LSM Series Oscillators
QUARTZ
EURO
Low Power - Low Frequency SMD Oscillator
Low current consumption, low frequency from 30kHz
Low profile, miniature SMD package
Full military testing available
Testing to MIL-PRF-55310 available
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.
OUTLINE & DIMENSIONS
SPECIFICATION
Frequency Range****:
Supply Voltage*:
Calibration Tolerance**
Code A:
30kHz to 200kHz (32.768kHz)
3.3 or 5.0 Volts ±10%
±0.001% (±10ppm)
±0.0025%
Code B:
Code C:
±0.01%
Frequency Stability***
0° to +50°C:
-20° to +40°C:
Voltage Coefficient
±0.0025% typical (±25ppm)
±0.004% maximum (±40ppm)
±0.007% typical (±70ppm)
±0.01% maximum (±100ppm
±1ppm/V typical
±3ppm/V maximum
Ageing:
±1ppm/year typical
±3ppm/year maximum
1000g, 1ms, ½ sine, ±3ppm max.
10g rms, 10-2000Hz, ±3ppm max.
Shock:
Vibration:
Frequency Change
vs. Output Load Change:
Operating Temperature:
±1ppm maximum
Notes:
-10° to +70°C Commercial
-40° to +85°C Industrial
-55° to +125°C Military
*
**
***
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
Output Voltage (5.0V supply)
HIGH:
4.8V minimum, 4.95V typical
0.2V maximum, 0.05V typical
12ns typical
LOW:
****
Rise/Fall Times:
Symmetry:
40/60% maximum, 45/55% typical
Supply Current
5.0V supply: 15 mA max., 8.3 mA typical
3.3V supply: 10 mA max., 5.5 mA typical
Tray pack (standard)
PART NUMBERING
Packaging:
Example: 32.7680kHz LSMA050UMTA
16mm tape, 17.8cm or 33cm reels
Frequency
Series Designation LSM
Calibration Tolerance (see table above)
Stability*
ENABLE/DISABLE, POWER DOWN, NOT CONNECTED
Pad 3
Specifying
Code
Pad 1*
Option
100 = ±100ppm
50 = ±50ppm
25 = ±25ppm
Power Down
P
T
LOW
HIGH
LOW
HIGH
NC
High Z
Frequency output
High Z
Frequency output
Frequency output
Output Universal (CMOS)
Operating Temp. Range
C = Commercial
I = Industrial
Enable/Disable
Not Connected
Blank
M = Military
Pad 1 Function
* Normally HIGH (internal pull-up resistor)
T = Enable/Disable
Blank = not connected
Supply Voltage**
Blank = 5.0 Volts
A = 3.3 Volts
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.
*
For other stability requirements enter figure required.
** For other supply voltage enter required voltage.
Power Down:
Disabled current consumption low,
recovery delayed.
Enable/Disable:
Disabled current consumption lower than normal,
Recovery immediate.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk