The MAX3850 is a +3.3V DC-coupled laser driver for
SDH/SONET applications up to 2.7Gbps. The device
accepts differential data and clock inputs and provides
bias and modulation currents for driving a laser. If a
clock signal is available, a synchronizing input latch
can be used to reduce jitter. An automatic power-control
(APC) feedback loop is incorporated to maintain a
constant average optical power over temperature and
lifetime. The wide modulation current range of 5mA to
60mA (up to 80mA AC-coupled) and bias current of
1mA to 100mA are easy to program, making this product
ideal for SDH/SONET applications. The MAX3850
also provides laser current-enable control, two current
monitors that are directly proportional to the laser bias
and modulation currents, and a failure-monitor output to
indicate when the APC loop is unable to maintain the
average optical power. Designed to be DC-coupled to
the laser with a supply voltage of only 3.3V, the
MAX3850 greatly simplifies interface requirements. The
MAX3850 is available in a small 32-pin QFN package
as well as dice.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-3 of 3
MAX3850
Free Sample
Buy
Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX3850E/D
N/A
No Longer Available
DICE SALES;NA pin;0 mm²
Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet
MAX3850EGJ
N/A
No Longer Available
QFN;32 pin;26 mm²
Outline Drawing: 21-0091 (PDF)
Land Pattern: 90-0279 (PDF)
Use pkgcode/variation: G3255-1*
Download
E-Mail