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F-tone 40G CFP LR4 Optical Transceiver Module
Features
Applications
Description
The CFP optical transceiver module are a high performance, low power consumption, long reach(10 km) interconnect solution supporting 40G Ethernet. It is compliant with the CFP MSA and IEEE P802.3ba 40GBASE-LR4. F-tone CFP 40G LR4 modules offer 4 CWDM transmit and 4 CWDM receive asynchronous channels operating at up to 11.2Gbps per channel.
As shown in Figure 1, the transmitter side of the module consists of an array of VCSELs (Vertical Cavity Surface Emitting Lasers) and associated circuitry, which converts 4 parallel electrical data inputs to 4 parallel optical data output signals and also converts 4 parallel optical signals into 4 parallel electrical signals through an array of PIN photodiodes and associated circuitry.
Absolute Maximum Ratings
Parameter |
Symbol |
Min |
Max |
Unit |
Supply Voltage |
Vcc |
-0.3 |
3.6 |
V |
Input Voltage |
Vin |
-0.3 |
Vcc+0.3 |
V |
Storage Temperature |
Tst |
-40 |
85 |
?C |
Case Operating Temperature |
Top |
0 |
70 |
?C |
Humidity(non-condensing) |
Rh |
95 |
% |
Recommended Operating Conditions
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Supply Voltage |
Vcc |
3.13 |
3.3 |
3.47 |
V |
Operating Case temperature |
Tca |
0 |
70 |
?C |
|
Data Rate Per Lane |
fd |
- |
11.2 |
Gbps |
|
Humidity |
Rh |
85 |
% |
||
Power Dissipation |
Pm |
8 |
W |
Electrical Characteristics
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Differential input impedance |
Zin |
90 |
100 |
110 |
ohm |
Differential Output impedance |
Zout |
90 |
100 |
110 |
ohm |
Differential input voltage amplitude |
¦¤Vin |
120 |
820 |
mVp-p |
|
Differential output voltage amplitude |
¦¤Vout |
300 |
820 |
mVp-p |
|
Input Logic Level High |
VIH |
2.0 |
VCC |
V |
|
Input Logic Level Low |
VIL |
0 |
0.8 |
V |
|
Output Logic Level High |
VOH |
VCC-0.5 |
VCC |
V |
|
Output Logic Level Low |
VOL |
0 |
0.4 |
V |
Note£º
1. Differential input voltage amplitude is measured between TxnP and TxnN.
2. Differential output voltage amplitude is measured between RxnP and RxnN.
XLAUI Input Interface
XLAUI Receiver Parameters |
symbol |
Min |
Typ |
Max |
Units |
Note |
Signal Rate Per Lane |
10.3125 |
Gb/s |
||||
Signal Rate tolerance |
-100 |
100 |
ppm |
|||
AC Common Mode Voltage Tolerance, RMS |
CMVLTac |
20 |
mV |
|||
Minimum Differential Input Return Loss |
Rldiff |
IEEE802.3ba Equation 83B-5 |
dB |
|||
Total Input Jitter Tolerance |
Tjin |
0.62 |
UI |
|||
Deterministic Input Jitter Tolerance |
Tdin |
0.42 |
UI |
|||
Transmitter Input Eye Mask (X1, X2) |
(0.31, 0.5) |
UI |
1 |
|||
Transmitter Input Eye Mask (Y1, Y2) |
(42.5, 425) |
mV |
1 |
XLAUI Output Interface
XLAUI Driver Parameters |
symbol |
Min |
Typ |
Max |
Units |
Note |
Signal Rate Per Lane |
10.3125 |
Gb/s |
||||
Signal Rate tolerance |
-100 |
100 |
ppm |
|||
Single-end Output Voltage |
Vosingle |
-0.4 |
4 |
V |
||
Output AC Common Mode Voltage, RMS |
Vocomac |
15 |
mV |
|||
Output Rise and Fall Time (20%-80%) |
Trftl |
24 |
ps |
|||
Minimum Differential Output Return Loss |
Rldiff |
IEEE802.3ba Equation 83B-6 |
