Higher SNR
It is no secret that the fidelity of
the signals in an ultrasound system directly impacts the quality of the generated
image. Higher SNR enables higher-resolution images and allows for easier detection
and diagnosis of issues by medical professionals.
TI reference designs for achieving
higher SNR include:
- High-Resolution, High-SNR True Raw Data Conversion Reference Design for Ultrasound CW Doppler. Completing the continuous-wave (CW) Doppler
signal chain with the analog front-end (AFE), this reference design features the ADS8900B 20-bit successive approximation register analog-to-digital
converter (SAR ADC), achieving an among the industry’s best SNR of 101.2dB for the entire signal chain. The higher sampling rate achieved by this design gives you more flexibility in implementing post-processing to improve SNR even
further.
- 2.3 nV/, Differential, Time Gain Control (TGC) DAC Reference Design for Ultrasound. This reference design delivers exceptionally low noise TGC
signal for ultrasound applications, enabling TI’s AFE58xx to resolve lower-amplitude signals and thus achieve deeper and higher-resolution images. The included full design simulation capability allows you to add constraints, change
components and check the resulting impact on noise performance.
High-efficiency Power Solutions for Ultrasound Scanners
Improving power efficiency in
ultrasound scanners is critical in order to enable portability, optimize overall
power consumption and reduce power-supply design complexity.
TI reference designs for improving
power efficiency include:
- 400-W Continuous, Scalable, ±2.5- to ±150-V, Programmable Ultrasound Power Supply Reference Design. This 400W continuous design can generate
scalable output voltages from ±2.5V to ±50V for low- and mid-voltage rails and up to ±150V for high-voltage rails, delivering up to 89% efficiency from a 24V input at full load.
- Programmable ±100-V, High-Current, Floating Linear Regulator Reference Design for Ultrasound Systems. This design replaces passive and active
noise filters by using a linear regulator (LDO) approach, while supporting an output voltage between ±2.5V and ±100V. It can also enable shear wave or elastography modes by using power metal-oxide semiconductor field-effect transistors
(MOSFETs) to scale the current.
- Low-Noise Fixed Drop-Out ±2.5 to ±12-VOUT 3A Power Supply Reference Design for Ultrasound CW Pulser. This reference design is the simplest way
to provide an ultra-low-noise, low-ripple, programmable low-voltage power supply to support CW mode, adjustable by software.
- Low-Voltage, Low-Noise Power-Supply Reference Design for Ultrasound Front End. This reference design provides the complete power-supply solution
for ultrasound analog front ends such as the AFE5818, able to drive up to 128 channels and up to 36W. It optimizes power efficiency and reduces component count, while providing overcurrent protection and maintaining ultra-low
noise.
TI’s extensive portfolio can provide complete, state-of-the-art solutions that maximize SNR, providing higher-quality images while simultaneously optimizing power efficiency and reducing design complexity.