LM96511 Datasheet | National Semiconductor

Description 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 to 50 Mega Samples Per Second (MSPS) analog-to-digital converter (ADC) with Instant Overload Recovery (IOR). The architecture of the DVGA is a digitally-controlled linear-in-d B step attenuator driving a fixed-gain post-amplifier (PA). The ADC uses a Continuous Time-Sigma-Delta (CTΣΔ) architecture with digital decimation filtering to maximize dynamic performance and provide an alias free input bandwidth to ADC CLK / 2. The ADC digital outputs are serialized and provided on differential LVDS outputs. The ADC includes an on-chip clock cleaner PLL. In addition, for baseband CW Doppler Beamformer applications, an 8-channel demodulator with 16 discrete phase rotation angles is included. Selective power reduction is included to minimize consumption of idle sections during interleaved imaging modes. An SPI™ patible serial interface allows dynamic digital programming and control. National Semiconductor offers a full development package for sale which includes acquisition analysis hardware and software with user friendly GUI for device programming and control. Key Specifications (Full path unless noted) B-Mode: Total Input Voltage Noise (RTI) Max AFE Gain Single-Ended Input Swing Programmable Maximum DVGA Attenuation Programmable Post Amp Gain Attenuator Step Resolution ADC Resolution Conversion Rate (ADC CLK) ADC Digital Filter stop band attenuation ADC Digital Filter Passband Ripple ADC Instant Overload Recovery Power Consumption (per channel) CW Doppler Mode: Phase Rotation Resolution Phase Noise (Per Channel, Offset = 5KHz) Dynamic Range Amplitude Quadrature Error (I to Q) Phase Quadrature Error (I to Q) Power Consumption (Per Channel) mon Specifications: LNA Input Voltage Noise Operating...