter. For optimum product lifetime, Avago Technologies
recommends the default Shutter mode setting (except
for calibration and test).
Eye Safety
The ADNS-6010 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-6010 generates the
drive current for the laser diode (ADNV-6340). 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 sys-
tem comprised of the ADNS-6010 and ADNV-6340 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 ADNB-6001, ADNB-6002, ADNB-
6011 and ADNB-6012 Laser Mouse Eye Safety Calculation
Application Note 5088.
LASER Power Adjustment Procedure
1. The ambient temperature should be 25C +/- 5C.
2. Set VDD3 to its permanent value.
3. Ensure that the laser drive is at 100% duty cycle.
4. Program the LP_CFG0 and LP_CFG1 registers to
achieve an output power as close to 506uW as pos-
sible without exceeding it.
Good engineering practices should be used to guaran-
tee 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.
相關(guān)PDF資料
PDF描述
ADNK-3080 High-Performance Optical Mouse Sensor
ADNS-3080 High-Performance Optical Mouse Sensor
ADNS-3150-001 Optical Mouse Designer’s Kit
ADNS-5020-EN Optical Mouse Sensor
ADNS-5030 Low Power Optical Mouse Sensor
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