Ascent Communication Technology

FTTH – XPON

10G SFP+ LR 1310 nm 10 km

ASCENT SFPP-AT-LP-31-10 transceivers support the 2-wire serial communication protocol as defined in the SFP+ MSA.

• Up to 11.1 Gbps Data Links

• Up to 10 km transmission on SMF

• DFB Laser and PIN 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

• Case operating temperature range:0°C to 70°C

• Power dissipation < 1.5 W

• 10GBASE-LR/LW & 10G Ethernet

• Compliant to SFF-8431

• Compliant to SFF 8472

• RoHS compliant

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		Without air flow
Power Supply Voltage	VCC	3.14	3.3	3.47	V
Power Supply Current	ICC	‑		450	mA
Data Rate	BR		10.3125		Gbps
Transmission Distance	TD		‑	10	km
Coupled Fiber	Single‑mode fiber					9/125 µm SMF

Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	Note
Transmitter
Output Opt. Power	POUT	‑6		‑0.5	dBm	1
Optical Wavelength	λ	1260	1310	1355	nm
Spectral Width (‑20dB)	σ			1	nm
Optical Extinction Ratio	ER	3.5			dB
Output Eye Mask	Compliant with IEEE 802.3ae
Receiver
Rx Sensitivity	RSENS			‑14.4	dBm	2
Input Saturation Power (Overload)	Psat	0.5			dBm
Wavelength Range	λ_C	1270		1610	nm
LOS De‑Assert	LOSD			‑17	dBm
LOS Assert	LOSA	‑30			dBm
LOS Hysteresis		0.5	1.0		dB

Notes:

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

2. Measured with a PRBS 2³¹‑1 test pattern, @ 10.325 Gb/s, BER<10^‑12.

Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	Note
Supply Voltage	Vcc	3.14	3.3	3.46	V
Supply Current	Icc			450	mA
Transmitter
Input Differential Impedance	Rin		100		Ω	1
Single Ended Data Input Swing	Vin,pp	180		700	mV
Transmit Disable Voltage	VD	Vcc–1.3		Vcc	V
Transmit Enable Voltage	VEN	Vee		Vee+ 0.8	V	2
Transmit Disable Assert Time				10	us
Receiver
Differential Data Output Swing	Vout,pp	300		850	mV	3
Data Output Rise Time	tr	28			ps	4
Data Output Fall Time	tf	28			ps	4
LOS Fault	VLOS fault	Vcc–1.3		VccHOST	V	5
LOS Normal	VLOS norm	Vee		Vee+0.8	V	5
Power Supply Rejection	PSR	100			mVpp	6

Notes:

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

2. Or open circuit.

3. Into 100 Ωs differential termination.

4. 20 to 80 %.

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

6. 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.

Regulatory Compliance

Feature	Reference	Performance
Electrostatic discharge(ESD)	IEC/EN 61000‑4‑2	Compatible with standards
Electromagnetic Interference (EMI)	FCC Part 15 Class B EN 55022 Class B (CISPR 22A)	Compatible with standards
Laser Eye Safety	FDA 21CFR 1040.10, 1040.11 IEC/EN 60825‑1, 2	Class 1 laser product
Component Recognition	IEC/EN 60950, UL	Compatible with standards
ROHS	2002/95/EC	Compatible with standards
EMC	EN61000‑3	Compatible with standards