SX1257 Datasheet - Semtech

SX1257 Low Power Digital I and Q RF Multi-PHY Mode Transceiver

The SX1257 is a highly integrated RF front-end to digital I and Q modulator/demodulator Multi-PHY mode transceiver capable of supporting multiple constant and non-constant envelope modulation schemes. It is designed to operate over the 862 to 960 MHz European, North American and Japanese ISM (Indust.

SX1257 Low Power Digital I and Q RF Multi-PHY Mode Transceiver RF_IN VBAT VR_ANA1 VR_ANA2 Power Distribution System 0 to -48 dB with 6 dB steps VR_DIG 0 to -30 dB with 2 dB steps RX pre-filter CT  RX pre-filter CT  RESET 1b I_OUT 1b Q_OUT Single to Diff Control Registers and Interface RF_OP RF_ON ATT Driver Div by 2 Div by 2 Fractional-N Frequency Synthesizer Fractional-N Frequency Synthesizer TX Filter DAC TX Filter DAC MISO MOSI SCK NSS CLKIN CLKOUT 1b I_IN 1b Q_IN X.

SX1257 Features

* Fully flexible I and Q modulator and demodulator

* Half or full-duplex operation

* Bullet proof RX LNA

* Analog TX and RX pre-filtering

* Programmable tap TX FIR-DAC filter

* Linear TX amplifier for both constant and non-constant envelope modulation

SX1257 Datasheet (1.03 MB)