546SA-38.880 [CTS]
Oscillator;型号: | 546SA-38.880 |
厂家: | CTS |
描述: | Oscillator |
文件: | 总2页 (文件大小:31K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Preliminary Specification
Rev. X01
CTS
¨ Frequency Stability to Stratum 3 of GR-1244
¨ Patented Voltage Tuned Thermistor Network
¨ Very Low Phase Jitter: < 1 pSec
¨ +3.3Vdc or +5.0Vdc Operation
Model 546
“VTTN ” Series
Stratum 3 TCXO
¨ Precision Low Aging “AT” Cut Crystal
¨ Compatible with Semtech SETS Chipsets
¨ Surface Mount Pkg. – Matches Vectron Z5
Electrical Characteristics
Parameter
Sym
Conditions
Min
Typical
Max
Unit
Power
Requirements
Power Supply
Vcc
3.135
4.75
3.30
5.0
12
3.465
5.25
Note 1
Vdc
Vdc
mA
mA
± 5%
±5%
Vcc=Max. (3.3Vdc)
Std. Load (5.0Vdc)
546L
546S
Supply Current
Icc
15
Frequency
Stabilities
Center Frequency
fnom
1.25
38.88
20
38.88
MHz
19.44
12.8
10
Initial Tolerance
Freq. vs. Temp.
Freq. vs. Voltage
fcal
Ta=+25°C
±0.75
ppm
ppm
ppm
ppm
ppm
Df/DTemp
±0.25
± 0.1
±2.5
Vcc ±5%
Df/DVcc
Df/DTime
Df/24Hr
Freq. vs Time
(Aging)
24 Hour Holdover
Stability
20 years
Inclusive of Temp.,
Supply Variation
and 24Hrs. Aging
All Cond. for 20
±0.30
±0.37
±4.6
Total Free-
ppm
Df/Life
Running Accuracy
Yrs. (Ref. to fnom
)
Waveform:
CMOS Output
Symmetry
Amplitude
Sym
Vo
@ 50% Level
40
0.8Vcc
50
60
%
V
V
Logic “1”
Logic “0”
20% to 80%
Output to Ground
Offset = 100HZ
1KHz
0.3
6
Rise/Fall Times
Load
Phase Noise
tr, tf
RL
Pn
nSec
10KW ½½ 15pF
-115
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
-130
-140
-150
10KHz
100KHz
Phase Jitter
12KHz to 20MHz
Bandwidth
1.0
pSec RMS
Note 1: Maximum Current will vary with Frequency
Preliminary Specification
Rev. X01
Model 546
“VTTN ” Series
Stratum 3 TCXO
CTS
1.15
1.00
Pin #
Function
1
2
3
4
5
RF Output
Supply Voltage
Ground
No Connect
Ground
0.390 MAX
1.00
3
2
1
5
4
0.25
0.40
0.40
Environmental / Mechanical Specifications
Storage Temperature:
Reflow Soldering:
Shock:
-55° to +125°C
30 Sec. > 200°C, 240°C Peak Max.
50 G’s, 11 mSec. Pulse (3 Shocks/Axis)
10 G’s peak, 10 to 500 Hz
Vibration:
Case:
Seal:
High-Temp FR-4 Base, Nickel/Silver Cover
Non-Hermetic
Ordering Information
Model 546
___.________ Example: 546SA-19.440
Frequency in MHz
Supply Voltage
L = +3.3Vdc
S = +5.0Vdc
Oper. Temp. Range
A = -5° to +50°C
B = 0° to +70°C
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