AVAGO HFBR-0508

HFBR-0508 Series
HFBR-1528 Transmitter
HFBR-2528 Receiver
10 Megabaud Versatile Link Fiber Optic
Transmitter and Receiver
for 1 mm POF and 200 µm HCS®
Data Sheet
Description
Features
The HFBR-0508 Series consists of a fiber-optic transmitter and receiver operating at a 650 nm wavelength (red). The HFBR-1528 transmitter is an
LED in a low cost plastic housing designed to efficiently couple power into 200 µm diameter HCS
and 1 mm diameter POF. The HFBR-2528 receiver incor­
porates a PIN detec­tor and digital output IC compat­ible
with CMOS and TTL logic families.
• Data transmission at signal rates of dc to 10 MBd
• Up to 50 meters distances with 1 mm Plastic Optical
Fiber (POF)
• Up to 500 meters distances with 200 µm Hard Clad Silica
(HCS®)
• Wide dynamic range receiver allows operation from zero
to maximum link distance with a single transmitter
drive current
• Link distances specified for variations in temperature,
power supply, and fiber attenuation
• DC coupled receiver with CMOS/TTL output for easy
designs: no data encoding or digitizing circuitry required
• Pulse width distortion controlled to limit distortion from
low duty cycle or burst mode data
• High noise immunity
• Compatible with Avago’s Versatile Link family of connectors, for easy termination of fiber
HFBR-0508 links operate from DC to 10 MBd at distances
up to 50 meters with 1 mm POF and up to 500 meters
with 200 µm HCS®. No minimum link distances are required when using recom­mended circuits, simplifying
design.
Versatile Link components can be interlocked (Nplexed together) to minimize space and to provide
dual connec­tions with the duplex connectors. Up to
eight packages can be interlocked and inserted into a
printed circuit board.
POF and HCS are available in pre-connectored lengths or
can be easily field-terminated. A single transmitter drive
current for POF and HCS allows both fibers to be used
with a single design.
Applications
• Industrial control and factory automation
• Serial field buses
• Intra-system links; Board-to-Board, Rack-to-Rack
• Extension of RS-232, RS-485
• Elimination of ground loops
• High voltage isolation
• Reduces voltage transient susceptibility
HCS® is a registered trademark of SpecTran Corporation.
CAUTION:. 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.
HFBR-0508 Series 10 MBd Data Link
Typical Link Performance, TA = +25°C
Parameter
Symbol
Signaling Rate
fS
Link Distance with Extra Low Loss POF Cable
Link Distance with 200 µm HCS Cable
Typ.[1]
15
100
900
Unit
Condition
Mb/s NRZ
m 10 MBd
m 10 MBd
Specified Link Performance, TA = -40° to +85°C, DC to 10 MBd, unless otherwise noted.
Parameter
Symbol
Signaling Rate
f S
Link Distance with Extra Low
Loss POF Cable
Link Distance with 200 µm
HCS Cable
Pulse Width Distortion
PWD
Min.
DC
0.1
0.1
0.1
0.1
0.1
0.1
-30
-50
Max.
Unit Condition
10
Mb/s NRZ
50
m
+25°C
40
0 to +70°C
30
-40 to +85°C
500
m
+25°C
300
0 to +70°C
100
-40 to +85°C
+30
ns
25 – 75% Duty Cycle
+50
ns
Arbitrary Duty Cycle
Note
2
2, 3, 5
2, 4, 5
Note
2
2, 3, 5
2, 4, 5
2
Absolute Maximum Ratings
Parameter
Symbol
Min.
Storage and Operating Temperature
TS,O
-40
Receiver Supply Voltage
VCC
-0.5
Receiver Average Output Current
IO,AVG
-16
Receiver Output Power Dissipation
POD
Transmitter Peak Forward Input Current
IF,PK
Transmitter Average Forward Input Current
IF,AVG
Transmitter Reverse Input Voltage
VR
Lead Soldering Cycle Temp
TSOL
Time
Max.
