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  BK1087  
 
General Description
         BK1087 is a single chip FM radio transceiver. It combines the functionality of BK1080 FM receiver with the BK1081 FM transmitter, offering full receiver and transmitter capabilities in a single chip. BK1087 performs much of  the FM modulation and demodulation digitally to  achieve high fidelity , optimal performance versus power consumption, and easy design-in with minimum external components. 
 
 
Applications
*. Cellular handset
*. MP3 player
*. PDAs and notebook 
 
KEY FEATURES
*. 64~108 MHz receive and transmission
*. Automatic gain control
*. Programmable transmitter output power
*. Automatic frequency control
*. Seek tuning
*. Receive signal strength indicator
*. Automatic stereo/mono switching
*. Automatic noise suppression
*. 50us/75us de-emphasis and pre-emphasis
*. 2.7 ~ 5.5 V supply voltage
*. Receiver mode current 21 mA
*. Transmitter mode current 19 mA
*. Programmable reference clock
*. I2C and 3-wires control interface
*. 4x4 mm 24 pins QFN package
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