Low-Cost, 308MHz, 315MHz, and 433.92MHz
FSK Transceiver with Fractional-N PLL
Functional Diagram
LNAOUT MIXIN+ MIXIN-
MIXOUT
IFIN+
IFIN-
9
10
11
12
14
13
LNAIN
7
LNA
0 °
Σ
IF LIMITING
AMPS
FSK
DEMODULATOR
LNASRC
8
90 °
RSSI
20 DF
I
Q
RX VCO
100k ?
100k ?
19 OP+
RX
FREQUENCY
21 RSSI
XTAL1
31
DIVIDER
DATA FILTER
18 DS+
XTAL2
32
CRYSTAL
OSCILLATOR
PHASE
DETECTOR
TX
FREQUENCY
DIVIDER
15 PDMIN
CHARGE
PUMP
16 PDMAX
TX VCO
HVIN 27
3.0V
REGULATOR
LOOP FILTER
MODULATOR
17 DS-
RX
DATA
AVDD
6
EXPOSED
PAD
MAX7031
PA
30 AGC0
29 AGC1
DIGITAL LOGIC
28 AUTOCAL
24 DATA
2
ROUT
1
PAVDD
5
PAOUT
3
TX/RX1
4
TX/RX2
22
T/R
26
DVDD
23
ENABLE
18
______________________________________________________________________________________
相关PDF资料
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相关代理商/技术参数
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