Ascent Communication Technology

8.5G SFP+ SR 850 nm 150 m

Ascent’s SFPP-A8LP-85-015 transceivers are designed expressly for high-speed communication applications that require rates up to 8.5 Gb/s. They are designed to be compliant with the SFF-8472 SFP+ MSA. The module is suitable for data links up to 300 m in distance over multi-mode fiber.

• Up to 8.5 Gb/s Data Links

• Up to 300 m transmission on MMF

• Power dissipation < 1.0 W

• VSCEL laser and PIN receiver

• Metal enclosure, for lower EMI

• 2-wire interface with integrated Digital Diagnostic monitoring

• Hot-pluggable SFP+ footprint

• Compliant with SFF8472

• Compliant with SFP+ MSA with LC connector

• Compliant with Fiber Channel FC-PI-4 800-SM-LC-L

• Compliant with 8G, 4G, and 2G Fiber Channel

• RoHS compliant

• Single + 3.3V power supply

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Storage Temperature	Ts	‑40	‑	85	°C
Relative Humidity	RH	5	‑	95	%
Power Supply Voltage	V_CC	‑0.3	‑	4	V
Signal Input Voltage		V_CC‑ 0.3	‑	V_CC+ .3	V

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Case Operating Temperature	T_CASE	0	‑	70	°C	Commercial
	T_CASE	‑40	‑	85	°C	Industrial
Power Supply Voltage	V_CC	3.14	3.3	3.47	V
Power Supply Current	I_CC	‑	‑	360	mA
Data Rate	BR	‑	8.5	‑	Gbps
Transmission Distance	TD	‑	‑	300	km
Coupled Fiber	Multi‑mode fiber					50/125 µm SMF

Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter
Optical Output Power	P_OUT	‑6	‑	‑1	dBm	1
Optical Wavelength Range	λ	840	850	860	nm
Optical Extinction Ratio	ER				dB
RIN	RIN			‑128	dB/Hz
Output Eye Mask	Compliant with FC‑PI‑4
Receiver
Receiver Sensitivity	R_SEN	‑	‑	‑10	dBm	2
Input Saturation Power (Overload)	P_SAT	0.5	‑	‑	dBm
Wavelength Range	λ_C	770	850	860
LOS Assert	LOSA	‑	‑	‑14	dBm
LOS De‑assert	LOSD	‑30	‑	‑	dBm
LOS Detect Hysteresis	P_HYS	0.5	‑	‑	dB

Notes:

1. T Class 1 Laser Safety per FDA/CDRH and IEC‑825‑1 regulations.

2. Measured with a PRBS 231‑1 test pattern @8.5 Gb/s, BER<10‑12.

Electrical Characteristics

Parameter	Symbol	Min	Typ.	Max	Unit	Notes
Supply Voltage	V_CC	3.14	3.3	3.146	V
Supply Current	I_CC	‑	‑	300	mA
Transmitter
Input Differential Impedance	R_IN	‑	100	‑	Ω	1
Single‑Ended Data Input Swing	V_IN,PP	180	‑	700	mV
Transmit Disable Voltage	V_D	V_CC ‑ 1.3	‑	V_CC	V
Transmit Enable Voltage	V_EN	V_EE	‑	V_EE + 0.8	V	2
Transmit Disable Assert Time		‑	‑	10	µs
Receiver
Differential Data Output Swing	V_OUT,PP	300	‑	850	mVp‑p	3
Data Output Rise/Fall Time	tr/tf	28	‑	‑	ps	4
LOS Fault	VLOS_FAULT	V_CC‑ 1.3	‑	V_CCHOST	V	5
LOS Normal	VLOS_NORM	V_EE	‑	V_EE+ 0.8	V	5