HFBR-5527 [HP]
125 Megabaud Fiber Optic Transceiver JIS FO7 Connection; 125兆波特光纤收发器JIS FO7连接
| 型号： | HFBR-5527 |
| 厂家： | 
HEWLETT-PACKARD |
| 描述： | 125 Megabaud Fiber Optic Transceiver JIS FO7 Connection |
| 文件： | 总12页 (文件大小：374K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical Data
The 125 MBd transceiver is a
cost-effective fiber-optic solution
for transmission of 125 MBd data
up to 100 meters with HCS®
fiber. The data link consists of a
650 nm visible, red LED trans-
mitter and a PIN/preamp receiver.
These can be used with low-cost
plastic or hard clad silica fiber.
One millimeter diameter plastic
fiber provides the lowest cost
solution for distances under 25
meters. The lower attenuation of
HCS® fiber allows data transmis-
sion over longer distance. These
components can be used for high
speed data links without the
problems common with copper
wire solutions.
With the recommended drive
circuit, the LED operates at
speeds from 1-125 MBd. The
analog high bandwidth receiver
contains a PIN photodiode and
internal transimpedance
amplifier. With the recommended
application circuit for 125 MBd
operation, the performance of the
complete data link is specified for
0-25 meters with plastic fiber. A
wide variety of other digitizing
circuits can be combined with the
HFBR-5527 Series to optimize
performance and cost at higher or
lower data rates.
The transmitter is a high power
650 nm LED. Both transmitter
and receiver are molded in one
housing which is compatible with
the FO7 connector. This con-
nector is designed to efficiently
couple the power into POF or
HCS® fiber.
HCS® is a registered trademark of Spectran Corporation.
165
5965-7092E (5/97)
the recommended applications
circuits shown in Figure 1. This
circuit has been optimized for
125 MBd operation. The
Applications Engineering
Department in the Hewlett-
Packard Optical Communication
Division is available to assist in
optimizing link performance for
higher or lower speed operation.
Data link operating conditions
and performance are specified for
the transmitter and receiver in
Ambient Temperature
Supply Voltage
Data Input Voltage - Low
Data Input Voltage - High
Data Output Load
Signaling Rate
TA
VCC
VIL
VIH
RL
0
+4.75
VCC –1.89
VCC –1.06
45
70
+5.25
VCC –1.62
VCC –0.70
55
°C
V
V
V
Ω
1
2
fS
D.C.
1
40
125
60
MBd
%
Duty Cycle
: 1-125 MBd, BER ≤ 10-9, under recommended operating conditions with
recommended transmit and receive application circuits.
Optical Power Budget, 1 m POF
Optical Power Margin,
20 m Standard POF
OPBPOF
OPMPOF,20
11
3
16
6
dB
dB
5, 6, 7
5, 6, 7
Link Distance with
Standard 1 mm POF
Optical Power Margin,
25 m Low Loss POF
Link Distance with Extra
Low Loss 1 mm POF
1
OPMPOF,25
1
20
3
27
6
m
dB
m
5, 6, 7
25
32
Optical Power Budget, 1 m HCS
Optical Power Margin, 100 m HCS OPMHCS,100
Link Distance with HCS cable
OPBHCS
12
6
125
dB
dB
m
5, 6, 7
5, 6, 7
1
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 V.
CC
2. Run length limited code with maximum run length of 10 µs.
3. Minimum link performance is projected based on the worst case specifications of the transmitter, 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-RXXYYY plastic optical fiber, with a maximum attenuation of 0.24 dB/m at 650 nm and NA = 0.5.
Extra low loss cable is HFBR-EXXYYY plastic optical fiber, with a maximum attenuation of 0.19 dB/m at 650 nm and NA = 0.5.
HCS cable is HFBR-H/VXXYYY glass optical fiber, with a maximum attenuation of 10 dB/km at 650 nm and NA = 0.37.
6. Optical Power Budget is the difference between the transmitter output power and the receiver sensitivity, measured after
1 meter of fiber. 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 effects 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 long term LED LOP degradation and additional fixed passive losses (such as in-line connectors) in addition to the
minimum specified distance.
