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WIRELESS, SENSING & TIMING SX1238 - Fully Integrated Transceiver with +27dBm TX Power
SX1238
DATASHEET
VDD2 RXEN MODE RX RFI
PREAMP
VBAT1&2
VR_ANA
VR_DIG
LNA
Power Distribution System
Single to Differential
Mixers
RC Oscillator
Decimation & Filtering
Demodulator & Bit Synchronizer
ANT IND
PA
PA0
Ramp & Control
VDD1 PAout PDET TXEN TX RFO VR_PA Preamp/PA
Tank Inductor
Loop Filter
Division by 2,4, or 6
Frac-N PLL Synthesizer
XO 32 MHz
Interpolation & Filltering Modulator
RSSI AFC
XTAL
GND
Frequency Synthesis
Transmitter Blocks
Receive Blocks
Control Blocks
Primary Analog Primary Digital
Packet Engine & 66 byte FIFO Control Registers - Shift Registers - SPI Interface
RESET
SPI
RXTX
DIO0 DIO1 DIO2 DIO3 DIO4 DIO5
GENERAL DESCRIPTION
The SX1238 is a fully integrated I