QSFP28 100Gb/s Direct Attached Cable

PRODUCT FEATURES

•Supports 103.125Gb/s and 112.2Gb/s bit rates •Up to 28.3125Gbps data rate per channel •Up to 5m transmission •Compliant with SFF-8636 •Operating temperature: 0~70°C •Single 3.3V power supply •Low total system power solution •Low total system EMI solution •RoHS compliant

APPLICATIONS

•100G Ethernet •InfiniBand EDR •Switches, servers and routers •Storage area networks

PRODUCT DESCRIPTION

Intcera’s QSFP28 Direct Attach Cables are compliant with the SFF-8665 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 5m).

Ordering Information

Part Number

Description

QP1H-DP1M30WG

100G QSFP28 DAC passive cable 30AWG 1m

QP1H-DP2M30WG

100G QSFP28 DAC passive cable 30AWG 2m

QP1H-DP3M26WG

100G QSFP28 DAC passive cable 26AWG 3m

QP1H-DP5M26WG

100G QSFP28 DAC passive cable 26AWG 5m

General Product Characteristics

QSFP+ DAC Specifications
Number of Lanes Tx & Rx
Channel Data Rate 28.3125 Gbps
Operating Temperature 0 to + 70°C
Storage Temperature -40 to + 85°C
Supply Voltage 3.3 V nominal
Electrical Interface 38 pins edge connector
Management Interface Serial, I2C

  High Speed Characteristics

Parameter Symbol Min Typ Max Units Notes
Differential Impedance Zd 90 100 110 ohm
 Differential Input Return Loss SDDXX <-12+2* SQRT (f) with f in GHz dB 0.01~4.1GHz
<-6.3+13*Log10/(f/5.5) with f in GHz  dB  4.1~19GHz
Common Mode Output Return Loss  SCCXX < -7+1.6*f with f in GHz dB 0.01~12.89GHz
-3 dB 12.89~19GHz
Difference Waveform Distortion Penalty dWDPc 6.75 dB
VMA Loss L 4.4 dB
VMA Loss to Crosstalk Ratio VCR 32.5 dB

Pin Function Definition

Pin Logic Symbol Description
1 GND

Ground

2 CML-I Tx2n

Transmitter Inverted Data Input

3 CML-I Tx2p

Transmitter Non-Inverted Data Input

4 GND

Ground

5 CML-I Tx4n

Transmitter Inverted Data Input

6 CML-I Tx4p

Transmitter Non-Inverted Data Input

7 GND

Ground

8 LVTTL-I ModSelL

Module Select

9 LVTTL-I ResetL

Module Reset

10 Vcc Rx

+3.3V Power Supply Receiver

11 LVCMOS-I/O SCL

2-wire serial interface clock

12 LVCMOS-I/O SDA

2-wire serial interface data

13 GND

Ground

14 CML-O Rx3p

Receiver Non-Inverted Data Output

15 CML-O Rx3n

Receiver Inverted Data Output

16 GND

Ground

17 CML-O Rx1p

Receiver Non-Inverted Data Output

18 CML-O Rx1n

Receiver Inverted Data Output

19 GND

Ground

20 GND

Ground

21 CML-O Rx2n

Receiver Inverted Data Output

22 CML-O Rx2p

Receiver Non-Inverted Data Output

23 GND

Ground

24 CML-O Rx4n

Receiver Inverted Data Output

25 CML-O Rx4p

Receiver Non-Inverted Data Output

26 GND

Ground

27 LVTTL-O ModPrsL

Module Present

28 LVTTL-O IntL

Interrupt

29 Vcc Tx

+3.3V Power supply transmitter

30 Vcc1

+3.3V Power supply

31 LVTTL-I LPMode

Low Power Mode

32 GND

Ground

33 CML-I Tx3p

Transmitter Non-Inverted Data Input

34 CML-I Tx3n

Transmitter Inverted Data Input

35 GND

Ground

36 CML-I Tx1p

Transmitter Non-Inverted Data Input

37 CML-I Tx1n

Transmitter Inverted Data Input

38 GND

Ground

Mechanical Specifications

The connector is compatible with the SFF-8665 specification.

Regulatory Compliance

Item 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 RoHS 6 compliant

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