Oscillator JSO LC series Low Power (H)CMOS Output Edge Control

MEMS – Oscillator JSO LC series
Low Power (H)CMOS Output
Edge Control
The new Jauch JSO LC oscillator series offers a unique feature – Edge Control !
Edge Control is an advanced feature to control the EMI dissipation, or drive high capacitive
loads by selecting the edge slew rate of the oscillators output signal depending on the
customer’s needs.
Edge Control default selection:
The default Edge Control selection “D” can be used for most applications that should drive a
maximum load capacitance of 30pF up to ~83MHz and 15pF maximum above 83MHz.
However Edge Control offers you more flexibility to match the output driver performance to
your circuit characteristics.
Edge Control selection for fast edges:
Edge control can be configured for driving high capacitive loads > 30pF by speeding up the
signal edges vs. the default edge control setting for standard load capacitances. This may
help eliminating additional signal buffers while maintaining full output swing.
Furthermore, speeding up the signal edges may improve the clock jitter in systems with noisy
supply rails, as faster rising and falling edge times reduce the detection uncertainty of H or L
levels in circuits that receive the clock signal being superposed by system noise.
However, the supply current of the oscillator will increase slightly if fast signal edges are
selected.
Edge Control selection for slow edges:
Slow signal edges may be useful in EMI sensitive circuit environments, however it’s
important to keep an eye on the rise and fall time being required by subsequent circuits to
ensure signal integrity.
Slowing down the edge slew rate may save supply current of the oscillator as output currents
being fed into the output load reduce.
Edge Control & signal swing:
At higher frequencies, the output signal may no longer swing rail-to-rail if too slow signal
edges are configured by the combination of a certain edge control setting with an existing
output load capacitance.
Please refer to the tables below that show the maximum oscillator output frequency
depending on the actual edge control setting and the output load that would still show rail-torail output swing.
The edge control setting may be used to intentionally control the output amplitude, if rail-torail output swing is not required.
Ch. Buechler
Page 1 of 12
2014/11/05
To estimate the maximum frequency at which the signal will swing rail-to-rail, the following
formula can be used, which is based on the typical rise and fall time Tr and Tf at threshold
levels of 10% and 90%:
Fmax . 
1
1

4 xTr 4 xT f
Example 1 – limited swing at high frequency
Condition: supply voltage 3.3V, CL = 30pF, default edge control setting D=3, at 3 frequencies
3,5
3,25
3
2,75
2,5
2,25
2
1,75
4.0MHz
1,5
30.0MHz
1,25
106.250MHz
1
0,75
0,5
0,25
0
-0,25
-10,000
Ch. Buechler
0,000
10,000
20,000
30,000
Page 2 of 12
40,000
50,000
2014/11/05
Example 2 - variation of rising / falling edge at constant load vs. Edge Control setting
Condition: supply voltage 3.3V, CL = 30pF, 30.0MHz, at edge control settings 0 ~ 7
3,500
3,250
3,000
2,750
2,500
EC 0
2,250
EC 1
2,000
EC 2
1,750
EC 3
1,500
EC 4
1,250
EC 5
1,000
EC 6
0,750
EC 7
0,500
0,250
0,000
-0,250
-10,000
Ch. Buechler
0,000
10,000
20,000
Page 3 of 12
30,000
40,000
2014/11/05
Example 2 - variation of rising / falling edge at constant load vs. Edge Control setting
Condition: supply voltage 3.3V, CL = 45pF, 30.0MHz, at edge control settings 0 ~ 7
3,500
3,250
3,000
2,750
2,500
EC 0
2,250
EC 1
2,000
EC 2
1,750
EC 3
1,500
EC 4
1,250
EC 5
1,000
EC 6
0,750
EC 7
0,500
0,250
0,000
-0,250
-10,000
0,000
10,000
20,000
30,000
40,000
Default Edge Control setting and supply voltage:
As the rise and fall time at a certain edge control setting and a certain output load
capacitance also depends on the supply voltage, please refer to the edge control table that
refers to your nominal supply voltage. Please be aware that the default setting “D” varies with
the nominal supply voltage.
Ch. Buechler
Page 4 of 12
2014/11/05
Reference Edge Control Tables for JSOxxC1LC (1 ~ 110MHz) vs. Supply Voltages:
Note: Default Edge Control setting “D” at the corresponding supply voltage is highlighted.