+85
+5.5
+16
80
90
60
3
+260
10
Unit
°C
V
mA
mW
mA
mA
V
°C
sec
Note
6
7
7
Recommended Operating Conditions
Parameter
Ambient Temperature
Power Supply Voltage
Transmitter Peak Forward Current
Transmitter Average Forward Current
Fanout (7400 Series TTL)
Symbol
Min.
TA
-40
VCC
4.75
IF,PK
20
IF,AV
N
Max.
+85
5.25
90
60
1
Unit Condition
°C
V
<100 mVp-p Noise
mA
mA
Note
6
Notes:
1. Typical data at +25°C, VCC = 5 V.
2. With recommended transmitter and receiver application circuits (60 mA nominal drive current).
3. POF is HFBR-R/EXXYYY plastic (1 mm) optical fiber. Worst case attenuation used (0.23 dB/m from -40°C to +85°C at 660 nm).
4. HCS is HFBR-H/VXXYYY hard clad silica (200/230 µm) fiber. Worst case attenuation is used (10 dB/km from 0°C to +70°C and 12 dB/km from
-40°C to +85°C at 650 nm).
5. BER ≤ 10-9, 223 - 1 PRBS NRZ 10 MBd.
6. For IF,PK > 60 mA, the duty factor must maintain IF,AV ≤ 60 mA and pulse with ≤ 1 µs.
7. 1.6 mm below seating plane.
8 GROUND
HFBR-1528 Transmitter
The HFBR-1528 transmitter incorporates a 650 nm LED in
a light gray, nonconductive plastic housing. The high light
output power enables the use of both plastic optical fiber
(POF) and Hard Clad Silica (HCS) fiber. This transmitter can
be operated up to 10 MBd using a simple driver circuit. The
HFBR-1528 is com­pat­ible with all Versatile Link connectors.
Parameter
Symbol
2
CATHODE
GROUND
3
GROUND
4
5 GROUND
SEE NOTE 5
HFBR-1528 Transmitter, Top View
Electrical and Optical Characteristics: TA = -40° to +85°C unless otherwise noted.
1
ANODE
HFBR-1528 Transmitter
Min.
Typ.[1]
Max.
Units
TA (°C)
Conditions
Note
Peak Output Power
PT
1
mm
POF,
60
mA
-6.0
-3.5
0.0
dBm
+25
IF, dc = 60 mA
-6.9
+0.5
0 to +70
2, 3
Fig. 2
-7.2
+1.3
-40 to +85
Peak Output Power
PT
1
mm
POF,
20
mA
-15.6
-2.0
IF,dc = 20 mA
-16.5
-1.5
0 to +70
2, 3
Fig. 2
-16.8
-0.7
-40 to +85
Peak Output Power
PT
200 µm HCS, 60 mA
-16.1
-8.5
IF,dc = 60 mA
-17.0
-8.0
0 to +70
2, 3
Fig. 2
-17.3
-7.2
-40 to +85
-9.0
-12.5
dBm
dBm
Optical Power Tem-
∆PT /∆T
perature Coefficient
-0.40
%/°C
-0.02
dB/°C
Peak Emission
λP
Wavelength
650
640
635
Peak Wavelength
Temperature
Coefficient
∆λ/∆T
Spectral Width
FWHM
Forward Voltage
Forward Voltage Tem-
perature Coefficient
Reverse Input Break-
down Voltage
VF
1.8
∆VF /∆T
VBR
3.0
660
662
0.12
21
2.1
nm
2.65
-1.8
13
+25
+25
0 to +70
-40 to +85
nm/°C
nm
V
NA
0.5
Thermal Resistance,
Junction to Case
θjc
140
V
tf
10
Fig. 3
Fig. 1
Fig. 1
IF,dc = -10 µA
VF = 0 V,
f = 1 MHz
°C/W
50 Ω Optical Rise Time
tr
13
ns
50 Ω Optical Fall Time
IF,dc = 60 mA
mV/°C
Diode Capacitance
CO
60
pF
Transmitter
Numerical Aperture
Fig. 3
4
10% to 90%,
IF = 60 mA
ns
Notes:
1. Typical data are at 25°C.
2. Optical power measured at the end of 0.5 meters of 1 mm diameter plastic or 200 µm diameter hard clad silica fiber with a large area detector.
