HFBR-0507Z Series
HFBR-15X7Z Transmitters
HFBR-25X6Z Receivers
125 Megabaud Versatile Link
The Versatile Fiber Optic Connection
Data Sheet
Description
The 125 MBd Versatile Link (HFBR-0507Z Series) is the
most cost-e ective ber-optic solution for transmission
of 125 MBd data over 100 meters. The data link consists
of a 650 nm LED transmitter, HFBR-15X7Z, and a PIN/preamp receiver, HFBR-25X6Z. These can be used with lowcost plastic or silica ber. One mm diameter plastic ber
provides the lowest cost solution for distances under 25
meters. The lower attenuation of silica ber allows data
transmission over longer distance, for a small di erence
in cost. These com po nents can be used for high speed
data links without the problems common with copper
wire solutions, at a competitive cost.
The HFBR-15X7Z transmitter is a high power 650 nm
LED in a low cost plastic housing designed to e ciently
couple power into 1 mm diameter plastic optical ber
and 200 μm Hard Clad Silica (HCS®) ber. With the recommended drive circuit, the LED operates at speeds from
1-125 MBd. The HFBR-25X6Z is a high band width analog
receiver con tain ing a PIN photodiode and internal transimpedance ampli er. With the recommended application circuit for 125 MBd operation, the performance of
the complete data link is speci ed for of 0-25 meters with
plastic ber and 0-100 meters with 200 μm HCS® ber. A
wide variety of other digitizing circuits can be combined
with the HFBR-0507Z Series to optimize perfor-mance
and cost at higher and lower data rates.
Features
RoHS-compliant
Data transmission at signal rates of 1 to 125 MBd over
distances of 100 meters
Compatible with inexpen sive, easily terminated plas-
tic optical ber, and with large core silica ber
High voltage isolation
Transmitter and receiver application circuit
sche matics and recommended board layouts available
Interlocking feature for single channel or duplex links,
Computer-to-peripheral data links, PC bus extension
Industrial control
Proprietary LANs
Digitized video
Medical instruments
Reduction of lightning and voltage transient suscepti-
bility
HCS® is a registered trademark of Spectran Corporation.
Page 2
HFBR-0507Z Series
125 MBd Data Link
Data link operating conditions and performance are
speci ed for the HFBR-15X7Z transmitter and HFBR-25X6Z
receiver in the recommended applications circuits shown
in Figure 1. This circuit has been optimized for 125 MBd
operation. The Applications Engineer ing Department in
the Avago Optical Communication Division is available to
assist in optimizing link performance for higher or lower
speed operation.
Recommended Operating Conditions for the Circuits in Figures 1 and 2.
Parameter Symbol Min. Max. Unit Reference
Ambient Temperature TA 0 70 °C
Supply Voltage V
Data Input Voltage – Low V
Data Input Voltage – High V
Data Output Load R
Signaling Rate f
Duty Cycle D.C. 40 60 % Note 2
+4.75 +5.25 V
CC
V
IL
V
IH
45 55 Ω Note 1
L
1 125 MBd
S
-1.89 V
CC
-1.06 V
CC
-1.62 V
CC
-0.70 V
CC
Link Performance: 1-125 MBd, BER ≤ 10
-9
, under recommended operating conditions with recommended transmit
and receive application circuits.
Parameter Symbol Min.
Optical Power Budget, 1 m POF OPB
Optical Power Margin, OPM
11 16 dB Note 5,6,7
POF
3 6 dB Note 5,6,7
POF,20
[3]
Typ.
20 m Standard POF
Link Distance with l 20 27 m
Standard 1 mm POF
Optical Power Margin, OPM
3 6 dB Note 5,6,7
POF,25
25 m Low Loss POF
Link Distance with Extra l 25 32 m
Low Loss 1 mm POF
Optical Power Budget, 1 m HCS OPB
Optical Power Margin, OPM
7 12 dB Note 5,6,7
HCS
3 6 dB Note 5,6,7
HCS,100
100 m HCS
Link Distance with HCS Cable l 100 125 m
Notes:
1. If the output of U4C in Figure 1, page 4 is transmitted via coaxial cable, terminate with a 50 Ω resistor to V
2. Run length limited code with maximum run length of 10 μs.
3. Minimum link performance is projected based on the worst case speci cations of the HFBR-15X7Z transmitter, HFBR-25X6Z receiver,
and POF cable, and the typical performance of other components (e.g. logic gates, transistors, resistors, capacitors, quantizer, HCS cable).
