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參數資料
| 型號： | QEM77-AH |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數： | 1/7頁 |
| 文件大小： | 105K |
| 代理商： | QEM77-AH |
QEM77-AH
41 x 41 mm / 19 pins
MCXO
Operating Procedure
SALES OFFICES:
Benelux:
+33 (0) 1 46 90 23 00 /
Germany:
+49 (0)
89 820 796-27
/
Nordic:
+46 (0) 8 59030300
France:
+33 (0) 1 46 90 23 00 /
Italy:
+39 (0) 738 8869 /
Spain:
+33 (0) 1 46 90 23 00 /
UK:
+44 (0) 1256 883340
USA:
+1 (623) 780-1995 /
Asia-Pacific
: +33 (0) 5 56 46 66 84
WEB SITE: http://www.temex-components.com
Specifications are subject to change without notice - Page 1 / 7
TEMEX
TIME &
FREQUENCY
QEM77AH
04-05-2001
Frequency Range :
Description :
The MCXO offers the parameters of OCXO's and TCXO's, delivering practically the frequency of an ovenized oscillator with
the power consumption associated with temperature compensated oscillators over the entire military range of -55°C to +125°C.
Using digital techniques, it is possible to operate a stand-by mode with low power consumption and to synchronize the 1 Hz
signal with an external source. I n addition, a choice of output frequency is available.
Control of Secondary functions :
The secondary functions of the MCXO are obtained by two methods :
application of logic levels on the pin-out as indicated
inputting bytes on the RS232 port.
The details of the logic controls are shown on the following pages.
Block- Diagram :
Applications :
5 MHz to 10 MHz
Synchronization System
Test equipment
Military Radio
Low Power Equipment
PD4
VPP6
FDDSI
IRQ
RESET
PC7
CTRL
FM2 (1 Hz input)
F
β
F3
Counter
/2
n
A /D converter
F
β
/2
n
N1
N2
FM1 (1 Hz output)
Microcontroller
1 Hz synch.
PLL
digital direct
synthesis
Vcc Gnd
supply voltage
stabilisation
RS 232 out
PD1
PD2
PD6
PD7
RS 232 in
PD5
(synch enable)
FMCXO
1, 5 or 10 MHz
dual-mode
oscillator
/ 3
F0
delta
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