DESCRIPTION
Together with TEMIC’s PLL IC U2783B and the GaAs front end U7001BG, a complete CT2 chip set is available. Electrostatic sensitive device. Observe precautions for handling. FEATURES
D Programmable 0.8/1.6 MHz quadrature modulated carrier generation D More than 26 dB LO and sideband suppression D 18.432 MHz CMOS level clock generation D Supply voltage range 2.7 to 3.3 V D Low power consumption, typical 12 mW D SO16 package or die form Block Diagram RRef in 12.8 MHz 2 DIV / 25 Phase comparator 512 kHz LF 11 VCO 14 CLK out 95 9881 Amp. 3 4 13 12 10 6 5 8 7 1, 15, 16 DNC DIV / 2 or DIV / 4 6.4 MHz 3.2 MHz 512 kHz DIV / 36 18.432 MHz VDD DGND AGND PROG TST Qin QBin Iin IBin Dual DFF 9 MOD out Figure 1. Block diagram MATRA MHS Rev. An innovative CMOS I,Q modulator with an extremely low current provides all the advantages of I,Q modulation: – No requirement for FM deviation tuning – Eliminates the Gaussian filter – Simplifies the power ramping control The modulated output carrier can be programmed to be 0.8 MHz or 1.6 MHz by the PROG control pin.
TEMIC Semiconductors
