40G QSFP+ 10km PSM4 Transceivers

The FTCQ-4X-PSMLR4-GC&FTCQ-4X-PSMLR4I-GC QSFP+ PSM4 optical transceiver is intended for up to 10km reach service with four-lane 10.3125G data rate. It is based on 3.3V DC power supply and operates in the temperature range. It is compliant with QSFP MSA、SFF-8436 and IEEE802.3ba-2018. Digital diagnostic functions are available via I2C interface，and the control functions can be achieved by LVTTL interfaces on the host, mainly including Module Select(ModSelL)、Module Reset(ResetL)、Low Power Mode(LPMode). The transceiver incorporates a four-laser array which is usually DFB 、four-PIN diode array 、an integrated four drivers and TIAs IC separately. The differential AC coupled Tx and Rx data interfaces are CML compatible.

Applications

• 40G BASE Ethernet
• Infiniband EDR interconnects
• Enterprise networking

Features

• MPO-12 optical interface
• Maximum link length upto10km
• Upto 10.3125Gb/s data linksper lane
• +3.3 V power supply
• QSFPMSA compliant package
• Hot Pluggable
• High performance singal modeDML transmitter
• High sensitivity PIN/TIA optical receiver
• Single Mode operation
• Case Operating temperature: 0 to 70ºC, -40to +85 ºC
• Data and Control Interfaces
• Tx DataCML/AC Coupled
• Rx DataCML/AC Coupled
• ModSelL  LVTTL
• ResetL LVTTL
• ModPrsL LVTTL
• LPModeLVTTL
• 2-wire I2C communicationbus
• RoHS 6 compliance

Absolute maximum parameters

Absolute Maximum Ratings (EXCEEDING THESE RATINGS MAY CAUSE IRREVERSIBLE DAMAGE TO THE DEVICE)
Parameter	Symbol	Min	Max	Units	Notes
Storage Temperature	Tstg	-40	+95	ºC	Exceeding the absolute maximum ratings may cause irreversible damage to the device.The device is not intended to be operated under the condition of simultaneous absolutemaximum rat- ings, which may cause irreversible damage to the device.
Case Operating Temperature	TO	0	70	ºC
		-40	+85
Relative Humidity – Storage	RHS	0	95	%
Relative Humidity – Operating	RHO	0	85	%
Supply Voltage	VCC	-0.3	3.6	V

Operating conditions

Recommended Operating Conditions
Parameter	Symbol	Min	Typ	Max	Units	Notes
Case Operating Temperature	Tcase	0	–	+70	ºC
		-40	–	+85
DC Supply Voltage	VCC	3.135	–	3.465	V
Module Supply Current	Iin	–	–	1060	mA

Electrical Characteristics

Transmitter Electrical Characteristics
Parameter		Symbol	Mi	Typ	Max	Units		Notes
Differential Data input Swing		Vin	180	–	900	mV
Tx Differential Input Impendence		Zin	90	100	110	Ω
Tx Differential Output Impendence		Zout	45	50	55	Ω
ResetL Disable Voltage		Vr	2.0	–	Vcc+0.3	V
ResetL Enable Voltage		VrEN	0	–	0.8	V
ModSelL Disable Voltage		Vm	2.0	–	Vcc+0.3	V
ModSelL Enable Voltage		VmEN	0	–	0.8	V
Receiver Electrical Characteristics
Parameter	Symbol		Min	Typ	Max	Units	Notes
Differential Data Output Swing	Vout		180	–	900	mV
Rx Differential Output Impendence	Zout		90	100	110	Ω
IntL Assert Voltage	VInt		VCC-0.5	–	VCC+0.3	V
IntL De-assert Voltage	VDInt		0	–	+0.4	V

Optical Specification

Transmitter Optical Specification
Parameter	Symbol	Min	Typ	Max	Units	Notes
Signal Rate|Each Lane			10.3125±100ppm		Gbps
Lane Wavelength	L0	1295	1310	1325	nm
	L1	1295	1310	1325	nm
	L2	1295	1310	1325	nm
	L3	1295	1310	1325	nm
Side Mode Suppression Ratio	SMSR	30			dB
Average Launch Power|Each Lane	Pavg	-6		4	dBm
Optical Modulation Amplitude|Each Lane	OMA			4.5	dBm	1
Transmitter and dispersion penalty|Each Lane	TDP			2.6	dB
Eye Mask coordinates:X1, X2, X3, Y1, Y2, Y3		{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}
Average launch power of OFF transmitter|Each Lane				-30	dBm
Extinction Ratio	ER	3.5			dB
Spectral Width|20dB				1	nm
Transmitter Reflectance				-12	dB
Optical return loss tolerance				20	dB

Note:1. Even if the TDP < 0.8dB, the OMA min must exceed the minimum value specified here.

Receiver Optical Specification
Parameter	Symbol	Min	Typ	Max	Units	Notes
Signal Speed Per Lane			10.3125±100ppm		Gbps
Lane Wavelength	L0	1295	1310	1325	nm
	L1	1295	1310	1325	nm
	L2	1295	1310	1325	nm
	L3	1295	1310	1325	nm
Damage threshold|Each Lane	THd	5			dBm	1
Average Receive Power|Each Lane		-12.6		4	dBm
Receiver reflectance				-26	dB
Sensitivity  OMA|Each Lane[1]	Sen1			-12	dBm	2
Stressed Receiver Sensitivity(OMA), each Lane				-8.6	dBm
LOS Assert	LOSA	-30	–		dBm
LOS Deassert	LOSD			-17	dBm
LOS Hysteresis	LOSH	0.5		5	dB
Vertical Eye Closure Penalty	VECP	1.9			dB	3
Stressed Eye J2 Jitter	J2	0.3			UI
Stressed Eye J4 Jitter	J4	0.47			UI

Note:
1. The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical input signal having this power level on one lane. The receiver does not have to operate correctly at this input power.
2. Measured with conformance test signal at receiver input for BER = 1e-12 .
3. Vertical eye closure penalty and stressed eye jitter are test conditions for measuring stressed receiver sensitivity. They are not characteristics of the receiver.

Mechanical Dimensions

Ordering Code

Ordering Information
Part Number	Case Operating Temperature
FTCQ-4X-PSMLR4-GC	0 to 70 ºC
FTCQ-4X-PSMLR4I-GC	-40 to +85 ºC

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