Texas Instruments (TI) announced the industry's first integrated eight-channel transmit/receive (T/R) switch for ultrasound systems. The TX810 meets the designer's need for small portable ultrasound systems while reducing time to market (click here to watch the video). The TX810 integrates a protection diode bridge and a clamp diode for eight channels to prevent the transmitter's high voltage pulses from damaging the receiving electronics of the ultrasound system. Compared to discrete solutions for portable to medium-sized ultrasound systems, the device saves more than 50% of board space and reduces the number of components required for ease of operation, thereby increasing design reliability.
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Key Features and Benefits of the TX810 T/R Switch • Eight integrated channels save 50% to 75% board space for different T/R architectures compared to discrete solutions.
• Integrated features reduce component count and make component operation easier, speeding design and increasing reliability.
• Programmable bias current allows the designer to adjust and reduce power consumption:
o Use a 3-bit interface to set the 7-mA range of bias current
o Power-down mode with reduced power consumption
• Optimal insertion loss is 0.9 dB and 1.3 dB at 7-mA bias current and 1-mA bias current, respectively, to maintain input/output signal integrity at 400Ω load.
• The TX810 completes the signal chain products of TI's ultrasound systems, including the AFE58xx series of analog front-end ICs, the TX734 high-voltage pulser, and a variety of embedded processors for medical imaging, power management products, frequency and interfaces.
Availability
The TX810 is available in a 36-pin 6 mm x 6 mm QFN package. Samples are available now and production is expected to begin in December 2009.
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