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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.
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Communication ICs BU2630F / BU2630FV
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
FPin descriptions
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Communication ICs BU2630F / BU2630FV
Input/output circuits
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Communication ICs BU2630F / BU2630FV
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VDD = 3.0V, VSS = 0V)
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Communication ICs BU2630F / BU2630FV
Circuit operation
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Communication ICs BU2630F / BU2630FV
Description of data
(1) Programmable divider data: D
0 D15
(2) Reference frequency data: R0 R13
(3) Output port control data : P-T (P-R) TON (RON)
1 : Open drain output ON (LO)
0 : Open drain output OFF (HI)
(4) OFF transmission side (reception side) : Operation stopped
F - T (F - R) pull-down : TPD (RPD) high-impedance, LD = OFF
(5) PS
Programmable device change : No. of divisions = 3 4095
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Communication ICs BU2630F / BU2630FV
(6) PL, PH, and PD pin control
0 0 : PLL operation
1 0 : Forced LO state
0 1 : Forced HI state
1 1 : Forced LO state
(7) LD
0, LD1, LD pin control (valid only on TX side)
0 0 : ON when unlocked (LO)
0 1 : Air pulse output
1 0 : Forced ON state (LO)
1 1 : Forced OFF state (HI)
(8) Input (00) to test T0 and T1.
Application example
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Communication ICs BU2630F / BU2630FV
Electrical characteristic curves
External dimensions (Units: mm)
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