Description
The NCD2400M is a dedicated electronic calibrator for oscillators, with reliable performance at 105ºC as required by OCXO applications.
This product can be used in series or shunt configuration to support a wide variety of tuning circuit topologies.
Digitally controlled capacitance trimming information is communicated via a 2-wire, I2C Fast-mode compatible interface. The preferred power-up default capacitance value can be stored in the internal, re-programmable, non-volatile memory.

FEATUREs
• DC to 150MHz frequency range
• 512-state digital programmable capacitor
• Series or shunt configuration
   Cshunt = 12.5pF to 194pF (15.5:1 tuning ratio) in
   discrete 355fF steps
   Cseries = 1.7pF to 194pF in discrete 376fF steps
• 2-wire (I2C Fast-mode compatible) serial interface
• EEPROM non-volatile memory
• Wide power supply range (2.5V to 5.5V)
• Operation ambient temperature to 105ºC
• 2 x 2 x 0.65 mm 6-pin DFN package

APPLICATIONs
• OCXOs
• Oscillators
• Tunable RF stages
• Filter tuning
• Capacitive sensor trimming
• Measurement equipment