AFBR-24x9xZ
50 MBd Miniature Link Fiber Optic Receiver
Data Sheet
Description
The AFBR-24x9Z series components provide cost effec-
tive, high performance fiber optic communication links
for information systems and industrial applications with
link distances of up to 3 km. The receivers are directly
compatible with popular “industry-standard” connectors:
ST® and SMA. They are designed for use with 62.5/125
µm
multi mode fiber.
Features
•
RoHS-compliant
•
Works with Avago HFBR-14xxZ (820 nm LED) transmitter
•
Data transmission at signal rates from 100 kBd up to 50
MBd
•
Receiver: Integrated PIN diode and digitalizing IC with
CMOS/TTL output logic
•
Up to 3 km distance with Multimode Glass Fiber Cable
•
Operating temperature range of -40 °C to +85 °C
•
Compatible with 10Base-FL standard
•
3.3 V and 5 V supply voltage operation
•
RSSI output
AFBR-24x9xZ Available Part Numbers
Part Number
AFBR-2409Z
AFBR-2419Z
AFBR-2419TZ
AFBR-2419MZ
Description
Receiver with SMA port
Receiver with ST port
Receiver with threaded ST port
Receiver with metal ST port
Applications
•
Optical transmission from 100 kBd up to 50 MBd
•
Industrial control and factory automation
•
High voltage isolation
Link Length
Data Rate
(MBd)
20
32
40
50
Max. Distance
(m)
3000
2200
1500
1000
Fiber Size
(μm)
62.5/125
62.5/125
62.5/125
62.5/125
Transmitter
HFBR-1414Z
HFBR-1414Z
HFBR-1414Z
HFBR-1414Z
•
Elimination of ground loops
•
Reduces voltage transient susceptibility
•
Power substation automation
Verified with PRBS7 pattern at min. Tx optical power -19 dBm avg
(-16 dBm pk. as specified in HFBR-1414Z data sheet).
Package and Handling Information
Package Information
The receiver is housed in a low-cost, dual-inline package
that is made of high strength, heat resistant, chemically
resistant, and UL 94V-O flame retardant ULTEM® plastic
(UL File #E121562). The receivers (suffix Z, TZ) are easily
identified by the dark grey color connector port. A metal
port option is also available (suffix MZ). The metal port op-
tion components have an internal electrical connection
between the metal port and the four grounding pins, as
shown in the package outline drawing. Signal ground is
separate from the four grounding pins to give flexibility in
connecting the port to signal or chassis ground. The pack-
age is designed for auto-insertion and wave soldering so
it is ideal for high volume production applications.
AFBR-24x9xZ Low-Cost 50 MBd Receiver
Description
The AFBR-24x9xZ fiber optic receiver is designed to oper-
ate with the Avago Technologies HFBR-14xxZ fiber optic
transmitters and multimode glass fiber cable. Consistent
coupling into the receiver is assured by the optical system
with lens. The receiver output is a digital CMOS/TTL signal.
The AFBR-24x9xZ receiver contains an IC with integrated
photodiode which directly converts the incoming opti-
cal signal to a digital output signal without the requisite
for additional external circuitry. Because of its integrated
design, the receiver has very high EMC resistance. A wide
receiver dynamic range and high sensitivity over tempera-
ture is achievable. The data rate typically goes from 100
kBd to 50 MBd. A monitor (RSSI) output, which delivers an
output current proportional to the average incoming light
power, is available.
For an almost noise-free RSSI-signal smoothing compo-
nents are recommended. A capacitor in parallel to the
resistor on the RSSI output reduces potential high fre-
quency signal parts. The use of a single 100 nF capacitor
for signal smoothing is sufficient in most common appli-
cations, as shown in the Recommended Receiver Circuitry
section on page 4. If this RSSI function is not required, the
output pin can be left floating. The RSSI-signal is derived
from internal controlling loops; therefore, the typical time
constant of pure RSSI output current without an external
filter can be up to 1 ms. This time constant also depends
on the actual average incoming light power.