3. Minimum and maximum values for PT over temperature are based on a fixed drive current. The recommended drive circuit has temperature
compensation which reduces the variation in PT over temperature; refer to Figures 4 and 6.
4. Typical value measured from junction to PC board solder joint for horizontal mount package, HFBR-1528.
5. Pins 5 and 8 are for mounting and retaining purposes, but are electrically connected; pins 3 and 4 are electrically isolated. It is recommended
that pins 3, 4, 5 and 8 all be connected to ground to reduce coupling of electrical noise.
6. Refer to the “Plastic Optical Fiber and HCS Fiber Cable and Connectors for Versatile Link” Technical Data Sheet for cable connector options for 1
mm plastic and 200 µm HCS optical fiber.
VF – FORWARD VOLTAGE – V
-40° C
0° C
2.3
25° C
70° C
2.1
1.9
85° C
1.7
1.5
1
10
100
PT – NORMALIZED OUTPUT POWER – dB
2.5
IF,DC – TRANSMITTER DRIVE CURRENT – mA
Figure 1. Typical Forward Voltage vs. Drive Current.
10
-40° C
0
25° C
-10
85° C
-20
-30
-40
1
10
Figure 2. Typical Normalized Optical Power vs. Drive Current.
HFBR-1528 fig 1
HFBR-1528 fig 2
1.2
1.4
-40° C
1.2
NORMALIZED OUTPUT POWER
NORMALIZED SPECTRAL OUTPUT POWER
100
IF,DC – TRANSMITTER DRIVE CURRENT – mA
0° C
1.0
25° C
0.8
70° C
0.6
85° C
0.4
0.2
0
610
630
650
670
690
VCC = 5.25 V
1.1
VCC = 5.0 V
1.0
0.9
VCC = 4.75 V
0.8
0.7
-40
-20
WAVELENGTH (nm)
0
20
40
60
80
TEMPERATURE – °C
Figure 3. Typical Normalized Optical Spectra.
Figure 4. Typical Normalized Optical Power vs. Temperature (in Recommended Drive Circuit).
HFBR-1528 fig 3
HFBR-1528 fig 4
VCC
C1
2
R1
C2
R2
1
1
PWD – ns
0
-1
3
6
VCC = 5.0 V
8
-3
DATA
5
7
4
-4
0
4
5
1/2 SN75451
VCC = 4.75 V
-20
8
2
VCC = 5.25 V
-2
-5
-40
HFBR-1528
20
40
60
80
TEMPERATURE – °C
Figure 5. Typical Optical Pulse Width Distortion vs. Temperature and Power
Supply Voltage (in Recommended Drive Circuit).
VALUE
TOLERANCE
R1
2 KΩ
5%
R2
47 Ω
1%
C1
0.1 µF
20 %
C2
1.0 µF
20 %
Figure 6. Recommended Transmitter Drive Circuit
(IF,on = 60 mA Nominal at TA = 25°C). HFBR-1528 fig 6
HFBR-1528 fig 5
WARNING: WHEN VIEWED UNDER SOME CONDITIONS, THE OPTICAL PORT MAY EXPOSE THE EYE BEYOND THE MAXIMUM PERMISSIBLE EXPOSURE RECOMMENDED IN ANSI Z136.2, 1993. UNDER MOST VIEWING CONDITIONS THERE IS NO EYE HAZARD.
