Ascent Communication Technology

10G XFP LR 1310 nm 10 km

ASCENT’s XFP-AT-LP-31-10 Small Form Factor 10 G (XFP) transceivers are designed for use in 10-Gigabit Ethernet links up to 10 km over single mode fiber.

• Hot-pluggable XFP footprint

• Supports 9.95 Gb/s to 11.3 Gb/s bit rates

• XFI Loopback Mode

• RoHS-6 Compliant (lead-free)

• Power dissipation < 2.0 W

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

• Maximum link length of 10 km

• DFB laser and PIN receiver

• Full Duplex LC connector

• No Reference Clock required

• Built-in digital diagnostic functions

• Standard bail release mechanism

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit
Maximum Supply Voltage	Vcc3	‑0.5		4.0	V
Storage Temperature	T_S	‑40		85	°C
Case Operating Temperature	T_case	0		70	°C

Electrical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Supply Voltage #2	Vcc3	3.13		3.45	V
Supply Current – Vcc3 Supply	Icc3			600	mA
Module Total Power	P			2.0	W	1
Transmitter
Input Differential Impedance	Rin		100		Ω	2
Differential Data Input Swing	Vin,pp	120		820	mV
Transmit Disable Voltage	VD	2.0		Vcc	V	3
Transmit Enable Voltage	VEN	GND		GND+ 0.8	V
Transmit Disable Assert Time				10	µs
Receiver
Differential data output swing	Vout,pp	340	650	850	mV	4
LOS Fault	VLOS fault	Vcc – 0.5		VccHOST	V	5
LOS Normal	VLOS norm	GND		GND+0.5	V	5

Notes:

1. Maximum total power value is specified across the full temperature and voltage range.

2. After internal AC coupling.

3. Or open circuit.

4. Into 100 Ω differential termination.

6. Loss Of Signal is open collector to be pulled up with a 4.7 kΩ to 10 kΩ resistor to 3.15 – 3.6V. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

Optical Characteristics

Parameter	Symbol	Min	Typ.	Max	Unit	Note
Transmitter
Average Optical Power	P_out	‑6		‑1	dBm
Optical Wavelength	λ	1290	1310	1330	nm
Side mode Suppression ratio	SMSR	30			dB
Optical Extinction Ratio	ER	3.5			dB
Average Launch Power of OFF Transmitter	P_OFF			‑30	dBm
Tx Jitter	Tx_j	Compliant with 802.3ae requirements
Receiver
Receiver Sensitivity	R_SEN			‑15	dBm	1
Input Saturation Power (Overload)	Psat	0.5			dBm
Wavelength Range	λ_C	1270		1610	nm
Receiver Reflectance	R_rx			‑14	dB
LOS De‑Assert	LOS_D			‑18	dBm
LOS Assert	LOS_A	‑32			dBm
LOS Hysteresis		0.5			dB

Notes:

1. Measured with BER < 10^‑12@ 10.3 Gbps, 2³¹ ‑ 1 PRBS.

General Specifications

Parameter	Symbol	Min	Typ	Max	Units	Note
Bit Rate	BR	9.95		11.3	Gb/s	1
Bit Error Ratio	BER			10^‑12		2
Max. Supported Link Length	LMAX			10	km	1

Notes:

1. 10GBASE‑LR/LW.

2. Tested with 10.3 Gbps, 2³¹ ‑ 1 PRBS.

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