U3770M - CT2 I/Q Modulator and Clock Circuitry

The U3770M is a quadrature modulator realized using Atmel Wireless & Microcontrollers’ advanced 0.8 micron CMOS process.

• 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 V to 3.3 V D Low power consumption, typically 12 mW D SO16 package or die form Block Diagram RRef in 12.8 MHz 2 DIV / 25 Phase 512 kHz comparator 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.