• 8-Channel Complete Analog Front-End
  • LNA, VCAT, PGA, LPF, ADC, and CW Mixer
• Programmable Gain Low-Noise Amplifier (LNA)
  • 24-, 18-, 12-dB Gain
  • 0.25-, 0.5-, 1-VPP Linear Input Range
  • 0.63-, 0.7-, 0.9-nV/rtHz Input Referred Noise
  • Programmable Active Termination
• 40-dB Low-Noise Voltage Controlled Attenuator (VCAT)
• 24-/30-dB Programmable Gain Amplifier (PGA)
• Third-Order Linear Phase Low-Pass Filter (LPF)
  • 10, 15, 20, 30 MHz
• 14-Bit Analog-to-Digital Converter (ADC)
  • 77 dBFS SNR at 65 MSPS
  • LVDS Outputs
• Noise, Power Optimizations (Without Digital Demodulator)
  • 158 mW/CH at 0.75 nV/rtHz, 65 MSPS
  • 101 mW/CH at 1.1 nV/rtHz, 40 MSPS
  • 80 mW/CH at CW Mode
• Excellent Device-to-Device Gain Matching
  • ±0.5 dB (Typical) and ±1 dB (Maximum)
• Digital I/Q Demodulator after ADC
  • Wide Range Demodulation Frequency
  • <1 kHz Frequency Resolution
  • Decimation Filter Factor M = 1 to 32
  • 16xM Tap FIR Decimation Filter
  • LVDS Rate Reduction after Demodulation
  • On-Chip RAM With 32 Preset Profiles
• Low Harmonic Distortion
• Low-Frequency Sonar Signal Processing
• Fast and Consistent Overload Recovery
• Passive Mixer for Continuous Wave Doppler (CWD)
  • Low Close-in Phase Noise –156 dBc/Hz at 1 kHz off 2.5-MHz Carrier
  • Phase Resolution of 1/16λ
  • Support 16×, 8×, 4×, and 1× CW Clocks
  • 12-dB Suppression on Third and Fifth Harmonics
  • Flexible Input Clocks
• Small Package: 15 mm × 9 mm, 135-BGA

• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipments
• Sonar Applications

The AFE5809 device is a highly-integrated analog front-end (AFE) solution specifically designed for ultrasound systems in which high performance and small size are required. The AFE5809 device integrates a complete time-gain-control (TGC) imaging path and a CWD path. The device also enables users to select one of various power and noise combinations to optimize system performance. Therefore, the AFE5809 device is a suitable ultrasound AFE solution not only for high-end systems, but also for portable ones.