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. This XFP LR transceiver module is widely used in applications such as Internet Service Provider (ISP) Fiber To The Home (FTTH) aggregation and backbone, Various Data Communication SONET OC‐192 /SDH, 1200‐SM‐LL‐L, Data Center networking for Ethernet and Fiber Channel SAN Networking and other optical links. The module features a highly reliable 1310nm DFB transmitter and PIN photo-detector into duplex LC optical connector. It compliant with the current XFP Multi-Source Agreement (MSA) Specification1. They comply with 10-Gigabit Ethernet 10GBASE-LR/LW per IEEE 802.3ae and 10G Fiber Channel. Digital diagnostics functions are available via a 2- wire serial interface, as specified in the XFP MSA. The transceiver is RoHS compliant and lead-free per Directive 2002/95/EC3.

• 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	3.3		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	‑6.5		0.5	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