Ascent Communication Technology

10G SFP+ 850 nm 400 m

ASCENT SFPP-ATLP-85-04 transceivers support the 2-wire serial communication protocol as defined in the SFP+ MSA, 400m on MMF OM4. SFP+ transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, receiver optical power and transceiver supply voltage. It also defines a sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters are outside of a factory set normal range. The SFP+ MSA defines a 256-byte memory map in EEPROM that is accessible over a 2-wire serialinterface at the 8-bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8-bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged. The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDM) inside the transceiver, which is accessed through a 2-wire serial interface.

· Support multi-protocol from 8.5Gb/s to 11.3Gb/s

· Hot-Pluggable SFP+ footprint

· 850nm VCSEL Tocan laser transmitter

· Duplex LC connector

· Up to 300m links on MMF OM3, 400m on MMF OM4

· Single +3.3V Power Supply

· Power consumption<1W

· Compliant with SFF-8431 SFF-8432 and IEE802.3ae

· Operating temperature range:

Commercial: 0°C to +70°C

Industrial: -40°C to +85°C

· RoHS compliant (lead-free)

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	T_S	-40		+85	°C
Case Operating Temperature	T_A	0		70	°C
Supply Voltage	V_CC	-0.5		3.6	V
Industrial	T_C	-40		+85	°C
Commercial	T_C	0		70	°C

General

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Bit Rate	BR	9.95	10.3125	11.3	Gb/s	Bit Rate
Bit Error Ratio	BER	0		10-12		Bit Error Ratio
Supply Voltage	VCC	-0.5		3.6	V	Supply Voltage
Maximum Supported Distances(OM4)				400	m	Maximum Supported Distances(OM4)

Timing Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
TX_Disable Assert Time	t_off			10	us
TX_Disable Negate Time	t_on			1	ms
Time to Initialize Include Reset of TX_FAULT	t_int			300	ms
TX_FAULT from Fault to Assertion	t_fault			100	us
TX_Disable Time to Start Reset	t_reset	10			us
Receiver Loss of Signal Assert Time	T_A,RX_LOS			100	us
Receiver Loss of Signal Deassert Time	T_d,RX_LOS			100	us
Rate-Select Charge Time	t_ratesel			10	us

Electrical Characteristics (Condition: TOP =25°C)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Supply Voltage	Vcc	3.14		3.47	V
Supply Current	Icc			300	mA
Transmitter
Input Differential Impedance	R_in		100		Ω	1
Tx Input Single Ended DC Voltage Tolerance (RefVeeT)	V	-0.3		4	V
Differential Input Voltage Swing	Vin,pp	100		1000	mV	2
Transmit Disable Voltage	V_D	2		Vcc	V	3
Transmit Enable Voltage	V_EN	V_ee		+0.8	V
Receiver
Single Ended Output Voltage Tolerance	V	-0.3		4	V
Rx Output Diff Voltage	Vo	300		1000	mV
Rx Output Rise and Fall Time	Tr/Tf	30			ps	4
LOS Fault	V_{LOS fault}	2		V_ccHOST	V	5
LOS Normal	V_{LOS norm}	V_ee		+0.8	V	5

Notes:

1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.

2. Per SFF-8431 Rev 3.0

3. Into 100 ohms differential termination.

4. 20% to 80%

5. LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

Optical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Center Wavelength	λt	830	850	870	nm
RMS Spectral Width	△λrms			0.45	nm
Average Optical Power	Pavg	-6		-1	dBm	1
Optical Power OMA	P_oma		-1.5		dBm
Laser Off Power	Poff			-30	dBm
Extinction Ratio	ER	3.5			dB
Transmitter Dispersion Penalty	TDP			3.9	dB	2
Relative Intensity Noise	Rin			-128	dB/Hz	3
Optical Return Loss Tolerance		20			dB
Receiver
Center Wavelength	λr	830		870	nm
Receiver Sensitivity (OMA) @10.3Gb/s	Sen			-10.5	dBm	4
Stressed Sensitivity (OMA)	Sen_ST				dBm	4
Los Assert	LOS_A	-25			dBm
Los De-Assert	LOS_D			-12	dBm
Los Hysteresis	LOS_H	0.5			dB
Overload	Sat	-1			dBm	5