9
AFBR-16xxZ Transmitter
The AFBR-16xxZ transmitter incorporates a 650 nm LED and integrated driver IC in a light gray, nonconductive plastic
Versatile Link housing. Its input data is compatible with TTL logic level. This transmitter can operate from DC to 50 MBd
with any kind of data pattern using 1 mm Polymer Optical Fiber (POF). Within the speci ed ranges AFBR-16x4Z and
AFBR-16x9Z devices will support a BER < 10E-9.
Transmitter Electrical Characteristics
(T
A
= -40 C to +85 C, V
CCT
= 3.3 V ± 5% or 5 V ± 5%)
Parameter Symbol Min Typical Max Unit Notes
Supply Current (Optical Power ON) I
CCT
21 31 mA 1
Input Voltage – Low V
IL
-0.3 0.8 V 2
Input Voltage – High V
IH
2.0 Vcc+0.3 V 2
Data Input Capacitance C
IN
7pF
Data Input Resistance R
IN
2k
Propagation Delay t
TD
30 ns
Transmitter Optical Characteristics
(T
A
= -40 C to +85 C, V
CCT
= 3.3 V ± 5% or 5 V ± 5%)
Parameter Symbol Min Typical Max Unit Notes
Output Optical Power (peak), 1 mm POF P
N
-4.5 -2 +2 dBm 3
Output Optical Power (peak), PCS (200 μm) P
N
-16.5 -13 -9 dBm 3
Output Optical Power (Average), OFF P
S
-50 dBm
Extinction Ratio ER 10 dB
Peak Wavelength
c
630 685 nm
Rise Time (20%–80%) t
RT
5ns
Fall Time (20%–80%) t
FT
5ns
Pulse Width Distortion PWD -3 +3 ns 4, 5
Pulse Width Distortion of rst pulse PWD -5 +3 ns 5, 6
Notes:
1. For any type of data between DC and 50 Mbd. Typical value 21 mA for PRBS-7 pattern at 25 C at 5 V and 50 Mbaud.
2. Standard TTL compatible input.
3. Measured with polished connector end face: after 1 meter 1 mm POF, NA = 0.5, or 200 m PCS, NA = 0.37.
4. Pulse width is measured at 50% threshold using a rising edge trigger tested with PRBS-7 pattern
5. Electrical input pulse width is determined at 1.5 V and dU/dt between 1 V and 2 V shall not be less than 1 V/ns.
6. The rst pulse is shorter as the LED is completely discharged. This helps to mitigate the increase of pulse width of the rst pulse of the Receiver
