Texas Instruments Inc. (TI) has launched an integrated, eight-channel, transmit/receive (T/R) switch for ultrasound systems. The TX810 addresses designers’ need to build smaller portable ultrasound systems, while speeding time to market.
The TX810 integrates a protection diode bridge and clamp diodes for each of its eight channels to prevent the high-voltage pulses of the transmitter from damaging the receive electronics of the ultrasound system. The device saves more than 50 percent board space over discrete solutions in portable to mid-range ultrasound systems, and the component reduction and easier handling brings higher reliability to designs.
Key features and benefits of the TX810 T/R switch include:
• Eight integrated channels save more than 50 to 75 percent board space over discrete solutions, depending on T/R architectures
• Integration allows for faster designs and higher reliability due to fewer devices and easier handling of components
• Programmable bias currents allow designers to adjust and reduce power consumption:
o 3-bit interface used to program a 7mA range of bias currents
o Power-down mode to reduce power consumption
• Optimized insertion loss maintains integrity of input/output signal at 400Ω load with 0.9dB at 7mA bias current and 1.3dB at 1mA bias current
Texas Instruments TX810 Transmit/Receive Switch
Texas Instruments
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