參數(shù)資料
型號： 935198040551
廠商： NXP SEMICONDUCTORS
元件分類： 數(shù)字傳輸電路
英文描述： CLOCK RECOVERY CIRCUIT, PQFP48
封裝： PLASTIC, SOT-313, LQFP-48
文件頁數(shù)： 20/38頁
文件大?。?/td> 209K
代理商： 935198040551
1999 May 27
27
Philips Semiconductors
Product specication
SDH/SONET data and clock recovery unit
STM1/4/16 OC3/12/48 GE
OQ2541HP; OQ2541U
Fig.29 Application diagram showing the OQ2541 configured for the STM16/OC48 mode (2488.32 Mbits/s) with
a positive supply voltage application.
(1) (1) All pins GND must be connected directly to VCC on the PCB plane of +5 V (pins 2, 5, 8, 10, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44 and 47).
(2) L1 = RF choke type Murata BLM21.
(3) The loop mode outputs are used as main outputs:
pin ENL = HIGH-level selects loop mode outputs
pin ENL = LOW-level selects loop mode and normal mode outputs simultaneously.
handbook, full pagewidth
2
2
1
k
1
k
1
F
L1(2)
β > 100
100
nF
3.3
nF
MGL663
VEE2
VEE1
PC
GND(1)
1
3
4
6
7
45
46
42
43
9
34
33
27
28
30
17
15
16
21
22
48
37
31
25
24
OQ2541
normal
output
unused
output
loop
output
select
DINQ
DIN
PRE-
AMP
DOUT1250
COUTQ
COUT
DOUTQ
DOUT
12
LOCK
AREF
VCC
CLOOP
CLOOPQ
DLOOP
DREF19
39 MHz
system clock
DLOOPQ
CAPUPQ
CAPDOQ
CREFQ
DREF39
CREF
ENL
DOUT155
DOUT622
39
LOS
10 k
100 nF
=
main
output(3)
=
VCC
10 k
13, 18, 19,
36, 40
i.c.
5
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