SL2035

SL2035 High Performance Broadband Downconverter Preliminary Information DS5117 Issue 2.1 October 1999 Features G G G G G Ordering Information SL2035/IG/MP1S (Tubes) SL2035/IG/MP1T (Tape and Reel) The output of the preamplifier is fed to the mixer section which is optimised for low radiation application. In this stage the RF signal is mixed with the local oscillator frequency, which is generated by an on-chip oscillator. The oscillator block uses an external tuneable network and is optimised for low phase noise. A typical application is shown in Figure 5. This block also contains a buffer-amplifier to interface with an external PLL to allow for frequency synthesis of the local oscillator. The IF output can be loaded either differentially or singleended. It is recommended that the differential load as in Figure 5 is applied as this gives best noise performance. If the output is loaded single-ended the noise figure will be degraded. The approximate model of the IF output is shown in Figure 4. In application care should be taken to achieve symmetric balance to the IF outputs to maximise intermodulation performance. Single Chip Broadband Solution Wide Dynamic Range RF Input Low Phase Noise Balanced Internal Local Oscillator High Frequency Range: 1 to 1·3 GHz ESD Protection 2kV min., MIL-STD-883B Method 3015 Cat.1 (Normal ESD handling procedures should be observed) Applications G G G G Double Conversion Tuners Digital Terrestrial Tuners Data Transmit Systems Data Communication...