200 – 600 MHz Transceiver With Dual Synthesizer

The SE7051L10 is a highly integrated low noise, high linearity transceiver that includes both RF (2850 to 3350 MHz) and IF (200 to 600 MHz) synthesizers. The receiver down-converts signals in the frequency range of 200 to 600 MHz to either baseband IQ outputs or IF output. The high linearity output provides excellent inter-modulation performance and drive capability for the ADC Interface A high-speed digital VGA delivers 50dB of gain control range, with 1 dB resolution. On transmit, the baseband IQ input signals are up- converted to an IF output frequency between 200 and 600 MHz. Alternatively, the transmitter may be configured for single sideband up-conversion of an IF input signal. The transmitter has a total of 68 dB of gain control range, with 1 dB resolution, that is distributed between the Modulator and VGA. The VGA has 50 dB range while the Modulator provides 18 dB with coarse (6 dB) resolution. The variable gain Modulator CAN accept a wide range of input voltages thus allowing flexibility in the choice of baseband DAC The dual synthesizers provide very low phase noise LOs that are suitable for high order digital modulation Radios By SiGe Semiconductor