40Gbps QSFP+ 40KM ER4 SMF
SLQS-40G-ER4
Features
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Compliant with 40G Ethernet IEEE802.3ba and
40GBASE-ER4 Standard
QSFP+ MSA compliant
Compliant with QDR/DDR Infiniband data rates
Up to 11.2Gb/s data rate per wavelength
4 CWDM lanes MUX/DEMUX design
Up to 40km reach over standard single mode fiber
Operating case temperature 0°C to +70°C
3.5V power supply
RoHS 6 compliant (lead free)
Applications
Overview
 40GBASE-ER4 40G Ethernet links
 Infiniband QDR and DDR interconnects
 Client-side 40G Telecom connections
The SLQS-40G-ER4 is a 4x10G hot pluggable optical
transceiver. The Sourcelight Technology enables the
integration of 4 transmitters, 4 receivers and an
optical MUX/DeMUX into a small form factor
package that delivers a 40Gbps data link in a
compact QSFP footprint.
The optical connectivity is based on two SMF LC
connectors, one for Tx and one for Rx. The Tx and Rx
each consist of 4 10GB/s CWDM channels, whose
wavelengths are in the 1300nm range. The QSFP-ER
transceiver is designed for applications based on the
IEEE 802.3ba 40BASE-ER4 standard of up to 40km
reach.
Ordering Information
Part Number
Product Description
SLQS-40G-ER4
QSFP+ ER4 1270/1290/1310/1330nm 40km on Single mode Fiber (SMF)
1
Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Unit
Supply Voltage
Vcc-Tx/Vcc-Rx/Vcc1
-0.5
3.6
V
Storage Temperature Range
TSTG
-40
+85
ºC
Maximum Average Input Optical Power per
lane (Damage Threshold)
PIN
3.8
Relative Humidity
RH
dBm
0to 85%(non-condensing)
Operating Conditions
Parameter
Symbol
Min
Max
Unit
Supply Voltage
Vcc-Tx/Vcc-Rx/Vcc1
3.1
3.5
V
Operating Case temperature
TCASE
0
70
ºC
Power Consumption
PDISS
3.5
W
SMF Link Length
LKM
40
km
High Speed Electrical Specifications
Parameter
Min
Typical
Max
Units
3.3
3.5
Volts
Supply Current
1.1
Amps
Maximum Power Consumption
3.5
Watts
Maximum Power Consumption – LP Mode
1.5
Watts
General
Supply Voltage
3.1
Signaling Speed Per Channel
10.3125
Gb/s
Signaling Speed Operating Range
±100
ppm
Transmitter
Transmitter Differential Input Impedance
90
Transmitter Differential Input Voltage
0.2
100
110
ohms
1.6
Volts
110
ohms
850
mV
Receiver
Differential Output impedance
90
Differential output voltage
300
100
2
Optical Characteristics
Transmitter Specifications
Parameter
Min
Typical
Max
Unit
Lane Wavelength Range
1264.5
1284.5
1304.5
1324.5
1271
1291
1311
1331
1277.5
1297.5
1317.5
1337.5
nm
Data Rate Per Lane
10.3125
Average Optical power per lane
-3.7
Total Average Launch power
Optical Modulation Amplitude (OMA), each lane
-0.7
Extinction Ratio
5.5
4.5
dBm
10.5
dBm
5
dBm
dB
Difference in launch power between any two lanes
Relative Intensity Noise (RIN)
Launch Power in OMA minus TDP, each lane
Gb/s
7
dB
-128
dB/Hz
-1.5
dBm
Transmitter and dispersion penalty (TDP), each lane
2.6
Side-Mode Suppression Ratio (SMSR)
30
dB
dB
Average Launch Power per lane @ TX off state
-30
dBm
Transmitter Reflectance
-12
dB
Optical return loss tolerance
20
dB
Transmitter Eye Mask definition:
Compliant with 802.3ba standard
{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}
X1, X2, X3, Y1, Y2, Y3
5% mask margin over specified ranges of temperature,
voltage and power supply noise at end of life.
