Ascent Communication Technology

10G SFP+ CWDM 80 km

ASCENT’s CWDM SFP+ transceivers are designed for use in 10-Gigabit Ethernet links with distances up to 80 km over single-mode fiber. These transceivers include an APD receiver and CWDM EML transmitter. Digital diagnostic functions are available via an I2C interface. This module is designed for single-mode fiber and operates at wavelengths between 1470 nm to 1610 nm.

• Up to 11.3Gbps Data Links

• Up to 80km transmission on SMF

• CWDM EML transmitter and APD receiver

• Metal enclosure for lower EMI

• 2-wire interface with integrated Digital Diagnostic monitoring

• Hot-pluggable SFP+ footprint

• Compliant with SFF 8472 and SFF 8431

• Compliant with SFP+ MSA with LC connector

• Single 3.3V power supply

• Commercial/Industrial case operating temperature range: 0 °C to +70 °C / -40 °C to +85 °C

• Without CDR (standard) or with CDR supported 9.95 Gb/s to 11.3Gb/s reference-free

• Low power dissipation

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	Ts	‑40	‑	85	°C
Relative Humidity	RH	5	‑	95	%
Power Supply Voltage	VCC	‑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	Tcase	0	‑	70	°C	Commercial
		‑40	‑	85	°C	Industrial
Power Supply Voltage	VCC	3.14	3.3	3.47	V
Power Supply Current	ICC	‑		450	mA
Data Rate	BR		10.3125	11.3	Gbps
Transmission Distance	TD		‑	80	km
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	λc	λc‑6.5		λc+6.5	nm	2
Spectrum Band Width (‑20dB)	σ			1.0	nm
SMSR		30			dB
Transmitter OFF Output Power	Poff			‑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	Psen			‑23.0	dBm	3
Input Saturation Power (Overload)	Psat	‑6			dBm
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. (Before of Life)

2. For λc refer to wavelength selection

3. Measured with conformance test signal for BER = 10^–¹² @ 10.3125 Gbps, PRBS = 2³¹‑1, NRZ, Optical source with worst ER, Wavelength between 1470 nm and 1610 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			430	mA	SFPP‑AT‑LP‑CXX‑80
				490	mA	SFPP‑AT‑LP‑CXX‑80A
				460	mA	SFPP‑AT‑LP‑CXX‑80C
				520	mA	SFPP‑AT‑LP‑CXX‑80CA
Transmitter
Input Differential Impedance	Rin		100		Ω	2
Differential Data Input Swing	Vin, pp	180		700	mV
Transmit Disable Voltage	V_Dis	2.0		Vcc	V
Transmit Enable Voltage	V_EN	Vee		Vee+ 0.8	V	3
Transmit Disable Assert Time				10	µs
Receiver
Differential Data Output Swing	Vout, pp	300		850	mV	4
Data Output Rise Time	tr	30			ps	5
Data Output Fall Time	tf	30			ps	5
LOS Output High Level	V_LOS‑H	2.0		V_CCHOST	V	6
LOS Output Low Level	V_LOS‑L	Vee		Vee+0.8	V	6