SFP-1312-30BD 1.25Gb/s 1310nm Single-mode SFP Transceiver

PRODUCT FEATURES

l Up to 1.25Gb/s data links

l DFB laser transmitter and PIN photo-detector

l Up to 40km on 9/125µm SMF

l Hot-pluggable SFP footprint

l Duplex LC/UPC type pluggable optical interface

l Low power dissipation

l Metal enclosure, for lower EMI

l RoHS compliant and lead-free

l Single +3.3V power supply

l Compliant with SFF-8472

l Case operating temperature

Commercial: 0°C to +70°C

Extended: -10°C to +80°C

Industrial: -40°C to +85°C

APPLICATIONS

l Switch to Switch Interface

l Gigabit Ethernet

l Switched Backplane Applications

l Router/Server Interface

l Other Optical Links

PRODUCT DESCRIPTION

SFP-1312-40BD Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of four sections: the LD driver, the limiting amplifier, the DFB laser and the PIN photo-detector .The module data link up to 40KM in 9/125um single mode fiber.

The optical output can be disabled by a TTL logic high-level input of Tx Disable. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner.

Ordering information

Product part Number	Data Rate (Mbps)	Media	Wavelength (nm)	Transmission Distance(km)	Temperature Range（Tcase）（℃）
SFP-1312-40BD	1250	Single mode fiber	1310	30	0~70	commercial
SFP-1312-40BDE	1250	Single mode fiber	1310	30	-10~80	extended
SFP-1312-40BDA	1250	Single mode fiber	1310	30	-40~85	industrial

Pin Descriptions

Pin	Symbol	Name/Description	NOTE
1	VEET	Transmitter Ground (Common with Receiver Ground)	1
2	TFAULT	Transmitter Fault.
3	TDIS	Transmitter Disable. Laser output disabled on high or open.	2
4	MOD_DEF(2)	Module Definition 2. Data line for Serial ID.	3
5	MOD_DEF(1)	Module Definition 1. Clock line for Serial ID.	3
6	MOD_DEF(0)	Module Definition 0. Grounded within the module.	3
7	Rate Select	No connection required	4
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	5
9	VEER	Receiver Ground (Common with Transmitter Ground)	1
10	VEER	Receiver Ground (Common with Transmitter Ground)	1
11	VEER	Receiver Ground (Common with Transmitter Ground)	1
12	RD-	Receiver Inverted DATA out. AC Coupled
13	RD+	Receiver Non-inverted DATA out. AC Coupled
14	VEER	Receiver Ground (Common with Transmitter Ground)	1
15	VCCR	Receiver Power Supply
16	VCCT	Transmitter Power Supply
17	VEET	Transmitter Ground (Common with Receiver Ground)	1
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled.
19	TD-	Transmitter Inverted DATA in. AC Coupled.
20	VEET	Transmitter Ground (Common with Receiver Ground)	1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

3. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V.MOD_DEF (0) pulls line low to indicate module is plugged in.

4. This is an optional input used to control the receiver bandwidth for compatibility with multiple data rates (most likely Fiber Channel 1x and 2x Rates).If implemented, the input will be internally pulled down with > 30kΩ resistor. The input states are:

Ÿ Low (0 – 0.8V): Reduced Bandwidth

Ÿ (>0.8, < 2.0V): Undefined

Ÿ High (2.0 – 3.465V): Full Bandwidth

Ÿ Open: Reduced Bandwidth

5. LOS is open collector output should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Figure2. Pin out of Connector Block on Host Board

II. Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	Ts	-40		85	ºC
Relative Humidity	RH	5		95	%
Power Supply Voltage	VCC	-0.5		4	V
Signal Input Voltage		-0.3		Vcc+0.3	V
Receiver Damage Threshold		+5			dBm

III. Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Case Operating Temperature	Tcase	0		70	ºC	SFP-1312-40BD
		-10		80		SFP-1312-40BDE
		-40		85		SFP-1312-40BDA
Power Supply Voltage	VCC	3.13	3.3	3.47	V
Power Supply Current	ICC			280	mA
Power Supply Noise Rejection				100	mVp-p	100Hz to 1MHz
Data Rate			1250/1250		Mbps	TX Rate/RX Rate
Transmission Distance				40	KM
Coupled Fiber	Single mode fiber					9/125um SMF

Specification of Transmitter

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Average Output Power	POUT	-5		0	dBm	Note (1)
Extinction Ratio	ER	9			dB
Center Wavelength	λC	1290	1310	1330	nm	DFB Laser
Side Mode Suppression Ratio	SMSR	30			dB
Spectrum Bandwidth(-20dB)	σ			1	nm
Transmitter OFF Output Power	POff			-45	dBm
Differential Line Input Impedance	RIN	90	100	110	Ohm
Output Eye Mask	Compliant with IEEE802.3 z (class 1 laser safety)					Note (2)

Note (1): Measure at 2^7-1 NRZ PRBS pattern

Note (2): Transmitter eye mask definition

V. Specification of Receiver

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Input Optical Wavelength	λIN	1270		1610	nm	PIN-TIA
Receiver Sensitivity	PIN			-24	dBm	Note (1)
Input Saturation Power (Overload)	PSAT	-1			dBm
Los Of Signal Assert	PA			-25	dBm
Los Of Signal De-assert	PD	-38			dBm	Note (2)
LOS Hysteresis	PA-PD	0.5	2	6	dB

Note (1): Measured with Light source 1310nm, ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ

Note (2): When LOS de-asserted, the RX data+/- output is High-level (fixed)

VI. Electrical Interface Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
*Transmitter*
Total Supply Current	ICC			A	mA	Note (1)
Transmitter Disable Input-High	VDISH	2		Vcc+0.3	V
Transmitter Disable Input-Low	VDISL	0		0.8	V
Transmitter Fault Input-High	VTxFH	2		Vcc+0.3	V
Transmitter Fault Input-Low	VTxFL	0		0.8	V
*Receiver*
Total Supply Current	ICC			B	mA	Note (1)
LOSS Output Voltage-High	VLOSH	2		Vcc+0.3	V	LVTTL
LOSS Output Voltage-Low	VLOSL	0		0.8	V	LVTTL

Note (1): A (TX) + B (RX) = 280mA (Not include termination circuit)

VII. Recommend Circuit Schematic

VIII. Mechanical Specifications (Unit: mm)

SFP-1312-30BD

IX. Regulatory Compliance

Feature	Reference	Performance
Electrostatic discharge（ESD）	IEC/EN 61000-4-2	Compatible with standards
Electromagnetic Interference (EMI)	FCC Part 15 Class B EN 55022 Class B (CISPR 22A)	Compatible with standards
Laser Eye Safety	FDA 21CFR 1040.10, 1040.11 IEC/EN 60825-1，2	Class 1 laser product
ROHS	2002/95/EC	Compatible with standards
EMC	EN61000-3	Compatible with standards