4. Typical performance is at 25°C, 125 MBd, and is measured with typical values of all circuit components.
5. Standard cable is HFBR-RXXYYYZ plastic optical ber , with a maximum attenuation of 0.24 dB/m at 650 nm and NA = 0.5.
Extra low loss cable is HFBR-EXXYYYZ plastic optical ber, with a maximum attenuation of 0.19 dB/m at 650 nm and NA = 0.5.
HCS cable is HFBR-H/VXXYYY glass optical ber, with a maximum attenuation of 10 dB/km at 650 nm and NA = 0.37.
6. Optical Power Budget is the di erence between the transmitter output power and the receiver sensitivity, measured after 1 meter of ber.
The minimum OPB is based on the limits of optical component performance over temperature, process, and recommended power supply
variation.
7. The Optical Power Margin is the available OPB after including the e ects of attenuation and modal dispersion for the minimum link distance:
OPM = OPB - (attenuation power loss + modal dispersion power penalty). The minimum OPM is the margin available for longterm LED LOP
degradation and additional xed passive losses (such as in-line connectors) in addition to the minimum speci ed distance.
[4]
Max. Unit Condition Reference
- 2 V.
CC
2
Page 3
Plastic Optical Fiber (1 mm POF) Transmitter Application Circuit: Performance of the HFBR-15X7Z transmitter in the recommended application circuit (Figure 1) for POF; 1-125 MBd, 25°C.
Parameter Symbol Typical Unit Condition Note
Average Optical Power 1 mm POF P
Cycle
Average Modulated Power 1 mm POF P
Optical Rise Time (10% to 90%) t
Optical Fall Time (90% to 10%) t
High Level LED Current (On) I
Low Level LED Current (O ) I
Optical Overshoot - 1 mm POF 45 %
Transmitter Application Circuit I
Current Consumption - 1 mm POF
-9.7 dBm 50% Duty Note 1, Fig 3
avg
-11.3 dBm Note 2, Fig 3
mod
2.1 ns 5 MHz
r
2.8 ns 5 MHz
f
19 mA Note 3
F,H
3 mA Note 3
F,L
110 mA Figure 1
CC
Hard Clad Silica Fiber (200 μm HCS) Transmitter Application Circuit: Performance of the HFBR-15X7Z transmitter in the recommended application circuit (Figure 1) for HCS; 1-125 MBd, 25°C.
Parameter Symbol Typical Unit Condition Note
Average Optical Power 200 μm HCS P
Cycle
Average Modulated Power 200 μm HCS P
Optical Rise Time (10% to 90%) t
Optical Fall Time (90% to 10%) t
High Level LED Current (On) I
Low Level LED Current (O ) I
Optical Overshoot - 200 μm HCS 30 %
Transmitter Application Circuit I
Current Consumption - 200 μm HCS
Notes:
1. Average optical power is measured with an average power meter at 50% duty cycle, after 1 meter of ber.
2. To allow the LED to switch at high speeds, the recommended drive circuit modulates LED light output between two non-zero power levels.
The modulated (useful) power is the di erence between the high and low level of light output power (transmitted) or input power (received),
which can be measured with an average power meter as a function of duty cycle (see Figure 3). Average Modulated Power is de ned as one
half the slope of the average power versus duty cycle:
[P
Average Modulated Power =
(2) [0.80 - 0.20]
3. High and low level LED currents refer to the current through the HFBR-15X7Z LED. The low level LED “o ” current, sometimes referred to as
“hold-on” current, is prebias supplied to the LED during the o state to facilitate fast switching speeds.
