PLL frequency synthesizer for tuners
Audio ICs
PLL frequency synthesizer for tuners
BU2618FV
The BU2618FV is a low current dissipation PLL frequency synthes...
Description
Audio ICs
PLL frequency synthesizer for tuners
BU2618FV
The BU2618FV is a low current dissipation PLL frequency synthesizer designed for use in FM multiplex radio receiver and FM pager receiver. Featuring very small package and built-in prescaler that can operate at up to 130MHz.
FApplications FM multiplex radio receivers, pagers, radios, and other signal generators
FFeatures 1) Built-in high-speed prescaler can divide 130 MHzVCO. 2) Low current dissipation (during operation: 1.5mA, PLL OFF: 200µA Typ.) 3) Seven standard frequencies: 25kHz, 12.5kHz, 6.25kHz, 10kHz, 9kHz, 5kHz, and 1kHz.
4) 5) 6) 7)
Counter for intermediate frequency detection. Unlock detection circuit. Four output ports. Serial data input (CE, CK, DA)
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
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Audio ICs
FBlock diagram
BU2618FV
FPin descriptions
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Audio ICs
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 3.0V)
BU2618FV
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FCircuit operation
BU2618FV
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S Explanation of the data (1) Division data: For D0 through D15 (When S = 0, use D4 through D15.)
BU2618FV
(2)
(3)
(4)
CT: Frequency measurement beginning data 1: Begins measurement. 0: Resets internal counter, IFIN goes to pulldown. Output port control data: 1: Open drain output ON 2: Open drain output OFF R0, R1, R2, standard frequency data
(5) (6) (7)
S: switch between FMIN and AMIN 0: FMIN 1: AMIN PS: If this bit is set to ON while AMIN is sel...
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