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參數資料
| 型號： | FS8160 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1.1 GHz/1.1 GHz Dual Phase-locked Loop IC |
| 中文描述： | 1.1 GHz/1.1 GHz雙鎖相環(huán)集成電路 |
| 文件頁數： | 11/13頁 |
| 文件大?。?/td> | 257K |
| 代理商： | FS8160 |
FS8160
Page 11
April 2003
Lock Detector
The lock detector incorporates a filter which compares the phase error between the inputs
to the PFD to an R-C generated delay of 15 ns. To enter the locked state (output is high),
the phase error must be less than 15 ns for four (4) consecutive cycles. Once in the locked
state, the generated R-C delay is changed to 30 ns. To exit the locked state (i.e. lock detec-
tor output goes low), the phase error must become greater than the 30 ns delay. When the
PLL is in stand-by mode, the lock detector output is forced low. A flow chart representing
the operation of the lock detector is given below.
Crystal Oscillator
The internal crystal oscillator circuitry may be used in either of two modes: crystal mode
— with an external crystal resonator (crystal mode) or logic mode — with an external ref-
erence frequency source such as a TCXO (logic mode). The FOLD[3:0] control bits select
Start
Phase error
< 15 ns
Phase error
< 15 ns
Yes
Phase error
< 15 ns
Phase error
< 15 ns
Yes
Yes
Yes
Locked state
(output HIGH)
Phase error
> 30 ns
Un-locked state
(output LOW)
No
No
No
No
No
Yes
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相關代理商/技術參數 |
參數描述 |
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| FS8170 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.5 GHz Low Power Phase-locked Loop IC |
| FS8308 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FRS. Pager. Multi-Channel system |
| FS85 | 制造商:Cooper Wiring Devices 功能描述: |
| FS850 | 制造商:Hubbell Wiring Device-Kellems 功能描述:FLUOR STARTER, 90/100W |
| FS-8502 | 制造商:PS 功能描述:FOR 85,90, AND 100WATT LAMPS |
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