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PDF BU2618 Data sheet ( Hoja de datos )
| Número de pieza | BU2618 | |
| Descripción | PLL frequency synthesizer for tuners | |
| Fabricantes | ROHM Semiconductor | |
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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) Counter for intermediate frequency detection.
5) Unlock detection circuit.
6) Four output ports.
7) Serial data input (CE, CK, DA)
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
139
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Audio ICs
S Explanation of the data
(1) Division data: For D0 through D15 (When S = 0, use D4 through D15.)
BU2618FV
(2) CT: Frequency measurement beginning data
1: Begins measurement.
0: Resets internal counter, IFIN goes to pulldown.
(3) Output port control data:
1: Open drain output ON
2: Open drain output OFF
(4) R0, R1, R2, standard frequency data
(5) S: switch between FMIN and AMIN
0: FMIN 1: AMIN
(6) PS: If this bit is set to ON while AMIN is selected,
swallow counter division is possible.
(7) GT: Frequency measurement time and unlock detection ON / OFF
(8) TS: Test data (0) is input
143
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BU2618.PDF ] | |
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