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

General Description

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.

Key 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 schemes SX1257 Data Sheet DS. SX1257.W. APP Rev. 1.2 March 2018 www. semtech. com 1 of 42 Semtech Ordering Information Part Number SX1257IWLTRT Delivery MLPQW-32 Minimum Order Quantity 3’000 pieces.

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Datasheet Details

Part number SX1257
Manufacturer SEMTECH
File Size 1.03 MB
Description Low Power Digital I and Q RF Multi-PHY Mode Transceiver
Datasheet download datasheet SX1257 Datasheet

Full PDF Text Transcription for SX1257 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for SX1257. For precise diagrams, and layout, please refer to the original PDF.

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 ...

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ribution 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 XO 36 MHz Figure A: SX1257 Block Diagram XTA XTB General Description 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 modu

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