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CDC421156RGERG4 Datasheet(Hoja de datos) 2 Page - Texas Instruments

No. de Pieza. CDC421156RGERG4
Descripción  FULLY INTEGRATED FIXED FREQUENCY LOW-JITTER, CRYSTAL-OSCILLATOR CLOCK
Descarga  9 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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Crystal
Oscillator
Feedback
Divider
Output
Divider
PFD/
ChargePump
Prescaler
LoopFilter
XIN1
XIN2
B0230-01
VCO
PACKAGE (QFN-24)
NC
V
CC
15
14
13
RGEPACKAGE
(TOP VIEW)
CDC421xxx
NC
1
2
3
NC
4
NC
5
NC
18
NC
17
V
CC
16
NC
NC
CE
NC
P0024-06
6
CDC421xxx
SLAS540 – APRIL 2007
Figure 1. High-Level Block Diagram of the CDC421xxx
The CDC421xxx is packaged in a QFN-24 terminal package. The QFN package footprint is shown. Terminal
locations and numbers are shown in Figure 2.
Figure 2. Pinout of the CDC421xxx QFN-24 Package
The terminal functions table shows the terminal descriptions for the CDC421xxx QFN-24 package.
Table 1. TERMINAL FUNCTIONS
TERMINAL
ESD
TYPE
DESCRIPTION
PROTECTION
NAME
NO.
VCC
16, 17
Power
Y
3.3V power supply
GND
8, 9
GND
Y
Ground
In crystal input mode, connect XIN1 to one end of the crystal and XIN2 to the
XIN 1
21
I
Y
other end of the crystal. In LVCMOS single-ended driven mode, XIN1 (pin 21) acts
XIN 2
22
I
N
as input reference and XIN2 should connect to GND.
2
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