參數(shù)資料
型號(hào)： IBM42G12SNNAA30
廠商： IBM Microeletronics
英文描述： Gigabit Ethernet/Fibre Channel Small Form Factor PTH Transceiver(吉（10^ 9 G)位以太網(wǎng)/光纖通道PTH收發(fā)器)
中文描述： 千兆以太網(wǎng)/光纖通道纖巧甲狀旁腺收發(fā)器（吉（10 ^ 9政）位以太網(wǎng)/光纖通道甲狀旁腺收發(fā)器）
文件頁(yè)數(shù)： 10/24頁(yè)
文件大小： 212K
代理商： IBM42G12SNNAA30
IBM42F10SNNAA30 IBM42F12SNNAA30 IBM42G10SNNAA30 IBM42G12SNNAA30
IBM42F10LNNAA30 IBM42F12LNNAA30 IBM42G10LNNAA30 IBM42G12LNNAA30
Gigabit Ethernet/Fibre Channel Small Form Factor PTH Transceiver
Page 10 of 23
08/15/00
Optical Specifications (Short Wavelength)
Receiver Specifications
Symbol
Parameter
Min
Typical
Max.
Unit
Notes
λ
Operating Wavelength
770
860
nm
RL
Return Loss of Receiver
12
dB
Average Received Power (1.25Gb/s)
-17
0
dBm
1
OMA
Optical Modulation Amplitude (1.0625Gb/s)
31
2000
μ
W (pk-pk)
1, 2
P
off
Rx_SD De-Assert (negate) Level
-27.0
-17.5
dBm (avg)
3
P
on
Rx_SD Assert Level
-17.0
dBm (avg)
3
Rx_SD Hysteresis
0.5
2.5
5.0
dB (optical)
3
1. The minimum and maximum values of the average received power in dBm give the input power range to maintain a
BER < 10
-12
when the data is sampled in the center of the receiver eye. These values take into account power penalties caused by
the use of a laser transmitter with a worst-case combination of spectral width, extinction ratio and pulse shape characteristics.
2. Optical Modulation Amplitude (OMA) is defined as the difference in optical power between a logic level one and a logic level zero.
The OMA is defined in terms of average optical power (P
AVG
in
μ
W) and extinction ratio (ER) as given by OMA=2P
AVG
((ER-
1)/(ER+1)). In this expression the extinction ratio, defined as the ratio of the average optical power (in
μ
W) in a logic level one to the
average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case reflections,
must be the absolute (unitless linear) ratio and not expressed in ratio of 9 dB. At 1.0625Gb/s, the specified OMA is equivalent to an
average power of -17 dBm at an ER of 9 dB.
3. The Rx_SD has hysteresis to minimize “chatter” on the output line. In principle, hysteresis alone does not guarantee chatter-free
operation. The SFF-PTH-1063/1250-SW/LW-2X5/2X6, however, presents a Rx_SD line without chatter, where chatter is defined as
a transient response having a voltage level of greater than 0.5 volts (in the case of going from the negate level to the assert level)
and of any duration that can be sensed by the host logic.
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IBM42F21LNNAA10 1x Fibre Channel Small Form Factor PTH Transceiver(1x吉位光纖通道小外形PTH收發(fā)器)
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