Ascent Communication Technology

SFPP AT AOC Cable

Ascent’s SFP+ Active Optical Cable (AOC) assemblies use active circuits to support longer distances than standard Passive or Active SFP+ Copper Cables. They are designed for high speed, short range data link via optical fiber wire. SFP+ AOC cables provide high performance Enhanced Small Form Factor Pluggable (SFP+) interface and it is a cost effective solution for Data Center/ storage and data application. The Active Optical Cables (AOC) can be used as an alternative solution to SFP+ passive and active copper cables, while providing improved signal integrity, longer distances, superior electromagnetic immunity and better bit error rate performance.

· Up to 10.3125Gbps Data Links

· 850nm VCSEL laser transmitter and PIN/TIA receiver

· Maximum link length of 150m on OM3 MMF

· Hot-pluggable SFP+ footprint

· Power consumption less than 1W

· RoHS compliant and lead-free

· Support Digital Diagnostic Monitor interface

· +3.3V Single power supply

· Commercial operating temperature: 0°C to +70°C

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ	Max.	Unit	Ref
Maximum Supply Voltage	V_CC	-0.5		3.6	V
Storage Temperature	T_S	-40		85	°C	1
Case Operating Temperature	T_OP	0		70	°C
Relative Humidity	RH	0		85	%	2

Notes:
1. Limited by the fiber cable jacket, not the active ends.
2. Non-condensing.

Electrical Characteristics (T_OP = 0 to 70°C, V_CC= 3.3 ± 5% Volts)

Parameter	Symbol	Min	Typ	Max	Unit	Ref
Supply Voltage	V_CC	3.15		3.45	V
Supply Current	I_CC			300	mA
Transmitter
Input Differential Impedance	Rin		100		Ω	1
Differential Data Input Wwing	V_in, pp	200		1000	mV
Transmit Disable Voltage	VD	2		V_CC	V
Transmit Enable Voltage	VEN	Vee		Vee+0.8	V
Receiver
Differential Data Output Swing	V_out, pp	200		100	mV	2
LOS Fault	VLOS_fault	2		V_CCHOST	V	3
LOS Normal	VLOS_norm	Vee		Vee+0.8	V	3
Power Supply Noise Tolerance	VCCT/VCCR	Per SFF-8431 Rev 4.1	mVpp	4

Notes:
   1.  Connected directly to TX data input pins.AC coupling from pins into laser driver IC.
2.  Into 100Ω differential termination
  3. 20-80%.Measured with Module Compliance Test Board and OMA test pattern. Use of four 1’s and four 0’s in sequence in the PRBS^9 is an acceptable alternative. SFF-8431 Rev 4.1
4.  LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V
5. Testing methodology per SFF-8431. Rev 4.1