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Teilenummer | CF5050A-1 |
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Beschreibung | Single-output Clock Generator IC | |
Hersteller | Nippon Precision Circuits Inc | |
Logo | ||
Gesamt 8 Seiten 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
MEASUREMENT CIRCUITS
Measurement Circuit 1
SM5050A
Measurement Circuit 4
X'tal
IDD
A IST
XT VDDQ VDD
Q
XTN
INHN VSSQ VSS
VDDQ VDD
Q
INHN VSSQ VSS
IZ
IZ
A
V
VOH
VOL
Measurement Circuit 2
Load Circuit 1
3.0V
VDDQ VDD
P0, P1,
INHN VSSQ VSS
V
VIH
VIL
IPR A
RUP1 = VDD
IPR
(VIL = 0V)
RUP2 = VDD VIH
IPR
VDD = 3.0V
VIH = 2.1V
Q output
CL : 15pF
(Including probe capacitance)
Measurement Circuit 3
XT VDDQ VDD
XTN
A
IRf
VSSQ VSS
Rf =
VDD
IRf
NIPPON PRECISION CIRCUITS—6
6 Page | ||
Seiten | Gesamt 8 Seiten | |
PDF Download | [ CF5050A-1 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
CF5050A-1 | Single-output Clock Generator IC | Nippon Precision Circuits Inc |
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