SPI IN

PGA

21 dB to 27 dB

In Step of 3 dB

LNA

15 dB,

18 dB,

21 dB

SPI Logic

16X CLK

LNA IN

16-Phase

Generator

CW Mixer

1X CLK

CW I/Q

OUTPUT

1 of 32 Channels

10-, 12-

Bit

ADC

Reference

DTGC Control

engine

Crosspoint SW

SPI OUT

ATTEN

0 dB to -36 dB

Third-Order LPF

with 10 MHz to

25 MHz Corner

Frequency

Digital

Processing

(Optional)

LVDS

LVDS

OUTPUTS

TGC Control

Signals

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

AFE5832LP

SBAS959 – DECEMBER 2018

AFE5832LP 32-Channel Ultrasound AFE With 18.5-mW/Channel Power, 4-nV/

√Hz, 12-Bit,

40-MSPS or 10-Bit, 50-MSPS Output and Passive CW Mixer

1

1 Features

1

•

32-Channel AFE for Ultrasound Applications:

–

LNA, Attenuator, LPF, ADC, and CW Mixer

–

Digital Time Gain Compensation (DTGC)

–

Total Gain Range: 0 dB to 48 dB

•

Low-Noise Amplifier (LNA) With Programmable

Gain:

–

Low Current Noise of 1pA/rtHz

–

Gain: 21 dB, 18 dB, and 15 dB

–

Linear Input Range: up to 700 mVPP

•

Programmable Attenuator (ATTEN):

–

Attenuation Range (Steps of 0.125 dB):

0 to 36 dB

–

Digital TGC Engine

•

Programmable Gain Amplifier (PGA):

–

Gain: 21 dB, 24 dB, and 27 dB

•

Third-Order, Linear-Phase, Low-Pass Filter (LPF):

–

Cut-off Frequency From 10 MHz to 25 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 Mode: 72-dBFS SNR

–

10-Bit Mode: 61-dBFS SNR

•

TGC Mode Power :

–

Lowest Power of 18.5 mW/Ch in Low Power

Mode, 4 nV/rtHz, 10-Bit, 20 MSPS, LVDS (2x

rate)

–

27.8 mW/Ch at 3 nV/rtHz in Low Noise Mode

at 12-Bit, 40 MSPS

–

24.4 mW/Ch at 4 nV/rtHz in Low Power Mode

at 12-Bit, 40 MSPS

•

Excellent Device-to-Device Gain Matching:

–

±0.5 dB (Typical)

•

Harmonic Distortion: –55 dBc level

•

Fast and Consistent Overload Recovery

•

Continuous Wave (CW) Path With:

–

Low Close-In Phase Noise of –148 dBc/Hz at

1-kHz Frequency Offset off 5-MHz Carrier

–

Power Consumption With No Signal: 10

mW/Ch

–

Phase Resolution: λ/16

–

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

•

In-Probe Electronics

3 Description

The AFE5832LP is a highly integrated, analog front-

end (AFE) solution specifically designed for portable

ultrasound systems where high performance, low

power, and small size are required.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

AFE5832LP

nFBGA (289)

15.00 mm × 15.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Block Diagram