參數(shù)資料
型號(hào): DFA20-MHFREQN2/5
廠商: FORDAHL SA
元件分類(lèi): XO, clock
英文描述: TCXO, CLOCK, 25 MHz - 40 MHz, HCMOS OUTPUT
文件頁(yè)數(shù): 1/1頁(yè)
文件大小: 136K
代理商: DFA20-MHFREQN2/5
FREQUENCY CONTROL PRODUCTS
TYPE
DFA 20
REVISION
01
CHECKED
JYA
DATE
24.01.2002
PAGE
57
HI GH STABI L I T Y SMAL L SI ZE TCXO
DFA 20
OPTIONAL EXTERNAL VOLTAGE CONTROL
VERY HIGH OVERALL STABILITY
STANDARD PACKAGE
LOW AGEING
Function
DFA 20
Vcc
1
Output
2
GND
3
GND/Pot in/Vco
4
GND
5
TYPE
DFA 20-H
DFA 20-MH
DFA 20-S
DFA 20-O
Frequency Range (MHz)
1 to 27
25 to 40
4 to 27
1 to 27
ELECTRICAL SPECIFICATIONS
supply voltage
5 to 15 V ± 5 %
supply current ( no load)
≤ 25 MHz
≤ 7 mA
≤ 20 mA
≤ 7 mA
> 25 MHz
≤ 30 mA
≤ 10 mA
clipped sine
output load
HCMOS 15 pF or 2 TTL
Sine 50
± 10 %
20 k
//5 pF
duty cycle @ 2.5 V
≤ 40/60...60/40 %
rise/fall times
≤ 10 ns
high/low levels or output amplitude
≥ 3.5/ ≤ 0.5 V
0 dBm ± 2 dB
≥ 2 V p-p
start-up
≤ 10 ms
FREQUENCY STABILITY
detailed tolerances [ ppm ]
temperature
model
stability versus :
types
range
code
temperature
Vcc ± 5 %
load ± 10 %
ageing
0 to 50°C A0.5
≤ ± 0.5
-10 to 60°C D1
≤ ± 1
C1
≤ ± 1
-20 to 70°C
C2
≤ ± 2
-30 to 75°C N2
≤ ± 2
all types
-40 to 85°C E3
≤ ± 3
≤ ± 0.1
≤ ± 1
Factory calibration if no trimming option
≤ ± 1 ppm
remarks
ageing is 1
st year at 25°C
OPTIONS
CODE
external voltage
V
2.5 ± 2 V
≥ ± 5 ppm , positive slope
internal trimmer
A
≥ ± 5 ppm
external potentiometer
Y
10 k
≥ ± 5 ppm (not available with internal trimmer)
ORDERING CODE
type + option code + frequency + model code/ voltage value
Example
DFA 20-HA 12.288 MHz N2/5
9.7±0.1
0.45
5.1
0.4±0
.1
1
2
4
5
3
20.3±0.1
7.62 7.62
15.24
Option Y
10k
Pot in
Gnd
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