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CDC421A156 Datasheet(PDF) 3 Page - Texas Instruments

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No. de pieza CDC421A156
Descripción Electrónicos  Fully-Integrated, Fixed-Frequency, Low-Jitter Crystal Oscillator Clock Generator
Download  15 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

CDC421A156 Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
FUNCTIONAL BLOCK DIAGRAM
Feedback
Divider
Output
Divider
PFD/
ChargePump
Prescaler
LoopFilter
XIN1
XIN2
VCO
Crystal
Oscillator
CDC421AXXX
www.ti.com ....................................................................................................................................................................................................... SCAS875 – MAY 2009
Over recommended operating conditions (unless otherwise noted).
CDC421Axxx
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VCC
Supply voltage
3.00
3.30
3.60
V
IVCC
Total current
91
110
mA
LVPECL OUTPUT
fCLK
Output frequency
100
312.5
MHz
VOH
LVPECL high-level output voltage
VCC – 1.20
VCC – 0.81
V
VOL
LVPECL low-level output voltage
VCC – 2.17
VCC – 1.36
V
|VOD|
LVPECL differential output voltage
407
1076
mV
tR
Output rise time
20% to 80% of VOUT(PP)
230
ps
tF
Output fall time
20% to 80% of VOUT(PP)
230
ps
Duty cycle of the output waveform
45
55
%
tj
RMS jitter
10 kHz to 20 MHz
1
ps, RMS
LVCMOS INPUT
VIL, CMOS
Low-level CMOS input voltage
VCC = 3.3 V
0.3 × VCC
V
VIH, CMOS
High-level CMOS input voltage
VCC = 3.3 V
0.7 × VCC
V
IL, CMOS
Low-level CMOS input current
VCC = VCC, max, VIL = 0.0 V
–200
µA
IH, CMOS
High-level CMOS input current
VCC = VCC, min, VIH = 3.7 V
200
µA
Figure 1. CDC421Axxx: High-Level Block Diagram
Copyright © 2009, Texas Instruments Incorporated
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