The rise time Tr and fall time Tf is shown in [ns] at threshold levels 10% ~ 90% and
20% ~ 80% of the supply voltage at supply voltages of 3.3V / 3.0V / 2.8V / 2.5V /
1.8V.
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.3V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,33
0,35
0,40
0,45
0,75
1,20
1,80
3,70
0,45
0,50
0,55
0,60
0,65
1,30
1,70
2,60
5,20
0,65
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
96
48
(>110)
0,60 0,85 (>110) 1,30 1,80 (>110) 1,90 3,00
0,65 0,90 (>110) 1,50 2,20 (>110) 2,10 3,40
0,90 1,30 (>110) 1,65 2,50 100
2,30 3,80
1,00 1,50 (>110) 1,90 3,00 83
2,60 4,10
1,90 2,70 93
3,20 4,70 53
5,00 6,50
2,50 3,30 76
4,30 6,00 42
6,00 8,50
3,50 5,00 50
6,20 8,50 29
9,50 13,50
7,00 10,50 24
12,50 17,50 14
18,00 26,00
1,00 1,50 (>110) 1,90 3,00 83
2,60 4,10
83
74
66
61
38
29
19
9,6
61
2,50 3,50
2,80 4,20
3,20 4,50
3,70 5,00
6,00 8,40
7,50 11,00
12,00 17,00
24,00 34,00
3,70 5,00
71
60
56
50
30
23
15
7,4
50
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.0V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,35
0,38
0,45
0,50
0,90
1,30
1,90
3,90
0,50
0,55
0,60
0,65
0,75
1,40
1,90
2,75
5,70
0,75
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
91
44
(>110)
0,70 1,00 (>110) 1,40 2,10 (>110) 2,15 3,20
0,80 1,10 (>110) 1,65 2,40 104
2,40 3,60
0,93 1,40 (>110) 1,80 2,70 93
2,70 4,00
1,10 1,65 (>110) 2,00 3,10 81
3,10 4,30
2,00 2,90 86
3,40 5,00 50
5,20 7,30
2,60 3,70 68
4,50 6,50 38
6,50 9,30
3,80 5,50 45
6,70 9,50 26
10,00 14,50
7,30 11,00 23
13,50 20,00 13
19,00 28,50
1,10 1,65 (>110) 2,00 3,10 81
3,10 4,30
78
69
63
58
34
27
17
8,8
58
2,80 4,00
3,10 4,40
3,50 4,90
3,90 5,50
6,40 9,00
8,50 11,50
12,70 18,00
25,00 36,00
3,90 5,50
63
57
51
45
28
22
14
6,9
45
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,37
0,42
0,50
0,55
1,00
1,40
2,00
4,10
0,50
Ch. Buechler
0,57
0,65
0,75
0,80
1,50
2,00
2,90
6,00
0,75
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
86
42
(>110)
0,80 1,10 (>110) 1,50 2,30
0,90 1,20 (>110) 1,75 2,60
0,97 1,45 (>110) 1,90 2,85
1,20 1,80 (>110) 2,20 3,20
2,10 3,10 81
3,70 5,20
2,70 3,80 66
4,70 6,80
4,00 5,80 43
7,10 10,50
7,60 11,50 22
14,00 21,00
0,97 1,45 (>110) 1,90 2,85
Page 5 of 12
109
96
88
78
48
37
24
12
88
2,30 3,40
2,60 3,90
2,85 4,20
3,25 4,60
5,40 7,60
7,00 10,00
10,50 15,50
20,50 30,50
2,85 4,20
74
64
60
54
33
25
16
8,2
60
3,00 4,20
3,30 4,70
3,70 5,20
4,10 5,70
6,80 9,50
9,00 12,50
13,50 19,00
26,00 37,50
3,70 5,20
60
53
48
44
26
20
13
6,7
48
2014/11/05
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.5V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,40
