AFE5818ZBV

具有 CW 无源混频器的 16 通道超声波模拟前端，噪声为 0.75nV/rtHz，功耗为 124mW/通道 289-NFBGA -40 to 85

Description

The AFE5818 is a highly-integrated, analog front-end AFE solution specifically designed for ultrasound systems where high performance and small size are required. The device integrates a complete time-gain-control TGC imaging path and a continuous wave Doppler CWD path. The device also allows various power and noise combinations to be selected to optimize system performance. Therefore, the AFE5818 is a suitable ultrasound AFE solution for high-end and portable systems

Features

• 16-Channel, Complete Analog Front-End:

– LNA, VCAT, PGA, LPF, ADC, and CW Mixer

• LNA with Programmable Gain:

– Gain: 24 dB, 18 dB, and 12 dB

– Linear Input Range: 0.25 VPP, 0.5 VPP, and 1 VPP

– Input-Referred Noise: 0.63 nV/√Hz, 0.7 nV/√Hz, and 0.9 nV/√Hz

– Programmable Active Termination

• Voltage-Controlled Attenuator VCAT: 40 dB

• Programmable Gain Amplifier PGA: 24 dB and 30 dB

• Total Signal Chain Gain: 54 dB max

• 3rd-Order, Linear-Phase LPF:

– 10 MHz, 15 MHz, 20 MHz, 30 MHz, 35 MHz, and 50 MHz

• Analog-to-Digital Converter ADC:

– 14-Bit ADC: 75-dBFS SNR at 65 MSPS

– 12-Bit ADC: 72-dBFS SNR at 80 MSPS

• LVDS Interface Maximum Speed of 1 Gbps

• Noise and Power Optimizations Full-Channel:

– 140 mW/Ch at 0.75 nV/√Hz, 65 MSPS

– 91.5 mW/Ch at 1.1 nV/√Hz, 40 MSPS

– 80 mW/Ch at CW Mode

• Excellent Device-to-Device Gain Matching:

– ±0.5 dB typical and ±1.1 dB max

• Low Harmonic Distortion

• Fast and Consistent Overload Recovery

• Passive Mixer for CWD:

– Low Close-In Phase Noise:

–156 dBc/Hz at 1 kHz Off 2.5-MHz Carrier

– Phase Resolution: λ / 16

– Supports 16X, 8X, 4X, and 1X CW Clocks

– 12-dB Suppression on 3rd and 5th Harmonics

– CWD High-Pass Filter Rejects Undesired Low-Frequency Signals < 1 kHz

• Small Package: 15-mm × 15-mm NFBGA-289

Applications

• Medical Ultrasound Imaging

• Nondestructive Evaluation Equipment

• Sonar Imaging Equipment

• Multichannel, High-Speed Data Acquisition