Delta Electronics STM-16, OC-48-SDH User Manual

RoHS Compliant Multi-Rate CWDM SFP Transceiver for SONET OC-48/SDH STM-16 with DDM Function

FEATURES

Description

The LCP-2488 CWDM series are designed

for coarse wavelength division multiplexing

applications (CWDM) and hot pluggable SFP

transceiver modules that data rates up to 2.67Gb/s.

The LCP-2488 CWDM series are support OC-48/

STM-16 as well as 2x Fiber channel (2.125Gb/s),

GbE (1.25Gb/s) and 1x Fiber channel (1.062Gb/s).

The selectiveness of center wavelength has 1470,

1490, 1510, 1530, 1550, 1570, 1590, and 1610nm.

The LCP-2488 CWDM series are designed to

be compliant with SFF-8472 SFP Multi-source

Agreement (MSA) with digital diagnostic

monitoring functions: Temperature, V

optical power, TX laser bias current, and RX

received optical power.

The post-amplifier of the LCP-2488 CWDM

series also includes a Loss of Signal (LOS) circuit

that provides a TTL logic-high output when the

received optical level is below a preset LOS

Assert threshold.

, TX

CC

z Compliant with SFP Transceiver SFF-8472

MSA specification with internal calibration

z Multi-rate operation from 125 to 2670Mpbs z Single + 3.3V Power Supply and TTL Logic

Interface

z Uncooled DFB laser transmitter and APD

receiver

z Eight CWDM wavelength available z EEPROM with Serial ID Functionality z Laser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

z Duplex LC Connector interface

Applications

z ATM switches and routers

z SONET/SDH switch infrastructure

z xDSL applications

z Gigabit Ethernet

z Switch to Switch interface

z Switched backplane applications

z File server interface

Performance

z LCP-2488D4RxxR: 1470nm to 1610nm CWDM

DFB laser transmitter and APD receiver, 28dB

link budget

DELTA ELECTRONICS, INC.

1 Dec., 2006

Rev. 0E

www.deltaww.com

Absolute Maximum Ratings

Parameter Symbol Min. Typ. Max. Unit Note

Storage Temperature Ts -40 85 ºC Supply Voltage VCC 0 5 V

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Unit Note

Case Operating Temperature TC -5 70 ºC 1 Supply Voltage VCC 3.135 3.465 V Data Rate 2488 Mbps

Note 1: See order information

Electrical Characteristics

(VCC=3.3V ± 5%)

Parameter Symbol Min. Typ. Max. Unit Note

Total Supply Current LCP-2488D4RxxR LCP-2488D4RxxRH

I

CCT

LCP-2488D4RxxRT

Transmitter

Transmitter Differential Input Voltage VDT 0.5 2.4 V 1 Transmitter Disable Input-High V Transmitter Disable Input-Low V Transmitter Fault Pull up Resistor R Transmitter Fault Output-High V Transmitter Fault Output-Low V

2 VCC+0.3 V

DISH

Vee 0.8 V

DISL

TX_FAULT

TXFH

TXFL

4.7 10 k 2

2 VCC+0.3 V

Vee 0.8 V

Receiver

Receiver Differential Output Voltage VDR 0.35 2 V 3 Receiver LOS Load R LOS Output Voltage-High V LOS Output Voltage-Low V

4.7 10 k 2

RXLOS

2 VCC+0.3 V

LOSH

Vee 0.8 V

LOSL

Notes:

1. Internally AC coupled and terminated to 100Ohm differential load.

300 380 380

mA

2. Pull up to V

on host Board

CC

3. Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/

Deserializer.

2 Dec., 2006

Rev. 0E

DELTA ELECTRONICS, INC.

www.deltaww.com

Optical Characteristics

Transmitter

(V

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

CC

Parameter Symbol Min. Typ. Max. Unit Note

Output Optical Power (Avg.) P Optical Extinction Ratio ER 8.2 dB Center Wavelength

LCP-2488D4x47R LCP-2488D4x49R LCP-2488D4x51R LCP-2488D4x53R

λ

LCP-2488D4x55R LCP-2488D4x57R LCP-2488D4x59R LCP-2488D4x61R

Spectral Width (-20dB)

σ

Side-mode Suppression Ratio SMSR 30 Optical Rise/ Fall Time Relative Intensity Noise

t

RIN -120 dB/Hz

Jitter Generation Peak to Peak RMS

J

J Dispersion Penalty @ 80 km Output Eye Compliant with GR-253-CORE and ITU recommendation G.957

