- Home
-
Products
- Applications
- News
-
About Us
About Us
About Us -
Support
-
Contact Us
- Blog
Product type
Contact Information+86 755 89660635 +86 189 2461 3736
40Gbps 850nm QSFP+ SR4 300m Transceiver
XTQM40S8503DC
41.2Gbps 850nm QSFP+ Transceiver
Features
nHot-pluggable QSFP+ footprint
nOperates at 10.3Gbps per channel
n4x10.3Gbps 850nm VCSEL transmitter
n4x10.3Gpbs electrical interface
nMaximum link length of 300m on OM3 MMF
nPower Dissipation <1.5W
nSingle +3.3V power supply
nSingle MPO12 receptacle
nOperating Case temperature range 0°C to 70°C
nRoHS-6 compliant
nCompliant with SFF-8679
nCompliant with SFF-8636
Applications
n40GBASE-SR4
nDate Center
Ordering information
Part No. | Data Rate | Laser | Temp. | Optical Interface | DDMI |
XTQM40S8503DC | 41.2Gbps | VCSEL | 0°C to 70°C | MPO12 | YES |
Description
XTQM40S8503DC transceiver is designed for using in 41.2Gbps data rate over multimode fiber. The transceiver is compliant with SFF-8436, and the mechanical QSFP+ plug is compatible with SFF-8661. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8636.
Absolute Maximum Ratings
Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
Power Supply Voltage | VCC | 0 | --- | 3.6 | V | --- |
Storage Temperature | Ts | -40 | --- | +85 | 。C | --- |
Relative Humidity | RH | 5 | --- | 85 | % | Non-condensing |
Case Operating Temperature | Tc | 0 | --- | +70 | °C | --- |
Electrical Characteristics
Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
Power Supply Voltage | VCC | 3.135 | 3.3 | 3.465 | V | --- |
Power Dissipation | PD | --- | --- | 1.5 | W | --- |
Power Supply Current | Icc | --- | --- | 450 | mA | --- |
Aggregate Data Rate | --- | --- | 41.2 | --- | Gbps | --- |
Signaling rate per lane | --- | --- | 10.3125 | --- | Gbps | --- |
Clock Rate-I2C | --- | --- | --- | 400 | kHz | --- |
Transmitter | ||||||
Input Differential impedance | ZIN | --- | 100 | --- | ohm | --- |
Differential data input swing | VIN | 180 | --- | 900 | mV | --- |
Single-ended voltage tolerance | --- | -0.3 | --- | 3.3 | V | --- |
Receiver | ||||||
Output Differential impedance | Zout | --- | 100 | --- | ohm | --- |
Differential data Output Swing | Vout | 300 | --- | 850 | mV | --- |
Optical Parameters
Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
Power budget | --- | 7.0 | --- | --- | dB | --- |
Aggregate Data Rate | --- | --- | 41.2 | --- | Gbps | --- |
Signaling rate per lane | --- | --- | 10.3125 | --- | Gbps | --- |
Transmitter | ||||||
Center Wavelength | λ | 840 | 850 | 860 | nm | --- |
RMS spectral width | ΔλRMS | --- | --- | 0.65 | nm | --- |
Average Optical Power | PAVG | -5 | --- | 0 | dBm | --- |
Laser Off Power | POFF | --- | --- | -30 | dBm | --- |
Extinction Ratio | ER | 3 | 4 | --- | dB | --- |
Transmitter and dispersion eye closure | TDEC | --- | --- | 3.5 | dB | --- |
Optical Return Loss Tolerance | ORL | --- | --- | 12 | dB | --- |
Receiver | ||||||
Center Wavelength | λ | 840 | 850 | 860 | nm | --- |
Receiver Sensitivity (OMA) | RSENSE1 | --- | --- | -10.5 | dBm | 1 |
Stressed Receiver Sensitivity (OMA) | SRS | --- | --- | -7.5 | dBm | --- |
Maximum Input Power | Pmax | 3.4 | --- | --- | dBm | --- |
Los Assert | LOSA | -30 | --- | --- | dBm | --- |
Los Dessert | LOSD | --- | --- | -12 | dBm | --- |
Los Hysteresis | LOSH | 0.5 | --- | --- | dB | --- |
Receiver Reflectance | RREFL | --- | --- | -12 | dB | --- |
Note1: Sensitivity for 10.3125Gbps PRBS31 and BER better than or equal to E-12.
