Delta Electronics LC-155Bxxxxxxx User Manual

LC-155Bxxxxxxx

155Mbps, SFF LC Duplex Optical Transceiver Module for

Fast Ethernet, ATM, SONET/OC-3, SDH/STM-1

Features:

 Full Compliance with the Optical Performance

Requirements of the ATM 100Mbps and 100
Base-FX Version of IEEE 802.3u.

 Multi-Source 2×5 package styles with LC

Receptacle.

 Single 3.3V Power Supply.
 PECL Differential Inputs and Outputs.
 PECL (LC-155B2xxxxxx Series) or TTL

(LC-155B4xxxxxx Series) Receiver Signal
Detect Indicator.

 RoHS Compliance
 Wave Solder and Aqueous Wash Process

Compatible.

Description:

The LC-155Bxxxxxxx series are SFF (Small Form
Factor) optical transceiver modules designed
expressly for high-speed communication applications
that require rates of up to 155Mbps. They are all
compliant with the SONET/SDH standards.

The LC-155Bxxxxxxx transceivers are supplied in 2
×5 DIP package style with duplex LC connector and
are fully compliant with SFF Multi-Source Agreement
(MSA).

The LC-155Bxxxxxxx transceivers can meet Class-1
eye safety standard and effective distance depending
on ITU-T G.957 standard or power penalty.

The transmitter sections utilize 1310nm Edge Emitting
InGaAsP Laser Diode. This Laser Diode is packaged
in the optical subassembly portion of the transmitter
section. A custom silicon IC that converts differential
PECL logical signals into an analog LD driving current
drives it.

The receiver sections utilize InGaAs PIN photodiodes
coupled into a custom silicon trans-impedance
preamplifier IC. These are packaged in the optical
subassembly portion of receiver.

These PIN / Preamplifier combinations are coupled
into a custom quantizer IC which provides the final
pulse shaping for the logic output and the Signal
Detect function. The data output is differential. The
signal detect output is single-ended.

Application:

 Single-mode Fiber Backbone Links.
 Fast Ethernet and ATM Compatible.
 Single-mode Fiber Media Converter.

DELTA ELECTRONICS, INC.

http://www.deltaww.com

1

Jan., 2008

Rev.：0H

LC-155Bxxxxxxx

Absolute Maximum Ratings

Parameter
Storage Temperature Ts -40 85 ºC
Lead Soldering Temperature T
Lead Soldering Time t
Supply Volt age VCC 0 5 V

Symbol Min. Typ. Max. Unit Note

260 ºC

SOLD

10 Sec.

SOLD

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Unit Note
Data Rate 100 155.52 200 Mbps
Ambient Operating Temperature TA 0 70 ºC 1
Supply Volt age VCC 3.15 3.3 3.45 V

Note: See “Order Information” for detail

Electrical Characteristics

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Transmitter Data Input Voltage-Low VIL-VCC -1.81 -1.48 V
Transmitter Data Input Voltage-High VIH-VCC -1.16 -0.88 V
Transmitter Disable Input-Low V
Transmitter Disable Input High V

Receiver

Data Output Voltage-Low VOL-VCC -1.95 -1.62 V
Data Output Voltage-High VOH-VCC -1.045 -0.74 V
SD Output Voltage-Low V
SD Output Voltage-High V
SD Output Voltage-Low V
SD Output Voltage-High V

0 0.8 V

DISL

2 Vcc V

DISH

-VCC -1.95 -1.62 V

SDL

-VCC -1.045 -0.74 V

SDH

0 0.8 V

SDL

2 Vcc V

SDH

ECL Family

LVTTL

Optical Characteristics

（Data Rate = 155.52Mbps, PRBS=223-1, NRZ, 9/125um SMF）

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Supply Current Icc
Mean Launch Power Po
Optical Extinction Ratio E.R.

Center Wavelength
Spectral Width (RMS)

λ

σ

C

150

-15 -8

-5 0
9

1280 1310 1340 nm

7.7
3

Output Eye Diagram Compliant with ITU-T recommendation G. 957

Receiver

Supply Current Icc

Sensitivity PIN

Overload P

SAT

Signal Detect-Asserted PA

150

-31

-34

-8

-10

-31

-34
Signal Detect-DeAsserted PD -45 dBm
Signal Detect-Hysteresis PA-PD 0.5 dB

Note: The sensitivity should be tested at a BER of 1×10

NRZ, 2

23

-1 PRBS and E.R.=9dB.

-10

or better with an input signal consisting of 155Mbps,

mA

dBm

LC-155BxMxxxxx

dB

nm

LC-155BxMxxxxx

mA

dBm

LC-155BxMxxxxx

dBm

LC-155BxMxxxxx

dBm

LC-155BxMxxxxx

DELTA ELECTRONICS, INC.

http://www.deltaww.com

2

Jan., 2008

Rev.：0H

Pin Definition

Mask of the eye diagram for the optical transmit signal

LC-155Bxxxxxxx

PIN Symbol

1 GND Receiver Signal Ground
2 VccR Receiver Power Supply
3 SD Receiver Signal Detect (LVPECL or LVTTL)
4 RD(-) Receiver Data Out Inverted (LVPECL)
5 RD(+) Receiver Data Out Non-inverted (LVPECL)
6 VccT Transmitter Power Supply
7 GND Transmitter Signal Ground
8 TxDis Transmitter Disable
9 TD (+) Transmitter Data In Non-inverted (LVPECL)

10 TD (-) Transmitter Data In Inverted (LVPECL)

Pin Out Drawing

Functional description

DELTA ELECTRONICS, INC.

http://www.deltaww.com

3

Jan., 2008

Rev.：0H