0,45
0,55
0,60
1,10
1,45
2,20
4,30
0,55
0,60
0,70
0,80
0,90
1,60
2,20
3,30
6,40
0,80
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
76
39
(>110)
0,85 1,20 (>110) 1,70 2,60
0,95 1,30 (>110) 1,90 2,90
1,00 1,50 (>110) 2,00 3,00
1,30 2,00 (>110) 2,30 3,30
2,20 3,20 78
3,90 5,50
2,90 4,20 60
5,20 7,30
4,30 6,20 40
7,60 11,50
8,30 12,50 20
15,00 23,00
1,00 1,50 (>110) 2,00 3,00
96
86
83
76
45
34
22
11
83
2,50 3,70
2,80 4,20
3,00 4,50
3,50 5,00
5,90 8,30
7,60 11,50
11,50 17,00
22,00 33,00
3,00 4,50
68
60
56
50
30
22
15
7,6
56
3,30
3,50
4,00
4,50
7,00
10,00
15,00
28,00
4,00
4,60
5,00
5,60
6,30
10,00
14,00
21,00
40,00
5,60
54
50
45
40
25
18
12
6,3
45
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 1.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,60
0,70
0,80
0,90
1,70
2,20
3,30
6,20
0,60
0,90
1,10
1,20
1,40
2,40
3,30
5,00
9,00
0,90
(>110) 1,40 2,10 (>110) 2,40 3,40
(>110) 1,70 2,50 100
2,60 3,80
(>110) 1,90 2,80 89
3,00 4,40
(>110) 2,10 3,00 83
3,40 5,00
104
3,30 4,90 51
5,80 8,50
76
4,30 6,30 40
7,50 10,50
50
6,00 9,00 28
11,00 16,00
28
12,00 17,00 15
22,00 31,00
(>110) 1,40 2,10 (>110) 2,40 3,40
74
66
57
50
29
24
16
8,1
74
3,50
3,70
4,20
5,00
8,30
11,00
17,00
32,00
3,50
5,20
6,00
6,30
7,20
12,00
16,00
24,00
46,00
5,20
48
42
40
35
21
16
10
5,4
48
4,50
5,00
5,50
6,00
10,00
14,00
21,00
40,00
4,50
6,50
7,00
7,70
8,50
14,00
20,00
29,00
56,00
6,50
38
36
32
29
18
13
8,6
4,5
38
Note: the maximum frequency is limited by the rise & fall time (Tr & Tf). The maximum
frequency in MHz can be calculated by the formula 1/(4 x Tr) = 1/(4 x Tf), based on the
typical values in [ns] at 10% ~ 90% threshold level. At a given load capacitance CL, the
output signal will no longer swing rail to rail above the calculated frequency.
Please be aware that frequency values being calculated by the above formula may lie above
the highest programmed frequency of 110MHz for JSOxxC1LC. In that case "(>110MHz)" is
shown.
Example: if the supply voltage is 3.0V, at the default setting "D" = "3" the JSOxxC1LC is able
to drive 30pF at any programmed frequency below 81MHz. If a higher maximum frequency is
required, either reduce the load capacitance, or select an appropriate edge control setting
Ch. Buechler
Page 6 of 12
2014/11/05
Reference Edge Control Tables for JSOxxC2LC (115 ~ 137MHz) vs. Supply Voltage:
Note: Default Edge Control setting “D” at the corresponding supply voltage is highlighted.
The rise time Tr and fall time Tf is shown in [ns] at threshold levels 10% ~ 90% and
20% ~ 80% of the supply voltage at supply voltages of 3.3V / 3.0V / 2.8V / 2.5V /
1.8V.
