TDA8050A Datasheet, PDF (3/28 Pages) NXP Semiconductors – QPSK transmitter

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I_IN ⁵
6
I_INC
7
Q_IN
8
Q_INC
13
DVCC
DGND ¹⁸
14
CLK
15
DATA
16
EN
23
LOCK
AVCC1 AGND1
26
9
MODULATOR
IF_FILTC RF_OUTC RF_INC
IF_FILT RF_OUT RF_IN
24 25
28 27 30 31
×
Σ
×
×
SW_CAP
AVCC2 AGND2
32
29
4
CONVERTER
1
3
2
OUTEN
BUF_OUTC
BUF_OUT
3-WIRE BUS TRANCEIVER
90
0
1/2
TDA8050A
DAC
CHARGE
PUMP
DIGITAL
PHASE
COMPARATOR
FIXED
MAIN DIVIDER
PROGRAMMABLE
REF DIVIDER
PROGRAMMABLE
MAIN DIVIDER
PROGRAMMABLE
REF DIVIDER
DIGITAL
PHASE
COMPARATOR
PROGRAM-
MABLE
CHARGE
PUMP
12
CP_MOD
10 11
17
22 21
TKAMOD
OSC_IN
TKBCONV
TKBMOD
TKACONV
20
TUNECONV
19
FCE433
CP_CONV
Fig.1 Block diagram.