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1.25Gbps CSFP 20km

1.25Gbps CSFP 20km

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Specifications

  • ²úÆ·ÐͺÅ: CSFP-OC24-20Axx
  • ¼æÈÝÆ·ÅÆ: ȫϵÁÐ
  • ·â×°ÀàÐÍ: CSFP
  • ´«ÊäËÙÂÊ: Operating Data Rate up to 1.25Gbps
  • ´«Êä¾àÀë: 3~160KM¿ÉÑ¡
  • ·¢É䲨³¤: 1310nm/1550nm/1490nm ¿ÉÑ¡
  • ÎüÊÕ²¨³¤: 1310nm/1550nm/1490nm ¿ÉÑ¡
  • ÊÂÇéζÈ: ÉÌÒµ¼¶0¡æ¡«+70¡æ/¹¤Òµ¼¶-40¡æ¡«+85¡æ ¿ÉÑ¡
  • Êý×ÖÕï¶Ï: ´øDDM/²»´øDDM ¿ÉÑ¡
  • ÎüÊÕѸËÙ¶È: 3~160KM¿ÉÑ¡
  • ÎüÊÕѸËÙ¶È: 3~160KM¿ÉÑ¡

Description

CSFP-OC24-20Axx 1.25Gbps Compact Bi-Di SFP Transceiver, 20km Reach 1310nm TX / 1490 nm RX

Features

  •  Support 1.25Gbps data links
  •  1310nm FP laser and PIN photodetector for 20km transmission
  •  2xBi-directional transceivers in 1 SFP transceiver package
  •  Compliant with CSFP MSA Option 2 and SFF-8472
  •  Digital Diagnostic Monitoring:
  • Internal Calibration or External Calibration
  •  Compatible with SONET OC-24 system
  •  Compatible with RoHS
  •  +3.3V single power supply
  •  Operating case temperature:

 0 to +70°C(Commercial)

-40°C to +85°C (Industrial)

Applications

  •  SONET OC-24 system
  •  Gigabit Ethernet
  •  Fiber Channel
  •  Switch to Switch interface
  •  Point to Point FTTH Application
  •  Other optical transmission systems

Description

The CSFP transceivers are high performance, cost effective modules supporting 1.25Gbps and 20km transmission distance with SMF.The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.The transceivers are compatible with Compact SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

 

Absolute Maximum Ratings

Table 1 - Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage

Vcc

-0.5

4.5

V

Storage Temperature

Ts

-40

+85

°C

Operating Humidity

-

5

85

%

Recommended Operating Conditions

Table 2 - Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Commercial

Tc

0

+70

°C

Industrial

-40

+85

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

600

mA

Data Rate

1250

Mbps

Optical and Electrical Characteristics

CSFP-OC24-20Axx:  (FP and PIN, 1310nm, 20km Reach)

Table 3 - Optical and Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1260

1310

1360

nm

Spectral Width (RMS)

4

nm

Average Output Power

Pout

-9

-3

dBm

1

Extinction Ratio

ER

9

dB

Optical Rise/Fall Time (20%~80%)

tr/tf

0.26

ns

Data Input Swing Differential

VIN

400

1800

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

1510

nm

Receiver Sensitivity

-23

dBm

3

Receiver Overload

-3

dBm

3

LOS De-Assert

LOSD

-23

dBm

LOS Assert

LOSA

-35

dBm

LOS Hysteresis

1

4

dB

Data Output Swing Differential

Vout

400

1800

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

Table 4 - 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_clock

100

KHz

MOD_DEF (1,2)-High

VH

2

Vcc

V

MOD_DEF (1,2)-Low

VL

0.8

V

Diagnostics

Table 5 – Diagnostics Specification

Parameter

Range

Unit

Accuracy

Calibration

Temperature

0 to +70

°C

±3°C

Internal / External

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

-23 to -3

dBm

±3dB

Internal / External

Pin Descriptions

Pin

Name

Description

Plug Seq

Notes 

1

VEE

Transceiver ground, common for 2 channels

2

Tx_ Fault

Open collector/drain output, high signal indicates fault in one of the TX channels

3

TX_DI S1

Transmitter disable control of channel 1, high signal disables optical output

4

SDA

I2C data (SDA)

5

SCL

I2C clock (SCL)

6

TD-2

Inverted transmitter data input of channel 2 (internally AC coupled)

7

TD+2

Non-inverted transmitter data input of channel 2 (internally AC coupled)

8

LOS1

Open collector/drain output, high signal indicates los of signal in RX channel 1

9

RD+2

Non-inverted receiver data output of channel 2 (internally AC coupled)

10

RD-2

Inverted receiver data output of channel 2 (internally AC coupled)

11

VEE

Transceiver ground, common for 2 channels

12

RD-1

Inverted receiver data output of channel 1 (internally AC coupled)

13

RD+1

Non-inverted receiver data output of channel 1 (internally AC coupled)

14

LOS2

Open collector/drain output, high signal indicates los of signal in RX channel 2

15

VccR

Receiver power, common for 2 channels

16

VccT

Transmitter power, common for 2 channels

17

TX_ DIS2

Transmitter disable control of channel 2, high signal disables optical output

18

TD+1

Non-inverted transmitter data input of channel 1 (internally AC coupled)

19

TD-1

Inverted transmitter data input of channel 1 (internally AC coupled)

20

VEE

Transceiver ground, common for 2 channels

Notes:

Plug Seq.: Pin engagement sequence during hot plugging.

1) TX Fault report transceiver status as following:

TX Fault is an open collector/drain output, which should be pulled up with a 4.7K–10kΩ resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind either in Channel 1 or Channel 2. The Host shall read Channel 1/2:A2H/AAH: 110 for details: TX Fault from channel 1 if bit 2 is set in [A2H:110]; TX Fault fromchannel 2 if bit 2 is set in [B2H: 110]. Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.

2) TX_disable1, 2 are an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7–10 kΩ resistor. Its states are:

Low (0 – 0.8V):              Transmitter on

(>0.8V, < 2.0V):             Undefined

High (2.0 to 3.465V):         Transmitter Disabled

Open:                      Transmitter Disabled

  1. 1,kΩ resistor on the host board. The pull-up voltage shall be VccT or VccR.

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

  1. 1,2is an open collector output, which should be pulled up with a 4.7k~10kΩ Llsignal; L0 indicates normal operation. In the low state, the output will be pulled to less than

5) RD1,2-/+: 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) TD1,2-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 100Ω differential termination inside the module.

Regulatory Compliance

F-tone Networks SFP transceiver is designed to be Class I Laser safety compliant and is certified per the following standards

Feature

Agency

Standard

Laser Safety

FDA

CDRH 21 CFR 1040 annd Laser Notice No. 50

Product Safety

BST

EN 60825-1£º2007

EN 60825-2£º2004

EN 60950-1£º2006

Environmental protection

SGS

RoHS Directive 2002/95/EC

EMC

CCIC

EN 55022£º2006+A1£º2007

EN 55024£º1998+A1£º2001+A2£º2003

Ordering information

Part Number

Product Description

CSFP-OC24-20A

1.25Gbps, Tx1310nm / Rx 1490nm; Compact SFP bidi, 20KM, DDM   0ºC ~ +70ºC

CSFP-OC24-20AI

1.25Gbps, Tx1310nm / Rx 1490nm; Compact SFP bidi, 20KM, DDM   -40°C to +85°C

Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks 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 F-tone Networks or others. Further details are available from any F-tone Networks sales representative.

 

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