dB |
|||
Total Output Jitter |
Tjo |
0.4 |
UI |
|||
Deterministic Output Jitter |
Tdo |
0.25 |
UI |
|||
Receiver Output Eye Mask (X1, X2) |
(0.2, 0.5) |
UI |
2 |
|||
Receiver Output Eye Mask (Y1, Y2) |
(136, 380) |
mV |
2 |
3.3V CMOS DC parameters
(MOD_RSTn, MOD_LOPWR, TX_DIS, PRG_CNTL, MOD_ABS, RX_LOS, GLB_ALRMn, PRG_ALRM )
Parameter |
symbol |
Min |
Typ |
Max |
Units |
Note |
Output High Voltage (IOH=-100uA) |
Voh |
Vcc-0.2 |
Vcc+0.3 |
V |
||
Output Low Voltage (IOL=100uA) |
Vol |
-0.3 |
0.2 |
V |
||
Intput High Voltage |
Vih |
2 |
Vcc+0.3 |
V |
||
Input Low Voltage |
Vil |
-0.3 |
0.8 |
V |
||
Input Leakage Current |
IIN |
-10 |
10 |
¦ÌA |
||
Minimun Pulse Width of Control Pin Signal |
t_CNTL |
100 |
¦ÌS |
1.2V CMOS DC parameters (MDIO, MDC, PRTADR4:0)
Parameter |
symbol |
Min |
Typ |
Max |
Units |
Note |
Intput High Voltage |
Vih |
0.84 |
1.5 |
V |
||
Input Low Voltage |
Vil |
-0.3 |
0.36 |
V |
||
Input Leakage Current |
IIN |
-100 |
100 |
¦ÌA |
||
Output High Voltage |
Voh |
1.0 |
1.5 |
V |
||
Output Low Voltage |
Vol |
-0.3 |
0.2 |
V |
||
Output high current (Vi =1.0V) |
Iioh |
-4 |
mA |
|||
Output low current (Vi = 0.2V) |
Iol |
4 |
mA |
|||
Input Capacitance |
Ci |
10 |
pF |
MDIO and MDC AC parameters
Parameter |
symbol |
Min |
Typ |
Max |
Units |
Note |
MDC clock Frequency |
fMDC |
0.1 |
4 |
MHz |
||
MDC clock period |
tprd |
250 |
10000 |
ns |
||
MDIO data hold time |
Thold |
10 |
ns |
|||
MDIO data setup time |
Tsetup |
10 |
ns |
|||
MDC high and low time |
twidth |
40 |
60 |
% |
||
160 |
ns |
|||||
Delay from MDC rising edge to MDIO data change |
Tdelay |
175 |
ns |
|||
MDIO/MDC termination in CFP |
Zt |
100 |
kOhm |
Optical Characteristics
Transmitter Optical Specifications (T = 25¡ãC, VCC =3.3V +/- 5%)
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Average Optical Power(per channel) |
Pout |
-7 |
2.3 |
dBm |
|
Average Optical Power(per channel) - Disabled |
Poff |
-30 |
dBm |
||
Optical Return Loss Tolerance |
-12 |
dB |
|||
Extinction Ratio |
ER |
3 |
dB |
||
Lane0 Wavelength |
¦Ëc |
1264.5 |
1271 |
1277.5 |
nm |
Lane1 Wavelength |
¦Ëc |
1284.5 |
1291 |
1297.5 |
nm |
Lane2 Wavelength |
¦Ëc |
1304.5 |
1311 |
1317.5 |
nm |
Lane3 Wavelength |
¦Ëc |
1324.5 |
1331 |
1337.5 |
nm |
Side-mode suppression ratio (SMSR) |
SMSR |
30 |
dB |
||
Total average launch power |
Ptotal |
8.3 |
dBm |
||
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} |
{0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
Note£º
1. Average optical power is measured at the output of the modules optical interface.
Receiver Optical Specifications (T = 25¡ãC, VCC =3.3V +/- 5%)
Parameter |
Symbol |
Min |
Typical |
Max |
Unit |
Optical Power Sensitivity(per channel,OMA) |
-11.5 |
dBm |
|||
Average receive power, each lane |
Pin max |
2.3 |
dBm |
||
Average receive power, each lane |
Pin min |
-13.7 |
dBm |
||
Stressed Receiver Sensitivity(OMA) |
PS |
-9.6 |
dBm |
||
Receiver reflectance |
¦Ëc |
-26 |
dB |
||
Difference in receive power between any two lanes (OMA) |
Rl |
7.5 |
dB |
Note£º
1. Optical power sensitivity is measured with BER@10<sup< a="">>-12 at 10.3125Gbps per channel.