166
Performance of the transmitter in the recommended application circuit (Figure 1) for POF; 1-125 MBd, 25°C.
Average Optical Power 1 mm POF
Pavg
-9.7
dBm
50% Duty
Cycle
Note 1, Fig. 3
Note 2, Fig. 3
Average Modulated Power 1 mm POF
Optical Rise Time (10% to 90%)
Optical Fall Time (90% to 10%)
High Level LED Current (On)
Low Level LED Current (Off)
Optical Overshoot - 1 mm POF
Pmod
tr
-11.3
2.1
2.8
30
dBm
ns
5 MHz
5 MHz
tf
ns
IF,H
IF,L
mA
mA
%
Note 3
Note 3
3
45
Transmitter Application Circuit
ICC
115
mA
Figure 1
Current Consumption - 1 mm POF
µ
Performance of
the transmitter in the recommended application circuit (Figure 1) for HCS; 1-125 MBd, 25°C.
Average Optical Power 200 µm HCS
Pavg
-14.6
dBm
50% Duty
Cycle
Note 1, Fig. 3
Note 2, Fig. 3
Average Modulated Power 200 µm HCS
Optical Rise Time (10% to 90%)
Optical Fall Time (90% to 10%)
High Level LED Current (On)
Low Level LED Current (Off)
Pmod
tr
-16.2
3.1
3.4
60
dBm
ns
5 MHz
5 MHz
tf
ns
IF,H
IF,L
mA
mA
%
Note 3
Note 3
6
Optical Overshoot - 200 µm HCS
30
Transmitter Application Circuit
ICC
130
mA
Figure 1
Current Consumption - 200 µm HCS
1. Average optical power is measured with an average power meter at 50% duty cycle, after 1 meter of fiber.
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 difference 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 defined as one half the slope of the average power versus duty cycle:
[Pavg @ 80% duty cycle - Pavg @ 20% duty cycle]
Average Modulated Power = ––——————————————————————
(2) [0.80 - 0.20]
3. High and low level LED currents refer to the current through the LED. The low level LED “off” current, sometimes referred to as
“hold-on” current, is prebias supplied to the LED during the off state to facilitate fast switching speeds.
167
Performance[4] of the receiver in the recommended application circuit (Figure 1); 1-125 MBd, 25°C unless
otherwise stated.
Data Output Voltage - Low
Data Output Voltage - High
VOL
VOH
Pmin
VCC -1.7
VCC -0.9
-27.5
V
V
RL = 50 Ω
RL = 50 Ω
Note 5
Note 5
Note 2
Receiver Sensitivity to Average
dBm
50% eye opening
Modulated Optical Power 1 mm POF
Receiver Sensitivity to Average
Modulated Optical Power 200 µm HCS
Pmin
Pmax
Pmax
ICC
-28.5
-7.5
-10.5
85
dBm
dBm
dBm
mA
50% eye opening
50% eye opening
50% eye opening
RL = ∞
Note 2
Note 2
Receiver Overdrive Level of Average
Modulated Optical Power 1 mm POF
Receiver Overdrive Level of Average
Modulated Optical Power 200 µm HCS
Note 2
Receiver Application Circuit Current
Consumption
Figure 1
4. Performance in response to a signal from the transmitter driven with the recommended circuit at 1-125 MBd over 1 meter of plastic
optical fiber or 1 meter of HCS® fiber with F07 plugs.
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.
L1
CB70-1812
V
CC
9
+
C3
0.1
C2
0.1
C4
0.001
C5
10
C6
0.1
C7
0.001
C1
0.001
14
R5
22
8
10
U1C
74ACTQ00
7
R8*
R9*
UNLESS OTHERWISE NOTED,
ALL CAPACITOR VALUES
ARE IN µF WITH ± 10%
12
13
Q1
Q2
11
U1D
Q3
2N3904
MPS536L MPS536L
1
2
3
U1A
74ACTQ00
TOLERANCE AND ALL
RESISTOR VALUES ARE IN
Ω WITH ± 5% TOLERANCE.
