CXA3275Q Datasheet, PDF (15/22 Pages) Sony Corporation – PLL/OSC/MIX IC for Digital Tuner

CXA3275Q
Charge Pump Current Table
Charge pump current
CP
300µA
0
900µA
1
Reference Divider Frequency Division Ratio Table
R3
R2
R1
R0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
Frequency division ratio
2
4
8
16
32
64
128
256
512
6
12
24
48
96
192
384
Band Switch Output Table
Band switch data
BS1 BS2 BS3 BS4
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
1
Band switch pins
BS1 BS2 BS3 BS4
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF OFF ON OFF
OFF OFF OFF ON
Operating mode
(MIX/OSC)
UHF
VL
VH
UHF
<Supplement>
• Operation for Power On
When the data transfer is not performed after the power on, both the mixer and oscillator blocks operate in
UHF as the register data are all "0" by the power-on reset.
At this time, the Pin 33 (VT) voltage becomes the value equal to the varicap diode supply voltage (30V) when
the external clock is input to Pin 34 (XI) or when the crystal is connected to this pin for self-oscillation. When
the external clock is not input simultaneously with the power-on or the crystal is not connected, the Pin 33
voltage becomes unstable.
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