TCXO packaged in 1.6 x 1.2 mm outline

October 17, 2016 // By Graham Prophet
This TCXO design by IQD houses two new models in ultra-miniature 1.6 x 1.2 x 0.45 mm hermetically sealed ceramic packages that are amongst the smallest available.

The IQXT-350 series is a standard TCXO (temperature compensated crystal oscillator) whilst the IQXT-351 series version offers full VCTCXO (voltage controlled temperature compensated crystal oscillator) functionality.

Both models are initially available in four standard frequencies; 19.2, 26.0, 38.4 and 52.0 MHz, all with a frequency tolerance of ±1.5 ppm and frequency stability of ±0.5 ppm. Both series operates at 1.8V with a maximum current consumption of 1.7 mA and a clipped sinewave output with 10 kΩ//10 pF drive capability. The 26.0 & 52.0 MHz parts are available with an operating temperature range of -40 to +85C whilst the 19.2 & 38.4 MHz operate over -30 to +85C. Start-up time from the power mode is 2 msec max whilst the IQXT-351 (VCTCXO) series has a pullability of between ±8 ppm to ±13 ppm. Harmonic distortion is - 5.0 dBc max and typical phase noise is -135 dBc/Hz at 1 kHz with ageing at ±1 ppm max per year.