LT1394IS8 Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LT1394IS8 Datasheet PDF : 16 Pages
| |||
LT1394
APPLICATIONS INFORMATION
5.8M*
1µF
MV-209
VARACTOR
DIODE
2M
2M
A1
LT1077
2k
5V
10M
390Ω
0.01µF
+
10MHz
LT1394
–
2k
0.068µF
0.01µF
BAT-85
4.7k
50k
1µF
1M*
1M*
470k*
5V
226Ω*
LM134
10mV/°C
10k*
10MHz
0.05ppm/°C
100k
LT1004-1.2
1M
XTAL AT-CUT, 35° 25′ ANGLE
* 1% FILM RESISTOR
FREQ SET
1394 F05
Figure 5. Temperature-Compensated 10MHz Crystal Oscillator.
Temperature-Dependent Varactor Bias Reduces Drift by 20:1
0
–10
COMPENSATED
≈ 0.05ppm/°C
–20
–30
–40
–50
–60
–70
0
UNCOMPENSATED
(VARACTOR CORRECTION
DISABLED) –1ppm/°C
10 20 30 40 50
TEMPERATURE (°C)
60 70
1394 F06
Figure 6. Figure 5’s Compensated vs Uncompensated
Temperature Dependence. First Order Compensation
Reduces Oscillator Drift to 0.05ppm/°C
200pF
2k
5V
+
A2
–1/2 LT1126
10k
200Ω
+INPUT
–INPUT
–
10k
A3
1/2 LT1126
+
2k
–5V
200pF
5V
+
+ 1µF 1k
A1
LM733
–A = 100
–
1µF 1k
–5V
+
– LT1394
OUTPUT
1394 F07
Figure 7. Parallel Preamplified Paths Allow 18ns Comparator
Response to 500µV Overdrive
10
Share Link: 