Description
Description
The 100GE QSFP28 to 4x 25GE SFP28 Passive cable assemblies are high performance,cost effective for SFP28 and QSFP28 equipment interconnects . The Hybrid cables are compliant with SFF-8402 and SFF-8665 specifications. It is offer a low power consumption,short reach interconnect applications. The cable each lane is capable of transmitting data at rates up to 25Gb/s, providing an aggregated rate of 100Gb/s
Features
- Supporting 100 Gbps to 4 x 25 Gbps
- Support data rates : 25.78Gb/s (per channel)
- IEEE 802.3bj 100GEBASE-CR4 and P802.3by compliant
- Compatible to SFP28 MSA and QSFP28 MSA
- Compatible to SFF-8402, SFF-8432 and SFF8665
- Maximum aggregate data rate: 100 Gb/s (4 x 25Gb/s)
- High-Density QSFP28 38-PIN and 4x SFP28 20-PIN Connector
- Temperature Range: 0~ 70 °C
- Copper link length up to 3m
- Power Supply :+3.3V
- Low crosstalk
- I2C based two-wire serial interface for EEPROM signature which can be customized
- Operating Temperature: 0~ 70 °C
- ROHS Compliant
Specification
Recommended Operating Conditions
|
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
| Storage Ambient Temperature |
-40 |
+85 |
°C |
||
| Operating Case Temperature |
Tc |
0 |
+70 |
°C |
|
| Power Supply Voltage |
VCC3 |
3.14 |
3.3 |
3.47 |
V |
High Speed Characteristics
|
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Note |
|
Differential Impedance |
RIN,P-P |
90 |
110 |
Ώ |
||
|
Insertion loss |
SDD21 |
22.48 |
dB |
At 12.8906 GHz |
||
|
Differential Return Loss |
SDD11 |
See 1 |
dB |
At 0.05 to 4.1 GHz |
||
|
SDD22 |
See 2 |
dB |
At 4.1 to 19 GHz |
|||
|
Common-mode to common-mode output return loss |
SCC11 |
2 |
dB |
At 0.2 to 19 GHz |
||
|
SCC22 |
||||||
|
Differential to common-mode return loss |
SCD11 |
See 3 |
dB |
At 0.01 to 12.89 GHz |
||
|
SCD22 |
See 4 |
At 12.89 to 19 GHz |
||||
|
Differential to common Mode Conversion Loss |
SCD21 |
10 |
dB |
At 0.01 to 12.89 GHz |
||
|
See 5 |
At 12.89 to 15.7 GHz |
|||||
|
6.3 |
At 15.7 to 19 GHz |
|||||
|
Channel Operating Margin |
COM |
3 |
dB |
Notes:
1. Reflection Coefficient given by equation SDD11(dB) < 16.5 – 2 × SQRT(f ), with f in GHz
2. Reflection Coefficient given by equation SDD11(dB) < 10.66 – 14 × log10(f/5.5), with f in GHz
3. Reflection Coefficient given by equation SCD11(dB) < 22 – (20/25.78)*f, with f in GHz
4. Reflection Coefficient given by equation SCD11(dB) < 15 – (6/25.78)*f, with f in GHz
5. Reflection Coefficient given by equation SCD21(dB) < 27 – (29/22)*f, with f in GHz
QSFP28 Pin Descriptions
|
Pin |
Logic |
Symbol |
Name/Description |
Notes |
|
1 |
GND |
Ground |
1 |
|
|
2 |
CML-I |
Tx2n |
Transmitter Inverted Data Input |
|
|
3 |
CML-I |
Tx2p |
Transmitter Non-Inverted Data Input |
|
|
4 |
GND |
Ground |
1 |
|
|
5 |
CML-I |
Tx4n |
Transmitter Inverted Data Input |
|
|
6 |
CML-I |
Tx4p |
Transmitter Non-Inverted Data Input |
|
|
7 |
GND |
Ground |
1 |
|
|
8 |
LVTTL-I |
ModSelL |
Module Select |
|
|
9 |
LVTTL-I |
ResetL |
Module Reset |
|
|
10 |
Vcc Rx |
+3.3V Power Supply Receiver |
2 |
|
|
11 |
LVCMOSI/O |
SCL |
2-wire serial interface clock |
|
|
12 |
LVCMOSI/O |
SDA |
2-wire serial interface data |
|
|
13 |
GND |
Ground |
1 |
|
|
14 |
CML-O |
Rx3p |
Receiver Non-Inverted Data Output |
|
|
15 |
CML-O |
Rx3n |
Receiver Inverted Data Output |
|
|
16 |
GND |
Ground |
1 |
|
|
17 |
CML-O |
Rx1p |
Receiver Non-Inverted Data Output |
|
|
18 |
CML-O |
Rx1n |
Receiver Inverted Data Output |
|
|
19 |
GND |
Ground |
1 |
|
