SM7745GEX Datasheet, PDF (4/8 Pages) Pletronics, Inc. – 1.8 V CMOS Clock Oscillators

SM77G Series 1.8 V
CMOS Clock Oscillators
Feb 2008
Electrical Specification for 1.80V +_10% over the specified temperature range
Item
Typ Max Unit
Output T_RISE and T_FALL
1.5
3
nS
1.7
3.5
nS
4
7
nS
2
7
nS
6
12
nS
6
11
nS
V_CC Supply Current (I_CC)
2
4
mA
2.5
5
mA
5
8
mA
-
18
mA
2.5
4.5
mA
3
5
mA
4
8
mA
10
20
mA
2.5
4
mA
4
6
mA
5
9
mA
13
23
mA
Specifications with Pad 1 E/D open circuit
Condition
< 35 MHz
> 35 MHz
C_LOAD = 15 pF
20% to 80% of V_CC
See Load Circuit
< 35 MHz
> 35 MHz
C_LOAD = 30 pF
20% to 80% of V_CC
See Load Circuit
< 35 MHz
> 35 MHz and < 45 MHz
C_LOAD = 50 pF
20% to 80% of V_CC
See Load Circuit
< 8 MHz
> 8 MHz and < 16 MHz
C_LOAD = 15 pF
> 16 MHz and < 35 MHz
> 35 MHz
< 8 MHz
> 8 MHz and < 16 MHz
C_LOAD = 30 pF
> 16 MHz and < 35 MHz
> 35 MHz
< 8 MHz
> 8 MHz and < 16 MHz
C_LOAD = 50 pF
> 16 MHz and < 35 MHz
> 35 MHz and < 45 MHz
Note: Not specified for 50 pF loads above 45 MHz
Typical phase noise plot for 5 oscillators at different output frequencies.
0
-20
-40
-60
19.4M
-80
25M
32M
-100
50M
66.7M
-120
-140
-160
-180
10
1,000
100,000
10,000,000
Frequency (Hz)
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425-776-1880
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