Audio ICs PLL frequency synthesizer for tuners BU2611A / BU2611AF / BU2611AFS The BU2611 PLL frequency synthesizers work up through the FM band. They feature built-in RF amps with low power dissipation and high sensitivity. Applications Tuners (Mini components, radio cassette players, radio equipment, etc.) 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. Absolute maximum ratings (Ta = 25C) Recommended operating conditions 106 3) 4) 5) 6) 3-bit output port (open drain). Clock output (400kHz). Time base output (8Hz). Serial data input (CE, CK, DA). Audio ICs BU2611A / BU2611AF / BU2611AFS Block diagram Pin descriptions 107 Audio ICs BU2611A / BU2611AF / BU2611AFS Electrical characteristics (unless otherwise noted, Ta = 25C, VDD = 5.0V) Data format (1) Division data: For D0 through D13 (For AMN, use D4 through D13.) (2) Test data: T0 through T1 are taken as (0, 0). 108 Audio ICs Data format (3) P0, P1, P2, P3, TB: port output, time base output BU2611A / BU2611AF / BU2611AFS (4) R0, R1, R2, standard frequency data (5) S: input selection data 1: FMIN 0: AMIN External dimensions (Units: mm) 109