HFCT-5962ATG Avago Technologies US Inc., HFCT-5962ATG Datasheet - Page 3

• Manufacturer Part Number: HFCT-5962ATG
• Manufacturer: Avago Technologies US Inc.

Specifications of HFCT-5962ATG

• Optical Fiber Type: TX/RX
• Data Transfer Rate: 155Mbps
• Optical Rise Time: 2ns
• Optical Fall Time: 2ns
• Operating Temperature Classification: Industrial
• Peak Wavelength: 1360/1580nm
• Package Type: DIP With Connector
• Operating Supply Voltage (min): 3.1V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.5V
• Output Current: 50mA
• Operating Temp Range: -40C to 85C
• Mounting: Snap Fit To Panel
• Pin Count: 20
• Lead Free Status / RoHS Status: Compliant

Functional Description
Transmitter Section
Design
A schematic diagram for the transmitter is shown in
Figure 2. The HFCT-5962TL/TG/NL/NG/ATL/ATG incorpo-
rates an FP laser as its optical source. All part numbers
have been designed to be compliant with IEC 825 eye
safety requirements under any single fault condition
and CDRH under normal operating conditions. The op-
tical output is controlled by a custom IC that detects the
laser output via the monitor photodiode. This IC pro-
vides both dc and ac current drive to the laser to ensure
correct modulation, eye diagram and extinction ratio
over temperature, supply voltage and operating life.
The transmitter also includes monitor circuitry for both
the laser diode bias current and laser diode optical
power.
Figure 2. Simplified Transmitter Schematic
3
DATA
DATA
P
P
B
B
MON
MON
MON
MON
(+)
(-)
(+)
(-)
LVPECL
INPUT
MODULATOR
LASER
LASER BIAS
LASER BIAS
CONTROL
DRIVER
LASER
FP
(rear facet monitor)
PHOTODIODE