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Features

? AEC-Q100 qualified

? Single-channel transmitter with

differential output Pout: 13 dBm

? On-chip low phase noise VCO

? Three single-ended RX channels

? Low noise figure NFssb: 11 dB

? High programmable conversion gain up to

60 dB

? IF variable gain function

? IF switchable bandpass filters

? Rail-to-rail single-ended IF output

? Programmable VC0 driver output at 750 MHz

and 1.5 MHz or 23 kHz

? On-chip power and temperature sensors

? 3.3 V supply voltage

? 4-pin SPI for chip configuration

? QFN 6x6 mm2 and 40 leads - wettable flanks

Description

STRADA431 is a single-chip transceiver for automotive radar able of covering the frequency band from 24 to 24.25 GHz in order to be compliant with ISM band applications.

STRADA431 can be operated by a single power supply at 3.3 V thanks to integrated LDOs.

The device consists of:

? One differential RF transmitter

? Three single-ended RF receivers

and it is full configurable via SPI.

The transmitter part is based on:

? On-chip voltage-controlled oscillator (VCO) controlled by an external fine tuning voltage

(VTUNEF pin) and a coarse digital control driven via SPI;

? Two stages of Power amplifier (PA) digitally-controlled;

? Two output signals, proportional to VCO output frequency:

– DIV_OUT pin with 2 possible frequency ranges: 1.5 MHz or 23 kHz dividing RF

signal by 2 14 or 2 20

– HV _DIV_OUT with a frequency around 750 MHz dividing RF signal by 25.

The transmitter delivers a typical output power of 13 dBm to the antenna.

Each receiver chain consists of:

? A high linearity down converter

? A VGA with 16 steps of programmable gain and band-pass filter with possibility to

center the cut-off frequencies (High Pass filter = 60 kHz; Low Pass filter = 500 kHz or

1 MHz configurable via SPI).

? IF analog output

STRADA431 includes monitoring functions for compliancy to ISO-26262 Road Vehicles Functional Safety: junction temperature sensor, transmitted output power detector and complete Rx chain via Test-Tone.

Test-Tone can be used also for band pass filter calibration.