LC7185

The LC7185 is designed as one kind of 27 MHz band, PLL frequency synthesizer LSI chip that is designed specifically for CB transceivers. The specifications are suited for use in U.S.A.. This device incorporates PLL circuitry and a controller for CB applications on a single CMOS chip. The controller handles the PLL circuitry, frequency data ROM, channel preset / recall RAM, and LED display drivers. It also supports channel scan, channel preset / recall and emergency channel call.

Features of the LC7185 are:(1)a built-in programmable divider for the 16 MHz VCO;(2)transmission is inhibited when the PLL is unlocked (digital lock monitor);(3)direct channel 9 ot 19 selecion (sliding switch);(4)a 7-segment, 2-character LED display;(5)output beep-tone control circuitry;(6)up to 5 channel settings can be stored in memory;(7)4 x 3 key matrix implementation.

The absolute maximum ratings of the LC7185 can be summarized as:(1)maximum supply voltage: -0.3 to +9.0 V;(2)input voltage: -0.3 to +15 V;(3)allowable power dissipation: 350 mW;(4)operating temperature: -40 to +85;(5)storage temperature range: -55 to +125. If you want to know more information such as the electrical characteristics about the LC7185, please download the datasheet in www.seekic.com or www.chinaicmart.com.