4-Channel QSFP-DD 400Gdps Product Test And Evaluation Board
QSFP-DD (also known as QSFP56-DD) stands for four-channel small
pluggable dual density and is an optical module interface designed
for 400G and higher rate applications. It is fully compliant with
the IEEE802.3bs and QSFP-DD MSA (Multi-Source Protocol) standards
and achieves higher bandwidth and data transfer rates by providing
double the number of electrical channels (compared to the standard
QSFP28).
Features of 4-channel 400G QSFP-DD
High speed: Using PAM4 modulation technology, the data rate of each
channel can reach 50Gb/s, and the total throughput speed can reach
400G.
High density: Compared to the standard QSFP28 module, the QSFP-DD
module supports twice the number of high-speed electrical
interfaces, resulting in increased bandwidth density.
Backward compatibility: Support for existing QSFP modules such as
QSFP+, QSFP28, etc., provides flexibility for end users and system
designers.
Low power consumption: The power consumption is usually between
7-12W, and the lower power consumption helps to reduce the
operating cost of the transceiver.
High thermal performance: Improved thermal performance with 2x1
stacked integrated cage/connectors and thermal support for SMT
connectors and 1xN cage designs.
specification
| NO. | Index | Max | Min | Unit |
| 1 | Data rate | 28 | 25 | GBd |
| 2 | Adjustable output supply voltage | 4 | 2.8 | V |
| 3 | Accuracy of tension voltage regulation | 5 | mV |
| 4 | Monitoring voltage accuracy | 5 | mV |
| 5 | Monitoring current | 4000 | 0 | mA |
| 6 | Monitoring current accuracy | 0.1 | mA |
| 7 | I2C rate | 400 | 100 | KHz |
| 8 | Power supply voltage (external DC power input voltage) | 5.5 | 4 | V |
| 9 | Operating temperature | 85 | -40 | °C |
| 10 | Communication mode | USB HID, no drive. |
| 11 | TX,RX Electrical interface type | 40GHz 2x8 Multi-coaxial Connectors |
| 12 | Input/output level mode | CML |
| 13 | Maximum supported power consumption | 25W
|