|
20 |
GND |
Ground |
1 |
|
|
21 |
CML-O |
Rx2n |
Receiver Inverted Data Output |
|
|
22 |
CML-O |
Rx2p |
Receiver Non-Inverted Data Output |
|
|
23 |
GND |
Ground |
1 |
|
|
24 |
CML-O |
Rx4n |
Receiver Inverted Data Output |
|
|
25 |
CML-O |
Rx4p |
Receiver Non-Inverted Data Output |
|
|
26 |
GND |
Ground |
1 |
|
|
27 |
LVTTL-O |
ModPrsL |
Module Present |
|
|
28 |
LVTTL-O |
IntL |
Interrupt |
|
|
29 |
Vcc Tx |
+3.3V Power supply transmitter |
2 |
|
|
30 |
Vcc1 |
+3.3V Power supply |
2 |
|
|
31 |
LVTTL-I |
LPMode |
Low Power Mode |
|
|
32 |
GND |
Ground |
1 |
|
|
33 |
CML-I |
Tx3p |
Transmitter Non-Inverted Data Input |
|
|
34 |
CML-I |
Tx3n |
Transmitter Inverted Data Input |
|
|
35 |
GND |
Ground |
1 |
|
|
36 |
CML-I |
Tx1p |
Transmitter Non-Inverted Data Input |
|
|
37 |
CML-I |
Tx1n |
Transmitter Inverted Data Input |
|
|
38 |
GND |
Ground |
1 |
Note 1: GND is the symbol for signal and supply (power) common for the QSFP28 module. All are common within the QSFP28 module and all module voltages are referenced to this potential unless otherwise noted. Connect these directly to the host board signal-common ground plane.
Note 2: Vcc Rx, Vcc1 and Vcc Tx are the receiver and transmitter power supplies and shall be applied concurrent- ly. Requirements defined for the host side of the Host Edge Card Connector are listed in Table 6. Recommended host board power supply filtering is shown in Figure 4. Vcc Rx Vcc1 and Vcc Tx may be internally connected with- in the QSFP28 Module module in any combination. The connector pins are each rated for a maximum current of 500 mA.
SFP28 Pin Descriptions
|
Pin |
Logic |
Symbol |
Name/Description |
Notes |
|
1 |
VeeT |
Transmitter Ground |
||
|
2 |
LV-TTL-O |
TX_Fault |
N/A |
1 |
|
3 |
LV-TTL-I |
TX_DIS |
Transmitter Disable |
2 |
|
4 |
LV-TTL-I/O |
SDA |
Tow Wire Serial Data |
|
|
5 |
LV-TTL-I |
SCL |
Tow Wire Serial Clock |
|
|
6 |
MOD_DEF0 |
Module present, connect to VeeT |
||
|
7 |
LV-TTL-I |
RS0 |
N/A |
1 |
|
8 |
LV-TTL-O |
LOS |
LOS of Signal |
2 |
|
9 |
LV-TTL-I |
RS1 |
N/A |
1 |
|
10 |
VeeR |
Reciever Ground |
||
|
11 |
VeeR |
Reciever Ground |
||
|
12 |
CML-O |
RD- |
Reciever Data Inverted |
|
|
13 |
CML-O |
RD+ |
Reciever Data Non-Inverted |
|
|
14 |
VeeR |
Reciever Ground |
||
|
15 |
VccR |
Reciever Supply 3.3V |
||
|
16 |
VccT |
Transmitter Supply 3.3V |
||
|
17 |
VeeT |
Transmitter Ground |
||
|
18 |
CML-I |
TD+ |
Transmitter Data Non-Inverted |
|
|
19 |
CML_I |
TD- |
Transmitter Data Inverted |
|
|
20 |
VeeT |
Transmitter Ground |
1. Signals not supported in SFP28 Copper pulled-down to VeeT with 30K ohms resistor
2. Passive cable assemblies do not support LOS and TX_DIS
Application
Applications
- 100GE/25 Gigabit Ethernet
- Switches, Routers, and HBAs
- Data Centers
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Refund Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at support@baudcom.com.cn. Please note that returns will need to be sent to the following address: Room 519A, Building A, Lianming Rd 389, Minhang District, Shanghai, China
You can always contact us for any return question at support@baudcom.com.cn.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like custom products (such as special orders or personalized items). Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
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If more than 15 business days have passed since we’ve approved your return, please contact us at info@baudcom.com.cn.
