High-Resolution, High-SNR True Raw Data Conversion Reference Design for Ultrasound CW Doppler
TIDA-01351
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- High-Res, High-SNR True Raw Data Conversion Ref Design for Ultrasound CW Doppler (Rev. B)
(PDF 8399 KB)
18 Oct 2017
Description
The TIDA-01351 is a continuous wave (CW) signal conditioning subsystem 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. This TI Design consists of a fullydifferential signal path for I and Q channels, each using high-performance SAR analog-to-digital converters (ADCs) (ADS8900B), fully-differential precision amplifiers (THS4551), a dual low-noise, lowdropout (LDO) voltage regulator (TPS7A8801), and a precision voltage reference (REF5050). The 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 application (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 101.2dB and ENOB of 16.45
- 8-channel summing, filtering, buffering, and gain implemented in single-stage-high-bandwidth, low-power, low-noise, single supply
- High sampliing rate of 1 MSPS allows flexibility in post-processing to improve SNR and resolution
- Bandpass filtering for frequency range of 50 Hz to 20 kHz
- Operates from single 6-V power supply with total power consumption of 258 mW
- Designed using 20-bit, 1 MSPS SAR ADC (ADS8900B) with INL of 1ppm and SNR of 104.5dB
See the Important Notice and Disclaimer covering reference designs and other TI resources.