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PDF CF5050A-1 Data sheet ( Hoja de datos )

Número de pieza CF5050A-1
Descripción Single-output Clock Generator IC
Fabricantes Nippon Precision Circuits Inc 
Logotipo Nippon Precision Circuits Inc Logotipo



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No Preview Available ! CF5050A-1 Hoja de datos, Descripción, Manual

NIPPON PRECISION CIRCUITS INC.
SM5050A
Single-output Clock Generator IC
OVERVIEW
The SM5050A is a single-output clock generator IC that generates standard high-frequency clocks derived
from a 20 to 40MHz crystal oscillator master clock. The high-frequency output stage uses optimized PLL cir-
cuits for low jitter output. The oscillator capacitors CG and CD are built-in, realizing a high-frequency output
oscillator by just the connection of a crystal. Two program inputs allows selection from 4 frequency multipli-
ers, making the SM5050A able to generate multi-standard frequency clock outputs.
FEATURES
s 2.7 to 3.6V operating supply voltage
s 20 to 40MHz master clock frequency (fundamen-
tal)
s Output frequency ranges
• 100 to 166.6MHz (VDD = VDDQ = 3.0 to 3.6V)
• 100 to 125MHz (VDD = VDDQ = 2.7 to 3.6V)
s 8mA output drive capability
s Oscillator capacitors (CG, CD) and feedback resis-
tor (Rf) built-in
s 100ps (typ) low jitter output (peak-to-peak)
s 2 program inputs for 4 selectable multiplier ratios
s Standby function
s Packaging
• Chip form (CF5050A)
• 8-pin VSOP package (SM5050AV)
PINOUT
(Top view )
P1 1
VSS 2
Q3
VDD 4
8 P0
7 INHN
6 XT
5 XTN
PAD DIMENSIONS
(Unit: µm)
P1 P0
VSS
VSSQ
Q
SA5050A
(0,0)
VDDQ VDD
XTN
Chip size: 2.16 × 1.57mm
Chip thickness: 300 ± 30µm
Chip base: V S S level
PACKAGE DIMENSIONS
(Unit: mm)
(2160,1570)
INHN
XT
0 to 10
ORDERING INFORMATION
Device
CF5050A–1
SM5050AV
Package
Chip form
8-pin VSOP
0.575 typ
3.1 ± 0.3
0.15
+0.1
0.05
0.65
0.10
0.22 ± 0.1 0.12 M
NIPPON PRECISION CIRCUITS—1

1 page




CF5050A-1 pdf
SM5050A
Switching Characteristics
VDD = 2.7 to 3.6V, VSS = 0V, Ta = 20 to 80°C unless otherwise noted
Parameter
Symbol
Condition
Rating
min typ
Output rise time
Output fall time
Output duty cycle
Output disable delay time1
Startup time2,3
Oscillator frequency
tr
0.2VDD 0.8VDD, measurement
circuit 1, load circuit 1, CL = 15pF
tf
0.8VDD 0.2VDD, measurement
circuit 1, load circuit 1, CL = 15pF
V D D = 3V, Ta = 25°C , measurement
Duty circuit 1, load circuit 1, CL = 15pF,
f166.6MHz
tP L Z
V D D = 3V, Ta = 25°C , measurement
circuit 1, load circuit 1, CL = 15pF
tS Z L
V D D = 3V, Ta = 25°C , measurement
circuit 1, load circuit 1, CL = 15pF
f Measurement circuit 1
40
20
1
1
1
Output frequency
Output clock jitter3
VDD = 2.7V
fO U T Measurement circuit 1
VDD = 3.0V
V D D = 3V, Ta = 25°C , 25MHz crystal,
Jitter
P0 = HIGH, P1 = LOW , measurement
circuit 1, load circuit 1,CL = 15pF,
peak-to-peak
100
100
100
1. Time from when INHN goes LOW until Q output goes high impedance.
2. Time from when either INHN goes LOW to HIGH or supply voltage VDD = 3.0V until normal signal output.
3. Measured values using NPC characteristics standard evaluation board and standard crystal.
NPC STANDARD CRYSTAL DATA
max
2.5
2.5
60
100
40
125
166.6
Unit
ns
ns
%
ns
ms
MHz
MHz
ps
Cb
L Ca R
f (MHz)
25
27
R ()
4.368
7.421
L (mH)
1.885
2.402
Ca (fF)
21.52
14.48
Cb (pF)
4.793
4.097
NIPPON PRECISION CIRCUITS—5

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