74ACTQ00
R6
91
R7
91
4
5
6
U1B
T
V
EE
X
R10
15
9
8
7
6
5
4
3
2
J1 1
C8*
74ACTQ00
Q2 BASE
Q1 BASE
T
R11*
V
X
X
CC
R
V
CC
+
C20
10
C19
0.1
NC
R12
4.7
PIN 19 10H116
PIN 18 10H116
R
C10
0.1
C9
47
10
V
CC
V
1
V
BB
X
EE
RX OUT
RX GND
RX GND
U22
3V
2
3
4
5
6
7
8
C17
0.1
R22
1K
V
BB
R13
4.7
RX V
R24
1K
CC
R18
51
R16
51
GND
R14
1K
GND
C16
0.1
MC10H116FN
MC10H116FN
MC10H116FN
ANODE
CATHODE
C12
0.1
10
4
14
9
18
19
15
17
7
5
13
12
U4C
U4A
U4B
3
8
9
C11
0.1
C15
0.1
R19
51
R17
51
R15
1K
20
2
R25
1K
3 V
R23
1K
V
CC
R20
12
THE VALUES OF R8, R9, R11, AND
C8 ARE DIFFERENT FOR POF AND
HCS DRIVE CIRCUITS.
V
BB
V
BB
POF
180
180
820
HCS TOLERANCE
+
C14
10
R21
62
R8
R9
R11
C8
82
82
1%
1%
1%
5%
C13
0.1
C18
0.1
U5
470
62 pF 120 pF
TL431
RX GND
168
120 Ω
120 Ω
+5 V ECL
SERIAL DATA
SOURCE
82 Ω
9
8
7
T
V
V
X
EE
CC
0.1 µF
82 Ω
TD
TD
+
–
5 V
4.7 µH
0.1 µF
+
6
5
T
X
10 µF
0.1 µF
R
V
CC
X
10 µF
0.1 µF
82 Ω
82 Ω
4
3
2
1
+
4.7 µH
FIBER-OPTIC
TRANSCEIVER
SHOWN IN
RD
RD
+5 V ECL
SERIAL DATA
RECEIVER
FIGURE 1
R
V
EE
X
120 Ω
120 Ω
4.7 µH
21
200
150
POF
19
17
15
13
11
9
100
AVERAGE
MODULATED
POWER
HCS
50
0
AVERAGE POWER,
50% DUTY CYCLE
0
20
40
60
80
100
10 30
50
70
90
110 130 150
DUTY CYCLE – %
DATA RATE – MBd
169
CASE
GND
10
RX OUT
RX GND
RX GND
1
2
3
4
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 fiber.
The HFBR-5527 incorporates a
650 nm LED, a PIN photodiode,
and transimpedance preamplifier.
The 650 nm LED is suitable for
use with current peaking to
decrease optical response time
and can be used with the PIN
preamplifier to build an optical
transceiver that can be operated
at signaling rates from 1 to 125
MBd over POF or HCS® fiber. The
RX V
CC
GND
GND
5
6
7
8
ANODE
CATHODE
9
CASE
GND
Storage Temperature
TS
-40
-40
+85
°C
Operating Temperature
TO
+70
260
10
°C
°C
s
Lead Soldering Temperature
Cycle Time
Note 1
Transmitter High Level Forward
Input Current
IF,H
120
mA
50% Duty Cycle
≥ 1 MHz
Transmitter Average Forward Input Current
Transmitter Reverse Input Voltage
Receiver Signal Pin Voltage
IF,AV
VR
60
3
mA
V
VO
-0.5
-0.5
VCC
6.0
25
V
Receiver Supply Voltage
VCC
IO
V
Receiver Output Current
mA
CAUTION: The small junction sizes inherent to the design of this component increase the component's suscepti-
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.
170
0 to 70°C, unless otherwise stated.
