LM96570 Datasheet | National Semiconductor

Description 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 plete medical ultrasound solution targeted towards low-power, portable systems. The LM96570 offers eight P and N output channels with individual delays of up to 102.4 µs operating at pulse rates of up to 80 MHz. A pulse sequence is launched on all channels simultaneously through a single firing signal. Advanced features include delay resolution down to 1/1280 µs and programmable patterns of up to 64 pulses. Pulse patterns and delay settings are pre-programmed through a serial interface, thereby simplifying the timing requirements on the driving circuitry. The LM96570 is packaged in a 32-pin LLP. September 3, 2010 Features - Full control over selecting beam directions and pulse - - - - patterns by programming individual channel parameters Outputs interface seamlessly with positive and negative inputs on octal high-voltage pulser ICs Beamformer timing provides: - Delay resolution of 1/1280 μs - Delay range of up to 100 μs Pulse patterns are locally generated with: - Sequences of up to 64 pulses - Pulse width modulation at 80 MHz 2.5V to 3.3V CMOS logic interface Key Specifications I/O voltage Core supply voltage Output pulse rate Reference frequency 2.5 to 3.3 1.8 80 40 (±5%) V V MHz MHz ps d Bc/Hz μs μs pulses Mbps Watts °C Applications - Ultrasound Imaging 1δ Output Jitter (@ 25 5MHz) Output Phase Noise (@ - 116 5MHz, 1k Hz offset) Delay resolution Delay range Max. pattern length Serial interface speed Total Power Operating Temp. 1/1280 102.4 64 2 0.063 0 to +70 Typical Application 8-Channel Transmit/Receive Chipset © 2010 National Semiconductor Corporation .national. .Data Sheet.in Block Diagram .national. .Data Sheet.in Connection Diagram FIGURE 1. Pin Diagram of LM96570 .national...