Data Sheet

EURO QUARTZ
LHTAT OSCILLATORS
Leaded High Temperature/High Shock
320kHz to 50MHz
FEATURES
High temperature operation up to 200°C
Excellent stability over temperature
High shock resistance
CMOS output
Through-hole leaded package - reduces mounting stress
Robust lead attach-eutectic brazing process
Gold plated Kovar leads
OUTLINE & DIMENSIONS
DESCRIPTION
For applications with high operating temperatures such as downhole
instrumentation, rotary shaft sensors and underground boring tools.
SPECIFICATION
Supply Voltage:
Calibration Tolerance:
Frequency Stability
25° ~ +150°C:
25° ~ +175°C:
25° ~ +200°C:
Total Tolerance:
Supply Current (Typical)
24MHz:
32MHz:
50MHz:
Output Load (CMOS):
Start-up Time:
Rise/Fall Time:
Duty Cycle:
Ageing first year:
Ageing:
Shock Survival
Standard:
HG version:
Vibration Survival:
Operating Temp. Range:
+3.3 ±10%
±50ppm or tighter as reqd.
±100ppm
±150ppm
±175ppm
±200ppm for 25° to 200°C
3.0mA
5.0mA
6.0mA
15pF
5ms max.
10ns typical
60/40%
±5ppm max. at 25°C
±100ppm max. at 200°C
ENABLE/DISABLE OPTIONS (E/N)
LHTAT oscillators have two enable/disable options, designated E &
N. The E version has a tristate output and stops oscillating internally
when the output is placed in a high Z state. The N version does not
have the control pin, Pin1, connected internally so there is no
enable/disable function with this option.
5,000g, 0.3ms, ½ sine
30,000g, 0.3ms, ½ sine
20g, 10~2000Hz swept sine
-55°C to 225°C
ENABLE/DISABLE OPTION E - FUNCTION TABLE
ABSOLUTE MAXIMUM RATINGS
Supply Voltage:
Maximum Process Temperature:
Storage Temperature:
Enable (Pin1 High*)
Disable (Pin 1 Low)
Frequency Output
High Z state
Output
-0.5V to +4.0V
260°C for 20 seconds
-55° to +125°C
Oscillator
Current
Oscillates
Stops
Normal
Very low
PACKAGING
LHTAT oscillators are supplied tube packed.
HOW TO ORDER LHTAT OSCILLATORS
LHTAT
4
Supply Voltage
4 = 3.3V
A
Shock Level
A = 5000g
B = 10000g
C = 20000g
D = 30000g
E
Enable/Disable
option E or N
SM1
-
Terminations
Blank = SM1 = Gold plated
SM5 = Solder dipped
(lead free)
20.0M
–
Frequency
M = MHz
k = kHz
Calibration
Tolerance
at 25°C
(in ±ppm)
OR
50
Calibration
Tolerance
at 25°C
(in ±ppm)
/
–
/ 200 /
Frequency
Stability
over
temperature
range
(in ±ppm)
/
175
Frequency
Stability
over temp.
range
(in ±ppm)
Total
Frequency
Tolerance
(±ppm)
/
Total
Frequency
Tolerance
(±ppm)
H
Temp. Range
H = 25° to 200°C
S = customer
specified temp.
range
/
H
Temp. Range
H = 25° to 200°C
S = customer
specified temp.
range
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
Similar pages