7
Receiver Electrical Characteristics
(T
C
= 0 °C to +80 °C, V
CC
= 3.3 V ± 5%, Typical T
C
= +40 °C, V
CC
= 3.3 V)
Parameter Symbol Min. Typ. Max. Unit
Reference
(Conditions)
Supply Current I
CCR
400 445 mA 1, Fig. 5
Power Dissipation P
DISR
1.3 1.55 W
Dierential Output Impedance Z
OUT
80 100 120
W
2, Fig. 8, 10
Data Output Dierential
Peak-to-Peak Voltage Swing
DV
DOUTP-P
450 600 750 mV
P-P
3, Figs. 7, 8
Inter-channel Skew 100 150 ps 4
Dierential Data Output Rise/Fall Time t
r
/t
f
110 150 ps 5
Signal Detect
Assert Time (OFF-to-ON)
De-assert Time (ON-to-OFF)
t
SDA
t
SDD
170
190
µs
µs
6
7
Control I/O
LVTTL & LVCMOS
Compatible
Output Voltage Low
Output Voltage High
V
OL
V
OH
V
EE
2.5
3.1 0.4
V
CC
V
V
(I
OL
= 4.0 mA)
(I
OH
= -0.5 mA)
Notes:
1. I
CC
R is the dc supply current, dependent upon the number of active channels, where the Data Outputs are ac coupled with capacitors between
the outputs and any resistive terminations. See Figure 7 for recommended termination.
2. Measured over the range 4 MHz to 2 GHz.
3. DV
DOUTP-P
= DV
DOUTH
DV
DOUTL
, where DV
DOUTH
= High State Dierential Data Output Voltage and DV
DOUTL
= Low State Dierential Data
Output Voltage. DV
DOUTH
and DV
DOUTL
= V
DOUT+
– V
DOUT
, measured with a 100 W dierential load connected with the recommended coupling
capacitors and with a 2500 MBd, 8B10B serial encoded data pattern.
4. Inter-channel Skew is dened for the condition of equal amplitude, zero ps skew input signals. Input power at –10 dBm.
5. Rise and Fall Times are measured between the 20% and 80% levels using a 500 MHz square wave signal.
6. The Signal Detect output will change from logic “0” (Low) to “1” (High) within the specied assert time for a step transition in optical input power
from the de-asserted condition to the specied asserted optical power level on all 12 channels.
7. The Signal Detect output will change from logic “1” (High) to “0” (Low) within the specied de-assert time for a step transition in optical input
power from the specied asserted optical power level to the de-asserted condition on any 1 channel.
8
Optical Characteristics
Transmitter Optical Characteristics
(T
C
= 0 °C to +80 °C, V
CC
= 3.3 V ± 5%, Typical T
C
= +40 °C, V
CC
= 3.3 V)
Parameter Symbol Min. Typ. Max. Unit Reference
Output Optical Power
62.5/125 µm Fiber, NA = 0.2
P
OUT
–8 –4 –2 dBm avg. 1
Output Optical Power – O State P
OUT DIS
–30 dBm avg.
Extinction Ratio Output Power -2 to -8 dBm ER 6 7 dB 2
Center Wavelength l
C
830 850 860 nm
Spectral Width – rms
s
0.4 0.85 nm rms
Rise/Fall Time t
r
/t
f
50 100 ps 3
Inter-channel Skew 110 200 ps 4
Relative Intensity Noise RIN –124 dB/Hz
Jitter Contribution
Deterministic
Total
DJ
TJ
20
60
60
120
ps
p-p
ps
p-p
5
6
Notes:
1. The specied optical output power, measured at the output of a short test cable, will be compliant with IEC 60825-1 Amendment 2, Class 1
Accessible Emission Limits, AEL, and the output power of the module without an attached cable will be compliant with the IEC 60825-1 Amend-
ment 2, Class 1M AEL. See discussion in the Regulatory Compliance section.
2. Extinction Ratio is dened as the ratio of the average output optical power of the transmitter in the high (“1”) state to the low (“0”) state and is
expressed in decibels (dB) by the relationship 10log(Phigh avg/Plow avg). The transmitter is driven with a 550 MBaud, 2
7
-1 PRBS serial encoded
pattern.