Receiver

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

(V

CC

Parameter Symbol Min. Typ. Max. Unit Note

Sensitivity (Avg.) @2.488Gbps PS Input Optical Wavelength

λ

LOS-Deasserted (Avg.) PA LOS-Asserted (Avg.) PD -40 dBm LOS-Hysteresis PA-PD 0.5 dB Overload P0 -9 dBm Reflectance r -27 dB

Notes:

1. These are unfiltered 20%~80% values.

23

-1 NRZ)

0 +5

1464.5

1484.5

1504.5

1524.5

C

1544.5

1564.5

1584.5

1604.5

1470 1490 1510 1530 1550 1570 1590 1610

1477.5

1497.5

1517.5

1537.5

1557.5

1577.5

1597.5

1617.5

dBm

nm

1 nm

150/200 psec 1

r/tf

PP

rms

23

-1 NRZ)

0.1

0.01

2.5

-28

dB

UI

dB

2

dBm 3, 4

1450 1620 nm

-28

dBm

2. SMF-28 fiber used. 80 km represents 1600ps/nm at 1610nm. Measured at 2.488 Gb/s with a

23

PRBS 2

-1 pattern at a BER<10

3. The sensitivity is provided at a BER of 1×10

2677Mb/s/OC-48/2X FC/GbE/1X FC/ OC-12/OC-3, 2

-10

4. 2.488 Gb/s BER<10

with PRBS 223-1. Does not include dispersion penalty.

-10

.

-10

or better with an input signal consisting of

23

-1 PRBS and ER=9dB.

3 Dec., 2006

Rev. 0E

DELTA ELECTRONICS, INC.

www.deltaww.com

1.25

1.00

0.75

0.25

Amplitude

0.00

-0.25

Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957

Mask of the eye diagram for the optical transmit signal

Recommend Circuit Schematic

Time

Mean level of logical “1”

Mean level of logical “0”

Protocol Vcc

Tx_Disable

Tx_Fault

Rx_LOS

VCC

SerDes ICProtocol IC

PLD / PAL

3.3V

RES1

100 Ohms*

3.3V

RES1 RES1 RES1

0.1uF10uF

RES1

RES1 = 4.7k to 10k Ohms

* Depands on SerDes IC used

1uH

0.1uF

Tx_Disable

Tx_Fault

TD +

TD -

VeeT

0.1uF10uF

RD +

RD -

Rx_LOS

VeeR

Mod_def 2

Mod_def 1

Mod_def 0

DELTA SFP Module

VccT

10k Ohms

0.01uF 100 Ohms

0.01uF

VccR

0.01uF

Laser Driver

Preamp & Quantizer

EEPROM

Laser Diode

Photo Diode

DELTA ELECTRONICS, INC.

4 Dec., 2006

Rev. 0E

www.deltaww.com

SFP Transceiver Electrical Pad Layout

Pin Function Definitions

Num.

1 VeeT Transmitter Ground 1 2 TX Fault Transmitter Fault Indication 3 Note 1

3 TX Disable Transmitter Disable 3

4 MOD-DEF2 Module Definition 2 3 Note 3, 2 wire serial ID interface 5 MOD-DEF1 Module Definition 1 3 Note 3, 2 wire serial ID interface 6 MOD-DEF0 Module Definition 0 3 Note 3, Grounded in Module 7 Rate Select Not Connect 3 Function not available 8 LOS Loss of Signal 3 Note 4

9 VeeR Receiver Ground 1 Note 5 10 VeeR Receiver Ground 1 Note 5 11 VeeR Receiver Ground 1 Note 5 12 RD- Inv. Received Data Out 3 Note 6 13 RD+ Received Data Out 3 Note 7 14 VeeR Receiver Ground 1 Note 5 15 VccR Receiver Power 2 3.3 ± 5%, Note 7 16 VccT Transmitter Power 2 3.3 ± 5%, Note 7 17 VeeT Transmitter Ground 1 Note 5 18 TD+ Transmit Data In 3 Note 8 19 TD- Inv. Transmit Data In 3 Note 8 20 VeeT Transmitter Ground 1 Note 5

Plug Seq.: Pin engagement sequence during hot plugging.

DELTA ELECTRONICS, INC.

Name Function

5 Dec., 2006

Plug Seq.

Notes

Note 2,Module disables on high or open

www.deltaww.com

Rev. 0E