Datasheet

LTC6957-1/LTC6957-2/
LTC6957-3/LTC6957-4
33
6957f
For more information www.linear.com/LTC6957-1
Crystal Oscillator
6957 TA02b
–170
–140
–130
–150
–160
–120
–110
–100
–80
–60
–40
–90
–70
–50
OFFSET FREQUENCY (Hz)
1 10 100 1k 10k 100k 1M
MEASURED ON AGILENT E5052A
10 CORRELATIONS
1Hz –47.34dBc/Hz
10Hz –82dBc/Hz
100Hz –116.36dBc/Hz
1kHz –148.03dBc/Hz
10kHz –154.84dBc/Hz
100kHz –157.58dBc/Hz
1MHz –157.99dBc/Hz
PHASE NOISE (dBc/ Hz)
Typical applicaTions
Total Phase Noise of 10MHz Crystal Oscillator
6957 TA02a
FILTA
FILTB
IN
+
IN
–
SD1V
+
V
+
5V
IN
+
3.3V
V
+
V
+
11
10
1
6
3
4
SD2GND
LTC6957-3
LT1761-3.3V
TO ALL V
+
POINTS
0.01µF
OUT
BP
OUT TO 50Ω
0.3V
P-P
SQUARE WAVE
V
DD
OUT1
OUT2
GNDOUT
450Ω
100Ω
10MHz
AT CUT
2k
75pF
150Ω
1µF
30pF
0.1µF
50MHz
BANDWIDTH
9
8
75
122
10µF
0.1µF