Data Sheet

EURO QUARTZ
LSM Oscillators
Low Frequency - Low power SMD Oscillator
30kHz to 200kHz
FEATURES
Low current consumption, low frequency from 30kHz
Low profile, miniature SMD package
Full military testing available
MIL testing to MIL-PRF-55310 available
OUTLINE & DIMENSIONS
DESCRIPTION
LSM series oscillators are precision surface mount oscillators with a
frequency range from 30kHz to 200kHz. The part comprises of a
hermetically sealed crystal with a hybrid circuit sealed in a ceramic
package with a Kovar lid. Full MIL testing is available.
SPECIFICATION
Frequency Range****:
Supply Voltage*:
Calibration Tolerance**
Code A:
Code B:
Code C:
Frequency Stability***
0° to +50°C:
-20° to +40°C:
30kHz to 200kHz (32.768kHz)
3.3 or 5.0 Volts ±10%
±0.001% (±10ppm)
±0.0025%
±0.01%
±0.0025% typical (±25ppm)
±0.004% maximum (±40ppm)
±0.007% typical (±70ppm)
±0.01% maximum (±100ppm
Voltage Coefficient
Ageing:
Shock:
Vibration:
Frequency Change
vs. Output Load Change:
Operating Temperature:
Output Voltage (5.0V supply)
HIGH:
LOW:
Rise/Fall Times:
Symmetry:
Supply Current
5.0V supply:
3.3V supply:
Packaging:
±1ppm/V typical
±3ppm/V maximum
±1ppm/year typical
±3ppm/year maximum
1000g, 1ms, ½ sine, ±3ppm max.
10g rms, 10-2000Hz, ±3ppm max.
Notes:
±1ppm maximum
-10° to +70°C Commercial
-40° to +85°C Industrial
-55° to +125°C Military
4.8V minimum, 4.95V typical
0.2V maximum, 0.05V typical
12ns typical
40/60% maximum, 45/55% typical
15 mA max., 8.3 mA typical
10 mA max., 5.5 mA typical
Tray pack (standard)
16mm tape, 17.8cm or 33cm reels
ENABLE/DISABLE, POWER DOWN, NOT CONNECTED
Option
Specifying
Code
Power Down
P
Enable/Disable
T
Not Connected
Blank
Pad 1*
LOW
HIGH
LOW
HIGH
NC
Pad 3 (Output)
High Z
Frequency output
High Z
Frequency output
Frequency output
* Normally HIGH (internal pull-up resistor)
ENABLE/DISABLE vs. POWER DOWN
P - Power Down: When Pad 1 is LOW the oscillator stops running
T - Enable/Disable: When Pad 1 is LOW the internal oscillator
continues to run but the output (Pad 3) is in a
high impedance (Z) state.
Power Down:
Disabled current consumption low, recovery
delayed.
Enable/Disable:
Disabled current consumption lower than
normal, recovery immediate.
*
**
***
****
Contact factory for lower supply voltages
Tighter tolerances avialable
Does not include calibration tolerance. Positive variations
are small compared to negative variations.
Contact factory for frequencies other than 32.7680kHz
PART NUMBERING
Example:
32.7680kHz LSMA050UMTA
Frequency
Series Designation LSM
Calibration Tolerance (±100ppm standard)
Stability*
100 = ±100ppm
050 = ±50ppm
025 = ±25ppm
Output Universal (CMOS)
Operating Temp. Range
C = Commercial
I = Industrial
M = Military
Pad 1 Function
T = Enable/Disable
Blank = not connected
Supply Voltage**
Blank = 5.0 Volts
A = 3.3 Volts
*
**
For other stability requirements enter figure required.
For other supply voltage enter required voltage.
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
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