G-PON ONU Transceiver

Page 1 of 5Coretek Opto Corp. 1F,10 Industry E. Rd. IV., Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. 01/19/2010http://www.coretek.com.tw Tel:886-3-5787871 Fax:886-3-5645105 Version：C

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SFF 2x5, Single SC/APC Pigtail, 1310nm DFB LD, Power Budget 29dB, RoHS CompliantExtended Operating Temperature from –40 to +85℃

Applications Gigabit-capable Passive Optical Network ONU

side. Gigabit Ethernet Point-to-Point Bi-directional

Transmission. Burst mode application. FTTx broadband access system.

Features TX:1310nm DFB LD Burst Mode

RX:1490nm APD CW Mode

Upstream:1244Mbps, Downstream:2488Mbps

Single +3.3V Power Supply

RoHS Compliant and Lead-free

PECL Differential Electrical Interface

Compliant with Multi-Source Agreement (MSA)Small Form Factor (SFF) 2x5 Footprint

Single SC/APC Connector

Compliance with ITU-T G.984.2 GPON ONUClass B+

Eye SafetyDesigned to meet Laser Class 1 comply withEN60825-1

DescriptionThe CT-1225TGF-IH5V-A from Coretek Opto Corp. is the high performance and cost-effective module for

serial optical telecommunication applications specified for single mode of TX 1244Mb/s / RX 2488Mb/s. Itoperates with +3.3V power supply. The module is intended for single mode fiber, operates at a nominalwavelength of Tx: 1310nm / Rx: 1490nm and complies with Multi-Source Agreement (MSA) Small Form Factor(SFF) 2x5 footprint. Each module consists of a bi-directional optical subassembly that combines a transmitterwith a receiver and an electrical subassembly. All of them are housed in a metal package and the combinationproduces a reliable component.

The module is a single fiber connector transceiver designed for use in Gigabit-capable Passive OpticalNetwork (GPON) ONU applications. The transmitter is operating at burst mode and the receiver is operating atcontinuous mode. The characteristics are performed in accordance with Telcordia Specification GR-468-CORE.

EMCMost equipment utilizing high-speed transceivers will be required to meet the following requirements:

1) FCC in the United States2) CENELEC EN55022 (CISPR 22) in Europe

To assist the customer in managing the overall equipment EMC performance, the transceivers have beendesigned to satisfy FCC class B limits and provide good immunity to radio-frequency electromagnetic fields.

Eye SafetyThe transceivers have been designed to meet Class 1 eye safety and comply with EN 60825-1.

PbRoHS

G-PON ONU Transceiver

Page 2 of 5Coretek Opto Corp. 1F,10 Industry E. Rd. IV., Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. 01/19/2010http://www.coretek.com.tw Tel:886-3-5787871 Fax:886-3-5645105 Version：C

Product Information

Model NumberOperatingVoltage &

SD IN/OUTBurst Control TX RX Output Power Sensitivity

CT-1225TGF-IH5V-A 3.3V LVTTLDC/AC

LVTTL(Enable:Logic”1”)

1244Mbps1310 nm DFB

2488Mbps1490 nm APD +0.5 ~ +5 dBm ≦-28 dBm

ABSOLUTE MAX RATINGSPARAMETER SYMBOL MIN MAX UNIT NOTE

Storage Temperature TS -40 85 ℃

Supply Voltage VCC 0 3.6 VLead Soldering Temperature/Time TSOLD 260 ℃ 10 sec on lead

OPERATING CONDITIONSPARAMETER SYMBOL MIN. TYP. MAX. UNIT NOTE

Case Operating Temperature TA -40 85 ℃

Supply Voltage VCC 3.1 3.5 V

ELECTRICAL CHARACTERISTICSPARAMETER SYMBOL MIN MAX UNIT NOTE

TransmitterTransmitter Supply Current ICCT 200 mATransmitter Data Input Differential Voltage VID 0.2 1.6 VLVTTL Transmit Burst Input Voltage - Low VIL 0 0.8 VLVTTL Transmit Burst Input Voltage - High VIH 2.4 3.3 VReceiverReceiver Supply Current ICCR 120 mAReceiver Data Output Differential Voltage VOD 0.4 1.6 VLVTTL Signal Detect Output Voltage – Low VOL 0 0.8 VLVTTL Signal Detect Output Voltage – High VOH 2.4 3.3 V

TRANSMITTER ELECTRO-OPTICAL CHARACTERISTICSPARAMETER SYMBOL MIN TYP. MAX UNIT NOTE

Data Rate 1244.16 Mb/sOptical Output Power(BOL) Po 1 5 dBmOptical Output Power(EOL) Po 0.5 5 dBmExtinction Ratio ER 10 dBCenter Wavelength λc 1290 1310 1330 nmSpectral Width (-20dB) Δλ 1 nmSide Mode Suppression Ratio SMSR 30 dBOptical Rise,Fall time (20%-80%) tr, , tf 260 ps 1TX burst on time Ton 12.86 ns 2TX burst off time Toff 12.86 ns 2Output Eye Compliant with G.984.2