3. These are unltered 20-80% value measured with optical-electrical converter with 12 GHz bandwidth. To increase accuracy of measurement
owning to laser overshoot and ringing, a ltered rise/fall time measurement is adopted with a 2.5Gbps (1.875 GHz bandwidth) 4th Bessel
Thompson lter. A max spec of 100 ps for unltered waveform is equivalent to a max spec 215 ps for ltered waveform.
4. Inter-channel Skew is dened for the condition of equal amplitude, zero ps skew input signals.
5. Deterministic Jitter (DJ) is dened as the combination of Duty Cycle Distortion (Pulse-Width Distortion) and Data Dependent Jitter. Deterministic
Jitter is measured at the 50% signal threshold level using a 2.5 GBd Pseudo Random Bit Sequence of length 2
23
– 1 (PRBS), or equivalent, test
pattern with zero skew between the dierential data input signals.
6. Total Jitter (TJ) includes Deterministic Jitter and Random Jitter (RJ). Total Jitter is specied at a BER of 10
-12
for the same 2.5 GBd test pattern as
for DJ.
9
Receiver Optical Characteristics
(T
C
= 0 °C to +80 °C, V
CC
= 3.3 V ± 5%, Typical T
C
= +40 °C, V
CC
= 3.3 V)
Parameter Symbol Min. Typ. Max. Unit Reference
Input Optical Power Sensitivity P
IN MIN
–18.5 -16 dBm avg. 1
Input Optical Power Saturation P
IN MAX
–2 –1 dBm avg. 2
Operating Center Wavelength l
C
830 860 nm
Stressed Receiver Sensitivity –15.5 -11.3 dBm 3
Stressed Receiver Eye Opening 120 190 ps 4
Return Loss 12 19 dB 5
Signal Detect
Asserted
De-asserted
Hysteresis
P
A
P
D
P
A
-P
D
-31
0.5
-19
-21
2
-17 dBm avg.
dBm avg.
dB
6
Notes:
1. Sensitivity is dened as the average input power with the worst case, minimum, Extinction Ratio necessary to produce a BER of 10
-12
at the
center of the Baud interval using a 2.5 GBd Pseudo Random Bit Sequence of length 2
23
– 1 (PRBS), or equivalent, test pattern. For this parameter,
input power is equivalent to that provided by an ideal source, i.e., a source with RIN and switching attributes that do not degrade the sensitivity
measurement. All channels not under test are operating receiving data with an average input power up to 6 dB above P
IN MIN
.
2. Saturation is dened as the average input power that produces at the center of the output swing a receiver output eye width less than 120 ps
where BER < 10
-12
using a 2.5 GBd Pseudo Random Bit Sequence of length 2
23
–1 (PRBS), or equivalent, test pattern.
3. Stressed receiver sensitivity is dened as the average input power necessary to produce a BER < 10
-12
at the center of the Baud interval using a
2.5 GBd Pseudo Random Bit Sequence of length 2
23
– 1 (PRBS), or equivalent, test pattern. For this parameter, input power is conditioned with
2.5 dB Inter-Symbol Interference, ISI, (min), 33 ps Duty Cycle Dependent Deterministic Jitter, DCD DJ (min) and 6 dB ER (ER Penalty = 2.23 dB).
All channels not under test are operating receiving data with an average input power up to 6 dB above P
IN MIN
.
4. Stressed receiver eye opening is dened as the receiver output eye width where BER < 10
-12
at the center of the output swing using a 2.5 GBd
Pseudo Random Bit Sequence of length 2
23
– 1 (PRBS), or equivalent, test pattern. For this parameter, input power is an average input optical
power of –10.7 dBm and conditioned with 2.5 dB ISI (min), 33 ps DCD DJ (min), 6 dB ER (ER Penalty = 2.23 dB). All channels not under test are
operating receiving data with an average input power up to 6 dB above P
IN MIN
.
5. Return loss is dened as the ratio, in dB, of the received optical power to the optical power reected back down the ber.
6. Signal Detect assertion requires all optical inputs to exhibit a minimum 6 dB Extinction Ratio at P
A
= –17 dBm. All channels not under test are
operating with PRBS 23 serial encoded patterns, asynchronous with the channel under test, and an average input power up to 6 dB higher than
P
IN MIN.

HFBR-779BHWZ

Mfr. #:
Manufacturer:
Broadcom / Avago
Description:
Fiber Optic Transmitters, Receivers, Transceivers Tx 2.5G Plgb 62.5um wo HS RoHS
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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