Ascent Communication Technology

10G SFP+ LR 1310 nm 20 km

ASCENT’s SFPP-ATLP-31-20 Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA).

• Up to 11.3 Gbps Data Links

• Up to 20 km transmission on SMF

• 1310 nm DFB Laser and PIN/TIA receiver

• Metal enclosure, for lower EMI

• 2-wire interface with integrated Digital Diagnostic monitoring

• Hot-pluggable SFP+ footprint

• Compliant with SFP+ MSA with LC connector

• Single 3.3 V power supply

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

• Power dissipation < 1.2 W

• 10GBASE-LR/LW & 10G Ethernet

• Compliant with SFF-8431

• Compliant with SFF 8472

• RoHS compliant

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	T_S	‑40		85	°C
Storage Ambient Relative Humidity	H_A	0		85	%
Power Supply Voltage	V_CC	‑0.5		4	V
Signal Input Voltage		‑0.3		Vcc+0.3	V
Receiver Damage Threshold		+3			dBm
Lead Soldering Temperature/Time	T_SOLD			260/10	°C/sec	1
Lead Soldering Temperature/Time	T_SOLD			360/10	°C/sec	2

Notes

1. Suitable for wave soldering.

2. Only for soldering by iron.

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Case Operating Temperature	T_case	0		70	°C
Ambient Humidity	H_A	5		70	%	Non‑condensing
Data Rate		10.3125/10.3125			Gbps	TX Rate/RX Rate
Transmission Distance				20	km
Coupled Fiber		Single‑mode fiber				9/125 µm G.652

Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Average Output Power	P_OUT	‑8.2		+0.5	dBm
Extinction Ratio	ER	3			dB
Center Wavelength	λ_C	1290	1310	1330	nm	DFB Laser
Side Mode Suppression Ratio	SMSR	30			dBm	DFB Laser
Spectrum Width (RMS)	σ			1	nm
Transmitter OFF Output Power	P_Off			‑30	dBm
Output Eye Mask	Compatible with IEEE 802.3ae
Receiver
Input Optical Wavelength	λ_IN	1260		1600	nm
Rx Sensitivity	R_SENS1			‑14.4	dBm	1
Rx Sensitivity (OMA)	R_SENS2			‑10.3	dBm	2
Input Saturation Power (Overload)	PSAT	‑3			dBm
Loss of Signal Assert	P_A	‑30			dBm
Loss of Signal De‑assert	P_D			‑15.4	dBm
LOS Hysteresis	P_D‑P_A	0.5		6	dB

Notes:

1. With worst‑case extinction ratio. Measured with a PRBS 2³¹‑1 test pattern, @10.3125 Gb/s, BER < 10^‑12.

2. Valid between 1260 nm and 1355 nm. Per IEEE 802.3ae.

Digital Diagnostic Memory Map

Digital Diagnostic Monitoring Information

Parameter	Unit	Accuracy
Case Temperature	°C	±3
Supply Voltage	V	±3%
Tx Bias Current	mA	±10%
Tx Optical Power	dB	±3
Rx Optical Power	dB	±3

Electrical Interface Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Supply Voltage	V_CC	3.13	3.30	3.47	V
Supply Current	I_CC		200	285	mA
Transmitter
Input Different Impedance	R_in	90	100	110	Ω	1
Single‑Ended Data Input Swing	V_in, pp	180		700	mV
Transmitter Disable Voltage	VDIS	2		VCC	V
Transmitter Enable Voltage	VEN	0		0.8	V
Receiver
Output Difference Impedance	R_out	90	100	110	Ω	1
Single‑Ended Data Output Swing	V_out, pp	300		850	mV	2
LOS Asserted	V_LOSA	2		VCCHOST	V	3
LOS De‑Asserted	V_LOSD	0		0.8	V	3