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10G 80km 1550nm XFP Optical Transceiver SPT-XFP-ZR

1550nm 1G fiber optic transceiver
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Features

  • XFP MSA Compliant
  • data rate from 9.95 Gbps to 11.1Gbps
  • No Reference Clock required
  • Cold Start up Wavelength Compliance
  • EML transmitter and APD receiver
  • link length up to 80km
  • Low Power Dissipation 3.5W Maximum
  • -5ºC to 70ºC Operating Case Temperature
  • Diagnostic Performance Monitoring of module temperature, supply
    • Voltages, laser bias current, transmit optical power, receive optical power
  • RoHS compliant and lead free

Applications

  • SONET OC-192&SDH STM 64
  • 10G Ethernet
  • 80 km 10G Fiber Channel

Description

XFP Transceiver is designed for 10G SDH, 10G ZR and 10G Fiber- Channel applications.

The transceiver consists of two sections: The transmitter section incorporates a colded EML laser. And the receiver section consists of a APD photodiode integrated with a TIA. All modules satisfy class I laser safety requirements. XFP transceiver provides an enhanced monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage.

 

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage 1

Vcc3

-0.5

4.0

V

Supply Voltage 2

Vcc5

-0.5

6.0

V

Supply Voltage 3

Vcc2

 

2

 

Storage Temperature

Tst

-40

85

ºC

Case Operating Temperature

Top

-5

70

ºC

Optical Input Received Power

APD-IN

-

-8

dBm

Operating Conditions

 

Parameter

Symbol

Min

Typical

Max

Unit

Supply Voltage 1

Vcc3

3.13

3.3

3.47

V

Supply current 1

Icc3

 

 

750

mA

Supply Voltage 2

Vcc5

4.75

5

5.25

V

Supply current 2

Icc5

 

 

500

mA

Supply Voltage 3

Vcc2

1.71

1.8

1.89

V

Supply current 3

Icc2

 

 

750

mA

Operating Case temperature

Tca

-5

-

70

ºC

Module Power Dissipation

Pm

-

 

3.5

W

 

Transmitter Specifications – Optical

 

Parameter

Symbol

Min

Typical

Max

Unit

Data Rate Multirate

Mra

9.95

-

11.1

Gbps

Center Wavelength

lc

 

1550

 

pm

Optical Transmit Power

Po

0

-

+4

dBm

Optical Transmit Power (disabled)

PTX_DISABLE

-

-

-30

dBm

Extinction Ratio

ER

8.2

 

-

dB

Channel Spacing

∆f

-

100

-

GHz

Jitter Generation

TJP-P

-

-

0.1

UI

Spectral Width (-20dB)

Dl20

-

0.1

0.3

nm

Side Mode Suppression Ratio

SMSR

30

-

-

dB

Dispersion penalty(800ps/nm)

DP

 

 

2

dB

Eye Mask

Compliant with ITU-T G.691 STM-64 eye mask

 

 

 

Transmitter Specifications – Electrical

 

Parameter

Symbol

Min

Typical

Max

Unit

Input differential impedance

Rim

-

100

-

Ω

Differential data Input

VtxDIFF

120

-

850

mV

Transmit Disable Voltage

VD

2.0

-

Vcc3+0.3

V

Transmit Enable Voltage

Ven

0

-

+0.8

V

Transmit Disable Assert Time

Vn

-

-

10

us

 

 

Receiver Specifications – Optical

 

Parameter

Symbol

Min

Typical

Max

Unit

Data Rate Multirate

Mra

9.95

-

11.1

Gbps

Receiver Sensitivity 9.95Gb/s

Rsens9

-

-

-24

dBm

Receiver Sensitivity 10.7Gb/s

Rsens10

-

-

-23

dBm

Maximum Input Power

RX-overload

-

-

-7

dBm

Input Operating Wavelength

λ

1528

-

1564

nm

Reflectance

Rrx

-

-

-27

dB

Loss of Signal Asserted

 

-34

-

-

dBm

LOS De-Asserted

 

-

-

-24

dBm

LOS Hysteresis

 

0.5

-

-

dB

 

Receiver Specifications – Electrical

 

Parameter

Symbol

Min

Typical

Max

Unit

Differential Output Swing

Vout P-P

350

-

850

mV

Rise/Fall Time

Tr / Tf

24

-

-

ps

Loss of Signal –Asserted

VOH

2

-

Vcc3+0.3-

V

Loss of Signal –Negated

VOL

0

-

+0.4

V

Low Speed Electrical Signal Timings

 

Parameter

Symbol

Min

Typical

Max

Unit

TX Disable, Power_Down/RST

VIH

2.0

 

Vcc3+0.3

V

VIL

-0.3

 

0.8

V

Interrupt, Mod_NR, Rx_Los

VOH

Vdd3-0.5

 

Vdd3+0.3

V

VOL

0

 

0.4

V

SCL,SDA(IN)

VIH

Vdd3*0.7

 

Vdd3+0.5

V

VIL

-0.3

 

Vdd3*0.3

V

SCL,SDA(OUT)

VOH

Vdd3-0.5

 

Vdd3+0.3

V

VOL

0

 

0.4

V

I2C clock rate

t_reset

 

-

400

KHz

Leakage current

IL

-

-

100

uA

Pin Descriptions

 

Pin

Logic

Symbol

Name/Description

Ref.