Eye Mask Criteria
Receiver Specifications
Parameter
Min
Typical
Max
Unit
Lane Wavelength Range
1264.5
1284.5
1304.5
1324.5
1271
1291
1311
1331
1277.5
1297.5
1317.5
1337.5
nm
3.8
dBm
-1.5
dBm
Receive Power, each lane (OMA)
-1
dBm
Difference in Receive Power between any two lanes (OMA)
7.0
dB
Receiver Reflectance
-26
dB
Damage Threshold
Average Receive Power, each lane
-20.2
3
Receiver Sensitivity (OMA) per lane (10.3125Gb/s @ PRBS
31
-12
2 -1 and BER=10 )
-18
dBm
Receiver 3 dB electrical upper cutoff frequency, each lane
12.3
GHz
Stressed Receiver Sensitivity OMA), each lane
-15.8
dBm
Conditions of stressed
receiver sensitivity tests
Vertical eye closure penalty, each
lane
2.2
dB
Stressed eye jitter per lane
0.3
UI
-35
dBm
RX_LOS_Assert Min/Max (dBm)
RX_LOS_De-Assert Max( dBm)
-20
RX_LOS_Hysteresis (dBm)
0.5
Functional Block Diagram
Figure1. Functional Block Diagram
Recommended Host Board Power Supply Filtering
Figure2. QSFP voltage supply and filtering scheme
4
dBm
dB
QSFP Edge Connector and Pinout Description
The electrical interface to the transceiver is a 38-pin edge connector. The 38-pins provide high speed data, low
speed monitoring and control signals, I2C communication, power and ground connectivity. The top and bottom
views of the connector are provided below, as well as a table outlining the contact numbering, symbol and full
description.
Figure3. QSFP Edge Connector and Pinout Description
QSFP Transceiver Pinout
Pin
Logic
1
Symbol
Name/Description
Ref.
GND
Ground
1
2
CML-I
Tx2n
Transmitted Inverted Data Input
3
3
CML-I
Tx2p
Transmitted Non-inverted Data Input
3
GND
Ground
1
4
5
CML-I
Tx4n
Transmitted Inverted Data Input
3
6
CML-I
Tx4p
Transmitted Non-inverted Data Input
3
GND
Ground
1
7
8
LVTTL-I
ModSeiL
Module Select
3
9
LVTTL-I
ResetL
Module Reset
3
Vcc Rx
+3.3 VDC Receiver Power Supply
2
10
11
12
LVCMOS-I/O
LVCMOS-I/O
13
SCL
2
3
2
Serial Clock for I C Interface
SDA
Serial Data for I C Interface
3
GND
Ground
1
14
CML-O
RX3p
Receiver Non-inverted Data Output
3
15
CML-O
RX3n
Receiver Inverted Data Output
3
5
16
GND
Ground
1
17
CML-O
RX1p
Receiver Non-inverted Data Output
3
18
CML-O
RX1n
Receiver Inverted Data Output
3
19
GND
Ground
1
20
GND
Ground
1
21
CML-O
RX2n
Receiver Inverted Data Output
3
22
CML-O
RX2p
Receiver Non-inverted Data Output
3
GND
Ground
1
23
24
CML-O
RX4n
Receiver Inverted Data Output
3
25
CML-O
RX4p
Receiver Non-inverted Data Output
3
GND
Ground
1
ModPrsL
Module Present
3
26
27
LVTTL-O
28
LVTTL-O
IntL
Interrupt
3
29
Vcc Tx
+3.3 VDC Transmitter Power Supply
2
30
Vcc1
+3.3 VDC Power Supply
2
LPMode
Low Power Mode
3
GND
Ground
1
31
LVTTL-I
32
33
CML-I
TX3p
Transmitted Non-inverted Data Input
3
34
CML-I
TX3n
Transmitted Inverted Data Input
3
GND
Ground
1
35
36
CML-I
TX1p
Transmitted Non-inverted Data Input
3
37
CML-I
TX1n
Transmitted Inverted Data Input
3
GND
Ground
1
38
6
Mechanical Dimensions
Figure4. Mechanical Specifications
Regulatory Compliance
Requirement
Standard
Electromagnetic Interference (EM)
Compliant to Class B requirements for FCC Part15 and CISPR 22
RF Immunity (RFI)
Compliant to EN/IEC 61000-4-3 and GR-1089-CORE Issue 4
Electrostatic Discharge (ESD)
Compliant to EN/IEC 61000-4-2 and GR-1089-CORE Issue 4
JEDEC JESD22-A114-B (2Kv limit)
Eye Safety
Compliant to Class 1M Laser Device per IEC60825-1
Lead Free Requirement (RoHS)
Compliant to 2002/95/EC RoHS 6/6 Directive
Shenzhen Sourcelight Technology Co., Ltd
Sourcelight Technology reserves the right to make changes to or discontinue any optical link product or service identified in
this document without notice in order to improve design and/or performance. If you have any question regarding this
specification sheet, please contact our sales representative or send email to sales@sourcelight.com.cn
7
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