General Specifications
Parameter | Symbol | Min. | Typical | Max. | Unit | Note | |
Aggregate Data Rate | --- | --- | 41.2 | --- | Gbps | --- | |
Signaling rate per lane | --- | --- | 10.3125 | --- | Gbps | --- | |
Bit Error Ratio | BER | --- | --- | 1E-12 | --- | PRBS31 | |
Maximum Supported Distances | |||||||
Fiber Type | Bandwidth (850nm) | --- | --- | --- | --- | --- | --- |
50um | 500MHz*km | --- | --- | --- | 82 | m | OM2 |
50um | 2000MHz*km | --- | --- | --- | 300 | m | OM3 |
50um | 4700MHz*km | 400 | m | OM4 | |||
Digital Diagnostic Functions
XTQM40S8503DC transceivers can be used in host systems that require either internally or externally calibrated digital diagnostics.
Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
Temperature monitor absolute error | --- | -3 | --- | 3 | 。C | --- |
Laser power monitor absolute error | --- | -3 | --- | 3 | dB | --- |
RX power monitor absolute error | --- | -3 | --- | 3 | dB | --- |
Supply voltage monitor absolute error | --- | -100 | --- | 100 | mV | --- |
Bias current monitor | --- | -10% | --- | 10% | mA | --- |
Pin Assignment:
Pin Descriptions
PIN | Symbol | Name / Description | Note |
1 | GND | Ground | 1 |
2 | Tx2n | Transmitter Inverted Data Input | --- |
3 | Tx2p | Transmitter Non-Inverted Data Input | --- |
4 | GND | Ground | 1 |
5 | Tx4n | Transmitter Inverted Data Input | --- |
6 | Tx4p | Transmitter Non-Inverted Data Input | --- |
7 | GND | Ground | 1 |
8 | ModSelL | Module Select | 2 |
9 | ResetL | Module Reset | --- |
10 | Vcc Rx | 3.3V Power Supply Receiver | --- |
11 | SCL | 2-wire serial interface clock | 3 |
12 | SDA | 2-wire serial interface data | 3 |
13 | GND | Ground | 1 |
14 | Rx3p | Receiver Non-Inverted Data Output | --- |
15 | Rx3n | Receiver Inverted Data Output | --- |
16 | GND | Ground | 1 |
17 | Rx1p | Receiver Non-Inverted Data Output | --- |
18 | Rx1n | Receiver Inverted Data Output | --- |
19 | GND | Ground | 1 |
20 | GND | Ground | 1 |
21 | Rx2n | Receiver Inverted Data Output | --- |
22 | Rx2p | Receiver Non-Inverted Data Output | --- |
23 | GND | Ground | 1 |
24 | Rx4n | Receiver Inverted Data Output | --- |
25 | Rx4p | Receiver Non-Inverted Data Output | --- |
26 | GND | Ground | 1 |
27 | ModPrsL | Module Present | 3 |
28 | IntL | Interrupt | 3 |
29 | Vcc Tx | 3.3V power supply transmitter | --- |
30 | Vcc1 | 3.3V power supply | --- |
31 | LPMode | Low Power Mode | --- |
32 | GND | Ground | 1 |
33 | Tx3p | Transmitter Non-Inverted Data Input | --- |
34 | Tx3n | Transmitter Inverted Data Input | --- |
35 | GND | Ground | 1 |
36 | Tx1p | Transmitter Non-Inverted Data Input | --- |
37 | Tx1n | Transmitter Inverted Data Input | --- |
38 | GND | Ground | 1 |
Note1: Module ground pins GND are isolated from the module case.
Note2: ModSelL is an input signal. When held low by the host, the module responds to two-wire serial
communication commands. The ModSelL signal allows the use of multiple modules on a single two-wire interface. When ModSelL is high, the module shall not respond to or acknowledge any two-wire interface communication from the host.
Note3: Shall be pulled up with 4.7K-10Kohms to a voltage between 3.15V and 3.45V on the host board.
Mechanical Dimensions
Unit: mm
Revision History
Revision | Initiated | Reviewed | Approved | DCN | Release Date |
V1.0 | Feynman | --- | Ethan Li | Released. | May 16, 2022 |
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by Zkosemi before they become applicable to any particular order or contract. In accordance with the Zkosemi policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of Zkosemi or others. Further details are available from any Zkosemi sales representative.