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參數(shù)資料
| 型號： | SPFMIR302 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Plastic Fiber Optic Receiver including Bigfoot⑩ IC for MOST |
| 中文描述： | 塑料光纖接收器，其中大腳⑩集成電路變革 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 537K |
| 代理商： | SPFMIR302 |
Preliminary Product Information
2-Dec-02
Infineon AG
CONFIDENTIAL
Oasis SiliconSystems AG
Page 8
SPF MIR3 02
Other items:
The shown circuit for the –3dB attenuation is just a proposal. Also any other circuit which can
double the value of R
ext
is permitted.
Due to the fact that the optical average level jumps if the power control signal (/-3dB) is
toggled, LOCK/ coding – errors can occur at the subsequent device for a short time.
This is
not very critical, since it occurs only in diagnosis mode. After a time of 10ms, the device should lock
again if the optical attenuation between the devices is not too high.
The Rx and Tx signals can be measured by using standard probes (>1M/<10pF). However, if the
signal quality is very bad, and the LOCK signal of the MOST chip is flaky, connecting a passive
probe to the Rx signal can cause the MOST chip to lock better or worse to the signal. This is due to
the capacitance of the analog probe which is usually in the range of 8..12pF, which shifts the phase
and PWD of the signal. In this case an active probe with a capacitance of less than 1pF is
recommended.
The reference test board which corresponds to the layout examples above, is available at the
Oasis SiliconSystems AG.
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