Transmitter Output Optical
Power, 1 mm POF
PT
PT
-9.5
-10.4
-7.0
-13.0
-0.02
-4.8
-4.3
dBm
dBm
IF,dc = 30 mA, 25°C Note 3
0-70°C
Transmitter Output Optical
-10.5
-10.0
IF,dc = 60 mA, 25°C Note 3
0-70°C
Power, 200 µm HCS®
Output Optical Power
Temperature Coefficient
∆PT
∆T
dB/°C
Peak Emission Wavelength
λPK
640
1.8
650
660
2.4
nm
Peak Wavelength
Temperature Coefficient
∆λ
∆T
0.12
nm/°C
Spectral Width
FWHM
21
nm
Full Width,
Half Maximum
Forward Voltage
VF
2.0
V
IF = 60 mA
Forward Voltage
Temperature Coefficient
∆VF
∆T
-1.8
mV/°C
Transmitter Numerical
Aperture
NA
θjc
VBR
CO
tr
0.5
140
13
60
12
9
Thermal Resistance,
Junction to Case
°C/W
V
Note 4
Reverse Input Breakdown
Voltage
3.0
IF,dc = -10 µA
Diode Capacitance
pF
ns
VF = 0 V,
f = 1 MHz
Unpeaked Optical Rise
Time, 10% - 90%
IF = 60 mA
f = 100 kHz
Figure 5
Note 5
Unpeaked Optical Fall
Time, 90% - 10%
tf
ns
IF = 60 mA
f = 100 kHz
Figure 5
Note 5
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 fiber with a large
area detector.
4. Typical value measured from junction to PC board solder joint.
5. Optical rise and fall times can be reduced with the appropriate driver circuit.
6. Pins 9 and 10 are primarily for mounting and retaining purposes, but are electrically connected with conductive housing; pins 5 and 6
are electrically unconnected. It is recommended that pins 5, 6, 9, and 10 all be connected to Rx 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 fiber and 200 µm HCS fiber.
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.
171
1.2
1.0
0.8
0° C
25° C
HP8082A
PULSE
GENERATOR
70° C
BCP MODEL 300
500 MHz
BANDWIDTH
SILICON
AVALANCHE
PHOTODIODE
0.6
0.4
0.2
0
HP54002A
50 OHM BNC
INPUT POD
50 OHM
LOAD
RESISTOR
HP54100A
OSCILLOSCOPE
620
630
640
650
660
670
680
WAVELENGTH (nm)
°
2.4
2.2
2.0
1.8
+5
0
0° C
25° C
70° C
-5
-10
-15
-20
25° C
1.6
1
10
100
1
10
50
100
I
– TRANSMITTER DRIVE CURRENT (mA)
I
F,DC
– TRANSMITTER DRIVE CURRENT (mA)
F,DC
172
0 to 70°C; 5.25 V ≥ VCC ≥ 4.75 V; power supply must be filtered
(see Figure 1, Note 2).
AC Responsivity 1 mm POF
AC Responsivity 200 µm HCS
RMS Output Noise
RP,POF
RP,HCS
VNO
1.7
4.5
3.9
7.9
6.5
mV/µW
650 nm
Note 4
11.5 mV/µW
0.46 0.69
mVRMS
dBm
Note 5
Note 5
Equivalent Optical Noise Input
Power, RMS - 1 mm POF
PN,RMS
-39
-36
Equivalent Optical Noise Input
Power, RMS - 200 µm HCS
PN,RMS
PR
-42
-40
dBm
Note 5
Note 6
Note 6
Note 4
Peak Input Optical Power -
1 mm POF
-5.8
-6.4
dBm
dBm
5 ns PWD
2 ns PWD
Peak Input Optical Power -
200 µm HCS
PR
-8.8
-9.4
dBm
dBm
5 ns PWD
2 ns PWD
Output Impedance
ZO
VO
30
1.8
9
Ω
V
50 MHz
DC Output Voltage
0.8
65
2.6
15
PR = 0 µW
Supply Current
ICC
mA
MHz
Hz * s
ns
Electrical Bandwidth
Bandwidth * Rise Time
Electrical Rise Time, 10-90%
BWE
125
0.41
3.3
-3 dB electrical
tr
tf
6.3
6.3
1.0
PR = -10 dBm
peak
Electrical Fall Time, 90-10%
Pulse Width Distortion
Overshoot
3.3
0.4
4
ns
ns
%
PR = -10 dBm
peak
PWD
PR = -10 dBm
peak
Note 7
Note 8
PR = -10 dBm
peak
1. 1.6 mm below seating plane.