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.3V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,33
0,35
0,40
0,45
0,75
1,20
1,80
3,70
0,45
0,50
0,55
0,60
0,65
1,30
1,70
2,60
5,20
0,65
(>137)
(>137)
(>137)
(>137)
(>137)
(>137)
(<115)
(<115)
(>137)
0,60 0,85 (>137) 1,30 1,80 (>137) 1,90 3,00 (<115) 2,50 3,50 (<115)
0,65 0,90 (>137) 1,50 2,20 (<115) 2,10 3,40 (<115) 2,80 4,20 (<115)
0,90 1,30 (>137) 1,65 2,50 (<115) 2,30 3,80 (<115) 3,20 4,50 (<115)
1,00 1,50 (>137) 1,90 3,00 (<115) 2,60 4,10 (<115) 3,70 5,00 (<115)
1,90 2,70 (<115) 3,20 4,70 (<115) 5,00 6,50 (<115) 6,00 8,40 (<115)
2,50 3,30 (<115) 4,30 6,00 (<115) 6,00 8,50 (<115) 7,50 11,00 (<115)
3,50 5,00 (<115) 6,20 8,50 (<115) 9,50 13,50 (<115) 12,00 17,00 (<115)
7,00 10,50 (<115) 12,50 17,50 (<115) 18,00 26,00 (<115) 24,00 34,00 (<115)
1,00 1,50 (>137) 1,90 3,00 (<115) 2,60 4,10 (<115) 3,70 5,00 (<115)
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.0V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,35
0,38
0,45
0,50
0,90
1,30
1,90
3,90
0,50
0,55
0,60
0,65
0,75
1,40
1,90
2,75
5,70
0,75
(>137)
(>137)
(>137)
(>137)
(>137)
132
(<115)
(<115)
(>137)
0,70 1,00 (>137) 1,40 2,10 119
2,15 3,20 (<115) 2,80 4,00 (<115)
0,80 1,10 (>137) 1,65 2,40 (<115) 2,40 3,60 (<115) 3,10 4,40 (<115)
0,93 1,40 (>137) 1,80 2,70 (<115) 2,70 4,00 (<115) 3,50 4,90 (<115)
1,10 1,65 (>137) 2,00 3,10 (<115) 3,10 4,30 (<115) 3,90 5,50 (<115)
2,00 2,90 (<115) 3,40 5,00 (<115) 5,20 7,30 (<115) 6,40 9,00 (<115)
2,60 3,70 (<115) 4,50 6,50 (<115) 6,50 9,30 (<115) 8,50 11,50 (<115)
3,80 5,50 (<115) 6,70 9,50 (<115) 10,00 14,50 (<115) 12,70 18,00 (<115)
7,30 11,00 (<115) 13,50 20,00 (<115) 19,00 28,50 (<115) 25,00 36,00 (<115)
1,10 1,65 (>137) 2,00 3,10 (<115) 3,10 4,30 (<115) 3,90 5,50 (<115)
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,37
0,42
0,50
0,55
1,00
1,40
2,00
4,10
0,50
Ch. Buechler
0,57
0,65
0,75
0,80
1,50
2,00
2,90
6,00
0,75
(>137)
(>137)
(>137)
(>137)
(>137)
125
(<115)
(<115)
(>137)
0,80 1,10 (>137) 1,75 2,60 (<115) 2,30 3,40 (<115) 3,00 4,20 (<115)
0,90 1,20 (>137) 1,75 2,60 (<115) 2,60 3,90 (<115) 3,30 4,70 (<115)
0,97 1,45 (>137) 1,90 2,85 (<115) 2,85 4,20 (<115) 3,70 5,20 (<115)
1,20 1,80 (>137) 2,20 3,20 (<115) 3,25 4,60 (<115) 4,10 5,70 (<115)
2,10 3,10 (<115) 3,70 5,20 (<115) 5,40 7,60 (<115) 6,80 9,50 (<115)
2,70 3,80 (<115) 4,70 6,80 (<115) 7,00 10,00 (<115) 9,00 12,50 (<115)
4,00 5,80 (<115) 7,10 10,50 (<115) 10,50 15,50 (<115) 13,50 19,00 (<115)
7,60 11,50 (<115) 14,00 21,00 (<115) 20,50 30,50 (<115) 26,00 37,50 (<115)
0,97 1,45 (>137) 1,90 2,85 (<115) 2,85 4,20 (<115) 3,70 5,20 (<115)
Page 7 of 12
2014/11/05
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.5V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,40
0,45
0,55
0,60
1,10
1,45
2,20
4,30
0,55
0,60
0,70
0,80
0,90
1,60
2,20
3,30
6,40
0,80
(>137)
(>137)
(>137)
(>137)
(>137)
(<115)
(<115)
(<115)
(>137)
