ROHM BU2630FV, BU2630F Datasheet
Communication ICs
Dual PLL frequency synthesizer
BU2630F / BU2630FV
The BU2630F/BU2630FV are a CMOS LSI with an internal dual PLL synthesizer.
VCOs for transmission and reception can be controlled independently, and the reference frequency and main counter
settings can also be programmed separately. This product is designed for applications involving cordless telephones
and communications equipment worldwide.
Applications
Cordless telephones, amateur short wave radios, industrial transceivers, VHF/UHF frequency generators, and others
Features
1) Operation possible at up to 80MHz (V
2) Low current dissipation
Dual-system operation : 2.2mA (typ), V
Single-system operation : 1.2mA (typ), V
Non-operating state : 0.2mA (typ), V
Block diagram
DD = 2.5).
DD = 3V
DD = 3V
DD = 3V
3) 16-bit main counter.
4) Internal 14-bit reference frequency counter.
5) Unlock detection possible.
6) Four output ports. (open drain)
7) Control possible using 3-wire serial input.
91
Communication ICs BU2630F / BU2630FV
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
FPin descriptions
92
Communication ICs BU2630F / BU2630FV
Input/output circuits
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