ASTMLP Datasheet, PDF (5/13 Pages) Abracon Corporation – Consumer electronics

Low power, Programmable SMD MEMS Oscillator
ASTMLP
ASTMLP
2.0 x 1.6 x 0.75mm; 2.5 x 2.0 x 0.75mm;
Pb RoHS/RoHS II compliant 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 4: V_dd=3.0V Rise/Fall Times for Specific C_LOAD
(a) Output Frequency: 1MHz – 110MHz
Rise/Fall Time Typ. (ns)
Drive Strength
C_LOAD
Options
5pF 15pF 30pF 45pF
L
3.60 7.21 11.97 18.74
A
1.84 3.71 6.72 9.86
R
1.22 2.46 4.54 6.76
B
0.89 1.92 3.39 5.20
T or Blank
(default)
0.51 1.00 1.97 3.07
E
0.38 0.92 1.72 2.71
U
0.30 0.83 1.55 2.40
F
0.27 0.76 1.39 2.16
60pF
24.30
12.68
8.62
6.64
3.90
3.51
3.13
2.85
(b) Output Frequency: 115MHz – 137MHz
Rise/Fall Time Typ. (ns)
Drive Strength
C_LOAD
Options
5pF 15pF 30pF
R
1.22 N/A N/A
B
0.89 N/A N/A
T or Blank
(default)
0.51 1.00 ^N/A
E
0.38 0.92 N/A
U
0.30 0.83 N/A
F
0.27 0.76 1.39
Table 5: V_dd=3.3V Rise/Fall Times for Specific C_LOAD
(a) Output Frequency: 1MHz – 110MHz
Rise/Fall Time Typ. (ns)
Drive Strength
C_LOAD
Options
5pF 15pF 30pF 45pF
L
3.39 6.88 11.63 17.56
A
1.74 3.50 6.38 8.89
R
1.16 2.33 4.29 6.04
B
0.81 1.82 3.22 4.52
T or Blank
(default)
0.46 1.00 1.86 2.60
E
0.33 0.87 1.64 2.30
U
0.28 0.79 1.46 2.05
F
0.25 0.72 1.31 1.83
60pF
23.59
12.19
8.34
6.33
3.84
3.35
2.93
2.61
(b) Output Frequency: 115MHz – 137MHz
Rise/Fall Time Typ. (ns)
Drive Strength
C_LOAD
Options
5pF 15pF 30pF
R
1.16 N/A N/A
B
0.81 N/A N/A
T or Blank
(default)
0.46 1.00 ^N/A
E
0.33 0.87 N/A
U
0.28 0.79 1.46
F
0.25 0.72 1.31
CALCULATING MAXIMUM FREQUENCY
Based on the rise and fall time data given in Table 1 through 5, 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 ~ 110MHz device with the following condition:
º V_dd = 1.8V (Table 1)
º Capacitive Load = 30pF
º Desired T_r/f Time: = 3ns (rise/fall time option code “E”)
The F_max is 66.66666MHz.
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