The AD8307is a complete500MHz monolithic demodulating logarithmic amplifier based on progressive compression technique,providing a dynamic range of92dB and88dB to a tight±1dB error bound at all frequencies up to100MHz.The output slope of AD8307is25mV/dB(intercept of-84dBm).The configuration,main performance and application in ultrasound echo receiving and anti-jamming of the AD8307are introduced in detail.