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40Gbps QSFP+ ZR4 1310nm 80km SMF Transceiver

40Gbps QSFP+ ZR4 1310nm 80km SMF Transceiver

Product Descriptions

40Gbps QSFP+ ZR4 1310nm 80km SMF Transceiver

Product Description

ZK-QSFP+-40G-ER4

40Gbps QSFP+ ZR4 1310nm 80km SMF Transceiver

 

Features

n Support line rates for 41.25 Gb/s;

n Lane bit rate 10.3125 Gb/s 40GE

n Up to 80km transmission on single mode fiber

n LAN WDM EML laser and APD

n Support Multi-Pin function with IntL/RxLOSL and LPMode/TxDIS

n High speed I/O electrical interface (CAUI-4)

n I2C interface with integrated Digital Diagnostic monitoring

n QSFP+ MSA package with duplex LC connector

n Single +3.3V power supply

n Power dissipation

n Commercial：< 4.5W

n Industrial：< 5.5W

n Complies with EU Directive 2015/863/EU

 

Applications

n Data centers Switches and Routers

n Metro networks

n Switches and Routers

n 40G BASE-ZR4

 

Descriptions

ZK-QSFP+-40G-ER4 is designed for 80km optical communication applications. Optical transceiver integrates the transmit and receive path onto one module. On the transmit side, four lanes of serial data streams are recovered, retimed and passed on to four laser drivers, which control four electric-absorption modulated lasers (Lan-WDM) with 1296, 1300, 1305, and 1309 nm center wavelengths. The optical signals are then multiplexed into a single-mode fiber through an industry-standard LC connector. On the receive side, four lanes of optical data streams are optically De multiplexed by an integrated optical De multiplexer. And passed on to an output driver, the receiver adopts APD. This module features a hot-pluggable electrical interface, low power consumption, and 2-wire serial interface.

 

Absolute Maximum Ratings

It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module.

Parameter

Symbol

Min

Max

Unit

Notes

Storage Temperature

TS

-40

85

deg°C


Operating Case Temperature

TOP

-40

85

deg°C


Power Supply Voltage

VCC

-0.5

3.6

V


Damage Threshold, each Lane

THd

-2.5


dBm


Relative Humidity (non-condensation)

RH

0 to 85% non-condensing

%


 

Recommended Operating Conditions

Parameter

Symbol

Min

Typ

Max

Unit

Notes

Operating Case Temperature

Top

0


+70

°C

Commercial

-40


+85

Industrial

Power Supply Voltage

VCC

3.14

3.3

3.47

V


Maximum Power Dissipation

PD



4.5

W

Commercial

Maximum Power Dissipation

PD



5.5

W

Industrial

Lane Bit Rate



10.3125


Gb/s


Transmission Distance

TD



40

km


Coupled fiber

Single mode fiber

1

Notes:

1. Optical fiber use 9/125um SMF。

 

Electrical Characteristics

The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter

Test Point

Min

Typ

Max

Unit

Notes

Transmitter (Module Input)

Data Rate, each lane



10.3125


Gbps


Differential Voltage pk-pk

Vpp



900

Mv

1

Common Mode Voltage

Vcm

-350


2850

Mv


Transition time

Trise/Tfall

10



ps

2

Receiver (Module Output)

Data Rate, each lane



10.3125


Common Mode Noise, RMS

Vrms



17.5

Mv


Differential output voltage swing

Vout, pp



900

Mv


Eye width

EW15

0.57



UI


Eye height

EH15

228



mV


Differential Termination Resistance Mismatch




10

%

1

Transition time

Trise/Tfall

12



ps


Common Mode Noise, RMS

Vrms



17.5

Mv


Notes:

1. At 1 MHz.

2. 20%~80%.

 

Optical and Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

Note

Transmitter

Signaling Speed per Lane



10.3125


Gbps


Center Wavelength Lane 0

λ0

1294.53

1295.56

1296.59

nm


Center Wavelength Lane 1

λ1

1299.02

1300.05

1301.09

nm


Center Wavelength Lane 2

λ2

1303.54

1304.58

1305.63

nm


Center Wavelength Lane 3

λ3

1308.09

1309.14

1310.19

nm


Total Launch Power,40GE

PT



12.5

dBm

1

Average Launch Power per Lane,

Pavg

1


6.5

dBm

1

OMA, each Lane

POMA

2


6.5

dBm

1

Difference in launch power between any two lanes(Average and OMA) between any Two Lanes (OMA)

Ptx,diff



3

Db


Average Output Power (Laser Turn off)

