PRE-SFP-B34-40
1.25Gb/s Bi-Di Transceiver, 1310/1490nm Tx/Rx, 40km, DDM
Product Features

Single-mode Bi-directional transmission at 1310nm,
used as a pair with PRE-SFP-B43-40

1.25Gb/s Data Links up to 40 km on 9/125 µm SMF

MSA Package with Built-in WDM and LC receptacle

Hot-Pluggable

Single +3.3V Power Supply

Metal Enclosure, Excellent EMI ESD Protection

Isolation > 30 dB, Cross Talk < -45dB

Industrial (-40°C to 85°C), Extended (-5°C to 85°C) or
Commercial (0°C to 70°C ) operating temperature
Compliance
Applications

SFF-8472 Compliant Monitoring Interface

IEEE Std. 802.3z

RoHS compliant

Class 1 Laser Safety per EN (IEC) 60825 regulations

Gigabit Ethernet

Fibre Channel

WDM Applications
Description
Precision Optical Transceivers PRE-SFP-B34-40 is a high performance, cost effective Bi-directional transceiver
with a single LC optical interface and a built-in WDM for data communication applications. PRE-SFP-B34-40
operates at 1310 nm (Tx) and 1490 nm (Rx) nominal wavelengths and includes a standard AC coupled CML for
high speed signal and LVTTL control and monitor signals. The DFB laser transmitter and IC driver with
temperature compensation and automatic power control circuit makes the transmitter output power and extinction
ration stable across the operating temperature range. The Receiver consists of an InGaAs photodiode and
transimpedance with AGC for wide dynamic rage. A 21dB link budget ensures 1000Base Ethernet transmission up
to 40 km.
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Relative Humidity
Symbol
Min.
TS
Max.
Unit
-40
+85
°C
VCCT, R
-0.5
4
V
RH
0
85
%
-40
85
-5
85
0
70
Industrial
Case Operating
Temperature
Extended
Commercial
Top
Typical
⁰C
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
1
PRE-SFP-B34-40
1.25Gb/s Bi-Di Transceiver, 1310/1490nm Tx/Rx, 40km, DDM
Recommended Operating Environment
Parameter
Symbol
Min.
Typical
Max.
Unit
0
+70
°C
3.0
3.6
V
Industrial
Case operating Temperature
Extended
TC
Commercial
Supply Voltage
VCCT, R
Power Supply Rejection
100
mVP-P
Electrical Characteristics (TOP = 0 to 70 °C, VCC = 3.0 to 3.60 Volts)
Parameter
Symbol
Min.
Typical
Max.
Unit
Supply Voltage
Vcc
3.0
3.30
3.60
V
Supply Current
Icc
160
280
mA
Inrush Current
Isurge
Icc+30
mA
Maximum Power
Pmax
1.0
W
110
Ω
Note
Transmitter Section:
Input differential impedance
Rin
90
Vin PP
200
1200
mVp-p
Transmit Disable Voltage
VD
Vcc – 1.3
Vcc
V
Transmit Enable Voltage
VEN
Vee
Vee+ 0.8
V
10
µs
1000
mV
3
Single ended data input swing
Transmit Disable Assert Time
Receiver Section:
Single ended data output swing
Tdessert
Vout,pp
300
100
1
2
Data output rise time
tr
150
ps
4
Data output fall time
tf
150
ps
4
LOS Fault
Vlosfault
Vcc – 0.5
VCC_host
V
5
LOS Normal
Vlos norm
Vee
Vee+0.5
V
5
PSR
100
mVpp
6
51.7
ps
7
122.4
ps
Power Supply Rejection
Deterministic Jitter Contribution
Total Jitter Contribution
Notes:
RXΔDJ
RXΔTJ
1. AC coupled
2. Or open circuit 3. Into 100 Ohm differential termination
4. 20 – 80 %
5. LOS is LVTTL. Logic 0 = normal operation; logic 1 = no signal detected
6. All transceiver specifications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5MHz up to specified value
applied through the power supply filtering network shown on page 23 of the Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA), September 14, 2000.
7. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ and ΔDJ.
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
2
PRE-SFP-B34-40
1.25Gb/s Bi-Di Transceiver, 1310/1490nm Tx/Rx, 40km, DDM
Optical Parameters (TOP = 0 to 70 °C, VCC = 3.00 to 3.60 Volts)
Parameter
Symbol
Min.
Typical
Max.
Unit
Note
λc
1270
1310
σ
Pout
nm
nm
1
Spectral Width(-20dB)
Optical Output Power
1360
1
-2
+3
dBm
2
Optical Rise/Fall Time
tr / tf
160
ps
3
Extinction Ratio
ER
Transmitter Section:
Center Wavelength
Deterministic Jitter Contribution
Total Jitter Contribution
Eye Mask for Optical Output
Relative Intensity Noise
9
dB
TXΔDJ
TXΔTJ
56.5
119
ps
ps
4
Compliant with Eye Mask Defined in IEEE 802.3 standard
RIN
-120
dB/Hz
Receiver Section:
Optical Input Wavelength
Optical Input Power
λ
1420
Pin
-23
Receiver Reflectance
Receiver Overload
RX Sensitivity
1490
1550
nm
-3
dBm
12
5.6
dB
Pol
-3
dBm
5.6
Sen
-23
dBm
5.6
RX_LOS Assert
LOS A
RX_LOS Deassert
LOS D
RX_LOS Hysteresis
LOS H
-34
dBm
2
-24
dBm
2.5
dB
1250
Mb/s
General Specifications
BR
Data Rate
Bit Error Rate
Max. Supported Link Length on
9/125μm SMF@1.25G
Total System Budget
1062
BER
10-12
LMAX
40
LB
21
km
7
dB
8
Notes:
1. Also specified to meet curves in FC-PI 13.0 Figures 18 and 19, which allow trade-off between wavelength spectral width.
2. Class 1 Laser Safety per FDA/CDRH and EN (IEC) 60825 regulations.
3. Unfiltered, 20-80%. Complies with IEEE 802.3 (Gig. E), FC 1x and 2x eye masks when filtered.
4. Measured with DJ-free data input signal. In actual application, output DJ will be the sum of input DJ and ΔDJ.
5. Measured with conformance signals defined in FC-PI 13.0 specifications.
6. Measured with PRBS 27-1 at 10-12 BER
7. Dispersion limited per FC-PI Rev. 13
8. Attenuation of 0.45 dB/km is used for the link length calculations. Distances are indicative only. Please refer to the Optical Specifications in
Table IV to calculate a more accurate link budget based on specific conditions in your application.
Precision Optical Transceivers, Inc.
PrecisionOT.com
sales@PrecisionOT.com
Tel. 585-500-4090
3