Handling and Design Information
Each part is delivered with a protective port cap or a plug
covering the optics. These caps/plugs will vary by port
style. When soldering, it is advisable to leave the protec-
tive cap on the unit to keep the optics clean. Good system
performance requires clean port optics and cable ferrules
to avoid obstructing the optical path. Clean compressed
air often is sufficient to remove particles of dirt; methanol
on a cotton swab also works well.
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Supply Voltage
Maximum DC Output Current
Voltage at RSSI Output
Lead Soldering Cycle - Temp
Lead Soldering Cycle - Time
Electrostatic Discharge Voltage Capability
Electrostatic Discharge Voltage Capability
Symbol
T
S
T
A
V
CC
I
O
V
RSSI
T
SOLD
t
SOLD
ESD
HBM
ESD
MM
Min
-40
-40
-0.3
-0.3
Max
+85
+85
5.5
10
V
CC
+0.3
260
10
2000
400
Unit
°C
°C
V
mA
V
°C
s
V
V
Reference
Note 1
Note 1
Note 2
Note 3
Note:
1. 1.6 mm below seating plane.
2. ESD capability for all pins HBM (Human Body Model) according to JEDEC JESD22-A114.
3. ESD capability for all pins MM (Machine Model) according to JEDEC JESD22-A115.
2
Electrical/Optical Characteristics
-40
°C
to +85
°C,
3.135 V < V
CC
< 5.25 V
Parameter
Optical Input Avg. Power
Range (40 MBd proprietary)
Optical Input Avg. Power
Range (50 MBd proprietary)
Optical Input Average Power
Range (10Base-FL)
Optical Spectrum Range
Data Rate
Propagation Delay
Supply Voltage
Supply Current
High Level Output Voltage
Low Level Output Voltage
Output Rise Time (10-90%)
Output Fall Time (90-10%)
Pulse Width Distortion
Total Jitter
RSSI Output Responsivity
Voltage at RSSI Output
Symbol
P
IN-40
P
IN-50
P
IN-10B
λ
IN
DR
t
RD
V
CC
I
CC
V
OH
V
OL
t
R
t
F
PWD
TJ
I
RSSI
/P
IN
V
RSSI
Min
-30
-27
-32.5
792
0.1
Typ
[1]
Max
0
0
0
Unit
dBm
dBm
dBm
nm
MBd
ns
Condition
DR = 40 MBd
DR = 50 MBd
DR = 10 Mbps
(biphase-coded)
peak wavelength
Reference
Notes 2,3,4
Notes 2,3,5
Notes 2,3,6
820
27
865
50
5.25
Note 7
P
IN
= -20 dBm avg.
R
L
= 2 kΩ
R
L
= 2 kΩ
R
L
= 2 kΩ
C
L
= 10 pF
C
L
= 10 pF
P
IN
= -30 dBm avg.
P
IN
= -32.5 dBm avg.
Notes 2,4
Notes 2,4
Note 4,9
Note 6
Note 8
Note 8
3.135
11
2.4
V
CC
-0.3
0.2
V
mA
V
V
ns
ns
ns
ns
A/W
V
20
V
CC
0.4
5
5
-5
0.3
0
0.65
5
15
0.9
V
CC
-1
Notes:
1. Typical data are at 25
°C,
V
CC
= 5.0 V.
2. In recommended receiver circuit, with an optical signal from the recommended transmitter circuit, transmitted via 62.5/125
µm
MM fiber.
3. Condition for sensitivity limit: Total Jitter ≤ 0.6 UI (unit intervals).
4. Verified with a PRBS7 signal with mark ratio = ½ running at 40 MBd.
5. Verified with a PRBS7 signal with mark ratio = ½ running at 50 MBd.
6. Verified with a jitter-free Manchester coded pseudo random sequence running at 20 MBd (~10 Mbit/s) as optical input signal.
7. The device does not support DC operation. Hence any static low or high at the input will cause an undefined output signal.
8. The RSSI current output has been verified with an external resistor R
RSSI
=2 kΩ
9. The PWD is valid for the receiver only, assuming an ideal 50% duty cycle optical input signal. PWD = PW
OUT-AVG
- PW
IN-AVG
Operation with unbalanced pattern (mark ratio ≠ 1/2 or DC ≠ 50%) will cause a higher PWD than what is specified in this table.