0,85 1,20 (>137) 1,70 2,60 (<115) 2,50 3,70 (<115) 3,30 4,60 (<115)
0,95 1,30 (>137) 1,90 2,90 (<115) 2,80 4,20 (<115) 3,50 5,00 (<115)
1,00 1,50 (>137) 2,00 3,00 (<115) 3,00 4,50 (<115) 4,00 5,60 (<115)
1,30 2,00 125
2,30 3,30 (<115) 3,50 5,00 (<115) 4,50 6,30 (<115)
2,20 3,20 (<115) 3,90 5,50 (<115) 5,90 8,30 (<115) 7,00 10,00 (<115)
2,90 4,20 (<115) 5,20 7,30 (<115) 7,60 11,50 (<115) 10,00 14,00 (<115)
4,30 6,20 (<115) 7,60 11,50 (<115) 11,50 17,00 (<115) 15,00 21,00 (<115)
8,30 12,50 (<115) 15,00 23,00 (<115) 22,00 33,00 (<115) 28,00 40,00 (<115)
1,00 1,50 (>137) 2,00 3,00 (<115) 3,00 4,50 (<115) 4,00 5,60 (<115)
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 1.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,60
0,70
0,80
0,90
1,70
2,20
3,30
6,20
0,60
0,90
1,10
1,20
1,40
2,40
3,30
5,00
9,00
0,90
(>137) 1,40 2,10
(>137) 1,70 2,50
(>137) 1,90 2,80
(>137) 2,10 3,00
(<115) 3,30 4,90
(<115) 4,30 6,30
(<115) 6,00 9,00
(<115) 12,00 17,00
(>137) 1,40 2,10
119
2,40 3,40 (<115)
(<115) 2,60 3,80 (<115)
(<115) 3,00 4,40 (<115)
(<115) 3,40 5,00 (<115)
(<115) 5,80 8,50 (<115)
(<115) 7,50 10,50 (<115)
(<115) 11,00 16,00 (<115)
(<115) 22,00 31,00 (<115)
119
2,40 3,40 (<115)
3,5
3,7
4,2
5,0
8,3
11,0
17,0
32,0
3,5
5,2
6,0
6,3
7,2
12,0
16,0
24,0
46,0
5,2
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
4,5
5,0
5,5
6,0
10,0
14,0
21,0
40,0
4,5
6,5
7,0
7,7
8,5
14,0
20,0
29,0
56,0
6,5
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
(<115)
Note: the maximum frequency is limited by the rise & fall time (Tr & Tf). The maximum
frequency in MHz can be calculated by the formula 1/(4 x Tr) = 1/(4 x Tf), based on the
typical values in [ns] at 10% ~ 90% threshold level. At a given load capacitance CL, the
output signal will no longer swing rail to rail above the calculated frequency.
Please be aware that frequency values being calculated by the above formula may lie above
or below the programmed frequency range 115 ~ 137MHz for JSOxxC2LC. In that case
"(<115MHz)" or "(>137MHz)" is shown. At edge control settings and load capacitances where
"(<115MHz)" is shown, the output signal will not swing rail to rail.
Example: if the supply voltage is 3.0V, at the default setting "D" = "3" the JSOxxC2LC is able
to drive 15pF at any programmed frequency in the range of 115 ~ 137MHz.
If the supply voltage is 3.0V and the load is 30pF, the recommended edge control setting is
"0". If a higher edge control setting was used at 30pF, the output signal will not swing rail to
rail.
Ch. Buechler
Page 8 of 12
2014/11/05
Reference Edge Control Tables for JSOxxC1LC (1 ~ 110MHz) at variable Supply Voltage:
Note: Default Edge Control setting “D” for the variable supply voltage range 2.5V ~ 3.3V is
highlighted. The rise time Tr and fall time Tf is shown in [ns] at threshold levels 10% ~
90% and 20% ~ 80% of the supply voltage at reference supply voltages of 3.3V / 3.0V
/ 2.8V / 2.5V.
