The AD7763 high performance, 24-bit, ?-? analog-to-digitalconverter (ADC) combines wide input bandwidth and high speed with the benefits of ?-? conversion, as well as performanceof 107 dB SNR at 625 kSPS, making it ideal for high speed dataacquisition. A wide dynamic range, combined with significantly reduced antialiasing requirements, simplifies the design process. An integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting, an overrange flag, internal gain and offset registers, and a low-pass, digital FIR filter make the AD7763 a compact, highly integrated data acquisition device requiring minimal peripheral componentselection. In addition, the device offers programmable decimation rates and a digital FIR filter, which can be user-programmed to ensure that its characteristics are tailored for the user?s application. The AD7763 is ideal for applications demanding high SNR without necessitating the design of complex, front-end signal processing.The differential input is sampled at up to 40 MSPS by an analogmodulator. The modulator output is processed by a series of low-pass filters, the final filter having default or user-programmable coefficients. The sample rate, filter corner frequencies, and output word rate are set by a combination of the external clock frequency and the configuration registers of the AD7763.The reference voltage supplied to the AD7763 determines theanalog input range. With a 4 V reference, the analog input range is ?3.2 V differential-biased around a common mode of 2 V. This common-mode biasing can be achieved using the on-chip differential amplifiers, further reducing the external signal conditioning requirements.The AD7763 is available in an exposed paddle, 64-lead TQFP_EPand is specified over the industrial temperature range from ?40?C to +85?C.APPLICATIONS Data acquisition systems Vibration analysis Instrumentation

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The AD7734 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 500 ?s (2 kHz channel switching), making it ideally suitable for high resolution multiplexing applications.The device can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz.The analog front end features four single-ended input channels with unipolar or true bipolar input ranges to ?10 V while operating from a single +5 V analog supply. The device has an overrange and underrange detection capability and accepts an analog input overvoltage to ?16.5 V without degrading the performance of the adjacent channels.The differential reference input features ?No-Reference? detect capability. The ADC also supports per channel system calibration options. The digital serial interface can be configured for 3-wire operation and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered.The device is specified for operation over the extended industrial temperature range of ?40?C to +105?C.Other devices in the AD7734 family are the AD7732?and the AD7738.The AD7732 is similar to AD7734, but its analog front end features two fully differential input channels.The AD7738 analog front end is configurable for four fully differential or eight single-ended input channels, features 0.625 V to 2.5 V bipolar/unipolar input ranges, and accepts a common-mode input voltage from 200 mV to AVDD?300 mV. The AD7738 multiplexer output is pinned out externally, allowing the user to implement programmable gain or signal conditioning before being applied to the ADC.APPLICATIONS PLCs/DCS Multiplexing applications Process control Industrial instrumentation

The AD9837 is a low power, programmable waveform generatorcapable of producing sine, triangular, and square wave outputs.Waveform generation is required in various types of sensing,actuation, and time domain reflectometry (TDR) applications. The outputfrequency and phase are software programmable, allowing easytuning. The frequency registers are 28 bits: with a 16 MHz clock rate, resolution of 0.06 Hz can be achieved; with a 5 MHz clock rate, the AD9837can be tuned to 0.02 Hz resolution.The AD9837 is written to via a 3-wire serial interface. This serialinterface operates at clock rates up to 40 MHz and is compatiblewith DSP and microcontroller standards. The device operateswith a power supply from 2.3 V to 5.5 V.The AD9837 has a power-down (SLEEP) function. Sections of the device that are not being used can be powered down to minimize the current consumption of the part. For example, the DAC can be powered down when a clock output is being generated.The AD9837 is available in a 10-lead LFCSP_WD package.APPLICATIONS Frequency stimulus/waveform generation Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Line loss/attenuation Test and medical equipment Sweep/clock generators Time domain reflectometry (TDR) applications

Digital to Analog Converters - DAC CMOS CONVERTER IC

The AD7766/AD7766-1/AD7766-2 are high performance,24-bit, oversampled SAR analog-to-digital converters (ADCs).The AD7766/AD7766-1/AD7766-2 combine the benefits of alarge dynamic range and input bandwidth, consuming 15 mW,10.5 mW, and 8.5 mW power, respectively, and are contained ina 16-lead TSSOP package.Ideal for ultralow power data acquisition (such as PCI- and USBbasedsystems), the AD7766/AD7766-1/AD7766-2 provide 24-bitresolution. The combination of exceptional SNR, wide dynamicrange, and outstanding dc accuracy make the AD7766/AD7766-1/AD7766-2 ideally suited for measuring small signal changes over awide dynamic range. This is particularly suitable for applicationswhere small changes on the input are measured on larger ac ordc signals. In such an application, the AD7766/AD7766-1/AD7766-2 accurately gather both ac and dc information.The AD7766/AD7766-1/AD7766-2 include an on-board digitalfilter (complete with linear phase response) that acts to eliminateout-of-band noise by filtering the oversampled input voltage.The oversampled architecture also reduces front-end antialiasrequirements. Other features of the AD7766/AD7766-1/AD7766-2include a SYNC/PD (synchronization/power-down) pin, allowingthe synchronization of multiple AD7766/AD7766-1/AD7766-2devices. The addition of an SDI pin provides the option of daisychaining multiple AD7766/AD7766-1/AD7766-2 devices.The AD7766/AD7766-1/AD7766-2 operate from a 2.5 V supplyusing a 5 V reference. The devices operate from ?40?C to +105?C. Applications Low power PCI/USB data acquisition systems Low power wireless acquisition systems Vibration analysis Instrumentation High precision medical acquisition

