UAA2068 Ver la hoja de datos (PDF) - Philips Electronics
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UAA2068 Datasheet PDF : 20 Pages
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Philips Semiconductors
Transmit chain and synthesizer with
integrated VCO for DECT
Product specification
UAA2068G
Table 1 Mode control; note 1
BLOCK STATUS
VCO, buffer, doubler, RF switch, TX preamplifier and LO buffer
powered-down
VCO, buffer, doubler, RF switch and TX preamplifier powered-up
LO buffer powered-down
Nominal RF signal at TX output
VCO, buffer, doubler, RF switch and TX preamplifier powered-up
LO buffer powered-down
No RF signal output
VCO, buffer, doubler, RF switch and LO buffer powered-up
TX preamplifier powered-down
Nominal RF signal at LO buffer output
VCO, buffer, doubler, RF switch and LO buffer powered-up
TX preamplifier powered-down
No RF signal output
To power-down PLL blocks; notes 2 and 3
To power-up PLL blocks; notes 2 and 3
All blocks in power-down state; notes 2 and 3
New PLL division ratio is loaded and the PLL blocks are powered-up
on the rising edge of S_EN; note 3
VCO_ON
0
1
1
1
1
1
1
0
1
R_OFF
X
1
1
0
0
X
X
X
X
Notes
1. X = don’t care.
2. PLL blocks are the main divider, reference divider, phase detector and charge pump.
3. A reference signal is needed on pin XTAL for correct operation.
T_EN
X
1
0
0
1
X
X
X
X
S_EN
X
X
X
X
X
0
1
0
0 to 1
1998 Nov 19
8
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