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.3V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,33
0,35
0,40
0,45
0,75
1,20
1,80
3,70
0,45
0,50
0,55
0,60
0,65
1,30
1,70
2,60
5,20
0,65
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
96
48
(>110)
0,60 0,85 (>110) 1,30 1,80 (>110) 1,90 3,00
0,65 0,90 (>110) 1,50 2,20 (>110) 2,10 3,40
0,90 1,30 (>110) 1,65 2,50 100
2,30 3,80
1,00 1,50 (>110) 1,90 3,00 83
2,60 4,10
1,90 2,70 93
3,20 4,70 53
5,00 6,50
2,50 3,30 76
4,30 6,00 42
6,00 8,50
3,50 5,00 50
6,20 8,50 29
9,50 13,50
7,00 10,50 24
12,50 17,50 14
18,00 26,00
1,00 1,50 (>110) 1,90 3,00 83
2,60 4,10
83
74
66
61
38
29
19
9,6
61
2,50 3,50
2,80 4,20
3,20 4,50
3,70 5,00
6,00 8,40
7,50 11,00
12,00 17,00
24,00 34,00
3,70 5,00
71
60
56
50
30
23
15
7,4
50
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.0V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,35
0,38
0,45
0,50
0,90
1,30
1,90
3,90
0,50
0,55
0,60
0,65
0,75
1,40
1,90
2,75
5,70
0,75
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
91
44
(>110)
0,70 1,00 (>110) 1,40 2,10 (>110) 2,15 3,20
0,80 1,10 (>110) 1,65 2,40 104
2,40 3,60
0,93 1,40 (>110) 1,80 2,70 93
2,70 4,00
1,10 1,65 (>110) 2,00 3,10 81
3,10 4,30
2,00 2,90 86
3,40 5,00 50
5,20 7,30
2,60 3,70 68
4,50 6,50 38
6,50 9,30
3,80 5,50 45
6,70 9,50 26
10,00 14,50
7,30 11,00 23
13,50 20,00 13
19,00 28,50
1,10 1,65 (>110) 2,00 3,10 81
3,10 4,30
78
69
63
58
34
27
17
8,8
58
2,80 4,00
3,10 4,40
3,50 4,90
3,90 5,50
6,40 9,00
8,50 11,50
12,70 18,00
25,00 36,00
3,90 5,50
63
57
51
45
28
22
14
6,9
45
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,37
0,42
0,50
0,55
1,00
1,40
2,00
4,10
0,55
Ch. Buechler
0,57
0,65
0,75
0,80
1,50
2,00
2,90
6,00
0,80
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
86
42
(>110)
0,80 1,10 (>110) 1,50 2,30
0,90 1,20 (>110) 1,75 2,60
0,97 1,45 (>110) 1,90 2,85
1,20 1,80 (>110) 2,20 3,20
2,10 3,10 81
3,70 5,20
2,70 3,80 66
4,70 6,80
4,00 5,80 43
7,10 10,50
7,60 11,50 22
14,00 21,00
1,20 1,80 (>110) 2,20 3,20
Page 9 of 12
109
96
88
78
48
37
24
12
78
2,30 3,40
2,60 3,90
2,85 4,20
3,25 4,60
5,40 7,60
7,00 10,00
10,50 15,50
20,50 30,50
3,25 4,60
74
64
60
54
33
25
16
8,2
54
3,00 4,20
3,30 4,70
3,70 5,20
4,10 5,70
6,80 9,50
9,00 12,50
13,50 19,00
26,00 37,50
4,10 5,70
60
53
48
44
26
20
13
6,7
44
2014/11/05
JSOxxC1LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.5V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,40
0,45
0,55
0,60
1,10
1,45
2,20
4,30
0,60
0,60
0,70
0,80
0,90
1,60
2,20
3,30
6,40
0,90
(>110)
(>110)
(>110)
(>110)
(>110)
(>110)
76
39
(>110)
0,85 1,20 (>110) 1,70 2,60
0,95 1,30 (>110) 1,90 2,90
1,00 1,50 (>110) 2,00 3,00
1,30 2,00 (>110) 2,30 3,30
2,20 3,20 78
3,90 5,50
2,90 4,20 60
5,20 7,30
4,30 6,20 40
7,60 11,50
8,30 12,50 20
15,00 23,00
1,30 2,00 (>110) 2,30 3,30
96
86
83
76
45
34
22
11
76
2,50 3,70
2,80 4,20
3,00 4,50
3,50 5,00
5,90 8,30
7,60 11,50
11,50 17,00
22,00 33,00
3,50 5,00
68
60
56
50
30
22
15
7,6
50
3,30
3,50
4,00
4,50
7,00
10,00
15,00
28,00
4,50
4,60
5,00
5,60
6,30
10,00
14,00
21,00
40,00
6,30
54
50
45
40
25
18
12
6,3
40
Note: the maximum frequency is limited by the rise & fall time (Tr & Tf). The maximum
frequency in MHz can be calculated by the formula 1/(4 x Tr) = 1/(4 x Tf), based on the
typical values in [ns] at 10% ~ 90% threshold level. At a given load capacitance CL, the
output signal will no longer swing rail to rail above the calculated frequency.