HFBR-2528 Receiver
The HFBR-2528 receiver 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 10 MBd with low PWD
for arbitrary data patterns.
The receiver output is a “push-pull”
stage compatible with TTL and
CMOS logic. The receiver housing is
a dark, conductive plastic, compatible with all Versatile Link connectors.
GROUND 5
4
3
IC
2
1
NO CONNECT
VCC
GROUND
VO
GROUND 8
SEE NOTES 5,7
HFBR-2528 Receiver, Top View
Electrical and Optical Characteristics: TA = -40° to +85°C, 4.75 V < VCC < 5.25 V, unless otherwise noted.
HFBR-2528 Receiver
Parameter
Symbol Min. Typ.[1] Max.
Unit
TA (°C) Condition Peak POF Sensitivity:
PRL,min
-23.0 -21.0 dBm
+25
1 mm POF,
Minimum Input for
-20.0
0 to +70 |PWD| < 30 ns
Logic “0”
-19.5
-40 to +85
Peak POF Overdrive
PRL,max +1.0 +5.0
dBm
+25
1 mm POF,
Limit:Maximum
+0.0
0 to +70 |PWD| < 30 ns
Input for Logic “0”
-1.0
-40 to +85
Peak POF Off State
PRH,max
-42
dBm
1 mm POF
Limit: Maximum
Input for Logic “1”
Peak HCS
PRL,min
-25.0 -23.0 dBm
+25
200 µm HCS,
Sensitivity: Minimum
-22.0
0 to +70 |PWD| < 30 ns
Input for Logic “0”
-21.5
-40 to +85
Peak HCS Overdrive
PRL,max -1.0 +3.0
dBm
+25
200 µm HCS,
Limit: Maximum
-2.0
0 to +70 |PWD| < 30 ns
Input for Logic “0”
-3.0
-40 to +85
Peak HCS Off State
PRH,max
-44
dBm
200 µm HCS
Limit: Maximum
Input for Logic “1”
Supply Current
ICC
27
45
mA
VO = Open
High Level Output
VOH
4.2
4.7
V
IO = -40 µA
Voltage
Low Level Output
VOL
0.22
0.4
V
IO = +1.6 mA
Voltage
Output Rise Time
tr
12
30
ns
CL = 10 pF
Output Fall Time
tf
10
30
ns
CL = 10 pF
Thermal Resistance,
θjc
200
°C/W
Junction to Case
Electric Field
EMAX
8
V/m
Near Field,
Immunity
Electrical
Field Source
Power Supply
PSNI
0.1
0.4
Vpp
Sine Wave
Noise Immunity
DC - 10 MHz
Note
2,6
Fig.
2,4
2,3,
6
1,2,
3
2,6,
8
2,6
2,3,
6
2,6,
8
6
6
4
5
6
Notes:
1. Typical data are at +25°C, VCC = 5.0 V.
2. Input power levels are for peak (not average) optical input levels. For 50% duty cycle data, peak optical power is twice the average optical
power.
3. Receiver overdrive (PRL,max) is specified as the limit where |PWD| will not exceed 30 ns. The receiver will be in the correct state (logic “0”) for optical powers above PRL,max. However, it may not meet a 30% symbol period PWD if the overdrive limit is exceeded. Refer to Figure 2 for PWD performance at high received optical powers.
4. Typical value measured from junction to PC board solder joint for horizontal mount package, HFBR-2528.
5. Pins 5 and 8 are electrically connected to the conductive housing and are also used for mounting and retaining purposes. It is required that
pins 5 and 8 be connected to ground to maintain conductive housing shield effectiveness.
6. In recommended receiver circuit, with an optical signal from the recommended transmitter circuit.
7. Pin 4 is electrically isolated internally. Pin 4 may be externally connected to pin 1 for board layout compatibility with HFBR-25X1, HFBR-25X2
and HFBR-25X4. Otherwise it is recommended pin 4 be grounded as in Figure 5.