Pin Description
Pin
1
2
3
4
5
6
7
8
Name
NC
/D
O
V
CC
NC
NC
RSSI
GND
NC
Function
NC
Data Out inverted (CMOS/TTL logic)
5V/3.3V Supply Voltage
NC
NC
Received Signal Strength Indicator Output
Ground
NC
Reference
1
2
1
1
4
3
2
1
5
6
7
8
PIN NO. 1 INDICATOR
BOTTOM VIEW
1
Notes
1. Pins 1, 4, 5 and 8 are connected together internally. The metal port option components (suffix MZ) have an internal electrical connection between
the metal port and the four grounding pins
2. The data output provides an inverted signal, thus an electrical low in case of light on and vice versa.
3
Recommended Receiver Circuitry
RXVCC
1
µH
C1
10
µF
GND
AFBR-24x9xZ
LL
L1
C2
100 nF
GND
V
CC
RSSI
DO
GND
3
6
2
7
R
RSSI
C3
100 nF
GND
1E+04
1E+03
V
RSSI
- mV
1E+02
1E+01
1E+00
1E-01
-30
85 °C
25 °C
-40 °C
I
RSSI
/P
IN
- A/W
V
RSSI
Monitoring
Rx
DO
2k
PHY
1
4
5
8
GND GND
GND
0.9
0.8
0.7
0.6
0.5
0.4
50 MBd
20 MBd
-20
-10
P
IN
- OPTICAL INPUT POWER - dBm
0
0.3
-50
0
50
T - TEMPERATURE - °C
100
Figure 1. Typical RSSI output voltage across R
RSSI
= 2 kΩ
Figure 2. Typical Responsivity vs. Temperature
Note:
To provide a suitable monitoring voltage , choose the value of R
RSSI
according to the particular optical power situation. For the characterization of the
responsivity, 2 kΩ was used. The lower the power, the higher the resistor value should be. Do not, however, override the max. limit of V
RSSI
.
Recommended Transmitter Driver Circuitry using HFBR-14x4xxZ
Transmitter
HFBR-14x4xxZ
R1
33
Ω
R2
33
Ω
R3
270
Ω
C3
75 pF
TXVCC = 5.0V
HFBR-14x4xxZ
AN2
AN6
AN7
CAT
Tx
8
5
4
1
C1
10
µF
C3
1
2
12
Data
13
IC1D
11
4
5
9
10
4
C2
100 nF
GND
IC1A
3
IC1B
6
IC1C
8
GND
R2
2
6
7
3
R1
R3
GND
74ACTQ00MTC
GND
LL
Mechanical Dimensions – SMA Port
AFBR-2409Z
1/4 - 36 UNS 2A THREAD
12.7
(0.50)
AVAGO
COUNTRY
AFBR-2409Z
RX YYWW
Note: Dimensions are in millimeters (inches).
22.2
(0.87)
12.7
(0.50)
6.4
(0.25) DIA.
6.35
(0.25)
3.6
(0.14)
5.1
(0.20)
10.2
(0.40)
3.81
(0.15)
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46 DIA.
(0.018)
2.54
(0.10)
4
5
1.27
(0.05)
2.54
(0.10)
1
8
PIN NO. 1
INDICATOR
5.1
(0.20)
AVAGO
COUNTRY
AFBR-2419TZ
RX
YYWW
Mechanical Dimensions – Threaded ST Port
AFBR-2419TZ
4.9 MAX.
(0.193)
12.7
(0.50)
2 3
7 6
Note: Dimensions are in millimeters (inches).
8.4
(0.33)
7.6
(0.30)
6.35
(0.25)
27.2
(1.07)
12.7
(0.50)
7.1 DIA.
(0.28)
3.6
(0.14)
5.1
(0.20)
10.2
(0.40)
3.81
(0.15)
PINS 1,4,5,8
0.51
×
0.38
(0.020
×
0.015)
PINS 2,3,6,7
0.46 DIA.
(0.018)
3/8 - 32 UNEF - 2A
2.54 DIA.
(0.10)
4
5
1.27
(0.05)
2.54
(0.10)
1
8
PIN NO. 1
INDICATOR
5
2 3
7 6
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