Please be aware that frequency values being calculated by the above formula may lie above
the highest programmed frequency of 110MHz for JSOxxC1LC. In that case "(>110MHz)" is
shown.
Example: if the supply voltage is variable (2.5V ~ 3.3V), at the default setting "D" = "3" and
the lowest supply voltage of 2.5V the JSOxxC1LC is able to drive 30pF at any programmed
frequency below 76MHz. If a higher maximum frequency is required, either reduce the load
capacitance, or select an appropriate edge control setting.
Ch. Buechler
Page 10 of 12
2014/11/05
Reference Edge Control Tables for JSOxxC2LC (115 ~ 137MHz) at variable Supply Voltage:
Note: Default Edge Control setting “D” for the variable supply voltage range 2.5V ~ 3.3V is
highlighted. The rise time Tr and fall time Tf is shown in [ns] at threshold levels 10% ~
90% and 20% ~ 80% of the supply voltage at reference supply voltages of 3.3V / 3.0V
/ 2.8V / 2.5V.
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.3V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,33
0,35
0,40
0,45
0,75
1,20
1,80
3,70
0,45
0,50
0,55
0,60
0,65
1,30
1,70
2,60
5,20
0,65
(>137)
(>137)
(>137)
(>137)
(>137)
(>137)
(<115)
(<115)
(>137)
0,60 0,85 (>137) 1,30 1,80 (>137) 1,90 3,00 (<115) 2,50 3,50 (<115)
0,65 0,90 (>137) 1,50 2,20 (<115) 2,10 3,40 (<115) 2,80 4,20 (<115)
0,90 1,30 (>137) 1,65 2,50 (<115) 2,30 3,80 (<115) 3,20 4,50 (<115)
1,00 1,50 (>137) 1,90 3,00 (<115) 2,60 4,10 (<115) 3,70 5,00 (<115)
1,90 2,70 (<115) 3,20 4,70 (<115) 5,00 6,50 (<115) 6,00 8,40 (<115)
2,50 3,30 (<115) 4,30 6,00 (<115) 6,00 8,50 (<115) 7,50 11,00 (<115)
3,50 5,00 (<115) 6,20 8,50 (<115) 9,50 13,50 (<115) 12,00 17,00 (<115)
7,00 10,50 (<115) 12,50 17,50 (<115) 18,00 26,00 (<115) 24,00 34,00 (<115)
1,00 1,50 (>137) 1,90 3,00 (<115) 2,60 4,10 (<115) 3,70 5,00 (<115)
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 3.0V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,35
0,38
0,45
0,50
0,90
1,30
1,90
3,90
0,50
0,55
0,60
0,65
0,75
1,40
1,90
2,75
5,70
0,75
(>137)
(>137)
(>137)
(>137)
(>137)
132
(<115)
(<115)
(>137)
0,70 1,00 (>137) 1,40 2,10 119
2,15 3,20 (<115) 2,80 4,00 (<115)
0,80 1,10 (>137) 1,65 2,40 (<115) 2,40 3,60 (<115) 3,10 4,40 (<115)
0,93 1,40 (>137) 1,80 2,70 (<115) 2,70 4,00 (<115) 3,50 4,90 (<115)
1,10 1,65 (>137) 2,00 3,10 (<115) 3,10 4,30 (<115) 3,90 5,50 (<115)
2,00 2,90 (<115) 3,40 5,00 (<115) 5,20 7,30 (<115) 6,40 9,00 (<115)
2,60 3,70 (<115) 4,50 6,50 (<115) 6,50 9,30 (<115) 8,50 11,50 (<115)
3,80 5,50 (<115) 6,70 9,50 (<115) 10,00 14,50 (<115) 12,70 18,00 (<115)
7,30 11,00 (<115) 13,50 20,00 (<115) 19,00 28,50 (<115) 25,00 36,00 (<115)
1,10 1,65 (>137) 2,00 3,10 (<115) 3,10 4,30 (<115) 3,90 5,50 (<115)
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.8V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,37
0,42
0,50
0,55
1,00
1,40
2,00
4,10
0,55
Ch. Buechler
