1 Features

• 32-Channel, AFE for Ultrasound Applications:

– Input Attenuator, LNA, LPF, ADC,

and CW Mixer

– Digital Time Gain Compensation (DTGC)

– Total Gain Range: 12 dB to 51 dB

– Linear Input Range: 800 mVPP

• Input Attenuator With DTGC:

– 8-dB to 0-dB Attenuation With 0.125-dB Step

– Supports Matched Impedance for:

– 50-Ω to 800-Ω Source Impedance

• Low-Noise Amplifier (LNA) With DTGC:

– 20-dB to 51-dB Gain With 0.125-dB Step

– Low Input Current Noise: 1.2 pA/√Hz

• 3rd-Order, Linear-Phase, Low-Pass Filter (LPF):

– 5 MHz, 7.5 MHz, 10 MHz, and 12.5 MHz

• 16 ADCs Converting at 12-Bit, 80 MSPS or 10-bit,

100 MSPS:

– Each ADC Converts Two Sets of Inputs at Half

Rate

– 12-Bit ADC: 72-dBFS SNR

– 10-Bit ADC: 61-dBFS SNR

• Optimized for Noise and Power:

– 35 mW/Ch at 2.1 nV/√Hz, 40 MSPS

– 42 mW/Ch at 1.4 nV/√Hz, 40 MSPS

– 52 mW/Ch at 1.3 nV/√Hz, 40 MSPS

– 60 mW/Ch in CW Mode

• Excellent Device-to-Device Gain Matching:

– ±0.5 dB (Typical)

• Low Harmonic Distortion: –55 dBc

• Fast and Consistent Overload Recovery

• Continuous Wave (CW) Path With:

– Low Close-In Phase Noise of –151 dBc/Hz

at 1-kHz Frequency Offset Off 2.5-MHz Carrier

– Phase Resolution: λ / 16

– Supports 16X CW Clock

– 12-dB Suppression on Third and Fifth

Harmonics

• LVDS Interface With a Speed Up to 1 Gbps

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

2 Applications

• Medical Ultrasound Imaging

• Nondestructive Evaluation Equipment

• Sonar Imaging Equipment

• Multichannel, High-Speed Data Acquisition

3 Description

The AFE5832 device is a highly-integrated, analog

front-end solution specifically designed for ultrasound

systems where high performance, low power, and

small size are required.