afct-5805amz Avago Technologies, afct-5805amz Datasheet - Page 2

• Manufacturer Part Number: afct-5805amz
• Description: 155 Mb/s Single Mode Fiber Optic Transceiver For Atm, Sonet Oc-3/sdh Stm-1
• Manufacturer: Avago Technologies

Figure 1. Block Diagram
Receiver Signal Detect
Signal Detect is a basic fi ber failure indicator. This is a
single-ended PECL output. As the input optical power
is decreased, Signal Detect will switch from high to low
(deassert point) somewhere between sensitivity and
the no light input level. As the input optical power is
increased from very low levels, Signal Detect will switch
back from low to high (assert point). The assert level will be
at least 0.5 dB higher than the deassert level.
Transceiver Specifi ed for Wide Temperature Range Op-
eration
The AFCT-5805xxxZ is specifi ed for operation over ex-
tended temperature range of -40° to +85°C.
Characterization of the parts has been performed over
the ambient operating temperature range in an airfl ow
of 2 m/s.
Other Members of Avago Technologies SC Duplex
155 Mb/s Product Family
 HFCT-5801, 1300 nm single mode transceiver for
2
DATA
DATA
SIGNAL DETECT
DATA
DATA
links up to 15 km. The part is based on the 2 x 9 in-
dustry standard package and has laser bias, optical
power monitor and transmitter disable functions.
ELECTRICAL SUBASSEMBLY
AMPLIFIER IC
DRIVER
LASER
POST
IC
ASSEMBLIES
AMPLIFIER
PRE-
OPTICAL
TOP VIEW
LASER
IC
SUB-
Applications Information
Typical BER Performance of Receiver versus Input Opti-
cal Power Level
The AFCT-5805xxxZ transceiver can be operated at
Bit-Error-Rate conditions other than the required BER =
1 x 10
Standard. The typical trade-off of BER versus Relative In-
put Optical Power is shown in Figure 2. The Relative Input
Optical Power in dB is referenced to the actual sensitivity
of the device. For BER conditions better than 1 x 10
more input signal is needed (+dB).
Figure 2. Relative Input Optical Power - dBm. Avg.
PIN PHOTODIODE
10
10
10
10
10
10
10
10
10
10
10
10
10
10
-10
-11
-12
-13
-14
-15
-2
-3
-4
-5
-6
-7
-8
-9
-10
-5
of the ATM Forum 155.52 Mb/s Physical Layer
-4
LINEAR EXTRAPOLATION OF
10
-3 -2 -1
DUPLEX SC
RECEPTACLE
-4
THROUGH 10
ACTUAL DATA
-7
BASED ON
0
DATA
1
2
3
-10
,