JFOPT SFP28 25G 850nm 100米 SR LC DX光模块 - 符合SFF标准的短距多模收发器

产品型号	JFTSM-SFP28-25-85-01(SR)-LCD	工厂品牌	JFOPT嘉富
封装形式	SFP28	光口类型	LC 双联
最高总速率	25.78G	每通道速率	10.31Gbps
OM3最大传输距离	70m	OM4最大传输距离	100m
工作波长	850nm	工作电压	3.3V
光纤型号	MMF	纤芯尺寸	50/125
发射器类型	VCSEL	接收器类型	PIN
发射功率	-8.4~2.4dbm	接收灵敏度	＜-6dBm
数字诊断(DOM)	YES	接收过载	2.4dBm
功耗	≤1W	支持协议	SFF-8472, SFF-8024, SFF-8431, SFF-8432
工作温度(商业级)	0℃~+70℃	储存温度（商业级）	-40℃~+85℃
工作温度(工业级)	-40℃~+85℃	储存温度（工业级）	-40℃~+85℃

生产线介绍

PRODUCTION LINE INTRODUCTION

JFOPT嘉富持续投入光模块生产领域，产品覆盖1*9、SFP、10G、25G、100G、200G、400G、800G GPON/EPON/XG/XGSPON OLT等全系列光模块。同时为下游同行提供TOSA、ROSA、BOSA等光器件半成品解决方案。JFOPT嘉富生产线具备日产量一万只光模块、两万只光器件的能力。此外，JFOPT嘉富光模块拥有业界领先的耐高温、抗干扰特性，广泛应用于计算中心、运营商、交通安防、电力设施等行业领域。

产品介绍

PRODUCT PRESENTATION

JFOPT SFP28 25G 850nm 100m SR LC DX光模块专为多模光纤上的25.78Gbps数据传输而优化设计，完全符合SFF-8431标准，其SFP+机械结构兼容SFF-8432规范。该模块支持通过双线串行接口实现数字诊断监控功能（遵循SFF-8472标准），从而确保精准的性能监测并简化网络管理。

光模块系列产品

TRANSCEIVER SERIES PRODUCTS

生产及检测设备

PRODUCTION & TESTING EQUIPMENT

产品特点

FEATURES

Supports 25.78Gb/s bit rate					Hot-pluggable SFP+ footprint
850nm VCSEL laser and PIN photo-detector					Internal CDR on transmitter and receiver channel
Programmable RX pre-emphasis					Programmable TX input equalizer
0℃ to 70℃ operating temperature range					Link lengths at 25.78G 100m over OM4 MMF
Single +3.3V±5% power supply

应用范围

APPLICATION

25GBASE-SR ethernet

符合标准

STANDARD COMPLIANCE

绝对最大额定值

ABSOLUTE MAXIMUM RATINGS

Parameter	Symbol	Min.	Max.	Unit
Supply voltage	Vcc	-0.3	+4.0	V
Storage temperature	Ts	-40	+85	℃
Operating humidity	RH	0	+85	%

一般规范

GENERAL SPECIFICATIONS

Parameter	Symbol	Min	Typ.	Max	Unit
Bit rate	BR	-	25.78	-	Gbps
Bit Error ratio	BER	-	-	5*10E-5	-
Max. supported link length	LMax	-	-	100	m

建议操作条件

RECOMMENDED OPERATING CONDITIONS

Parameter	Symbol	Min.	Typ.	Max.	Unit
Operating temperature	Tc	0	-	+70	°C
Power supply voltage	Vcc	3.1	3.3	3.46	V
Bit rate	BR	-	25.78	-	Gbps
Max. supported link length	LMAX	-	-	100	m

