TI AFE5809 Analog front end for ultrasonic application Datasheet

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AFE5809: Analog Front End for
Ultrasonic Applications
Imaging
Introduction
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Purpose
− To introduce TI’s AFE5809 for Ultrasonic Rx path
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Objective
− To discuss AFE5809’s features and benefits
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Content
Ultrasound vs Ultrasonic
Sonar applications
Non-destructive testing applications
AFE5809 Analog Front End for Ultrasonic Rx
Why is the AFE5809 so great?
Ultrasonic vs Ultrasound
 Ultrasonic refers to more than just
Medical Ultrasound.
Sonar
 It refers to any application that
uses high frequency sound pulses
or electromagnetic waves to
measure distance, velocity, or
material characteristics.
NDT
 Basic operation and electronic
components are similar, but
frequencies, distances,
measurement environments, and
total number of channels can vary
greatly.
Sonar Applications
 Sonar:
− Uses sound waves to measure or detect objects on or under
the surface of the water.
− Similar to medical ultrasound, beamforming is used and an
array of receivers produces spatial differentiation.
− Unlike medical ultrasound, lower frequency's and higher gain
ranges are sometimes needed to measure very far distances.
− Typical Sonar applications include:
• Fish finders – lower channel count, smaller size
• Deep water survey – longest distances
• Military and Stealth applications
Non-Destructive Testing (NDT)
 NDT:
− Refers to a wide group of analysis techniques used to
evaluate the properties of a material, component or system
without causing damage
− One type of NDT test is ultrasonic testing
• Uses ultrasonic pulse waves launched into materials to
detect internal flaws or characterize materials.
− Has higher frequency and dynamic range requirements
compared to medical ultrasound.
− Typical NDT ultrasonic applications include:
• Thickness measurement
• Flaw detection
• Stud finders
Ultrasonics: Sonar / NDT
Embedded processing
Analog signal chain
FET
Driver
Tx Buffer
Amp
Front End
Transducer
HV
MUX
Passive
LPF
Transmit
Beamformer
DAC
Receive
Beamformer
T/R
Switch
LNA
PGA
VCA
Mid
Analog Front
End
Amp Stage
Low
Pass
Filter
Beamformer
Control Unit
Preprocessing
Clocking
ADC
Back
End
CW (analog)
Beamformer
ADC
B Mode
Processing
Spectral
Doppler
Processing
Color/Power
Doppler
Processing
Scan Conversion
Post Processing
Plug
AC/DC Supply
With Green Mode
Controller
AC Line
System
Power
Supply
Voltage
Super.
OS/UI
Main Power Supply
Audio
Amp
Common Interfaces
Power
LPW
RS232
USB
1394
802.11
Backlight
Touchscreen
Memory
Interfaces
MMC/SDIO
IDE/ATA
AFE5809:
AFE with Passive CW Mixer & Digital I/Q Demod
Features
Benefits
• 8 CH AFE with LNA, VCAT, PGA, LPF, ADC, CW Mixer
and integrated:
• Digital I/Q demodulator
• Continuous wave Doppler (CWD)
• 14 bit ADC w/ 77 dBFS SNR.
• Selectable power/noise combo’s to optimize system
• 158mW/ch at 0.75nV/rtHz, 65MSPS
• 99mW/ch at 1.1nV/rtHz, 40MSPS
• 80mW/ch at CW Mode
• Package: 15 mm x 9 mm, 135-BGA
• Complete AFE for Ultrasound and Ultrasonic systems
• Lowers interface rate, cost of FPGA
• Measures blood flow velocity in Spectral Doppler systems
• Best in-class noise levels for crisp image qualities.
• Ability to fine-tune power consumption for portable
systems
Applications
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Ultrasound Imaging
Non-destructive Testing
Sonar
Military Radar
Samples: Now
EVM: Now
Production: Released!
Why is the AFE5809 so great?
What it is: Complete 8 ch front end integrating all of the components of a
typical Ultrasound Receiver.
Features and Benefits:
 Complete front end solution = easier design and lowered BOM cost
 Digital I/Q demodulation = reduced FPGA processing requirements
 Lowest noise and lowest power = highest image quality at lowest power
Summary
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Complete 8 ch front end integrating all of the components of a
typical reciever for ultrasonic applications such as Sonar or
NDT.
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Features and Benefits include
• Complete front end solution = easier design and lowered BOM cost
• Digital I/Q demodulation = reduced FPGA processing requirements
• Lowest noise and lowest power = highest image quality at lowest
power
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To learn more or order samples or evaluation module please
visit www.ti.com/product/AFE5809
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