oq2541u NXP Semiconductors, oq2541u Datasheet - Page 26
oq2541u
Manufacturer Part Number
oq2541u
Description
Sdh/sonet Data And Clock Recovery Unit Stm1/4/16 Oc3/12/48 Ge
Manufacturer
NXP Semiconductors
Datasheet
1.OQ2541U.pdf
(36 pages)
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Philips Semiconductors
1999 May 27
handbook, full pagewidth
SDH/SONET data and clock recovery unit
STM1/4/16 OC3/12/48 GE
(1) All pins GND must be connected directly to the PCB ground plane (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.
Fig.28 Application diagram showing the OQ2541 configured for the STM4/OC12 mode (622.08 Mbits/s).
system clock
100 nF
39 MHz
PRE-
AMP
100 nF
CAPDOQ
CAPUPQ
DREF19
DREF39
CREFQ
i.c.
CREF
DINQ
DIN
15
16
33
34
21
22
9
24
5
17
13, 18, 19,
36, 40
GND
(1)
2
100
nF
OQ2541
25
V EE1
k
1
26
31
V EE2
2
> 100
k
1
37
PC
39
12
42
43
45
46
48
27
28
30
3.3
nF
6
7
3
4
1
LOS
LOCK
DOUT
DOUTQ
COUT
COUTQ
DLOOP
DLOOPQ
CLOOP
CLOOPQ
ENL
AREF
DOUT1250
DOUT622
DOUT155
1 F
OQ2541HP; OQ2541U
L1
3.3 V
3.3 V
(2)
MGL662
10 k
10 k
normal
output
output
output
select
4.5 V
loop
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