-14.6 dBm 50% Duty Note 1, Fig 3
avg
-16.2 dBm Note 2, Fig 3
mod
3.1 ns 5 MHz
r
3.4 ns 5 MHz
f
60 mA Note 3
F,H
6 mA Note 3
F,L
130 mA Figure 1
CC
@ 80% duty cycle - P
avg
@ 20% duty cycle]
avg
3
Page 4
Plastic and Hard Clad Silica Optical Fiber Receiver Application Circuit: Performance
[4]
of the HFBR-25X6Z receiver in the recom-
mended application circuit (Figure 1); 1-125 MBd, 25°C unless otherwise stated.
Parameter Symbol Typical Unit Condition Note
Data Output Voltage - Low VOL V
Data Output Voltage - High V
Receiver Sensitivity to Average P
V
OH
-27.5 dBm 50% eye opening Note 2
min
Modulated Optical Power 1 mm POF
Receiver Sensitivity to Average P
-28.5 dBm 50% eye opening Note 2
min
Modulated Optical Power 200 μm HCS
Receiver Overdrive Level of Average P
-7.5 dBm 50% eye opening Note 2
max
Modulated Optical Power 1 mm POF
Receiver Overdrive Level of Average P
-10.5 dBm 50% eye opening Note 2
max
Modulated Optical Power 200 μm HCS
Receiver Application Circuit Current I
85 mA RL = ∞ Figure 1
CC
Consumption
Notes:
4. Performance in response to a signal from the HFBR-15X7Z transmitter driven with the recommended circuit at 1-125 MBd over 1 meter of
HFBR-RZ/EXXYYYZ plastic optical ber or 1 meter of HFBR-H/VXXYYY hard clad silica optical ber.
5. Terminated through a 50 Ω resistor to VCC - 2 V.
6. If there is no input optical power to the receiver, electrical noise can result in false triggering of the receiver. In typical applications, data encoding and error detection prevent random triggering from being interpreted as valid data. Refer to Applications Note 1066 for design guidelines.
-1.7 V RL = 50 Ω Note 5
CC
-0.9 V RL = 50 Ω Note 5
CC
T
9
Q2 BASE
8
Q1 BASE
7
T
6
RX V
5
NC
4
PIN 19 10H116
3
PIN 18 10H116
2
R
1
J1
X VEE
X VCC
X VEE
L1
CB70-1812
C1
0.001
R691R7
CC
+
C20
10
C19
0.1
V
BB
R22
1K
R24
1K
MC10H116FN
18
19
15
U4CU4AU4BU3
17
C15
0.1
C18
0.1
R25
R23
1K
1K
V
BB
R5
22
Q1
BFQ52
C16
0.1
C2
0.1
Q2
BFQ52
1
U1A
2
91
R18
51
MC10H116FNMC10H116FN
R19
51
R20
12
R21
62
74ACTQ00
C17
0.1
1014
7
4
5
3
20
2
V
CC
U5
TL431
3
R16
51
R17
V
CC
9
10
7
12
13
4
5
V
3V
V
9
8
51
3 V
+
C14
10
14
U1C
74ACTQ00
U1D
74ACTQ00
U1B
74ACTQ00
CC
BB
13
12
8
11
6
R14
1K
C3
0.1
C10
0.1
R15
1K
C13
0.1
C4
0.001
Q3
2N3904
C8*
R12
4.7
R13
4.7
C12
0.1
C11
0.1
V
BB
+
C5
10
C9
.47
1
2
3
4
C6
0.1
R8*
R9*
R10
15
ALL CAPACITOR VALUES
ARE IN MICRO FARADS,
WITH 10% TOLERANCE
(UNLESS OTHERWISE NOTED).
ALL RESISTANCES ARE IN
OHMS WITH 5% TOLERANCE
(UNLESS OTHERWISE NOTED).
8
5
HFBR-25X6Z
THE VALUES OF R8, R9, R11, AND
C8 ARE DIFFERENT FOR POF AND
HCS DRIVE CIRCUITS.
POF
300
R8
R9
300
R11
1K
C8
43 pF
R11*
HCS
82
82
470
120 pF
1
2
3
4
C7
0.001
8
U2
HFBR-15X7Z
5
TOLERANCE
1%
1%
1%
1%
Figure 1. Transmitter and receiver application circuit with +5 V ECL inputs and outputs.