Poff



-30

dBm


Side Mode Suppression Ratio

SMSR

30



Db


Extinction Ratio, 100GE

ER

8.2



Db


RIN20OMA

RIN



-130

Db/Hz


Optical Return Loss Tolerance

TOL



20

Db


Transmitter Reflectance

RT



-12

Db


Optical Eye Mask

{0.25,0.4, 0.45, 0.25, 0.28, 0.4}

%


Receiver

Signaling rate, each lane



10.3125


Gbps


Center Wavelength Lane 0

λ0

1294.53

1295.56

1296.59

nm


Center Wavelength Lane 1

λ1

1299.02

1300.05

1301.09

nm


Center Wavelength Lane 2

λ2

1303.54

1304.58

1305.63

nm


Center Wavelength Lane 3

λ3

1308.09

1309.14

1310.19

nm


Damage threshold , each lane

Pd amage

-2.5



dBm


Average power at receiver input , each lane

R

-24


-6

dBm

2

Los Assert

LosA

-35



dBm


Los De-assert

LosDA



-25

dBm


Los Hysteresis

LosH

0.5



dB


Notes:

1. The optical power is launched into SMF。

2. Measured with a PRBS 231-1 test pattern @10.3125 Gb/s, PRBS 2^31-1.

 

Digital Diagnostics

Parameter

Unit

Specification

Temperature Monitor absolute error

℃

± 3.0

Supply Voltage Monitor absolute error

%

± 5

I_bias Monitor absolute error

%

± 10

Received Power (Rx) Monitor absolute error

dB

± 3.0

Transmit Power (Tx) Monitor absolute error

dB

± 3.0

 

Module Block Diagram
image.png

 


Pin Diagram
image.png

 

Pin Definitions

PIN

Logic

Symbol

Description

Plug Seq.

Notes

1


GND

Ground

1

1

2

CML-I

Tx2n

Transmitter Inverted Data Input

3


3

CML-I

Tx2p

Transmitter Non-Inverted Data output

3


4


GND

Ground

1

1

5

CML-I

Tx4n

Transmitter Inverted Data Input

3


6

CML-I

Tx4p

Transmitter Non-Inverted Data output

3


7


GND

Ground

1

1

8

LVTLL-I

ModSelL

Module Select

3


9

LVTLL-I

ResetL

Module Reset

3


10


VccRx

﹢3.3V Power Supply Receiver

2

2

11

LVCMOS-I/O

SCL

2-Wire Serial Interface Clock

3


12

LVCMOS-I/O

SDA

2-Wire Serial Interface Data

3


13


GND

Ground

1


14

CML-O

Rx3p

Receiver Non-Inverted Data Output

3


15

CML-O

Rx3n

Receiver Inverted Data Output

3


16


GND

Ground

1

1

17

CML-O

Rx1p

Receiver Non-Inverted Data Output

3


18

CML-O

Rx1n

Receiver Inverted Data Output

3


19


GND

Ground

1

1

20


GND

Ground

1

1

21

CML-O

Rx2n

Receiver Inverted Data Output

3


22

CML-O

Rx2p

Receiver Non-Inverted Data Output

3


23


GND

Ground

1

1

24

CML-O

Rx4n

Receiver Inverted Data Output

3

1　

25

CML-O

Rx4p

Receiver Non-Inverted Data Output

3


26


GND

Ground

1

1

27

LVTTL-O

ModPrsL

Module Present

3


28

LVTTL-O

IntL/Rx_LOS

Interrupt/Rx_LOS

3


29


VccTx

+3.3 V Power Supply transmitter

2

2

30


Vcc1

+3.3 V Power Supply

2

2

31

LVTTL-I

LPMode/TxDIS

Low Power Mode/Tx_Disable

3


32


GND

Ground

1

1

33

CML-I

Tx3p

Transmitter Non-Inverted Data Input

3


34

CML-I

Tx3n

Transmitter Inverted Data Output

3


35


GND

Ground

1

1

36

CML-I

Tx1p

Transmitter Non-Inverted Data Input

3


37

CML-I

Tx1n

Transmitter Inverted Data Output

3


38


GND

Ground

1

1

Notes:

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.

2. Vcc Rx, Vcc1 and Vcc Tx are the receiver and transmitter power supplies and shall be applied concurrently. Requirements defined for the host side of the Host Edge Card Connector are listed in MSA. The connector pins are each rated for a maximum current of 1000 Ma

 

Recommended Interface Circuit
image.png


 

Mechanical Dimensions
image.png

 

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