In order to obtain a sufficient RF link margin, an NB RF module with a TCXO
component can be employed, as shown in Figure 9(a).
Research has shown that even the tough GSM and CDMA cell phone TCXO
standards are possible as this technology is matured in 2008 and beyond.
(10) The block diagram of a common PLL synthesizer is shown in Figure 1 and includes a charge pump phase detector (PD), a temperature-compensated crystal oscillator (TCXO
), a voltage-controlled oscillator (VCO), an R divider and an N divider.
It has a TCXO
and GPS built in, stores hundreds of passes with time, location, and records graphics as well.
The MTXL25 is a temperature compensated crystal oscillator (TCXO
) that is available with frequency stabilities of [plus or minus]l.5ppm over -20[degrees] to 70[degrees]C.
provides frequency coverage from 1 kHz to 1 GHz with TCXO
, OCXO and VCXO oscillators, crystal and lumped element filters, frequency synthesizer products, acoustic memories and delay devices.
 Tan C., Liu Z., "A bandgap reference and over temperature protection circuit designed for TCXO
chip", International Conference on Intelligent Transportation, Big Data & Smart City, 2015, pp.
Fox Electronics (Fort Myers, FL) has released a new TCXO
in a compact 2.5 x 2.0 x 1.0 mm package making them ideal for GPS applications.
It provides two phase-synchronous sine wave outputs up to 171 MHz and matching LVCMOS outputs, serial control, 500-MHz external clock input, and on-board TCXO
stable to [+ or -]1.5 ppm.
SMD temperature compensated crystal oscillators (TCXO
) series NT3225 are available.
provides frequency coverage from 1 kHz to GHz with TCXO
, OCSO and VCXO oscillaors, crystal and lumped element filters, frequency synthesizer products, acoustic memories and delay devices.
Limited tenders are invited for Supply of Oscillator vectron tcxo