Catalog
Radar Receive Path AFE: 6-Channel LNA/PGA/AAF with ADC
Key Features
• 6 channels of LNA, PGA, AAF
• 1 channel of direct-to-ADC
• Parallel 3.3V CMOS Output
• Programmable third-order low-pass elliptic filter (LPF) from
• 1 MHz to 12 MHz
• Precise channel-to-channel matchingGain: ±0.5dB (-40 to 105°C)Phase: ±5° (-40 to 105°C)
• SPI-programmable gain = 16 dB to 34 dB in 6 dB steps
• Low noise, 3.5 nV/√Hzmaximum of input referred voltage noise
• Low power, 170 mW per channel at 12 bits/80 MSPS
• Selectable Input Impedance: 200Ω or 200kΩ
• Qualified for automotive applications
Description
AI
The AD8283 is designed for low cost, low power, compact size, flexibility, and ease of use. It contains six channels of a low noise preamplifier (LNA) with a programmable gain amplifier (PGA) and an antialiasing filter (AAF) plus one direct-to-ADC channel, all integrated with a single 12-bit analog-to-digital converter (ADC).Each channel features a gain range of 16 dB to 34 dB in 6 dB increments and an ADC with a conversion rate of up to 80 MSPS. The combined input-referred noise voltage of the entire channel is 3.5 nV/√Hzat maximum gain. The channel is optimized for dynamic performance and low power in applications where a small package size is critical.Fabricated in an advanced CMOS process, the AD8283 is available in a 10 mm × 10 mm, RoHS-compliant, 72-lead LFCSP. It is specified over the automotive temperature range of −40°C to +105°C.ApplicationsAutomotive radarAdaptive cruise controlCollision avoidanceBlind spot detectionSelf-parkingElectronic bumper
