AB-GE-160 -

Alpha Bridge AB-GE-160 Datasheet

Features

Dual data-rate of 25Gbps/1.063Gbps operation
1550nm DFB laser and APD photodetector for 160km transmission
Compliant with SFP MSA and SFF-8472 with duplex 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 case temperature:
Standard : 0 to +70°C Extended : -40 to +85°C

Applications

Gigabit Ethernet
Fiber Channel
Switch to Switch interface
Switched backplane applications
Router/Server interface
Other optical transmission systems

Description

The SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 160km transmission distance with SMF.

The transceiver consists of three sections: a DFB laser transmitter, a APD 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.

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	%

Recommended Operating Conditions

Parameter		Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Standard			0		70
Operating Case Temperature	Extended	Tc	-20		85	°C
Power Supply Voltage			Vcc	3.13	3.3	3.47
Power Supply Current			Icc			300
Data Rate	Gigabit Ethernet				1.25
Data Rate	Fiber Channel			1.063		Gbps

Optical and Electrical Characteristics

Parameter		Symbol	Min	Typical	Max	Unit	Notes
Transmitter
Centre Wavelength		λc	1520	1550	1580	nm
Spectral Width (-20dB)		∆λ			1	nm
Average Output Power		Pout	0		5	dBm	1
Extinction Ratio		ER	9			dB
Optical Rise/Fall Time (20%~80%)		tr/tf			0.26	ns
Data Input Swing Differential		VIN	400		1800	mV	2
Input Differential Impedance		ZIN	90	100	110	Ω
TX Disable	Disable		2		Vcc	V
TX Disable	Enable	0		0.8	V
TX Fault	Fault		2		Vcc	V
TX Fault	Normal	0		0.8	V
Receiver
Centre Wavelength		λc	1260		1580	nm
Receiver Sensitivity					-31	dBm	3
Receiver Overload			-9			dBm	3
LOS De-Assert		LOSD			-32	dBm
LOS Assert		LOSA	-45			dBm
LOS Hysteresis			0.5		4.5	dB
Data Output Swing Differential		Vout	370		1800	mV	4
LOS		High	2		Vcc	V
LOS		Low		0.8	V

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	Range	Unit	Accuracy	Calibration
Temperature	0 to +70	°C	±3°C	Internal / External
Temperature	-40 to +85	°C	±3°C	Internal / External
Voltage	3.0 to 3.6	V	±3%	Internal / External
Bias Current	0 to 100	mA	±10%	Internal / External
TX Power	0 to +5	dBm	±3dB	Internal / External
RX Power	-30 to -9	dBm	±3dB	Internal / External

Pin Description

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

Ordering Information

Part Number	Product Description
AB-GE-160	1.25Gbps 1550nm 160km LC DDM SFP 0ºC ~ 70ºC
AB-GE-160-I	1.25Gbps 1550nm 160km LC DDM SFP -40ºC ~ 85ºC