1.25Gbps BIDI Tx1490/Rx1550nm 160km SFP Transceiver

Features

> Dual data-rate of 1.25Gbps/1.063Gbps operation

> 160km with 9/125µm SMF

> 1490/1550nm DFB laser

> Compliant with SFP MSA and SFF-8472 with duplex LC receptacle

> Digital Diagnostic Monitoring: Internal Calibration or External Calibration

> Compatible with RoHS

> +3.3V single power supply

Applications

* 1.25Gbps 1000Base-ZX

* 1G/2G Fiber Channel

Description

The SFPs are small form factor pluggable (SFP) transceivers compatible with multi-sourcing agreement (MSA). It is suitable for single-mode fiber (SMF) communications in 1.25Gbps Ethernet and 1G/2G Fiber Channel.

Regulatory Compliance

The SFPs are Class 1 Laser Products comply with FDA regulations. Meet Class 1 eye safety requirements of EN 60825 and the electrical safety requirements of EN 60950.

PART NUMBER	TX/RX	DISTANCE	LASER	TEMPERATURE
BT-OC24-160A	1490/1550nm	160km	DFB/APD	COM 0~70℃
BT-OC24-160AI	1490/1550nm	160km	DFB/ APD	IND -40~85℃

Absolute Maximum Ratings

Parameter		Symbol	Min.	Max.	Unit
Supply Voltage		VCC	-0.5	3.6	V
Storage Temperature		TS	-40	85	°C
BT-OC24-160A	Operating Temperature	TC	0	70	°C
BT-OC24-160A	Operating Temperature	TC	-40	85	°C

Recommended Operating Conditions

Parameter		Symbol	Min.	Typical	Max.	Unit
BT-OC24-160A	Operating Temperature	TC	0		70	°C
BT-OC24-160AI	Operating Temperature	TC	-40		85	°C
Power Supply Voltage		VCC	3.15	3.3	3.45	V
Power Supply Current		ICC			300	mA
Data Rate				1.25		GBps
Max Link Length on 9/125µm SMF		Lmax			160	km

Optical Characteristics

Parameter	Symbol	Min.	Typical	Max.	Unit
Transmitter
Centre Wavelength	λc	1480	1490	1500	nm
Spectral Width (-20dB)	σ			1	nm
Average Output Power	Pout	0		5	dBm
Extinction Ratio	ER	9			dB
Optical Rise/Fall Time	tr/tf			2	ns
Receiver
Centre Wavelength	λc	1540	1550	1560	nm
Receiver Sensitivity	PIN			-34	dBm
Receiver Overload	PMAX	-7			dBm
LOS De-Assert	LOSD			-37	dBm
LOS Assert	LOSA	-40			dBm
LOS Hysteresis		0.5		4.5	dB

Electrical Characteristics

Parameter	Symbol	Min.	Typical	Max.	Unit
Transmitter
Input Differential Impedance	Zin	90	100	110	Ω
Data Input Swing Differential	Vin	500		2400	mV
Tx-Dis Disable	Vd	2.0		Vcc	V
Tx-Dis Enable	Ven	0		0.8	V
TX-Fault (Fault)		2.0		Vcc+0.3	V
TX-Fault (Normal)		0		0.8	V
Receiver
Data Output Swing Differential	Vout	370		2000	mV
Rx-Los Fault	Vlf	2.0		Vcc+0.3	V
Rx-Los Normal	Vln	0		0+0.8	V

Pin Descriptions

Pin	Symbol	Description	Ref.
1	VEET	Transmitter Ground (Common with Receiver Ground)	6.1
2	TFAULT	Transmitter Fault. Not supported.
3	TDIS	Transmitter Disable. Laser output disabled on high or open.	6.2
4	MOD_DEF(2)	Module Definition 2. Data line for Serial ID.	6.3
5	MOD_DEF(1)	Module Definition 1. Clock line for Serial ID.	6.3
6	MOD_DEF(0)	Module Definition 0. Grounded within the module.	6.3
7	Rate Select	No connection required
8	LOS	Loss of Signal indication. Logic 0 indicates normal operation.	6.4
9	VEER	Receiver Ground (Common with Transmitter Ground)	6.1
10	VEER	Receiver Ground (Common with Transmitter Ground)	6.1
11	VEER	Receiver Ground (Common with Transmitter Ground)	6.1
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)	6.1
15	VCCR	Receiver Power Supply
16	VCCT	Transmitter Power Supply
17	VEET	Transmitter Ground (Common with Receiver Ground)	6.1
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)	6.1

Notes:

* Circuit ground is internally isolated from chassis ground.

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

* 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.

* 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.

EEPROM & DDM THRESHOLD

EEPROM

2 wire address 1010000X (A0h)

0~95 Serial ID Defined by SFP MSA (96 bytes)

96~127 Vendor Speific (32 bytes)

128~255 Reserved (128 bytes)

DDM THRESHOLD

		Low Alarm	Low Warn	High Warn	High Alarm
Temp	BT-OC24-160A	-45℃	-40℃	85℃	88℃
Temp	BT-OC24-160AI	-10℃	-6℃	85℃	90℃
Voltage		3V	3.1V	3.5V	3.6V
Tx Bias BT-OC24-160A		15mA	20mA	70mA	75mA
Tx Bias BT-OC24-160AI		15mA	20mA	120mA	130mA
Tx Power		-4dBm	-3dBm	6dBm	7dBm
Rx Power		-32dBm	-31dBm	1dBm	3dBm