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參數(shù)資料
| 型號： | QEM77-AH |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 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 5 / 7
TEMEX
TIME &
FREQUENCY
QEM77AH
04-05-2001
example :
D
F = 35 Hz gives $AF $03 $00
for 10 MHz
for other frequency
1ppm = 270 (decimal) = $1E$01$00
Pin function
Pin #
Symbol
Typical signal
Maximum absolute rating
reserved for initial setting,
don’t connect
1
FDDSI
n.a.
n.a.
1 Hz output
2
FM1
LS-TTL-compatible
″
0
″
≤
0.4 V
″
1
″
≥
2.4 V
sink/source 0.5 mA/10 pF
″
0
″
≤
-0.5 V
″
1
″
≥
3.2 V
reserved for initial setting,
don’t connect
3
VPP6
n.a.
n.a.
1 MHz, 5 MHz or 10 MHz
frequency output
4
FMCXO
LS-TTL-compatible
″
0
″
≤
0.4 V
″
1
″
≥
2.4 V
sink/source 0.5 mA/10 pF
″
0
″
≤
-0.5 V
″
1
″
≥
3.2 V
1 Hz reference signal input
5
FM2
output frequency programming inputs
6
PD1
HCMOS 3 V
-0.5 V
<
V
in
<
6 V
7
PD2
reserved for initial setting,
don’t connect
8
PD4
n.a.
n.a.
1 Hz synch enable / disable
9
PD5
stand-by / normal mode
10
PD6
HCMOS 3 V
-0.5 V
<
V
in
<
6 V
φ
-measurement enable/disable
11
PD7
power supply
12
VP
+3.2 V
<
V
in
<
+6 V
RS 232 input
13
RDI
HCMOS 3 V
-0.5 V
<
V
jn
<
+6 V
RS 232 output
14
TDO
-0.5 V
<
V
out
<
+3 V
GND
15
GND
0 V
n.a.
reserved for initial setting,
don’t connect
16
RESET
n.a.
n.a.
17
PC7
frequency adjustment (analogue)
18
CTRL
0.5 V
<
V
CTRL
<
2.8 V
0 V
<
V
CTRL
<
3.5 V
reserved for initial setting, don’t connect
I mportant notice
: The pins reserved for initial setting must not be connected. Any connection could cause
malfunctioning or even permanent damage.
19
I RQ
n.a.
n.a.
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