SRC848XR1I000P2 [OPLINK]

Receiver with Clock Recovery;


型号：	SRC848XR1I000P2
厂家：	OPLINK COMMUNICATIONS INC.
描述：	Receiver with Clock Recovery
文件：	总4页 (文件大小：762K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

OC-48/STM-16 Receiver with Clock

Recovery

SRC48

Product Description

The SRC48 modules are receivers with internal clock recovery designed

to meet or exceed the SONET/SDH optical interface requirements at OC-

48/STM-16 (2.488 Gb/s) data rate. Three performance versions are avail-

able which are fully compliant with Short Reach, Intermediate Reach

and Long Reach speciﬁcations at 1300 nm and 1550 nm wavelength.

The receiver for the Short Reach and Intermediate Reach version uses

PIN photodiodes. For the Long Reach version, InGaAs avalanche photo-

diodes (APDs) are used to achieve high sensitivity. The Long Reach re-

ceiver features a low noise GaAs transimpedance IC with AGC capability

to provide an extremely wide dynamic range. A Phase Lock Loop (PLL)

circuit is included to perform the clock recovery function and resam-

pling of the data. Both DATA and CLOCK outputs are diﬀerential signals

designed to be AC-coupled into 50 ohm load. A TTL Signal Detect func-

tion which indicates loss of optical input and an analog Received Opti-

cal Power Monitor output ares also provided.

Features

 Fully compliant with SONET/SDH OC-48/STM-16

(2.5 Gb/s) speciﬁcations

All receiver modules can be operated with a single +5V supply. The op-

erating temperature range is -40°C to +85°C for the Short Reach and

Intermediate Reach version and 0°C to +70°C for the Long Reach ver-

sion. All receivers are housed in a 24-pin dual-in-line metal package

with ﬁber pigtail (single mode ﬁber for Long Reach version and 50/125

μm multimode ﬁber for Short Reach and Intermediate Reach versions).

The ﬁber pigtail is terminated with ST, FC or SC connector.

 Long Reach 1310 nm & 1550 nm as well as

Intermediate Reach and Short Reach

 Internal temperature-compensated High

Voltage APD Supply (Long Reach version)

 -40°C to +85°C Operating Temperature

(Intermediate Reach and Short Reach)

 24-pin DIP metal package

 FC, ST, SC-connectorized ﬁber pigtails

 Diﬀerential DATA & CLOCK interface

 TTL SIGNAL DETECT output

 Received Optical Power Monitor function

 Single +5 V supply

Absolute Maximum Ratings

Parameter

Symbol

Minimum

Maximum

Units

T_ST

Storage Temperature

- 40

+ 85

°C

“I”option (“SR”& “IR”only)

“H”option

- 40

+ 85

+ 70

- 5.0

+ 6.0

V_CC

Operating Case Temperature

T_OP

°C

P_{in, max}

V_CC

V_IN

Maximum Optical Input Power (“LR”only)

Supply Voltage

dBm

Input Voltage

Lead Soldering Temperature & Time

260°C, 10 sec

R3.2009.04.30

An Oplink Company

SRC48

(Over Operating Case Temperature.)

Receiver Performance Characteristics

Parameter

Symbol

Minimum

Typical

Maximum

Units

2.48832

- 500 ppm

2.48832

+ 500 ppm

Data Rate

2.48832

Gb/s

Short & Intermediate Reach

Long Reach

- 20.0

- 28.0

- 3.0

- 24.0

Receiver Sensitivity

(10^-10BER) ¹

P_min

dBm

- 31.0

Short Reach (SR)

- 1.0

Maximum Input Optical

Power (10^-10BER)¹

Intermediate Reach (IR)

Long Reach (LR)

P_max

2.0

- 8.0

- 6.0

Increasing Light Input

SR & IR

P_sd+

P_sd-

P_sd+

P_sd-

- 20.0

Decreasing Light Input

- 35.0

Signal Detect Thresholds

Signal Detect Hysteresis

Increasing Light Input

- 28.0

dBm

Decreasing Light Input

- 42.0

0.5

1.0

LR (P_infrom -28 dBm to -17 dBm)

IR & SR (P_infrom -20 dBm to 0 dBm)

Optical Power

Monitor Current

I_PM

µA/µW

0.8

Wavelength of Operation

Clock Sampling Point

Output Clock Jitter

1100

150

1600

250

0.01

T_CSP

CLK_J

200

UIrms

Jitter Tolerance & Transfer Function

compliant with ITU Recommendation G.958

¹Specified in Average Optical Input Power and measured at 2.48832 Gb/s and 1300 nm or 1550 nm wavelength with 2²³-1 PRBS.

