1 Features
• 16-channel, AFE for ultrasound applications:
– Input attenuator, LNA, LPF, ADC, and
CW mixer
– Optimized signal chains for TGC and CW
modes
– Digital time gain compensation (DTGC)
– Total gain range: 6dB to 45dB
– Linear input range: 1VPP
• Input attenuator with DTGC:
– 8dB to 0dB attenuation with 0.125dB step
– Supports matched impedance for:
• 50Ω to 800Ω source impedance
• Low-noise amplifier (LNA) with DTGC:
– 14dB to 45dB gain with 0.125dB step
– Low input current noise: 1.2pA/√ Hz
• 3rd-order, linear-phase, low-pass filter (LPF):
– 10MHz, 15MHz, 20MHz, and 25MHz
• Analog-to-digital converter (ADC) with
programmable resolution:
– 14-bit ADC: 75dBFS idle channel SNR at
65 MSPS
– 12-bit ADC: 72dBFS idle channel SNR at
80 MSPS
• LVDS interface with a maximum speed up to
1GBPS
• Optimized for noise and power:
– 90mW/Ch at 1nV/√ Hz, 65 MSPS, TGC mode
– 55mW/Ch at 1.45nV/√ Hz, 40 MSPS,
TGC mode
– 59mW/Ch, CW mode
• Excellent device-to-device gain matching:
– ±0.5dB (typical)
• Low harmonic distortion: –60dBc level
• Fast and consistent overload recovery
• Continuous wave (CW) path with:
– Passive mixer
– Low close-in phase noise of –148dBc/Hz
at 1kHz frequency
– Phase resolution: λ / 16
– Supports 16X, 8X, 4X, and 1X CW clocks
– 12dB suppression of 3rd and 5th harmonics
• Small package: 15mm × 15mm NFBGA-289

2 Applications
• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipment
• Sonar Imaging Equipment
• Multichannel, High-Speed Data Acquisition

3 Description
The AFE5816 is a highly-integrated, analog front-end
(AFE) solution specifically designed for ultrasound
systems where high performance, low power, and
small size are required.