FREQUENCY CONTROL PRODUCTS
LOW COST MINIATURE DIL 14 PACKAGE TCXO
TYPES DFA 14-K (5 V) & DFA 14-L (3.3 V)
STANDARD MINIATURE DIL 14 PACKAGE
WIDE TEMPERATURE RANGE
12.7± 0.1
20.3± 0.1
PIN 1
15.24
HIGH FREQUENCY STABILITY
Option Y
Pot in
NC/Pot in/Vco
GND
Output
Vcc
1
7
8
14
G
nd
6.3
H± 0.1
Function
DFA 14
0.45
H = 8.50 mm
TYPE
Frequency Range
DFA 14-KH
2 to 52 MHz
5V±5%
≤
10 mA
≤
20 mA
≤
30 mA
HCMOS 15 pF
or 2 TTL
≤
45/55...55/45 %
≤
10 ns
DFA 14-KO
2 to 52 MHz
5V±5%
≤
5 mA
≤
20 mA
≤
30 mA
clipped sine
20kΩ//5 pF
DFA 14-LH
2 to 39 MHz
3.2 V to 3.6 V
≤
5 mA
≤
15 mA
≤
20 mA
HCMOS 15 pF
or 1 TTL
≤
45/55...55/45 %
≤
10 ns
DFA 14-LO
2 to 39 MHz
3.2 V to 3.6 V
≤
5 mA
≤
15 mA
≤
20 mA
clipped sine
20kΩ//5 pF
ELECTRICAL SPECIFICATIONS
supply voltage
supply current ( no loa)d
≤
25 MHz
≤
35 MHz
> 35 MHz
output load
duty cycle @ 2.5V (LH @ 1.65 V)
rise/fall times (10 to 90 %)
high/low levels or output amplitude
start-up
remarks
≥
3.5 V/
≤
0.5 V
≥
2 V p-p
≥
2.7 V/
≤
0.2 V
≥
1.5 V p-p
≤
10 ms @ 4.75V
≤
10 ms @ 4.75V
≤
10 ms @ 3.2V
≤
10 ms @ 3.2V
duty cycle for frequencies > 30 MHz is 40/60%…60/40%
FREQUENCY STABILITY
type
temperature
range
-10 to 60°C
-20 to 70°C
-30 to 75°C
DFA 14-K types -40 to 85°C
model
code
D1
C1
C2
N2
E5
E3
E2
temperature
≤
±1
≤
±1
≤
±2
≤
±2
≤
±5
≤
±3
≤
±2
detailed tolerances [ ppm ]
stability versus :
Vcc range
load ± 10 %
≤
± 0.1
≤
± 0.1
ageing
≤
±1
all types
≤
± 0.1
≤
± 0.1
0.75± 0.1
10k
7.62
≤
±1
remarks
factory calibration if no trimming option
≤
± 1 ppm
st
ageing is 1 year at 25°C
DFA S7-L : Vcc range
≤ ±
0.3 ppm ( f
≥
30 MHz )
OPTIONS
external voltage control
internal trimmer
external potentiometer
CODE
V
A
Y
DFA 14-K : 2.5 V ± 2 V
≥
± 5 ppm, positive slope
DFA 14-L : 1.5 V ± 1.5 V
≥
± 5 ppm, positive slope
≥
± 5 ppm
10 kΩ
≥
± 5 ppm (not available with internal trimmer)
ORDERING CODE
Example
type + option code + frequency + model code
DFA 14-KHAV 8.192 MHz E2
web site :
http://www.fordahl.com
MCU
京公网安备 11010802033920号
EEWORLD
