• ADAR7251WBCSZ
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The ADAR7251 is a 16-bit, 4-channel, simultaneous sampling analog-to-digital converter (ADC) designed especially for applications such as automotive LSR-FMCW or FSK-FMCW radar systems. Each of the four channels contains a low noise amplifier (LNA), a programmable gain amplifier (PGA), an equalizer, a multibit Σ-Δ ADC, and a decimation filter. The front-end circuitry is designed to allow direct connection to an MMIC output with few external passive components. The ADAR7251 eliminates the need for a high order antialiasing filter, driver op amps, and external bipolar supplies. The ADAR7251 also offers precise channel-to-channel drift matching. The ADAR7251 features an on-chip phase-locked loop (PLL) that allows a range of clock frequencies for flexibility in the system. The CONV_START input and DATA_READY output signals synchronize the ADC with an external ramp for applications such as FSK-FMCW radar. The ADAR7251 supports serial and parallel interfaces at programmable sample rates from 300 kSPS to 1.8 MSPS, as well as easy connections to digital signal processors (DSPs) and microcontroller units (MCUs) in the system. Applications Automotive LSR systems Data acquisition systems

rohs_statusCompliant
supply_voltage_dc2.97 V (min)
lead_free_statusContains Lead
packagingTray
sample_rate1.80 MHz
lifecycle_statusActive
number_of_bits16
pin_count48
Resolution (Bits)16bit
Sampling Rate1.8MSPS
Supply Voltage TypeSingle
Supply Voltage Min2.97V
Supply Voltage Max3.6V
ADC / DAC Case StyleLFCSP
No. of Pins48Pins
Input Channel TypeDifferential, Single Ended
Data InterfaceParallel
Operating Temperature Min-40°C
Operating Temperature Max125°C
PackagingEach
Product Range-
Automotive Qualification Standard-
RoHS Phthalates CompliantYes
MSLMSL 3 - 168 hours
SVHCNo SVHC (07-Jul-2017)
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