ASTMUPC Datasheet, PDF (4/10 Pages) Abracon Corporation – Industrial control

High Performance, Programmable LVCMOS SMD MEMS Oscillator
ASTMUPC
ASTMUPC
PART IDENTIFICATION:
Pb RoHS/RoHS II compliant 2.7 x 2.4 x 0.75mm; 3.2 x 2.5 x 0.75mm;
5.0 x 3.2 x 0.75mm; 7.0 x 5.0 x 0.9mm
Table 3: V_dd=2.8V Rise/Fall Times for Specific C_LOAD
Rise/Fall Time Typ. (ns)
Drive
Strength
Options
C_LOAD
5pF 15pF 30pF 45pF 60pF
L
7.93 12.69 17.94 30.10 38.89
A
4.06 6.66 11.04 15.31 19.80
R
2.68 4.40 7.53 10.29 13.37
B
2.00 3.25 5.66 7.84 10.11
S
1.59 2.57 4.54 6.27 8.07
D
1.19 2.14 3.76 5.21 6.72
T
1.00 1.79 3.20 4.43 5.77
E
0.94 1.51 2.78 3.84 5.06
U
0.90 1.38 2.48 3.40 4.50
F
0.87 1.29 2.21 3.03 4.05
W
0.62 1.19 1.99 2.76 3.68
G or Blank
(default)
0.41
1.08
1.84
2.52
3.36
X
0.37 0.96 1.72 2.33 3.15
K
0.35 0.78 1.63 2.15 2.92
Y
0.33 0.67 1.54 2.00 2.75
Q
0.32 0.63 1.46 1.89 2.57
Z
0.31 0.60 1.39 1.80 2.43
M
0.30 0.57 1.31 1.72 2.30
N
0.30 0.56 1.22 1.63 2.22
P
0.29 0.54 1.13 1.55 2.13
Table 4: V_dd=3.3V Rise/Fall Times for Specific C_LOAD
Rise/Fall Time Typ. (ns)
Drive
Strength
Options
C_LOAD
5pF 15pF 30pF 45pF 60pF
L
7.18 11.59 17.24 27.57 35.57
A
3.61 6.02 10.19 13.98 18.10
R
2.31 3.95 6.88 9.42 12.24
B
1.65 2.92 5.12 7.10 9.17
S
1.43 2.26 4.09 5.66 7.34
D
1.01 1.91 3.38 4.69 6.14
T
0.94 1.51 2.86 3.97 5.25
E
0.90 1.36 2.50 3.46 4.58
U
0.86 1.25 2.21 3.03 4.07
F or Blank
(default)
0.48
1.15
1.95
2.72
3.65
W
0.38 1.04 1.77 2.47 3.31
G
0.36 0.87 1.66 2.23 3.03
X
0.34 0.70 1.56 2.04 2.80
K
0.33 0.63 1.48 1.89 2.61
Y
0.32 0.60 1.40 1.79 2.43
Q
0.32 0.58 1.31 1.69 2.28
Z
0.30 0.56 1.22 1.62 2.17
M
0.30 0.55 1.12 1.54 2.07
N
0.30 0.54 1.02 1.47 1.97
P
0.29 0.52 0.95 1.41 1.90
CALCULATING MAXIMUM FREQUENCY
Based on the rise and fall time data given in Table 1 through 4, the maximum frequency the oscillator can operate with
a guaranteed full swing of the output voltage over temperature is calculated as follows:
1
Example:
Calculate F_max of a 1MHz ~ 80MHz device with the following condition:
• V_dd = 1.8V (Table 1)
• Capacitive Load = 30pF
• Desired T_r/f Time: = 3ns (rise/fall time option code “G”)
The F_max is 55.5000000MHz.
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