4
Page 5
120 120
+5 V ECL
SERIAL DATA
SOURCE
0.1 μF
+5 V ECL
SERIAL DATA
RECEIVER
+
5 V
Ð
82
82
120 120
10 μF
+
+
0.1 μF
10 μF0.1 μF
0.1 μF
4.7 μH
82
82
4.7 μH
4.7 μH
9 TX V
8 TD
7 TD
6 TX V
5 RX V
4
3 RD
2 RD
1 R
X VEE
EE
CC
CC
FIBER-OPTIC
TRANSCEIVER
SHOWN IN
FIGURE 1
Figure 2. Recommended power supply lter and +5 V ECL signal terminations for the transmitter and receiver application circuit of Figure 1.
AVERAGE POWER Ð μW
200
150
100
50
0
204080100
0
DUTY CYCLE Ð %
AVERAGE
MODULATED
POWER
AVERAGE POWER,
50% DUTY CYCLE
60
21
19
17
15
13
11
OPTICAL POWER BUDGET ÐdB
9
30 50
10
DATA RATE Ð MBd
Figure 4. Typical optical power budget vs. data rate.Figure 3. Average modulated power.
POF
HCS
9070130 150
110
5
Page 6
125 Megabaud Versatile Link Transmitter
HFBR-15X7Z Series
Description
The HFBR-15X7Z transmitters incorporate a 650 nanometer LED in a horizontal (HFBR-1527Z) or vertical (HFBR-1537Z) gray housing. The HFBR-15X7Z transmitters
are suitable for use with current peaking to decrease
response time and can be used with HFBR-25X6Z receivers in data links operating at signal rates from 1 to 125
CATHODE
GROUND
GROUND
ANODE
1
2
3
4
SEE NOTE 6
megabaud over 1 mm diameter plastic optical ber or
200 μm diameter hard clad silica glass optical ber. Refer
to Applica tion Note 1066 for details for recom mended
interface circuits.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Unit Reference
Storage Temperature TS -40 85 °C
Operating Temperature T
Lead Soldering Temperature Cycle Time 260 °C Note 1, 9
10 s
Transmitter High Level Forward I
Input Current ≥ 1 MHz
Transmitter Average Forward Input Current I
Reverse Input Voltage V
-40 70 °C
O
120 mA 50% Duty Cycle
F,H
60 mA
F,AV
3 V
R
GROUND
GROUND
CAUTION: The small junction sizes inherent to the design of this component increase the component’s suscep ti bility to damage from
electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
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.
6
Page 7
Electrical/Optical Characteristics 0 to 70°C, unless otherwise stated.
Parameter Symbol Min. Typ.
Transmitter Output PT -9.5 -7.0 -4.8 dBm I
Optical Power, 1 mm POF -10.4 -4.3 0-70°C
Transmitter Output P
Optical Power, 1 mm POF -6.9 -0.0 0-70°C
Output Optical Power ΔPT -0.02 dB/°C
Temperature Coe cient ΔT
Peak Emission Wavelength
Peak Wavelength Δ 0.12 nm/°C
Temperature Coe cient ΔT
Spectral Width FWHM 21 nm Full Width,
Half Maximum
Forward Voltage V
Forward Voltage ΔV
Temperature Coe cient ΔT
Transmitter Numerical NA 0.5
Aperture
Thermal Resistance,
Junction to Case
Reverse Input Breakdown V
Voltage
Diode Capacitance C
f = 1 MHz
Unpeaked Optical Rise t
Time, 10% - 90% f = 100 kHz Note 5
Unpeaked Optical Fall t
Time, 90% - 10% f = 100 kHz Note 5
Notes:
1. 1.6 mm below seating plane.
2. Typical data is at 25°C.
3. Optical Power measured at the end of 0.5 meter of 1 mm diameter plastic or 200 μm diameter hard clad silica optical ber with a large area
detector.
4. Typical value measured from junction to PC board solder joint for horizontal mount package, HFBR-1527Z. jc is approximately
30°C/W higher for vertical mount package, HFBR-1537Z.
