Delta Electronics LCP-2488B4HDRx User Manual

RoHS Compliant SFP Transceiver for SONET OC-48/SDH STM-16 with Digital Diagnostic Monitoring Function

FEATURES

z Compliant with SFP Transceiver SFF-8472

MSA specification with internal calibration

z LCP-2488B4HDR compliant with Intra-office

SONET OC-48 / SDH STM-16 (I-16.1)

z Single + 3.3V Power Supply and TTL Logic

Interface

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

Description

The LCP-2488B4HDRx series are hot

pluggable 3.3V Small-Form-Factor transceiver

modules designed expressly for high-speed

communication applications that require rates up to

2.5Gb/s.

The LCP-2488B4HDRx 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-2488B4HDRx

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

Performance

Part number Link

budget

LCP-2488B4HDR 8dB 2km

Distance in

SMF

DELTA ELECTRONICS, INC.

1 2008/3/14

Rev. 0B

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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

Note 1: See order information

Electrical Characteristics

(VCC=3.3V ± 5%)

Parameter Symbol Min. Typ. Max. Unit Note

Total Supply Current ICCT 300 mA

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

Receiver

Receiver Differential Output Voltage VDR 0.35 1 2 V 3 Receiver LOS Load R LOS Output Voltage-High V LOS Output Voltage-Low V

Notes:

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

2 VCC+0.3 V

DISH

0 0.8 V

DISL

TX_FAULT

TXFH

TXFL

RXLOS

LOSH

LOSL

4.7 10 k 2

2 VCC+0.3 V

0 0.8 V

4.7 10 k 2

2 VCC+0.3 V

0 0.8 V

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 2008/3/14

Rev. 0B

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Optical Characteristics

Transmitter

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

(V

CC

Parameter Symbol Min. Typ. Max. Unit Note

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

Spectral Width

Optical Rise/ Fall Time Relative Intensity Noise Total Jitter (Peak to Peak)

λ

σ

t

r/tf

RIN -120 dB/Hz

TJ

Output Eye Compliant with GR-253 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.) PS Input Optical Wavelength

λ

LOS-Deasserted (Avg.) PA LOS-Asserted (Avg.) PD -45 dBm LOS-Hysteresis PA-PD 0.5 dB Overload P0 -3 dBm Reflectance r -12 dB

Notes:

1. These are unfiltered 20%~80% values

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

23

2

-1 PRBS and ER=9dB.

23

-1 NRZ)

-10 -3

C

1266 1310 1360 nm

dBm

4 nm

150/200 psec 1

50 ps

PP

23

-1 NRZ)

-18

dBm 2

1266 1310 1360 nm

-20

-12

or better with an input signal consisting of 2488Mb/s,

dBm

Mask of the eye diagram for the optical transmit signal

DELTA ELECTRONICS, INC.

1.25

1.00

0.75

0.25

Amplitude

0.00

-0.25

Time

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

Mean level of logical “1”

Mean level of logical “0”

3 2008/3/14

Rev. 0B

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SFP Transceiver Electrical Pad Layout

Pin Function Definitions

Pin Num. Name Function Plug Seq. Notes

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.

Note 2 Module disables on high or open

DELTA ELECTRONICS, INC.

4 2008/3/14

Rev. 0B

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