1

 

GND

Module Ground

1

2

 

VEE5

Optional –5.2 Power Supply – Not required

 

3

LVTTL-I

Mod-Desel

Module De-select; When held low allows the module to , respond to 2-wire serial interface commands

 

4

LVTTL-O

Interrupt

Interrupt (bar); Indicates presence of an important condition which can be read over the serial 2-wire interface

2

5

LVTTL-I

TX_DIS

Transmitter Disable; Transmitter laser source turned off

 

6

 

VCC5

+5 Power Supply

 

7

 

GND

Module Ground

1

8

 

VCC3

+3.3V Power Supply

 

9

 

VCC3

+3.3V Power Supply

 

10

LVTTL-I

SCL

Serial 2-wire interface clock

2

11

LVTTL- I/O

SDA

Serial 2-wire interface data line

2

12

LVTTL-O

Mod_Abs

Module Absent; Indicates module is not present. Grounded in the module.

2

13

LVTTL-O

Mod_NR

Module Not Ready;

2

14

LVTTL-O

RX_LOS

Receiver Loss of Signal indicator

2

15

 

GND

Module Ground

1

16

 

GND

Module Ground

1

17

CML-O

RD-

Receiver inverted data output

 

18

CML-O

RD+

Receiver non-inverted data output

 

19

 

GND

Module Ground

1

20

 

VCC2

+1.8V Power Supply

 

21

LVTTL-I

P_Down/RST

Power Down; When high, places the module in the low power stand-by mode and on the falling edge of P_Down initiates a module reset

 

Reset; The falling edge initiates a complete reset of the module including the 2-wire serial interface, equivalent to a power cycle.

 

22

 

VCC2

+1.8V Power Supply

 

23

 

GND

Module Ground

1

24

PECL-I

RefCLK+

Reference Clock non-inverted input, AC coupled on the host board – Not required

3

25

PECL-I

RefCLK-

Reference Clock inverted input, AC coupled on the host board – Not required

3

26

 

GND

Module Ground

1

27

 

GND

Module Ground

1

28

CML-I

TD-

Transmitter inverted data input

 

29

CML-I

TD+

Transmitter non-inverted data input

 

30

 

GND

Module Ground

1

 

Notes:

1. Module circuit ground is isolated from module chassis ground within the module.

2. Open collector; should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.

3. A Reference Clock input is not required.

 

Figure1.Electrical Pin-out Details

 

Digital Diagnostic Functions

SPT-XFP-ZR Small Form Factor 10Gb/s (XFP) transceivers are compliant with the current XFP Multi-Source Agreement (MSA) Specification Rev 4.5.

As defined by the XFP MSA, XFP transceivers provide digital diagnostic functions via a 2-wire serial interface, which allows real-time access to the following operating parameters:

  • Transceiver temperature
  • Laser bias current
  • Transmitted optical power
  • Received optical power
  • Transceiver supply voltage

It also provides a sophisticated system of alarm and warning flags, which may be used to alert end-users when particular operating parameters are outside of a factory-set normal range.

 

 

Figure2.wire Serial Digital Diagnostic Memory Map

 

The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller inside the transceiver, which is accessed through the 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL pin) is generated by the host. The positive edge clocks data into the XFP transceiver into those segments of its memory map that are not write-protected. The negative edge clocks data from the XFP transceiver. The serial data signal (SDA pin) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol

activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially. The 2-wire serial interface provides sequential or random access to the 8 bit parameters, addressed from 000h to the maximum address of the memory.

EEPROM Serial ID Memory Contents (Table 01h):

 

Data Address

Field Size

(Bytes)

Name of Field

Description and Contents

Base ID Fields

128

1

Identifier

Type of Serial transceiver (06h=XFP)

129

1

Ext. Identifier

TX Ref Clock Input not Required (90h)

130

1

Connector

Code of optical connector type (07h=LC)

131-138

8

Transceiver

10G ZR

139

1

Encoding

NRZ(10h)

140

1

BR-MIN

9.953Gbps(63h)

141

1

BR-MAX

11.3Gbps(71h)

142

1

Length(SMF)-km

80KM(50h)

143

1

Length(E-50um)

(00h)

144

1

Length(50um)

(00h)

145

1

Length(62.5um)

(00h)

146

1

Length(Copper)

(00h)

147

1

Device Tech

Cooled1550nm EML, PIN Detector(74h)

148-163

16

Vendor Name

XFP vendor name: “SOPTO” (ASCII)

164

1

CDR Support

CDR supports 9.953Gbps~11.1Gbps(F8h)

165-167

3

Vendor OUI

XFP transceiver vendor OUI ID

168-183

16

Vendor PN

Part Number: “SPT-XFP-ZR” (ASCII)

184-185

2

Vendor rev

“32 61” means 2a revision (ASCII)

186-187

2

Wavelength

Wavelength

188-189

2

Wavelength Tolerance

+/-0.025nm

190

1

Max Case Temp

70°C(46h)

191

1

CC_BASE

Check sum of bytes 128~190

192-195

4

Power Supply

3.5W(MAX) (AF 96 A7 01)

196-211

16

Vendor SN

Serial number (ASCII)

212-219

8

Date code

Year(2 bytes), Month(2 bytes), Day (2 bytes)

220

1

Diagnostic type

No BER Support, Average Power(08h)

221

1

Enhanced option

Optional Soft Tx_Disable and P_Down(60h)

222

1

Aux Monitoring

+5.0V and +3.3V Supply Voltage(67h)

223

1

CC_EXT

Check sum of bytes 192~222

Vendor Specific ID fields

224-255

32

Vendor specific

Vendor specific

 

 

Figure3. Recommended Host Board Power Supply Circuit

 

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