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BT-SFP-IG40/BT-SFP-G40 Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP 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, and the system also can disable the module via I2C. 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. The system can also get the LOS (or Link)/Disable/Fault information via I2C register access.
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
| 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 |
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
|
Case Operating Temperature |
Tcase |
0 | 70 |
ºC |
BT-SFP-G40 | |
| -40 | 85 | BT-SFP-IG40 | ||||
| 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 | ||||
| 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 | ||
Note (1): A (TX) + B (RX) = 280mA (Not include termination circuit)
| 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 | FP 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
| 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)
| 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 |
| Low (0 – 0.8V): | Reduced Bandwidth |
| (>0.8, < 2.0V): | Undefined |
| High (2.0 – 3.465V): | Full Bandwidth |
| Open: | Reduced Bandwidth |
BT-SFP-IG40/BT-SFP-G40 transceivers support the 2-wire serial communication protocol as defined in the SFP MSA. It is very closely related to the E2PROM defined in the GBIC standard, with the same electrical specifications. The standard SFP serial ID provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information.
Additionally, BT-SFP-IG40/BT-SFP-G40 transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage .It also defines a sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters are outside of a factory set normal range.
The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a 2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8 bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged. The interface is identical to, and is thus fully backward compatible with both the GBIC Specification and the SFP Multi Source Agreement.
The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edge clocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.
Digital diagnostics for the BT-SFP-IG40/BT-SFP-G40 are internally calibrated by default.
BT-SFP-IG40/BT-SFP-G40
| 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 |
| Component Recognition | IEC/EN 60950 ，UL | Compatible with standards |
| ROHS | 2002/95/EC | Compatible with standards |
| EMC | EN61000-3 | Compatible with standards |
|
Product part Number |
Data Rate
(Mbps) |
Media |
Wavelength
(nm) |
Transmission
Distance(km) |
Temperature Range
（Tcase）（℃） |
|
|
BT-SFP-G40 |
1250 |
Single mode fiber |
1310 |
40 |
0~70 |
commercial |
|
BT-SFP-IG40 |
1250 |
Single mode fiber |
1310 |
40 |
-40~85 |
industrial |
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