T/R Switch
The LM96530 is an eight-channel monolithic high-voltage, high-speed T/R (Transmit/Receive) switch for multichannel medical ultrasound applications. It contains eight high-voltage T/R switches with integrated clamping diodes. This chip protects the inputs of the receive channel's Low Noise Amplifier from the high-voltage pulses of the transmit channel. This chip is suitable for low-power operation, which is the reason why it was selected.
AFE
The LM96511 is an 8-channel integrated analog front end (AFE) module for multi-channel applications,particularly medical ultrasound. Each of the 8 signal paths consists of a low noise amplifier (LNA), a digitally programmable variable gain amplifier (DVGA) and a 12-bit, 40 Mega Samples Per Second (MSPS) analog-todigital converter (ADC) with Instant Overload Recovery (IOR).
Beamformer
The LM96570 is an eight-channel monolithic beamformer for pulse generators in multi-channel medical ultrasound applications. It is well-suited for use with National’s LM965XX series chipset which offers a complete medical ultrasound solution targeted towards low-power, portable systems.
Pulser
The LM96550 is an eight-channel monolithic high-voltage, high-speed pulse generator for multi-channel medical ultrasound applications. It is well-suited for use with National’s LM965XX series chipset which offers a complete medical ultrasound solution targeted towards low-power, portable systems.