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参数资料
| 型号： | DFAS7-KHZFREQ2D1 |
| 厂商： | FORDAHL SA |
| 元件分类： | XO, clock |
| 英文描述： | TCXO, CLOCK, 30 MHz - 50 MHz, HCMOS OUTPUT |
| 文件页数： | 1/1页 |
| 文件大小： | 24K |
| 代理商： | DFAS7-KHZFREQ2D1 |
FREQUENCY CONTROL PRODUCTS
web site : http://www.fordahl.com
SURF A C E M O UNT M I N I A T U R E TCXO
TYPES DFA S7-KHZ ( 5 V) & DFA S7-LHZ (3.3 V)
RECOMMENDED FOR NEW DESIGNS
SURFACE MOUNTABLE PACKAGE
5 V OR 3.3 V SUPPLY VOLTAGE
TIGHT STABILITY
Option Y
Function
DFA S7
NC / Pot in / Vco
1
GND
2
N / C
3
Output
4
Vcc
5
E / D
6
TYPE
DFA S7-KHZ
DFA S7-KOZ
DFA S7-LHZ
DFA S7-LOZ
Frequency Range
2 to 50 MHz
2 to 45 MHz
ELECTRICAL SPECIFICATIONS
supply voltage
5 V ± 5 %
3.3 V ± 5 %
supply current ( no load)
≤ 25 MHz
≤ 20 mA
≤ 10 mA
≤ 35 MHz
≤ 30 mA
≤ 15 mA
> 35 MHz
≤ 40 mA
≤ 20 mA
HCMOS 15 pF
clipped sine
HCMOS 15 pF
clipped sine
output load
or 2 TTL
20k
//5 pF
or 1 TTL
20k
//5 pF
duty cycle @ 2.5V (LH @ 1.65 V)
≤ 45/55...55/45 %
rise/fall times (10 to 90 %)
≤ 10 ns
high/low levels or output amplitude
≥ 3.5 V/ ≤ 0.5 V
≥ 2 V p-p
≥ 2.7 V/ ≤ 0.2 V
≥ 1.5 V p-p
start-up
≤ 10 ms @ 4.75V
≤ 10 ms @ 3.15V
tri-state control on pin 6
High or open = enable, low = high Z
remarks
duty cycle for frequencies > 30 MHz is 40/60%…60/40%
FREQUENCY STABILITY
detailed tolerances [ ppm ]
temperature
model
stability versus :
type
range
code
temperature
Vcc range
load ± 10 %
Ageing
-10 to 60°C
D1
≤ ± 1
C1
≤ ± 1
-20 to 70°C
C2
≤ ± 2
all types
-30 to 75°C
N2
≤ ± 2
≤ ± 0.1
≤ ± 1
DFA S7-K type
-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
DFA S7-K : 2.5 V ± 2 V
≥ ± 5 ppm, positive slope
external voltage control
V
DFA S7-L : 1.5 V ± 1.5 V
≥ ± 5 ppm, positive slope
internal trimmer
A
≥ ± 5 ppm
external potentiometer
Y
10 k
≥ ± 5 ppm, between pin 1 and GND (not available with internal trimmer)
ORDERING CODE
type + option code + frequency + model code
Example
DFA S7-KHZ 16.384 MHz E3
PC board footprint
19.0
1.
3
2.6
1
2
3
4
12
.9
±
0
.2
19.9± 0.1
7.
8
±
0.
1
18.4
7.
6
2
1.
2
1.
2
7
7.
62
1.6
5
6
10k
Pot in
Gnd
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