SFP28 25G LR - ACTIVE PRODUCTS - Accelight Technologies, Inc.

Product Features

Data rate up to 24.33Gbps and 25.78 Gbps with CDR Engaged mode

Data rate up to 9.95Gbps and 10.31Gbps with CDR Bypassed mode

1310nm DFB laser

Maximum link length of 10km using single mode fiber

Electrically hot-pluggable

Digital diagnostic monitoring

Compliant with SFP+ MSA with LC connector

Case operating temperature range: -40°C to 85°C

Single 3.3V power supply with power dissipation < 1.2W

Applications

CPRI Option 10

25GbE

10GbE optical links

Standards

SFP+ MSA SFF-8431

SFF-8472

RoHS Compliant

Order information

Part Number	Laser	Distance	Interface	Temp	DDMI	Note
ASP025I01310010	1310nm DFB	10km	LC	I-temp	Yes

Performance Specifications

Absolute Maximum Rating

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	Ts	-40	-	100	ºC
Relative Humidity	RH	5	-	95	%
Power Supply Voltage	VCC	-0.5	-	4	V
Signal Input Voltage		Vcc-0.3	-	Vcc+0.3	V

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Case Operating Temperature	Tcase	-40	-	85	ºC	Industrial
Power Supply Voltage	VCC	3.135	3.3	3.465	V
Power Supply Current	ICC	-		454	mA
Data Rate	BR			25.78	Gbps

Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit
Transmitter
Average Launched Power	POUT	-1		4	dBm
Center Wavelength	λc	1295	1310	1325	nm
SMSR		30			dB
Optical Extinction Ratio	ER	3			dB
Spectral Width (-20dB)	s			1	nm
Transmitter and Dispersion Penalty	TDP			2.7	dB
Output Eye Mask	Compliant with IEEE 802.3ae
Receiver
Wavelength Range	λ	1295		1325	nm
Receiver Sensitivity@9.953 Gb/s	RSENS			-12	dBm
Receiver Overload(OMA)	Pmax				dBm
Receiver Reflectance	Rrx	2			dBm
LOS De -Assert	LOSD			-15	dBm
LOS Assert	LOSA	-30			dBm

Notes:

1. Launched power (avg.) is power coupled into a single mode fiber with master connector.

2. lc refer to the selected wavelength as listed in the wavelength selection table.

3. Measured at 1528~1600nm,ER>8.2dBm, PRBS 231-1 and BER better than or equal to 10E-12; Measured with 80km transport

4. Measured at 1528~1600nm,ER>8.2dBm, PRBS 231-1 and BER better than or equal to 10E-12; Measured with 80km transport.

Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit
Transmitter
CML Inputs	Vin	200		900	mVpp
Input impedance	Zin		100		ohms
Transmit Disable Voltage		2		Vcc+ 0.3	V
Receiver
CML Output	Vout	300		1000	mV
LOS output high level	VLOS-H	2.0		Vcc+0.3	V
LOS output low level	VLOS-L	-0.3		0.8	V

Notes:

1. Measured with receive Pin=Psen, Vcc=3.3V, operation temperature range without air flow.

2. Connected directly to TX data input pins. AC coupled thereafter.

3. Or open circuit.

4. Into 100 ohms differential termination.

5. These are unfiltered 20-80% values

6. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

7. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the recommended power supply filtering network.

Pin Assignment

Figure 1 Pin out of connector block on host board.

Pin	Symbol	Name/Description	NOTE
1	V EET	Transmitter Ground (Common with Receiver Ground)	1
2	T FAULT	Transmitter Fault.	2
3	T DIS	Transmitter Disable. Laser output disabled on high or open.	3
4	SDA	2-wire Serial Interface Data Line	4
5	SCL	2-wire Serial Interface Clock Line	4
6	MOD_ABS	Module Absent. Grounded within the module	4
7	RS0	Rate Select 0	5
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	6
9	RS1	No connection required	1
10	V EER	Receiver Ground (Common with Transmitter Ground)	1
11	V EER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver Non-inverted DATA out. AC Coupled
14	V EER	Receiver Ground (Common with Transmitter Ground)	1
15	V CCR	Receiver Power Supply
16	V CCT	Transmitter Power Supply
17	V EET	Transmitter Ground (Common with Receiver Ground)	1
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled.
19	TD-	Transmitter Inverted DATA in. AC Coupled.
20	V EET	Transmitter Ground (Common with Receiver Ground)	1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. TFAULT is an open collector/drain output, which should be pulled up with a 4.7kΩ– 10 kΩ resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V.A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.

3. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

4. Should be pulled up with 4.7kΩ- 10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls linelow to indicate module is plugged in.

5. LOS is open collector output. It should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Mechanical Specification