|Temperatur||40.8 °C +/- 1.5 °C|
|Regulation accuracy||better 0.1 °C|
|Supply voltage||+8 ... 12 V DC, use stabilized voltage|
|Inrush current||typ. 80 mA|
|Dimensions (mm)||11.5 x 13.8 x 2.4|
The precision crystal heater provides temperature stabilisation for crystals. The circuit, which is built on AL2O3 ceramic substrate, has to be mounted on the 40 °C thermostat crystal. Then, the crystal is heated to 40.8 °C with a regulation accuracy of better than 0.1 °C. This provides high frequency stability.
The precision crystal heater is a in expensive alternative to completely heated oven oscillators (OCXOs). However, the stability values of an OCXO can not be reached.
- Temperature stabilisation of crystals for high frequency stability