Ascent Communication Technology

10G SFP+ DWDM 80 km

Ascent’s DWDM ITU Channel SFP+ transceivers are designed for use in 10-Gigabit Ethernet links with distances up to 80 km over single-mode fiber. These transceivers include a PIN photo detector diode and temperature stabilized DFB-EML transmitter. Digital diagnostic functions are available via an I2C interface. This module is designed for single-mode fiber and operates at a nominal wavelength of 100 GHz ITU Grid, C Band DWDM wavelength.

• Supports up to 11.3 Gb/s bit rates

• Up to 80 km transmission distance on SMF

• DWDM EML transmitter and APD receiver

• Metal enclosure, for lower EMI

• 2-wire interface with integrated digital diagnostic monitoring

• Hot-pluggable SFP+ footprint

• Specifications compliant with SFF 8472

• Compliant with SFP+ MSA with LC connector

• Single 3.3 V power supply

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	Ts	‑40	‑	85	°C
Relative Humidity	RH	5	‑	95	%
Power Supply Voltage	V_CC	‑0.3	‑	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	Top	0	‑	70	°C	SFPP‑AT‑LP‑DXX‑80
		‑40	‑	85	°C	SFPP‑AT‑LP‑DXX‑80A
Power Supply Voltage	V_CC	3.14	3.3	3.47	V
Data Rate	BR		10.3125		Gbps
Transmission Distance	TD			80	m
Coupled Fiber	Single‑mode fiber					9/125 µm SMF

Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Average Launched Power	PO	‑1		+4	dBm	1
Extinction Ratio	ER	8.2			dB
Center Wavelength	λ_C	λ_C‑0.1		λ_C+0.1	nm	2
Center Wavelength Spacing			100		GHz	2
Spectrum Bandwidth (‑20 dB)	σ			1.0	nm
SMSR		30			dB
Transmitter OFF Output Power	P_OFF			‑30	dBm
Transmitter and Dispersion Penalty	TDP			3.0	dB
Output Eye Mask	Compliant with IEEE 802.3ae
Receiver
Input Optical Wavelength	λ	1270		1610	nm
Receiver Sensitivity	R_SENS			‑23.0	dBm	3
Input Saturation Power (Overload)	P_SAT	‑6.0			dBm
Receiver Reflectance	Rrx			‑27	dB
LOS Assert	LOSA	‑35			dBm
LOS De‑Assert	LOSD			‑26	dBm
LOS Detect Hysteresis	Phys	0.5			dB

Notes:

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

2. λc refer to wavelength selection, and corresponds to approximately 0.8 nm.

3. Measured with conformance test signal for BER = 10^‑12@ 10.3125 Gbps, PRBS = 2³¹‑1, NRZ, optical source with worst ER, wavelength between 1528.77 nm and 1563.86 nm; back to back.

Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	Note
Supply Voltage	Vcc	3.14	3.3	3.46	V
Supply Current (Note 1)	Icc			450	mA	SFPP‑AT‑LP‑DXX‑80
Supply Current (Note 1)	Icc			550	mA	SFPP‑AT‑LP‑DXX‑80A
Transmitter
Input Differential Impedance	Rin		100		Ω	2
Single Ended Data Input Swing	Vin‑pp	180		700	mV
Transmit Disable Voltage	V_Dis	2.0		Vcc	V	3
Transmit Enable Voltage	V_EN	Vee		Vee+ 0.8	V
Transmit Disable Assert Time				10	µs
Receiver
Differential Data Output Swing	Vout‑pp	400		800	mV	4
LOS Output High Level	V_LOS‑H	2.0		V_CCHOST	V	5
LOS Output Low Level	V_LOS‑L	Vee		Vee+0.8	V	5