HFBR-1506AM/HFBR-2506AM
Fiber Optic SMA Transmitters and Receivers for
16 MBd SERCOS Applications
Data Sheet
Description
SERCOS, an acronym for
SErial Realtime
COmmunications Systems,
is a standard digital
interface for communication in industrial CNC
applications. SERCOS is a European (EN 61491) and
international standard (IEC 61491). The optical
interface allows data rates of 2,4,8 and 16 MBd and
data transfer between numerical controls and drives
via fiber-optic rings, with voltage isolation and noise
immunity. The HFBR-1506AM and HFBR-2506AM
products have a guaranteed performance up to 16
MBd.
Features
•
•
•
•
•
•
Meets Industrial SERCOS 16MBd standard
SMA ports
650 nm wavelength
Metal coated, plastic packaging
Specified for use with 1 mm POF and 200 µm HCS
DC - 16 MBd data rate
Applications
•
Industrial Control Data Links
•
Factory Automation Data Links
•
Voltage Isolation Applications
°, ±, ≥,≤,≠,∅, ∞,µ,π,ο,θ,λ, ρ,σ,γ,φ,η, δ,χ,β,α,Ω,, Σ,,,∏,, ∝,∂,τ,υ,ϖ, ω,ξ,ψ,ζ,∅, ≈,,, •
•
Bullet Bold
Obsoletes: 5988-8402EN
5988-9121EN
Package Information
The transmitters and receivers are housed in a low-
cost, dual-in-line package that is made of high strength,
heat resistant, chemically resistant and UL 94V-O (UL
file # E121562) flame retardant plastic. Both the
transmitter and receiver are coated with a layer of
conductive alloy for better air discharge (ESD)
performance. The package is designed for auto
insertion and wave soldering so it is ideal for high
volume production applications.
Handling and Design Information
When soldering, it is advisable to leave the protective
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.
Recommended Chemicals for Cleaning/Degreasing
Alcohols:
methyl, isopropyl, isobutyl.
Aliphatics:
hexane, heptane.
Other:
soap solution, naphtha.
Do not use
partially halogenated hydrocarbons such
as 1,1,1 trichloroethane, ketones such as MEK, acetone,
chloroform, ethyl acetate, methylene dichloride,
phenol, methylene chloride or N-methylpyrolldone.
Also, Agilent does not recommend the use of cleaners
that use halogenated hydrocarbons because of their
potential environmental harm.
CAUTION:
The small junction size inherent in the design of these components increases the components’ susceptibility to damage
from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of these components
to prevent damage and/or degradation which may be induced by ESD.
Table 1. Link Performance Specification
0 °C to +70 °C unless otherwise noted.
Parameter
Link distance with
HFBR-1506AM/2506AM
Symbol
I
Min
0.1
0.1
Max
45
200
Unit
m
m
Condition
POF
HCS
Reference
Note 1, 2, 4, 6
Note 1, 3, 5, 6
Notes:
1. 60 mA nominal drive current.
2. POF HFBR-Exxyyy 0.23 dB/m worst case attenuation.
3. HCS 10 dB/km worst case attenuation.
4. Including a 3 dB optical safety margin accounting for link service lifetime.
5. Including a 2 dB optical safety margin accounting for link service lifetime.
6. Signaling rate dc to 16 MBd.
2
HFBR-1506AM Transmitter
4
5
6
7
1
8
The HFBR-1506AM transmitter incoporates a 650nm
LED in a metal-coated, plastic housing. The high light
output power enables the use of both plastic optical
fiber (POF) and Hard Clad Silica (HCS). This transmitter
can operate up to 16MBd using a simple driver circuit.
The HFBR-1506AM is compatible with SMA connectors.
PIN
1
4
5
6
7
8
FUNCTION
CONNECTED TO PIN 4
CONNECTED TO PIN 1
GND
GND
CATHODE
ANODE
BOTTOM VIEW,
HFBR-1506AM
SEE NOTE 10
Figure 1.
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Peak Forward Input Current
Average Forward Input Current
Reverse Input Voltage
Lead Soldering Cycle
Temp
Time
Symbol
T
S
,
O
Min
-40
Max
+85
90
60
3
Unit
°C
mA
mA
V
Notes
I
F
,
PK
I
F
,
AVG
V
R
1
T
SOL
T
SOL
260
10
°C
s
2
Notes:
1. For I F_PK > 60 mA, the duty factor must maintain I F_AVG <= 60 mA and pulse width <= 1 µs.
2. 1.6 mm below seating plane.
Electrical Characteristics Table
0 °C to +70 °C unless otherwise noted.
Parameter
Optical Power Temperature Coefficient
Forward Voltage
Forward Voltage Temperature Coefficient
Breakdown Voltage
Peak Emission Wavelength
Full Width Half Max
Diode Capacitance
Thermal Resistance
Rise Time (10% to 90%)
Fall Time (90% to 10%)
Symbol
∆P
T
/∆T
V
F
∆V
F
/∆T
V
BR
l
PK
FWHM
C
O
q
JC
t
r
t
f
Min
Typ
1
-0.02
Max
Unit
dB/°C
Condition
Notes
1.8
2.1
-1.8
2.65
V
mV/°C
V
I
F
,
dc
= 60 mA
See Figure 2
See Figure 2
3.0
640
13
650
21
60
140
15
15
660
30
I
F
,
dc
= -10 µA
See Figure 4
See Figure 4
V
F
= 0 V, f = 1 MHz
Notes 2, 3
10% to 90%
I
F
= 60 mA
See Figure 6
See Figure 6
nm
nm
pF
°C/W
ns
ns
Notes:
1. Typical data are at +25 °C
2. Thermal resistance is measured with the transmitter coupled to a connector assembly and fiber, and mounted on a printed circuit board.