电气特性

ELECTRICAL CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max	Unit	Note
Supply voltage	Vcc	3.14	3.3	3.46	V	-
Supply current	Icc	-	-	230	mA	-
Transmitter
Input differential impedance	RIN	80	100	120	Ω	1
Single ended data input swing	VIN	90	-	150	mVp-p	-
Transmit disable voltage	VDIS	2	-	VCCHOST	V	-
Transmit enable voltage	VEN	VEE	-	VEE+0.8	V	-
Transmit fault assert voltage	VFA	2	-	VCCHOST	V	-
Transmit fault de-assert voltage	VFDA	VEE	-	VEE+0.8	V	-
Receiver
Single ended data output swing	VOD	200	-	500	mVpp	-
LOS fault	VLOSFT	2	-	VCCHOST	V	-
LOS normal	VLOSFT	VEE	-	VEE+0.8	V	-

光学特性

OPTICAL CHARACTERISTICS

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Nominal wavelength	λ	840	-	860	nm	-
Spectral width	∆λ	-	-	0.6	nm	-
Optical modulation amplitude	POMA	-6.4	-	3	dBm	-
Optical output power	POFF	-8.4	-	2.4	dBm	-
Extinction ratio	ER	2	-	-	dB	-
Transmitter dispersion penalty	TDP	-	-	5	dB	-
Average launch power of OFF Transmitter	POFF	-	-	-30	dBm	-
Receiver
Center wavelength	λ	840	-	860	nm	-
Average receiver power	PAVG	-10.3	-	2.4	dBm	1
Stressed receiver sensitivity(OMA)	RSENSE	-	-	-5.2	dBm	2
Receiver reflectance	RREFL	-	-	-12	dB	-
Assert LOS	LOSA	-30	-	-	dBm	-
De-assert LOS	LOSD	-	-	-13	dBm	-
LOS hysteresis	0.5				dB	-
Notes: 1. Sensitivity for 25.78G PRBS 231-1 and BER better than or equal to 5*10E-5. 2. The stressed sensitivity values in the table are for system level BER measurements which include the effects of CDR circuit.

引脚分配

PIN ASSIGNMENT

Pin Number	Symbol	Name	Description
1,17,20	VeeT	Transmitter signal ground	These pins should be connected to signal groundon the host board.
2	TX fault	Transmitter fault out (OC)	Logic “1” output = Transmitter fault Logic “0” output = Normal operation This pin is open collector compatible, and should be pulled up to host Vcc with a 10kΩ resistor.
3	TX disable	Transmitter disable in (LVTTL)	Logic “1” input (or no connection) = Laser off Logic “0” Input = Laser on This pin is internally pulled up to VccT with a 10 kΩ resistor
4	SDA	Module definition identifiers	Serial ID with SFF 8472 diagnostics module definition pins should be pulled up to Host Vcc with 10 kΩ resistors.
5	SCL
6	MOD-ABS
7	RS0	Receiver rate select (LVTTL) Transmitter rate select (LVTTL)	NA
9	RS1		NA
8	LOS	Loss of signal out (OC)	This pin is open collector compatible, and should be pulled up to host Vcc with a 10kΩ resist
10,11,14	VeeR	Receiver signal ground	These pins should be connected to signal groundon the host board.
12	RD-	Receiver negative DATA out (CML)	Light on = logic “0” output receiver DATA output is internally AC coupled and series terminated with a 50Ω resistor.
13	RD+	Receiver positive DATA out(CML)	Light on = Logic “1” output receiver DATA output is internal ly AC coupled and series terminated with a 50 Ω resistor.
15	VccR	Receiver power supply	This pin should be connected to a filtered +3.3V power supply on the host board. See figure 3.recommended power supply filter
16	VccT	Transmitter power supply	This pin should be connected to a filtered +3.3V power supply on the host board. See figure 3.recommended power supply filter
18	TD+	Transmitter positive DATA in(CML)	Logic “1” input = light on transmitter DATA inputs are internally AC coupled and terminated with a differential 100Ω resistor.
19	TD-	Transmitter negative DATA in(CML)	Logic “0” input = light on transmitter DATA inputs are internally AC coupled and terminated with a differential 100Ω resistor.

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