Receiver Electrical Interface

Parameter

Symbol

Minimum

Typical

Maximum

Units

Supply Voltage

Supply Current

V_CCA’V_CCD

4.75

5.0

425

465

0.75

0.45

5.25

525

SR & IR

565

DATA

CLOCK

0.4

0.35

2.7

0.95

V_CCD

0.50

Output Voltage Swing

V_PP

Output HIGH Voltage (SIGNAL DETECT)

Output LOW Voltage (SIGNAL DETECT)

V_OH

V_OL

AC-coupled into 50 ohm load

Interface Circuit

1 µH coil or ferrite bead

(<0.1 ohm series resistance)

50 ohm line

DATA+

to 50 ohm load

0.022

+5V

23,24

100

0.01

50 ohm line

DATA-

to 50 ohm load

13,14

15,16

100

0.01

50 ohm line

CLK+

to 50 ohm load

0.001

SRC-48

NO CONNECTION

3 Kohm

CLK-

to 50 ohm load

+5V

0.01

SD+

2,4,7,8,11,12

17,18,19,20

SD -

Oplink Communications, Inc.

R3.2009.04.30

SRC48

Application Notes

The receiver converts the incident optical power to a entire operating temperature range.

photocurrent via a high performance P-I-N photodiode (Short

Both DATA and CLOCK outputs are diﬀerential signals designed

to be AC-coupled into 50 ohm load. Transmission lines are

recommended for best performance. The Signal Detect

circuit monitors the level of the incoming optical signal and

generates a logic LOW signal at the SIGNAL DETECT+ output

when insuﬃcient photocurrent is produced. No termination

resistor is required for the SIGNAL DETECT outputs.

and Intermediate Reach version) or an avalanche photodiode

(Long Reach version).The photocurrent can be monitored via

thevoltagedropacrossanexternalresistorconnectedbetween

PM and V_CC. The APD Bias Voltage is internally generated from

the +5 V supply by a low noise DC-DC converter. The APD

Bias Voltage is temperature compensated to ensure stable

operation over the entire operating temperature range.the

Optical Power Monitor Interface Circuit

Timing Diagram

External

Monitor Resistor

(about 3 Kohm)

T_CSP

DATA

PM (Pin 3)

APD/PIN

Current

Monitor

CLOCK

SRC-48

Typical Jitter Transfer Function

Typical DATA output Eye Pattern

Typical Jitter Tolerance Measurement

Oplink Communications, Inc.

R3.2009.04.30

SRC48

Package Outline

(Dimension in inches)

The pigtail length from the package

edge is 1.0 meter typical.

Pinout Assignments

FUNCTION

N/C (NO CONNECTION)

GND

FUNCTION

Related TX, RX &

V_CCA(V_CCANALOG)

SD - (SIGNAL DETECT -)

SD + (SIGNAL DETECT +)

GND

Transceiver Modules

STX-48: OC-48/STM-16 Transmiꢀer (24-pin DIP)

SRX-48: OC-48/STM-16 Receiver without Clock

Recovery (24-pin DIP)

DTR-2488-SM: OC-48/STM-16 Transceiver without

Clock Recovery (industry standard 1x9 package)

DTR-2488-SM2: OC-48/STM-16 Transceiver without

Clock Recovery (industry standard 2x9 package)

PM (optical Power Monitor)

GND

DATA OUTPUT -

DATA OUTPUT +

GND

DTC-48: OC-48/STM-16 Transceiver with Clock

Recovery (industry standard 2x9 package)

CLK - (CLOCK OUTPUT -)

CLK - (CLOCK OUTPUT +)

GND

V_CCD(V_CCDIGITAL)

GND

Ordering Information

SRC

Supply Voltage

Receivers

Wavelength

Temperature Range

Option

5V= 8

1100~1600nm PIN= R1

1100~1600nm APD= R2

-40 ~85˚C= I

0~70˚C= H

Pigtail FC= P1

Pigtail ST= P2

Pigtail SC= P3

Oplink Communications, Inc. reserves the right to make changes in equipment design or speciﬁcations without notice. Information supplied by Oplink Commu-

nications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Oplink Communications, Inc. for its use nor for any infringements

of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Oplink Communications, Inc.

R3.2009.04.30

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