SFP 1G BIDI

Description:

GOXS-BI3512-20

SFP, BIDI, 1.25G, 1310/1550NM,

20KM, SMF, DDM

Overview:

The SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/ 1.0625Gbps and 20km transmission distance with SMF. The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

Features:

Dual data-rate of 1.25Gbps/1.063Gbps operation

1310nm FP laser and PIN photo detector for 20km transmission

Compliant with SFP MSA and SFF-8472 with single LC receptacle

Digital Diagnostic Monitoring:

Internal Calibration or External Calibration

Compatible with SONET OC-24-LR-1

Compatible with RoHS

+3.3V single power supply

Operating temperature: Standard : -5 to +70 degree

Industrial : -40 to +85 degree

Application:

Gigabit Ethernet

Fiber Channel

Switch to Switch interface

Switched backplane applications

Router/Server interface

Other optical transmission systems

Absolute Maximum Ratings:

Parameter	Symbol	Min	Max	Unit
Supply Voltage	Vcc	-0.5	4.5	V
Storage Temperature	Ts	-40	+85	°C
Operating Humidity	-	5	85	%

Operating Conditions:

Parameter	Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Standard	Tc	-5		+70	°C
	Industrial		-40		+85	°C
Power Supply Voltage		Vcc	3.13	3.3	3.47	V
Power Supply Current		Icc			300	MA
Data Rate				1.25		Gbps

Optical and Electrical Characteristics:

Parameter	Symbol	Min	Typical	Max	Unit	Notes
		Transmitter
Centre Wavelength	Ac	1260	1310	1360	nm
Spectral Width (-20dB)	AA			4	nm
Side Mode Suppression Ratio	Pout	-9		-2	dBm	1
Average Output Power	ER	9			dB
Extinction Ratio	tr/tf			0.26	ns
Optical Rise/Fall Time (20%~80%)	VIN	400		1800	mV	2
Data Input Swing Differential	ZIN	90	100	110	O
TX Disable Disable		2.0		Vcc	V
Enable		0		0.8	V
TX Fault Fault		2.0		Vcc	V
Normal		0		0.8	V
		Receiver
Centre Wavelength	1c	1530		1570	nm
Receiver Sensitivity				-23	dBm	3
Receiver Overload		-3			dBm	3
LOS De-Assert LOSD				-24	dBm
LOS Assert LOSA	-35				dBm
LOS Hysteresis		1		4	dB
Data Output Swing Differential	Vout	370		1800	mV	4
LOS	High	2.0		Vcc	V
	Low			0.8	V

Notes:

1. The optical power is launched into SMF.

2. PECL input, internally AC-coupled and terminated.

3. Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12.

4.Internally AC-coupled

Timing and Electrical:

Parameter	Symbol	Min	Typical	Max	Unit
Tx Disable Negate Time	t_on			1	ms
Tx Disable Assert Time	t_off			10	µs
Time To Initialize, including Reset of Tx Fault	t_init			300	ms
Tx Fault Assert Time	t_fault			100	µs
Tx Disable To Reset	t_reset	10			µs
LOS Assert Time	t_loss_on			100	µs
LOS De-assert Time	t_loss_off			100	µs
Serial ID Clock Rate	f_serial_clock			400	KHz
MOD_DEF (0:2)-High	VH	2		Vcc	v
MOD_DEF (0:2)-Low	VL			0.8	v

Diagnostics:

Parameter	Symbol	Min	Typical	Max
Temperature	-5 to +70	°C	±3°C	Internal / External
	-40 to +85
Voltage	3.0 to 3.6	V	±3%	Internal / External
Bias Current	0 to 100	mA	±10%	Internal / External
TX Power	-9 to -2	dBm	±3dB	Internal / External
RX Power	-23 to -3	dBm	±3dB	Internal / External

PIN Descriptions:

Pin	Signal Name	Description	Plug Seq.	Notes
1	VEET	Transmitter Ground	1
2	TX FAULT	Transmitter Fault Indication	3	Note 1
3	TX DISABLE	Transmitter Disable	3	Note 2
4	MOD_DEF(2)	SDA Serial Data Signal	3	Note 3
5	MOD_DEF(1)	SCL Serial Clock Signal	3	Note 3
6	MOD_DEF(0)	TTL Low	3	Note 3
7	Rate Select	Not Connected	3
8	LOS	Loss of Signal	3	Note 4
9	VEER	Receiver ground	1
10	VEER	Receiver ground	1
11	VEER	Receiver ground	1
12	RD-	Inv. Received Data Out	3	Note 5
13	RD+	Received Data Out	3	Note 5
14	VEER	Receiver ground	1
15	VCCR	Receiver Power Supply	2
16	VCCT	Transmitter Power Supply	2
17	VEET	Transmitter Ground	1
18	TD+	Transmit Data In	3	Note 6
19	TD-	Inv. Transmit Data In	3	Note 6
20	VEET	Transmitter Ground	1

Notes:
Plug Seq.: Pin engagement sequence during hot plugging.
1) TX Fault is an open collector output, which should be pulled up with a 4.7k-10k resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; Logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.
2) TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7k-10k resistor. Its states are:
Low (0 to 0.8V):
(>0.8V, < 2.0V):
High (2.0 to 3.465V): Open:
Transmitter on
Undefined
Transmitter Disabled Transmitter Disabled
3) Mod-Def 0, 1, 2. These are the module definition pins. They should be pulled up with a 4.7k~10k resistor on the host board. The pull-up voltage shall be VccT or VccR. Mod-Def 0 is grounded by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID
4) LOS is an open collector output, which should be pulled up with a 4.7k~10k resistor. Pull up voltage between 2.0V and Vcc+0.3V. Logic 1 indicates loss of signal; Logic 0 indicates normal operation. In the low state, the output will be pulled to less than 0.8V.
5) RD-/+: These are the differential receiver outputs. They are internally AC-coupled 100 differentia lines which should be terminated with 1000 (differential) at the user SERDES.
6) TD-/+: These are the differential transmitter inputs. They are internally AC-coupled, differential lines with 1000 differential termination inside the module

Ordering Information:

Part Number	Product Description
GOXS-BI3512-20	1310nm/1550nm, 1.25Gbps, LC, 20km, -5 ~ +70 degree, with DDM
GOXS-BI3512-20IND	1310nm/1550nm, 1.25Gbps, LC, 20km, -40 ~ +85 degree, with DDM

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