5. Optical rise and fall times can be reduced with the appropriate driver circuit; refer to Application Note 1066.
6. Pins 5 and 8 are primarily for mounting and retaining purposes, but are electrically connected; pins 3 and 4 are electrically unconnected. It is
recommended that pins 3, 4, 5, and 8 all be connected to ground to reduce coupling of electrical noise.
7. Refer to the Versatile Link Family Fiber Optic Cable and Connectors Technical Data Sheet for cable connector options for 1 mm plastic optical
ber and 200 μm HCS ber.
8. The LED current peaking necessary for high frequency circuit design contributes to electromagnetic interference (EMI). Care must be taken in
circuit board layout to minimize emissions for compliance with governmental EMI emissions regulations. Refer to Application Note 1066 for
design guidelines.
9. Moisture sensitivity level (MSL) is 3
-6.0 -3.0 -0.5 dBm I
T
-14.6 -13.0 -10.5 dBm I
T
640 650 660 nm
PK
1.8 2.1 2.4 V IF = 60 mA
F
-1.8 mV/°C
F
140 °C/W Note 4
jc
3.0 13 V I
BR
60 pF VF = 0 V,
O
12 ns IF = 60 mA Figure 1
r
9 ns IF = 60 mA Figure 1
f
[2]
Max. Unit Condition Note
= 20 mA, 25°C Note 3
F,dc
= 60 mA, 25°C Note 3
F,dc
= 60 mA, 25°C Note 3
F,dc
= -10 μA
F,dc
7
Page 8
HP8082A
PULSE
GENERATOR
BCP MODEL 300
500 MHz
BANDWIDTH
SILICON
AVALANCHE
PHOTODIODE
1.2
1.0
0.8
0.6
0.4
° C
0
25° C
70
° C
50 OHM
LOAD
RESISTOR
fall times.
2.4
2.2
2.0
1.8
- FORWARD VOLTAGE - V
F
V
1.6
HP54002A
50 OHM BNC
INPUT POD
°
C
0
25
°
C
°
C
70
1
I
- TRANSMITTER DRIVE CURRENT (mA)
F,DC
10100
HP54100A
OSCILLOSCOPE
0.2
NORMALIZED SPECTRAL OUTPUT POWER
0
620
640
630650670 680
WAVELENGTH (nm)
660
Figure 2. Typical spectra normalized to the 25°C peak.Figure 1. Test circuit for measuring unpeaked rise and
0
-5
0
°
-10
-15
-20
- NORMALIZED OUTPUT POWER - dB
T
P
-25
1
I
- TRANSMITTER DRIVE CURRENT (mA)
F,DC
C
25° C
°
C
70
10100
Figure 3. Typical forward voltage vs. drive current.Figure 4. Typical normalized output optical power vs.
drive current.
8
Page 9
125 Megabaud Versatile Link Receiver
HFBR-25X6Z Series
Description
The HFBR-25X6Z receivers contain a PIN photodiode and
transimpedance pre-ampli er circuit in a horizontal (HFBR-2526Z) or vertical (HFBR-2536Z) blue housing, and
are designed to interface to 1mm diameter plastic optical ber or 200 μm hard clad silica glass optical ber. The
receivers convert a received optical signal to an analog
output voltage. Follow-on circuitry can optimize link performance for a variety of distance and data rate requirements. Electrical bandwidth greater than 65 MHz allows
design of high speed data links with plastic or hard clad
silica optical ber. Refer to Applica tion Note 1066 for details for recommended interface circuits.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Unit Reference
Storage Temperature TS -40 +75 °C
Operating Temperature T
Lead Soldering Temperature 260 °C Note 1, 11
Cycle Time
10 s
Signal Pin Voltage V
Supply Voltage V
Output Current I
0 +70 °C
A
-0.5 VCC V
O
-0.5 6.0 V
CC
25 mA
O
GROUND
GROUND
SEE NOTES 2, 4, 9
4
3
2
1
V
CC
GROUND
GROUND
SIGNAL
CAUTION: The small junction sizes inherent to the design of this component increase the component’s suscep ti bility to damage from
electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
9
Page 10
Electrical/Optical Characteristics 0 to 70°C; 5.25 V ≥ VCC ≥ 4.75 V; power supply must be ltered (see Figure 1, Note 2).
