Sign In | Join Free | My phrmg.org
China shenzhen sinovo telecom co ltd logo
shenzhen sinovo telecom co ltd
concentrate on 100g green datacenter solution
Active Member

4 Years

Home > 无源dac cable >

25g dac cable

shenzhen sinovo telecom co ltd

25g dac cable

25G QSFP+ Direct Attach Cable (DAC) Datasheet

SODA-25G-1*1-DAC-XXM

General Description

SFP28 Direct Attach Cables are compliant with SFF-8432 and SFF-8402 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).

Features

Up to 25.88243 Gbps data rate
Up to 5 meter transmission
Hot-pluggable SFP 20PIN footprint
Improved Pluggable Form Factor(IPF)

compliant for enhanced EMI/EMC

performance
Compatible to SFP28 MSA
Compatible to SFF-8402 and SFF-8432 Temperature Range: 0~ 70 °C
RoHS Compatible

Benefits

Cost-effective copper solution
Lowest total system power solution Lowest total system EMI solution
Optimized design for Signal Integrity

Applications

25G Ethernet

Product Description

The SFP28 passive cable assemblies are high performance, cost effective I/O solutions for 25G Ethernet. SFP28 copper cables allow hardware manufactures to achieve high port density, configurability and utilization at a very low cast and reduced power budget

High Speed Characteristics

Parameter Symbol Min

Typical

Max

Unit

RIN,P-P

Differential Impedance

90

100 110

Ώ

SDD21

Insertion loss

8

22.48

dB

SDD11

12.45

See 1

dB

Differential Return Loss

SDD22

3.12

See 2

dB

At 4.1 to 19 GHz

Common-mode to common-mode

SCC11

2

dB

SCC22

output return loss

12

See 3

At 0.01 to 12.89 GHz

Differential to common-mode

SCD11

SCD22

dB

return loss

10.58

See 4

Note

At 12.8906 GHz At 0.05 to 4.1 GHz

At 0.2 to 19 GHz

At 12.89 to 19 GHz

10

At 0.01 to 12.89 GHz

Differential to common Mode

SCD21-IL

Conversion Loss

See 5 dB

At 12.89 to 15.7 GHz

Channel Operating Margin

COM

3 dB

6.3

At 15.7 to 19 GHz

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

Pin Descriptions

SFP28 Pin Function Definition

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

Signals not supported in SFP+ Copper pulled-downto VeeT with 30K ohms resistor Passive cable assemblies do not support LOS and TX_DIS

1.

2.

Mechanical Specifications

The connector is compatible with the SFF-8432 specification.

Length (m)

Cable AWG

1

30

2

30

3

30/26

4

26

5

26

Regulatory Compliance

Feature

Test Method

Performance

Electrostatic Discharge (ESD) to the Electrical Pins

MIL-STD-883C Method 3015.7

Class 1(>2000 Volts)

Electromagnetic Interference(EMI)

FCC Class B

Compliant with Standards

CENELEC EN55022 Class B

CISPR22 ITE Class B

RF Immunity(RFI)

IEC61000-4-3

Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz

RoHS Compliance

RoHS Directive 2011/65/EU and it's Amendment Directives 6/6


 25g dac cable Manufactures

25g dac cable Images

Inquiry Cart 0
Send your message to this supplier
 
*From:
*To: shenzhen sinovo telecom co ltd
*Subject:
*Message:
Characters Remaining: (0/3000)
 
You May Like