ics728 Integrated Device Technology, ics728 Datasheet - Page 4

• Manufacturer Part Number: ics728
• Description: Low Cost 27 Mhz 3.3 Volt Vcxo
• Manufacturer: Integrated Device Technology

capacitance. (Alternately, the crystal may be re-specified to
a higher load capacitance. Contact ICS for details.) If the
centering error is more than 25 ppm positive, add identical
fixed centering capacitors from each crystal pin to ground.
The value for each of these caps (in pF) is given by:
Absolute Maximum Ratings
Recommended Operation Conditions
IDT™ / ICS™ LOW COST 27 MHZ 3.3 VOLT VCXO
ICS728
LOW COST 27 MHZ 3.3 VOLT VCXO
Stresses above the ratings listed below can cause permanent damage to the ICS728. These ratings, which are
standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at
these or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Supply Voltage, VDD
All Inputs and Outputs
Storage Temperature
Soldering Temperature
Parameter
Ambient Operating Temperature
Power Supply Voltage (measured in respect to GND)
Reference crystal parameters
Item
4
External Capacitor = 2 x (centering error)/(trim sensitivity)
Trim sensitivity is a parameter which can be supplied by your
crystal vendor. If you do not know the value, assume it is 30
ppm/pF. After any changes, repeat the measurement to
verify that the remaining error is acceptably low (typically
less than ±25 ppm).
+3.15
Min.
0
7 V
-0.5 V to VDD+0.5 V
-65 to +150°C
260°C
Typ.
Refer to page 3
Rating
+3.45
Max.
+70
ICS728
Units
°C
V
REV B 012505
VCXO