0,57
0,65
0,75
0,80
1,50
2,00
2,90
6,00
0,80
(>137)
(>137)
(>137)
(>137)
(>137)
125
(<115)
(<115)
(>137)
0,80 1,10 (>137) 1,50 2,30 (<115) 2,30 3,40 (<115) 3,00 4,20 (<115)
0,90 1,20 (>137) 1,75 2,60 (<115) 2,60 3,90 (<115) 3,30 4,70 (<115)
0,97 1,45 (>137) 1,90 2,85 (<115) 2,85 4,20 (<115) 3,70 5,20 (<115)
1,20 1,80 (>137) 2,20 3,20 (<115) 3,25 4,60 (<115) 4,10 5,70 (<115)
2,10 3,10 (<115) 3,70 5,20 (<115) 5,40 7,60 (<115) 6,80 9,50 (<115)
2,70 3,80 (<115) 4,70 6,80 (<115) 7,00 10,00 (<115) 9,00 12,50 (<115)
4,00 5,80 (<115) 7,10 10,50 (<115) 10,50 15,50 (<115) 13,50 19,00 (<115)
7,60 11,50 (<115) 14,00 21,00 (<115) 20,50 30,50 (<115) 26,00 37,50 (<115)
1,20 1,80 (>137) 1,90 2,85 (<115) 2,85 4,20 (<115) 3,70 5,20 (<115)
Page 11 of 12
2014/11/05
JSOxxC2LC: Rise/Fall Time Typ [ns] and max. Frequency [MHz] at VDC = 2.5V
no load (5pF)
CL = 15pF
CL = 30pF
CL = 45pF
CL = 60pF
edge 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max. 20% 10% max.
contr. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq. 80% 90% freq.
0
1
2
3
4
5
6
7
D
0,40
0,45
0,55
0,60
1,10
1,45
2,20
4,30
0,60
0,60
0,70
0,80
0,90
1,60
2,20
3,30
6,40
0,90
(>137)
(>137)
(>137)
(>137)
(>137)
(<115)
(<115)
(<115)
(>137)
0,85 1,20
0,95 1,30
1,00 1,50
1,30 2,00
2,20 3,20
2,90 4,20
4,30 6,20
8,30 12,50
1,30 2,00
(>137) 1,70 2,60 (<115) 2,50 3,70 (<115) 3,30 4,60 (<115)
(>137) 1,90 2,90 (<115) 2,80 4,20 (<115) 3,50 5,00 (<115)
(>137) 2,00 3,00 (<115) 3,00 4,50 (<115) 4,00 5,60 (<115)
125
2,30 3,30 (<115) 3,50 5,00 (<115) 4,50 6,30 (<115)
(<115) 3,90 5,50 (<115) 5,90 8,30 (<115) 7,00 10,00 (<115)
(<115) 5,20 7,30 (<115) 7,60 11,50 (<115) 10,00 14,00 (<115)
(<115) 7,60 11,50 (<115) 11,50 17,00 (<115) 15,00 21,00 (<115)
(<115) 15,00 23,00 (<115) 22,00 33,00 (<115) 28,00 40,00 (<115)
125
2,00 3,00 (<115) 3,00 4,50 (<115) 4,00 5,60 (<115)
Note: the maximum frequency is limited by the rise & fall time (Tr & Tf). The maximum
frequency in MHz can be calculated by the formula 1/(4 x Tr) = 1/(4 x Tf), based on the
typical values in [ns] at 10% ~ 90% threshold level. At a given load capacitance CL, the
output signal will no longer swing rail to rail above the calculated frequency.
Please be aware that frequency values being calculated by the above formula may lie above
or below the programmed frequency range 115 ~ 137MHz for JSOxxC2LC. In that case
"(<115MHz)" or "(>137MHz)" is shown. At edge control settings and load capacitances where
"(<115MHz)" is shown, the output signal will not swing rail to rail.
Example: if the supply voltage is variable (2.5V ~ 3.3V), the load is 15pF and edge control is
set at default "D" = "3", the maximum frequency is 125MHz at the lowest variable voltage
2.5V. If a higher maximum frequency is required, either reduce the load capacitance, or
select an appropriate edge control setting.
Ch. Buechler
Page 12 of 12
2014/11/05