MAX3663EVKIT Maxim Integrated, MAX3663EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX3663EVKIT
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: MAX3663r

9) Adjust R15 until LED D1 is no longer illuminated.
See Quick Start first.
COMPONENT
Laser power can be monitored at the laser diode
with an optical/electrical converter (refer to the note
in the Applications Information section of the
MAX3663 data sheet).
JU1
JU2
JU3
JU4
R14
R15
R16
TP1
D1
J3
_______________________________________________________________________________________
Fail Indicator Test Point
APC Fail Indicator LED
Electrical Output SMA
R
OUTPUT DISABLE
R
R
BIASMAX
MODSET
APCSET
R
R
R
BIASMAX
NAME
MODSET
APCSET
Selector
Selector
Selector
Refer to the Design Procedure section of the MAX3663 data sheet. Set the APC
current, and then increase the bias current until the LED goes off (the LED is
illuminated when the APC loop is open and off when the APC loop is closed).
Electrical Output. Remove for optical operation.
Selects R
R17.
Selects R
R25.
Selects R
R4.
Enable/Disable the Output Currents. Shunt to V
ground or leave open to enable the part.
Laser Modulation Current Adjustment
Laser Bias-Current Adjustment. In open-loop mode, R15 adjusts the laser bias
current. In closed-loop operation, R15 adjusts the maximum laser bias current.
Automatic Power-Control Adjustment. For closed-loop operation, R16 adjusts the
monitor-diode current level.
TTL low level indicates a failure in the APC loop.
BIASMAX
MODSET
APCSET
Adjustment and Control Descriptions
MAX3663 Evaluation Kit
resistor. Shunt to supplied potentiometer R16 or to fixed resistor
resistor. Shunt to supplied potentiometer R14 or to fixed resistor
resistor. Shunt to supplied potentiometer R15 or to fixed resistor
10) Adjust R14 until the desired optical amplitude is
achieved. Optical amplitude can be observed on
an oscilloscope connected to an optical/electrical
converter.
FUNCTION
CC
to disable the part. Shunt to
3