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.