G-PON ONU Transceiver

Page 3 of 5Coretek Opto Corp. 1F,10 Industry E. Rd. IV., Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. 01/19/2010http://www.coretek.com.tw Tel:886-3-5787871 Fax:886-3-5645105 Version：C

RECEIVER ELECTRO-OPTICAL CHARACTERISTICSPARAMETER SYMBOL MIN TYP. MAX UNIT NOTE

Data Rate 2488.32 Mb/sMaximum Input Optical Power Pmax -8 dBm 3Receiver Sensitivity Pmin -28 dBm 3Operating Wavelength λ 1480 1490 1500 nmIsolation @ 1540~1655 nm Iso 30 dBReturn Loss RL -30 dBSignal Detect - Asserted PA -28 dBm 4Signal Detect - Deasserted PD -40 dBm 5Signal Detect - Hysteresis PA - PD 0.5 6 dB

Notes:1. These are 20-80% values.2. Measured with 16 bits.3. Measured with 223-1 PRBS at BER<10-10

4. Measured on transition – low to high5. Measured on transition – high to low

BLOCK DIAGRAM OF TRANSCEIVER PIN OUT DIAGRAM OF TRANSCEIVER

TX

RX 1 2 3 4 5

678910V

EE

R

VC

CR

SDR

D-

RD

+

TD

-T

D+

TX_B

RST

VE

ET

VC

CT

PIN OUT TABLEPin Symbol Functional Description

Mounting Posts The mounting posts are provided for transceiver mechanical attachment to the circuit board. Theyshould not be connected to the circuit ground but can be connected to the chassis ground.

1 VEER Receiver Signal Ground2 VCCR Receiver Power Supply3 SD Signal Detect is a TTL output. A high level indicates a received optical signal4 RD- Receiver Data Inverted Differential Output5 RD+ Receiver Data Non-inverted Differential Output6 VCCT Transmitter Power Supply7 VEET Transmitter Signal Ground8 TX_BRST Transmitter Burst Control9 TD+ Transmitter Data Non-inverted Differential Input

10 TD- Transmitter Data Inverted Differential Input

WDM OPTICALSUBASSEMBLY

ELECTRICA L SU BA SSEM BLY

D RIV ER IC

QUANTIZERIC

DATA OUTDIFFEREVTIAL

SIGNAL DETECT OUT

DATA INDIFFERENTIAL

PREA M PIC

PINPHOTODIODE

LD TX_BRST

G-PON ONU Transceiver

Page 4 of 5Coretek Opto Corp. 1F,10 Industry E. Rd. IV., Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. 01/19/2010http://www.coretek.com.tw Tel:886-3-5787871 Fax:886-3-5645105 Version：C

TRANSMITTER OPERATING FUNCTION TABLE

Vcc TX_BRST Data Input Optical Power

Vcc<3.0V X X OFFHigh Yes ONHigh No OtherVcc>3.0VLow X OFF

X=Don’t careHigh=Logic High Level , Low = Logic Low LevelYes= Data Input, No = No Data Input

OFF = Optical Power is less than –45dBm

Other = Optical Power is less than +8dBm

TX_BRST

TD+/TD-

Optical OutputTON TOFF

Within 15% of steady state

H

L

RECOMMENDED CIRCUIT SCHEMATIC

VEER

VCCR

SD RD-

RD+

TD-

TD+

TX_BRST

VEET

VCCT

TXRX

L1/L2 = 1μHC1 = 4.7μFC2/C3 =0.1μFR1/R2 = 150ΩR3/R4 = 82ΩR5/R6 = 130Ω

50oZ

50oZ

50oZ

50oZ

100

G-PON ONU Transceiver

Page 5 of 5Coretek Opto Corp. 1F,10 Industry E. Rd. IV., Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. 01/19/2010http://www.coretek.com.tw Tel:886-3-5787871 Fax:886-3-5645105 Version：C

MECHANICAL DIMENSIONSUnits in mm

48

9.7

4.567.11

17.79 10 X ?0.5

7.12(1.78X 4)

10.16

4

13.6

19.45

?0.9, L 600±40

9/125 um SM FSC/A PC

12 M A X

All dimensions are ±0.1mm unless otherwise specified.

RECOMMENDED SFF HOST BOARD LAYOUTUnits in mm

Claim:CORETEK Opto Corp. reserves the right to make changes in the specification described hereinafter without prior notice.