The AD9789 is a flexible QAM encoder/interpolator/upconverter combined with a high performance, 2400 MSPS, 14-bit RF digital-to-analog converter (DAC). The flexible digital interface can accept up to four channels of complex data. The QAM encoder supports constellation sizes of 16, 32, 64, 128, and 256 with SRRC filter coefficients for all standards.The on-chip rate converter supports a wide range of baud rates with a fixed DAC clock. The digital upconverter can place the channels from 0 to 0.5 × fDAC. This permits four contiguous channels to be synthesized and placed anywhere from dc to fDAC.The AD9789 includes a serial peripheral interface (SPI) for device configuration and status register readback. The flexible digital interface can be configured for data bus widths of 4, 8, 16, and 32 bits. It can accept real or complex data.The AD9789 operates from 1.5 V, 1.8 V, and 3.3 V supplies for a total power consumption of 1.6 W. It is supplied in a 164-ball chip scale package ball grid array for lower thermal impedance and reduced package parasitics. No special power sequencing is required. The clock receiver powers up muted to prevent start-up noise.Product Highlights Highly integrated and configurable QAM mappers, interpolators, and upconverters for direct synthesis of one to four DOCSIS- or DVB-C-compatible channels in a block. Low noise and intermodulation distortion (IMD) performance enable high quality synthesis of signals up to 1 GHz. Flexible data interface supports LVDS for improved SFDR or CMOS input data for less demanding applications. Interface is configurable from 4-bit nibbles to 32-bit words and can run at up to 150 MHz CMOS or 150 MHz LVDS double data rate (DDR). Manufactured on a CMOS process, the AD9789 uses a proprietary switching technique that enhances dynamic performance.Applications Broadband communications systems CMTS/DVB Cellular infrastructure Point-to-point wireless

The ADAS1000 measures electrocardiac (ECG) signals, thoracic impedance, pacing artifacts,and lead-on/lead-off status and output this information in theform of a data frame supplying either lead/vector or electrodedata at programmable data rates. Its low power and small sizemake it suitable for portable, battery-powered applications.The high performance also makes it suitable for higher enddiagnostic machines. The ADAS1000 is a full-featured, 5-channel ECG includingrespiration and pace detection, while the ADAS1000-1 offersonly ECG channels with no respiration or pace features. Similarly,the ADAS1000-2 is a subset of the main device and is configuredfor gang purposes with only the ECG channels enabled (norespiration, pace, or right leg drive).The ADAS1000/ADAS1000-1/ADAS1000-2 are designed tosimplify the task of acquiring and ensuring quality ECG signals.They provide a low power, small data acquisition system forbiopotential applications. Auxiliary features that aid in betterquality ECG signal acquisition include multichannel averageddriven lead, selectable reference drive, fast overload recovery,flexible respiration circuitry returning magnitude and phaseinformation, internal pace detection algorithm operating onthree leads, and the option of ac or dc lead-off detection. Severaldigital output options ensure flexibility when monitoring andanalyzing signals. Value-added cardiac post processing isexecuted externally on a DSP, microprocessor, or FPGA.Because ECG systems span different applications, theADAS1000/ADAS1000-1/ADAS1000-2 feature a power/noisescaling architecture where the noise can be reduced at theexpense of increasing power consumption. Signal acquisitionchannels can be shut down to save power. Data rates can bereduced to save power.To ease manufacturing tests and development as well as offerholistic power-up testing, the ADAS1000/ADAS1000-1/ADAS1000-2 offer a suite of features, such as dc and ac testexcitation via the calibration DAC and cyclic redundancy check(CRC) redundancy testing, in addition to readback of allrelevant register address space.The input structure is a differential amplifier input, therebyallowing users a variety of configuration options to best suittheir application.The ADAS1000/ADAS1000-1/ADAS1000-2 are available in twopackage options, a 56-lead LFCSP package and a 64-lead LQFPpackage. Both packages are specified over a −40°C to +85°Ctemperature range. APPLICATIONSECG: Monitor & Diagnostic Bedside Patient Monitoring Portable Telemetry Holter AED Cardiac Defibrillators Ambulatory Monitors Pace Maker Programmer Patient Transport Stress testing

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