SX1235IMLTRT Ver la hoja de datos (PDF) - Semtech Corporation

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SX1235IMLTRT

EN300 220 Category 1 Compliant Transceiver

Semtech Corporation 

SX1235

WIRELESS & SENSING

DATASHEET

This product datasheet contains a detailed description of the SX1235 performance and functionality. Please consult the

Semtech website for the latest updates or errata.

1. General Description

The SX1235 is a single-chip integrated transceiver circuit that is optimized for EN 300 220-1 category 1 receiver

applications. The fully integrated architecture of the transceiver is combined with an automated packet engine and top level

sequencer. In conjunction with a 64 byte FIFO these automate the entire process of packet transmission, reception and

acknowledgement without incurring the consumption penalty common to many transceivers that feature an on-chip MCUs.

Being easily configurable, it greatly simplifies system design and reduces external MCU workload to a minimum. The small

external BOM is limited to a quartz crystal frequency reference, passive decoupling, matching and filtering components.

SX1235 is intended for use as a high-performance, low-cost, FSK and OOK RF transceiver for robust, frequency agile,

half-duplex, bidirectional RF links. Where stable and constant RF performance is required over the full operating range of

the device down to 1.8 V the receiver and PA are fully regulated. For transmit intensive applications - a high efficiency PA

can be selected to optimize the current consumption.

The SX1235 features high receiver sensitivity and low receive current, equating to a high link budget, 143dB (-123dBm

sensitivity in conjunction with +20dBm Pout) and long battery life. The SX1235 complies with both ETSI and FCC

regulatory requirements and is available in a 5 x 5 mm QFN 24 lead package.

1.1. Simplified Block Diagram

Rev 1 - December 2012

Figure 1. Block Diagram

Page 10

www.semtech.com

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