Rainbow Electronics MAX7032 - Manual (Page 30)

MAX7032
Low-Cost, Crystal-Based, Programmable,
ASK/FSK Transceiver with Fractional-N PLL
30 ______________________________________________________________________________________
LNA
90 °
0 °
RSSI
IF LIMITING
AMPS
ASK
100k Ω
100k Ω
DATA FILTER
7
8
9 10 11 12 14 13
FSK
DEMODULATOR FSK
20
19
RX
DATA
18
15
16
17
30
28
29
24
21
23 22
SERIAL
INTERFACE AND
DIGITAL LOGIC
31
32
CRYSTAL
OSCILLATOR
1/K 25
27
3.0V
REGULATOR
6
26
PA
MAX7032
5 1 2
RX VCO
RX
FREQUENCY
DIVIDER
PHASE
DETECTOR
CHARGE
PUMP
LOOP FILTER
TX
FREQUENCY
DIVIDER
∆Σ
MODULATOR
Σ
I
Q
TX VCO
EXPOSED
PADDLE
LNAIN
LNASRC
TX/RX1 TX/RX2
XTAL1
XTAL2
CLKOUT
HV
IN
AV
DD
ROUT PAV DD PAOUT T/R DV DD ENABLE
DATA
DIO
CS
SCLK
DS-
PDMAX
PDMIN
DS+
RSSI
OP+
DF
IFIN+ IFIN- MIXOUT MIXIN- MIXIN+ LNAOUT
3 4
Functional Diagram