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Texas Instruments ADS8900B | Demoboard TIDA-01351
High-Resolution, High-SNR True Raw Data Conversion Reference Design for Ultrasound CW Doppler
Overview
| Topology | Other Topology |
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
Typical applications
- Mother and Neonatal Care Monitors / Ultrasound Scanners
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Ti | Ø ID(mm) | Ø OD(mm) | Qty. | Pins | Type | Mount | IR(A) | Working Voltage(V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance1 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | Packaging Unit4000 | – | – | – | – | – | |||||
 | WA-SMSI SMT Steel Spacer with internal Thread M3, –, – | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SMSI SMT Steel Spacer with internal Thread M3 | – | – | – | – | Operating Temperature -55 °C up to +150 °C | – | – | – | Length5 mm | – | – | – | PackagingTape and Reel | Inner ThreadM3 | Inner Diameter4.2 mm | Outer Diameter6 mm | Packaging Unit650 | – | – | – | – | – | ||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | Insulation Resistance1000 MΩ | – | Length5.08 mm | – | – | – | PackagingBag | – | – | – | – | Pins2 | TypeStraight | MountTHT | Rated Current3 A | Working Voltage250 V (AC) |