3. To further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good RF circuit design.
4. Pins 1 and 4 are for mounting and retaining purposes, but are electrically connected, pins 5 and 6 are electrically isolated. It is recommended
that pins 1, 4, 5 and 6 all be connected to ground to reduce coupling of elecrical noise.
3
Peak Output Power
0 °C to +70 °C unless otherwise noted.
Model Number
HFBR-1506AM
Symbol
Pr
Min
-6.0
-18.0
Max
-2.0
-10.0
Unit
dBm
Condition
POF, I
F
,
dc
= 60 mA
HCS
®
, I
F
,
dc
= 60 mA
Reference
Note 1
Figure 3
Notes:
1. Optical power measured at the end of 1 meters of 1 mm diameter plastic or 200 µm hard/plastic clad silica optical fiber with a large area
detector.
2.5
10
P
T
– NORMALIZED OUTPUT POWER – dB
-40 ˚C
2.3
0 ˚C
25 ˚C
2.1
70 ˚C
-40 ˚C
0
NORMALIZED SPECTRAL OUTPUT POWER
1.4
1.2
-40 ˚C
V
F
– FORWARD VOLTAGE – V
25 ˚C
0 ˚C
1.0
25 ˚C
0.8
0.6
0.4
0.2
0
610
630
650
670
690
70 ˚C
85 ˚C
-10
85 ˚C
-20
1.9
85 ˚C
1.7
-30
1.5
1
10
100
I
F,DO
– TRANSMITTER DRIVE CURRENT – mA
-40
1
10
100
I
F,DO
– TRANSMITTER DRIVE CURRENT – mA
WAVELENGTH – nm
Figure 2. Typical Forward Voltage vs Drive
Current
Figure 3. Typical Normalized Optical
Power vs Drive Current
Figure 4. Typical Normalized Optical
Spectra
C1 100pF
R1 100
R7 500
C2 not
R2 not used
R8 not used
C3
100pF
used
+5V Vcc
R11
R3 100
HFBR-1506AM
HFBR-2506AM
C5
R4 100
R5 100
R9 100
C4
56pF
R6 not used
R10 150
Figure 5. Recommended drive circuit according to SERCOS An17 (I
fnom
~ 35 mA)
4
HFBR-2506AM Receiver
The HFBR-2506AM receiver is housed in a metal-coated,
plastic package, consists of a silicon PIN photodiode
and digitizing IC to produce a logic compatible output.
The IC includes a unique circuit to correct the pulse
width distortion of the first bit after a long idle period.
This enables operation from DC to 16MBd with low
PWD for arbitrary data patterns.
The receiver is a "push-pull" stage compatible with TTL
and CMOS logic. The HFBR-2506AM is compatible with
SMA connectors.
4
5
6
7
PIN
1
4
5
6
7
8
FUNCTION
CONNECTED TO PIN 4
CONNECTED TO PIN 1
NO CONNECT
VCC
GND
VO
1
8
BOTTOM VIEW,
HFBR-2506AM
SEE NOTE 4
Figure 6.
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Supply Voltage
Average Output Current
Output Power Dissipation
Lead Soldering Cycle
Temp
Time
Notes:
1. 1.6 mm below seating plane.
Symbol
T
S
,
V
CC
I
O
,
AVG
P
OD
O
Min
-40
-0.5
Max
+85
5.5
16
80
Unit
°C
V
mA
mW
Notes
T
SOL
T
SOL
260
10
°C
s
1
Electrical Characteristics Table
0 °C to +70 °C, 4.75 V < V
CC
< 5.25 V, V
P-P
Noise < = 100 mV unless otherwise noted.
Parameter
Peak Input Power Level Logic HIGH
Symbol
P
RH
P
RL
Min
Typ
1
Max
-42
-44
Unit
dBm
Condition
1 mm POF
200 µm HCS
1 mm POF
200 µm HCS
|PWD| < 19 ns
V
O
= Open
I
O
= 40 µA
I
O
= 1.6 mA
Notes
Peak Input Power Level Logic LOW
-20
-22
-2
-10
dBm
2
Supply Current
High Level Output Voltage
Low Level Output Voltage
Pulse Width Distortion
Propagation Delay Time
I
CC
V
OH
V
OH
PWD
T
P_HL
or
_LH
27
4.2
4.7
0.22
-19
45
mA
V
0.4
19
150
V
ns
ns
Notes:
1. Typical data are at +25 °C, V
CC
= 5.0 V
2. BER <= 10E-9, includes a 10.8 dB margin below the receiver switching threshold level (signal to noise ratio =12)
3. Pins 1 and 4 are for mounting and retaining purposes, but are electrically connected, pins 5 and 6 are electrically isolated. It is recommended
that pins 1, 4, 5 and 6 all be connected to ground to reduce coupling of elecrical noise
5
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