The BU2611 PLL frequency synthesizers work up through the FM band. They feature built-in RF amps with low power dissipation and high sensitivity.

Features
1) Built-in high-speed prescaler can divide 130 MHzVCO.
2) In addition to the reference FM and AM, also offers the following 7 frequencies: 100kHz, 50kHz, 25kHz, 10kHz, 9kHz, 5kHz, and 1kHz.
3) 3-bit output port (open drain).
4) Clock output (400kHz).
5) Time base output (8Hz).
6) Serial data input (CE, CK, DA).