High-Resolution: High-SNR True Raw Data Conversion Reference Design for Ultrasound CW Doppler
Description
This reference design is a continuous wave (CW) signal conditioning for ultrasound imaging systems (64-: 128-: 192-: 256-channel ultrasound system). This design features 20-bit fully differential simultaneous sampling with true raw data available for processing. It consists of a fully-differential signal path for I and Q channels: each using high-performance SAR analog-to-digital converter (ADCs) (ADS8900B): fully-differential precision amplifier (THS4551): a dual low-noise: low dropout (LDO) voltage regulator (TPS7A8801) and a precision voltage reference (REF5050). TIDA-01351 can be interfaced with the PH1-EVM controller through the multiSPI™ digital interface: and the performance can be evaluated using a PC-based graphical user interface (GUI) from any PC through the USB interface.
Features
- Two simultaneous channels (I and Q) fully-differential signal chain providing zero-latency true raw data with SNR of 101.2 dB and ENOB of 16.45Eight-channel summing: filtering: buffering and gain implemented in single-stage high-bandwidth: low-power: low-noise: single supplyHigh sampliing rate of 1 MSPS allows flexibility in post-processing to improve SNR and resolutionBandpass filtering for frequency range of 50 Hz to 20 kHzOperates from single 6-V power supply with total power consumption of 258 mWDesigned using 20-bit: 1-MSPS SAR ADC (ADS8900B) with INL of 1 ppm and SNR of 104.5 dB
Applications
- Mother & neonatal care monitor
- Ultrasound smart probe
- Ultrasound scanner
Product Categories
- Amplifiers