2. The signal output is an emitter follower, which does not reject noise in the power supply. The power supply must be filtered as in
Figure 9.
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 filter with a 75 MHz, -3 dB bandwidth. No modulation appled to Tx.
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. PR,Max 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 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 defined at:
(V - V100%
)
–––P–K–––––––– × 100%
V100%
9. Pins 9 and 10 are primarily for mounting and retaining purposes, but are electrically connected with the conductive housing. Pins 5
and 6 are electrically unconnected. It is recommended that pins 5 and 6 be connected to Rx ground to reduce coupling of electrical
noise. Refer to Figure 1. The connections between pins 1 and 2 of the HFBR-5527 and pins 13 and 12 of the MC10H116 should be
adjacent and nearly the same length to maximize the common mode rejection of the MC10H116 to eliminate cross talk between the
transmitter and receiver.
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.
173
V
CC
4.7 Ω
0.1 µF
0.47 µF
4.7 Ω
4
RECEIVER
RX
ANALOG
OUTPUT
1
9
10
2.3
The HFBR-5527 is typically used
to construct 125 MBd digital
fiber-optic receivers which use
the same +5 volt power supply
that powers the host system’s
microprocessors, CMOS logic, or
TTL logic. To build a digital
receiver, the analog HFBR-5527
component must be connected to
a post amplifier and a compara-
tor. This post amplifier plus
comparator function is commonly
known as a quantizer. The 0 V
common and +5 V power supply
connections for the HFBR-5527
and quantizer must be isolated
from the host system’s power and
ground planes by a low pass
filter assures that the electrical
noise normally present in the
host system’s digital logic power
supply will not reduce the
sensitivity of fiber-optic receivers
implemented with the
HFBR-5527. The quantizer and
power supply filter circuits
recommended for use with the
HFBR-5527 are shown in
Figure 7 of HP Application
Note 1066. For optimum
performance, the HFBR-5527
should be used with the same
quantizer and power supply
filters recommended for use with
HP’s HFBR-15X7 and
noise, pins 3, 9, and 10 of the
HFBR-5527 should be connected
to filtered receiver common. For
best common mode noise
rejection, the connections
between pins 1 and 2 of the
HFBR-5527 and the quantizer’s
differential input should be of
equal length, and the components
in both traces should be placed to
achieve symmetry. The preceding
recommendations minimize the
cross talk between the fiber-optic
transmitter and receiver. These
recommendations also improve
the fiber-optic receiver’s
immunity to environmental noise
and the host system’s electrical
noise.
HFBR-25X6 components. To
maximize immunity to electrical
filter. This recommended low pass
174
4
POSITIVE
SUPPLY
BIAS & FILTER
CIRCUITS
900 pF
RX
ANALOG
OUTPUT
1
5.0
mA
2.3
GROUND
175
16
22
10.16
8.5
4.4
3.5
0.3
2.54
2.11
4.39
1
5.85
5.76
20
ALL DIMENSIONS IN MILLIMETERS (INCHES).
ALL DIMENSIONS ± 0.25 mm
UNLESS OTHERWISE SPECIFIED.
0.51
0.64
20.3
1.11
2.54 (0.100)
1.01 (0.040) DIA.
8
7
6
5
4
3
2
1
4.39
9
10
TOP VIEW
ELECTRICAL PIN FUNCTIONS
PIN NO.
CAUTION:
THIS PACKAGE IS MADE
OF CONDUCTIVE PLASTIC.
PLEASE TAKE THIS INTO
ACCOUNT WHEN
INCORPORATING THIS
PACKAGE INTO INTRINSICALLY
SAFE APPLICATIONS.
1
2
RX OUT
RX GND
RX GND
3
4
RX V
CC
5
TX GND*
TX GND*
6
NOTE:
7
ANODE
DIMENSIONS IN MILLIMETERS
AND (INCHES).
8
CATHODE
CASE GND
CASE GND
9
10
*NO INTERNAL CONNECTION
176
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