Parameter Symbol Min. Typ. Max. Unit Test Condition Note
AC Responsivity 1 mm POF R
AC Responsivity 200 μm HCS R
RMS Output Noise V
Equivalent Optical Noise Input P
Power, RMS - 1 mm POF
2. The signal output is an emitter follower, which does not reject noise in the power supply. The power supply must be ltered as in Figure 1.
3. Typical data are at 25°C and VCC = +5 Vdc.
4. Pin 1 should be ac coupled to a load ≥ 510 Ω with load capacitance less than 5 pF.
5. Measured with a 3 pole Bessel lter with a 75 MHz, -3dB bandwidth.
6. The maximum Peak Input Optical Power is the level at which the Pulse Width Distortion is guaranteed to be less than the PWD listed under
Test Condition. P
MBd (for both POF and HCS input conditions).
7. 10 ns pulse width, 50% duty cycle, at the 50% amplitude point of the waveform.
8. Percent overshoot is de ned at:
(VPK - V
–––––––––––– 100%
V
9. Pins 5 and 8 are primarily for mounting and retaining purposes, but are electrically connected. It is recommended that these pins be connected to ground to reduce coupling of electrical noise.
10. If there is no input optical power to the receiver (no transmitted signal) electrical noise can result in false triggering of the receiver. In typical
applications, data encoding and error detection prevent random triggering from being interpreted as valid data. Refer to Application Note 1066
for design guidelines.
11. Moisture sensitivity level (MSL) is 4
is given for PWD = 5 ns for designing links at ≤ 50 MBd operation, and also for PWD = 2 ns for designing links up to 125
R,Max
1.7 3.9 6.5 mV/μW 650 nm Note 4
P,APF
4.5 7.9 11.5 mV/μW
P,HCS
0.46 0.69 mV
NO
- 39 -36 dBm Note 5
N,RMS
-42 -40 dBm Note 5
N,RMS
-5.8 dBm 5 ns PWD Note 6
R
-8.8 dBm 5 ns PWD Note 6
R
30 Ω 50 MHz Note 4
O
0.8 1.8 2.6 V PR = 0 μW
O
9 15 mA
CC
65 125 MHz -3 dB electrical
E
3.3 6.3 ns PR = -10 dBm
r
3.3 6.3 ns PR = -10 dBm
f
)
100%
100%
Note 5
RMS
= -10 dBm Note 7
R
= -10 dBm Note 8
R
10
Page 11
Figure 1. Recommended power supply lter circuit.
Figure 2. Simpli ed receiver schematic.
Figure 3. Typical pulse width distortion vs. peak input
power.
11
Figure 4. Typical output spectral noise density vs.
frequency.
Figure 5. Typical rise and fall time vs. temperature.
Page 12
Versatile Link Mechanical Dimensions
HORIZONTAL MODULES
HFBR-1527Z
HFBR-2526Z
HORIZONTAL MODULES
HFBR-1537Z
HFBR-2526Z
2.03
(0.080)
0.64
(0.025)
2.77
(0.109)
7.62
(0.300)
18.8
(0.74)
6.86
(0.270)
3.81 (0.150) MAX.
3.56 (0.140) MIN.
0.64 (0.025) DIA.
1.85
(0.073)
7.62
(0.30)
0.51
(0.020)
Versatile Link Printed Circuit Board Layout Dimensions
TOP VIEWS
HORIZONTAL MODULE
7.62
2.54
(0.100)
(0.300)
1.01 (0.040) DIA.
10.16
(0.400)
5.08
(0.200)
4.19
(0.165)
1.27
(0.050)
2.54
(0.100)
VERTICAL MODULE
2.03
(0.080)
10.16
(0.400)
6.86
(0.27)
5.08
(0.200)
18.80
(0.740)
18.29
(0.720)
TOP VIEW
413 2
7.62
(0.300)
58
1.85
(0.073)
PCB EDGE
MIN.
DIMENSIONS IN MILLIMETERS (INCHES).
For product information and a complete list of distributors, please go to our website: www.avagotech.com