DEMO MANUAL DC2460A LTC5566 300MHz to 6GHz Dual Programmable Gain Downconverting Mixer DESCRIPTION ABSOLUTE MAXIMUM INPUT RATINGS Demonstration circuit 2460A is optimized for evaluation of the LTC 5566 dual programmable gain downconverting Supply Voltage + + mixer. Each channel incorporates an active mixer and a (V , V , V , IF1 , IF1 , IF2 , IF2 ) ..................4V DD CC1 CC2 digital IF VGA with 15.5dB gain control range. The IF gain EN1, EN2, T0, T1 Input Voltages ......0.3V to V + 0.3V CC + of each channel is independently programmable through LO , LO Input Power (150MHz to 6GHz) .......... +10dBm the SPI in 0.5dB steps. Its single-ended RF ports are tun- RF1, RF2 Input Power (300MHz to 6GHz) ..........+20dBm + able via the SPI or parallel control lines and have a range LO , LO Input DC Voltage .....................................0.5V from 300MHz to 6GHz. The LO port is always matched to IF DVGA Peak Differential Input Voltage ....................4V 50 from 150MHz to 6GHz with 10dB return loss. The SDI, CLK, CSB, PS Input Voltages .... 0.3V to V +0.3V DD differential IF port is usable from 1MHz to 500MHz. There SDO Output Current ............................................. 10mA is a reduced power mode available through the SPI, which Operating Temperature Range (T )........ 40C to 105C C lowers the total current consumption by 25%. Junction Temperature (T ) .................................... 150C J Storage Temperature Range .................. 65C to 150C Design files for this circuit board are available at DEMO MANUAL DC2460A PROPER TEST SETUP Figure 2. Test Setup for Downconverting Mixer 2-Tone Measurement dc2460af 2 0 180