AFCT-5611Z Avago Technologies US Inc., AFCT-5611Z Datasheet - Page 8

• Manufacturer Part Number: AFCT-5611Z
• Description: TXRX 1.25GBD GBIC PLUGGABLE
• Manufacturer: Avago Technologies US Inc.

Specifications of AFCT-5611Z

• Applications: Ethernet
• Data Rate: 1.25Gbd
• Wavelength: 1310nm
• Voltage - Supply: 4.75 V ~ 5.25 V
• Connector Type: GBIC
• Mounting Type: Panel Mount
• Supply Voltage: 5V
• Wavelength Typ: 850nm
• Peak Reflow Compatible (260 C): Yes
• Leaded Process Compatible: Yes
• Optical Fiber Type: TX/RX
• Optical Rise Time: 0.26/0.35ns
• Optical Fall Time: 0.26/0.35ns
• Jitter: 0.227ns
• Operating Temperature Classification: Commercial
• Peak Wavelength: 860nm
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: 0C to 60C
• Pin Count: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Short Wavelength GBIC: AFBR-5601Z
Transmitter Section
The transmitter section consists of an 850 nm VCSEL in
an optical subassembly (OSA), which mates to the fiber
cable. The VCSEL OSA is driven by a custom, silicon bi-
polar IC which converts differential logic signals into an
analog Laser Diode drive current.
Receiver Section
The receiver includes a GaAs PIN photodiode mounted
together with a custom, silicon bipolar transimpedance
preamplifier IC, in an OSA. The OSA interfaces to a cus-
tom silicon bipolar circuit that provides post-amplifica-
tion and quantization. The post-amplifier includes a
Signal Detect circuit that provides TTL compatible logic-
low output in response to the detection of a usable input
optical signal.
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each
parameter in isolation, all other parameters having values within the recommended operating conditions. It should not
be assumed that limiting values of more than one parameter can be applied to the product at the same time. Exposure
to the absolute maximum ratings for extended periods can adversely affect device reliability.
Recommended Operating Conditions
Transceiver Electrical Characteristics
(T
Notes:
1. Up to applied V
2. See Figure 1 for measurement point.
3. Maximum current is specified at V
4. Hot plug above actual steady state current.
5. Total T
8
Parameter
Storage Temperature
Supply Voltage
Data Input Voltage
TransmitterDifferential Input Voltage
Relative Humidity
Parameter
Ambient Operating Temperature
Case Temperature
Supply Voltage
Supply Current
Parameter
Surge Current
Power Dissipation
A
= 0°C to +60°C, V
X
+ R
X
.
DD
T.
CC
= 4.75 V to 5.25 V)
CC
= maximum @ maximum operating temperature and end of life.
Symbol
T
V
V
TX_DAT
±TX_DAT
RH
Symbol
T
T
V
V
I
Symbol
I
P
TX
SURGE
A
S
CASE
DD
DD
DD
DD
DISS
+ I
T
T
R
R
RX
Eye Safety Design
The laser driver is designed to be Class 1 eye safe
(CDRH21 CFR(J), IEC 60825-1) under a single fault condi-
tion. To be eye safe, only one of two results can occur in
the event of a single fault. The transmitter must either
maintain normal eye safe operation or the transmitter
should be disabled.
There are three key elements to the safety circuitry: a
monitor diode, a window detector circuit, and direct
control of the laser bias. The window detection circuit
monitors the average optical power using the monitor
diode. If a fault occurs such that the dc regulation circuit
cannot maintain the preset bias conditions within ±20%,
the transmitter will automatically be disabled. Once this
has occurred, an electrical power reset will allow an at-
tempted turn-on of the transmitter. TX_FAULT can also
be cleared by cycling TX_DISABLE high for a time interval
>10 µs.
Min.
-40
-0.5
-0.5
5
Min.
0
4.75
Min.
Typ.
Typ.
5.0
200
Typ.
1.00
Max.
+85
6.0
V
2000
95
Max.
+60
+75
5.25
300
Max.
+30
1.58
DD
T
Unit
°C
V
V
mV p-p
%
Unit
°C
°C
V
mA
Unit
mA
W
Notes
1
Notes
2
3
Notes
4
5