SNR-SFP28-W73-20 модуль SFP28 WDM 25GBASE разъем LC дальность до 20км 1270нм 25 гигабитный модуль с форм-фактором SFP28, работающий по одному волокну на длинах волн 1270нм/1330нм и совместимый со стандартом 25GbE.
Rate Select 0, optionally controls SFP28 module receiver. This pin is pulled low to VeeT with a >30K resistor.
8
LOS
Loss of Signal
3
Note 4
9
RS1
TX Rate Select (LVTTL).
1
Rate Select 1, optionally controls SFP28 module transmitter. This pin is pulled low to VeeT with a >30K resistor.
10
VeeR
Receiver Ground
1
Note 5
11
VeeR
Receiver Ground
1
Note 5
12
RD-
Inv. Received Data
Out
3
Note 6
13
RD+
Received Data Out
3
Note 6
14
VeeR
Receiver Ground
1
Note 5
15
VccR
Receiver Power
2
3.3V ± 5%, Note 7
16
VccT
Transmitter Power
2
3.3V ± 5%, Note 7
17
VeeT
Transmitter Ground
1
Note 5
18
TD+
Transmit Data In
3
Note 8
19
TD-
Inv. Transmit Data
In
3
Note 8
20
VeeT
Transmitter Ground
1
Note 5
Вы можете купить SNR-SFP28-W73-20 модуль SFP28 WDM 25GBASE разъем LC дальность до 20км 1270нм в интернет-магазине Cyber Networks официального дилера SNR по выгодной цене с доставкой по РФ.
Note4: Exceeding any one of these values may destroy the device permanently.
Recommended Operating Conditions
Parameter
Symbol
Min.
Typical
Max.
Unit
Operating Case
Temperature
TC
Standard
0
70
°C
Industrial
-40
85
Power Supply Voltage
VCC
3.135
3.465
V
Power Supply Current
ICC
Standard
360
mA
Industrial
455
mA
Performance Specifications – Electrical
Parameter
Symbol
Min.
Typ.
Max
Unit
Notes
Transmitter
CML Inputs
(Differetial)
Vin
200
900
mVpp
AC coupled inputs
Input Impedance
(Differential)
Zin
100
ohms
Connected directly to TX pins
Tx_DISABLE Input
Voltage – High
2
Vcc+0.3
V
Tx_DISABLE Input
Voltage – Low
-0.3
0.8
V
Receiver
CML Outputs
(Differetial)
Vout
300
1000
mVpp
AC coupled outputs
Rx_LOS Output
Voltage – High
2.4
Vcc+0.3
V
Rx_LOS Output
Voltage – Low
-0.3
0.8
V
Optical and Electrical Characteristics (SNR-SFP28-W73-20, 1271nm DFB & 1331nm PIN/TIA)
Parameter
Symbol
Min.
Typical
Max.
Unit
9um Core Diameter SMF
20
Km
Data Rate
25.78
Gbps
Transmitter
Optical Center Wavelength
λ
1264.5
1271
1277.5
nm
Spectral Width (-20dB)
Δλ
1
nm
Average Output Power@25.78Gb/s
PAVG
0
4
dBm
Extinction Ratio
ER
3.5
dB
Transmitter Dispersion Penalty
TDP
3.5
dB
Side Mode Suppression Ratio
SMSR
30
Side Mode Suppression Ratio
Average Launch Power of OFF
Transmitter
POFF
-30
Average Launch
Power of OFF
Transmitter
Receiver
Center Wavelength
λC
1324.5
1331
1337.5
nm
Receiver Sensitivity*Note5
Pmin
-14.5
dBm
Receiver Overload*Note6
Pmin
2.5
dBm
LOS De-Assert
LOSD
-17
dBm
LOS Assert
LOSA
-30
dBm
LOS Hysteresis
0.5
dB
Note5: Measured with data rate at 25.78Gb/s, BER less than 5E-5 and PRBS 231-1.
Note6: SNR-SFP28-W73-20 is targeted for long reach application with high power transmitter. Please ensure at least 3dB optical attenuation for optical loopback test.