The AD7708 / AD7718?are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit sigma delta ADC with PGA and can be configured as 4/5 fully-differential input channels or 8/10 pseudo-differential input channels. Two pins on the device are configurable as analog inputs or reference inputs. The AD7708 is a 16-bit version of the AD7718. Inputs signal ranges from 20mV to 2.56V can be directly converted using these ADCs. Signals can be converted directly from a transducer without the need for signal conditioning.The device operates from a 32 kHz crystal with an on-board PLL generating the required internal operating frequency. The output data rate from the part is software programmable. The peak-to-peak resolution from the part varies with the programmed gain and output data ratThe part operates from a single 3 V or 5 V supply. When operating from 3 V supplies, the power dissipation for the part is 3.84 mW typ. Both parts are pin-for-pin compatible allowing an upgradable path from 16 to 24 bits without the need for hardware modifications. The AD7708 / AD7718 are housed in 28-lead SOIC and TSSOP packagesAPPLICATIONS Industrial Process Control Instrumentation Pressure Transducers Portable Instrumentation Smart Transmitters

The SSM2380 is a fully integrated, high efficiency, stereo, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 2 W of continuous output power with 100 dB.Spread-spectrum pulse density modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures. An added benefit of spread-spectrum ?-? modu-lation is that no synchronization (SYNC) is needed when using multiple Class-D amplifiers. For applications that require long speaker cables (>10 cm), the SSM2380 includes a user-selectable ultralow EMI emissions mode that eliminates the need for EMI filters at the Class-D outputs.The SSM2380 has a micropower shutdown mode with a typicalshutdown current of 20 nA. Shutdown is enabled by applying alogic low to the SD pin or through an optional independent channel soft shutdown via I2C.The device also includes pop-and-click suppression circuitry. Thissuppression circuitry minimizes voltage glitches at the outputduring turn-on and turn-off, reducing audible noise on activationand deactivation.The fully differential inputs of the SSM2380 provides excellentrejection of common-mode noise on the input. Input couplingcapacitors can be omitted if the dc input common-mode voltage isapproximately VDD/2.The SSM2380 is specified over the commercial temperature range(?40?C to +85?C). It has built-in thermal shutdown and outputshort-circuit protection. It is available in a 16-ball, 2 mm ? 2 mmwafer level chip scale package (WLCSP).Applications Mobile phones MP3 players Portable electronics

NEWER ALTERNATIVES: AD5764R Quad, 16-Bit, 1LSB INL, Bipolar Voltage Output DAC with Internal Reference AD5754R Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DAC with Internal Reference AD5754 Complete, Quad, 16-Bit, Unipolar/Bipolar Voltage Output DACThe AD5764 is a quad, 16-bit, serial input, bipolar voltage output DAC that operates from supply voltages of ?11.4 V to ?16.5 V. Nominal full-scale output range is ?10 V. The AD5764 provides integrated output amplifiers, reference buffers, and proprietary power-up/power-down control circuitry. The part also features a digital I/O port that is programmed via the serial interface. The part incorporates digital offset and gain adjust registers per channel.The AD5764 is a high performance converter that offers guaranteed monotonicity, integral nonlinearity (INL) of ?1 LSB, low noise, and 10 ?s settling time. During power-up (when the supply voltages are changing), VOUTx is clamped to 0 V via a low impedance path.The AD5764 uses a serial interface that operates at clock rates of up to 30 MHz and is compatible with DSP and microcontroller interface standards. Double buffering allows the simultaneous updating of all DACs. The input coding is programmable to either twos complement or offset binary formats. The asynchronous clear function clears the data register to either bipolar zero or zero scale depending on the coding used. The AD5764 is ideal for both closed-loop servo control and open-loop control applications. The AD5764 is available in a 32-lead TQFP, and offers guaranteed specifications over the ?40?C to +85?C industrial temperature range. See Figure 1 for the functional block diagram.APPLICATIONS Industrial automation Open-loop/closed-loop servo control Process control Data acquisition systems Automatic test equipment Automotive test and measurement High accuracy instrumentation

The AD5755-1 is a quad, voltage and current output digital-to-analog converter (DAC) that operates with a power supply range from ?26.4 V to +33 V. On-chip dynamic power control minimizes package power dissipation in current mode. This is achieved by regulating the voltage on the output driver from 7.4 V to 29.5 V using a dc-to-dc boost converter optimized for minimum on-chip power dissipation. Each channel has a corresponding CHART pin so that HART signals can be coupled onto the current output of the AD5755-1.The device uses a versatile 3-wire serial interface that operates at clock rates of up to 30 MHz and is compatible with standard SPI, QSPI?, MICROWIRE?, DSP, and microcontroller interface standards. The interface also features optional CRC-8 packet error checking, as well as a watchdog timer that monitors activity on the interface.PRODUCT HIGHLIGHTS Dynamic power control for thermal management. 16-bit performance. Multichannel. HART compliant.?APPLICATIONS Process control Actuator control Programmable logic controllers (PLCs) HART network connectivity