Overview

GSFP-ZX-SF-120KM

GSFP-ZX-SF-120KM Bi-Directional transceiver is a high performance, cost effective module ,which is compliant with LC Optics interface with built in WDM for Bi-Directional serial optical data communication applications. This module is designed for Single-Mode single fiber, operates at the normal wavelength of 1550/1490nm.Standard AC coupled CML for high speed signal and LVTTL control and monitor signals.

The transmitter section incorporates FP and driver IC with temperature compensation and automatic power control circuit, which make the transmitter section output power and Extinction ration stabled in operation temperature. The receiver section incorporates an efficient InGaAs photodiode and trans impedance with AGC for wide dynamic range.

Datasheet Get Quote

  Features

  • Up to 1.25Gbps bi-directional data links
  • 1550nm FP laser and PIN photo detector for 80km transmission
  • Compliant with SFP MSA and SFF-8472 with single LC receptacle
  • Digital Diagnostic Monitoring: Internal Calibration or External Calibration
  • Compatible with SONET
  • Compatible with RoHS
  • +3.3V single power supply
  • Operating case temperature:
  • Standard :0°C to +70°C
  • Industrial : -40°C to +85°C

Applications

  • SDH and SONET System
  • Fiber Channel
  • WDM Application
  • Switch to Switch interface
  • Router/Server interface
  • Switched backplane applications
  • Other optical transmission systems

Specification

Absolute Maximum Ratings

Parameter

Symbol

Min.

Typical

Max.

Unit

Storage Temperature

TS

-40

+85

°C

Supply Voltage

VCCT, R

-0.5

4.5

V

Relative Humidity

RH

5

85

%

Recommended Operating Environment

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Standard

Tc

0

+70

°C

Industrial

-40

+85

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

300

mA

Data Rate

1.25

Gbps

Optical and Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1530

1350

1570

nm

Spectral Width (-20dB)

∆λ

1

nm

Side-Mode Suppression

Ratio

SMSR

30

Average Output Power

Pout

0

5

dBm

1

Extinction Ratio

ER

9

dB

Data Input Swing

Differential

VIN

180

1200

mV

2

Input Differential

Impedance

ZIN

90

100

110

Ω

TX

Disable

Disable

2.0

Vcc

V

Enable

0

0.8

V

TX Fault

Fault

2.0

Vcc

V

Normal

0

0.8

V

Receiver

Centre Wavelength

λc

1470

1490

1510

nm

Receiver Sensitivity

-23

dBm

3

Receiver Overload

-1

dBm

3

LOS De-Assert

LOSD

-27

dBm

LOS Assert

LOSA

-38

dBm

LOS Hysteresis

0.5

4

dB

Data Output Swing

Differential

Vout

600

800

1000

mV

4

LOS

High

2.0

Vcc

V

Low

0.8

V

Notes:

  1. The optical power is launched into SMF.
  2. PECL input, internally AC-coupled and terminated.
  3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12.
  4. Internally AC-coupled.

Timing and Electrical

Parameter

Symbol

Min

Typical

Max

Unit

Tx Disable Negate Time

t_on

1

ms

Tx Disable Assert Time

t_off

10

µs

Time To Initialize, including

Reset of Tx Fault

t_init

300

ms

Tx Fault Assert Time

t_fault

100

µs

Tx Disable To Reset

t_reset

10

µs

LOS Assert Time

t_loss_on

100

µs

LOS De-assert Time

t_loss_off

100

µs

Serial ID Clock Rate

f_serial_clo

ck

100

400

KHz

MOD_DEF (0:2)-High

VH

2

Vcc

V

MOD_DEF (0:2)-Low

VL

0.8

V

Diagnostics

Parameter

Range

Unit

Accuracy

Calibration

Temperature

0 to +70

°C

±3°C

Internal / External

-40 to +85

Voltage

3.0 to 3.6

V

±3%

Internal /

External

Bias Current

0 to 100

mA

±10%

Internal /

External

TX Power

-9 to -3

dBm

±3dB

Internal /

External

RX Power

-4 to -23

dBm

±3dB

Internal /

External

Digital Diagnostic Memory Map

The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA).

The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring.

The digital diagnostic memory map specific data field defines as following.

Pin Definitions

Pin Descriptions

Pin

Signal Name

Description

Plug Seq.

Notes

1

VEET

Transmitter Ground

1

2

TX FAULT

Transmitter Fault Indication

3

Note 1

3

TX DISABLE

Transmitter Disable

3

Note 2

4

MOD_DEF(2)

SDA Serial Data Signal

3

5

MOD_DEF(1)

SCL Serial Clock Signal

3

6

MOD_DEF(0)

TTL Low

3

7

Rate Select

Not Connected

3

8

LOS

Loss of Signal

3

Note 3

9

VEER

Receiver ground

1

10

VEER

Receiver ground

1

11

VEER

Receiver ground

1

12

RD-

Inv. Received Data Out

3

Note 4

13

RD+

Received Data Out

3

Note 4

14

VEER

Receiver ground

1

15

VCCR

Receiver Power Supply

2

16

VCCT

Transmitter Power Supply

2

17

VEET

Transmitter Ground

1

18

TD+

Transmit Data In

3

Note 5

19

TD-

Inv. Transmit Data In

3

Note 5

20

VEET

Transmitter Ground

1

Notes:

Plug Seq.: Pin engagement sequence during hot plugging.

    1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; Logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.
    2. TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7k~10kΩ resistor. Its states are: Low (0 to 0.8V): Transmitter on (>0.8V, < 2.0V): UndefinedHigh (2.0 to 3.465V): Transmitter Disabled Open: Transmitter Disabled
    3. Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7k~10kΩ resistor on the host board. The pull-up voltage shall be VccT or VccR.  Mod-Def 0 is grounded by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID
    4. LOS is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor. Pull up voltage between 2.0V and Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.
    5. RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differential lines which should be terminated with 100Ω (differential) at the user SERDES.
    6. TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential termination inside the module.
GSFP-ZX-SF-80KM GSFP-TX