8. BER ≤ 10E-9, includes a 10.8 dB margin below the receiver switching threshold level (signal to noise ratio = 12).
30
6
5
20
VCC = 5.0 V
RECEIVED PWD – ns
RECEIVED POWER – dBm
VCC = 5.25 V
4
VCC = 4.75 V
3
2
10
0
-10
-20
1
0
-40 -20
0
20
40
60
80
-30
-22
100
-18
-14
-10
-6
-2
2
PRL – RECEIVER OPTICAL INPUT POWER – dBm
TEMPERATURE – °C
Figure 1. Typical POF Receiver Overdrive, PRL,max, at 10 MBd, vs. Temperature and Power Supply Voltage.
Figure 2. Typical POF Receiver Pulse Width Distortion vs. Optical
Power at 10 MBd.
HFBR-2528 fig 2
HFBR-2528 fig 1
16
-13
15
-14
13
PWD – ns
PWD – ns
14
12
-15
-16
11
-17
10
9
4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
-18
4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
VCC – VOLTS
VCC – VOLTS
Figure 3. Typical POF Receiver Pulse Width Distortion vs. Power Supply Voltage at High Optical Power (0 dBm,pk, 10 MBd).
HFBR-2528 fig 4
HFBR-2528 fig 3
HFBR-2528
R1
4
5
3
2
IC
1
8
VALUE
TOLERANCE
R1
2.7 Ω
5%
C1
0.1 µF
20 %
Figure 5. Recommended Receiver Application Circuit.
HFBR-2528 fig 5
Figure 4. Typical POF Receiver Pulse Width Distortion vs. Power Supply Voltage at Low
Optical Power, (-21 dBm,pk, 10 MBd).
VCC
C1
DATA
8 GROUND
3 VCC
FIRST BIT
BURST PWD
CORRECTION
AMPLIFIER
PIN
PHOTODIODE
COMPARATOR
1 VO, DATA
THRESHOLD
GENERATOR
REFERENCE
VOLTAGE
2 GROUND
5 GROUND
Figure 6. HFBR-2528 Receiver Block Diagram.
HFBR-2528 fig 6
Versatile Link Mechanical Dimensions
Versatile Link Printed Circuit Board
Layout Dimensions
PIN NO.1 INDICATOR
7.62
(0.300)
2.0
(0.080)
6.5
(0.255)
2.54
(0.100)
1.01° (0.040) DIA.
10.2
(0.400)
5.1
(0.200)
18.9
(0.743)
0.64
(0.025)
7.62
(0.300)
5
0.51
(0.020)
1.27
(0.050)
2.5
(0.100)
0.64 (0.025) DIA.
1.73
(0.068)
3.0
(0.118)
NOTE: ALL DIMENSIONS IN MM (INCHES).
ALL DIMENSIONS ± 0.25 mm UNLESS
OTHERWISE SPECIFIED.
ELECTRICAL PIN FUNCTIONS
TRANSMITTER
PIN NO. HFBR-1528
1
2
3
4
5
8
ANODE
CATHODE
GROUND*
GROUND*
GROUND**
GROUND**
3
2
1
4.2
(0.165)
7.62
(0.300)
3.81(0.150) MAX.
3.56 (0.140) MIN.
4
RECEIVER
HFBR-2528
SIGNAL, VO
GROUND
VCC (+5 V)
GROUND*
GROUND**
GROUND**
* NO INTERNAL CONNECTION,
GROUND CONNECTION RECOMMENDED.
** PINS 5 AND 8 CONNECTED INTERNALLY
TO EACH OTHER.
7.62
(0.300)
8
1.85 MIN.
(0.073)
TOP VIEW
HFBR-0508 Circuit Board Layout
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www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries.
Data subject to change. Copyright © 2007 Avago Technologies Limited. All rights reserved. Obsoletes 5988-5674EN
AV02-0909EN - December 7, 2007