RFM64B Datasheet, PDF (12/75 Pages) List of Unclassifed Manufacturers – ISM TRANSCEIVER MODULE

ADVANCED COMMUNICATIONS & SENSING
3. Architecture Description
This section describes in depth the architecture of this ultra low-power transceiver:
VR_PA
PA
RFIO
I
Q
I
LO1 Tx
Q
I
Q
LO2 Tx
LO2 Tx
Wavefo m
generator
r
RFM 64B
LNA
XTAL_P
XO
XTAL_M
LO1 Rx
RSSI
LO2 Rx
OOK
demod
FSK
demod
BitSync
Control
Frequency Synthesizer
LO1 Rx
LO
Generator
I
Q
LO2
Rx
I LO1 Tx
IRQ_0
IRQ_1
MOSI
MISO
SCK
NSS_CONFIG
NSS_DATA
CLKOUT
DATA
TEST
PLL_LOCK
QL ²
Q
I O Tx
Figure 3: RFM64B Detailed Block Diagram
3.1. Power Supply Strategy
To provide stable sensitivity and linearity characteristics over a wide supply range, the RFM64B is
internally regulated. This internal regulated power supply structure is described below:
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