The AD9761 is a complete dual channel, high speed, 10-bitCMOS DAC. The AD9761 has been developed specifically foruse in wide bandwidth communication applications (e.g., spreadspectrum) where digital I and Q information is being processedduring transmit operations. It integrates two 10-bit, 40 MSPSDACs, dual 2x interpolation filters, a voltage reference, anddigital input interface circuitry. The AD9761 supports a20 MSPS per channel input data rate that is then interpolatedby 2x up to 40 MSPS before simultaneously updating eachDAC.The interleaved I and Q input data stream is presented to thedigital interface circuitry, which consists of I and Q latches as wellas some additional control logic. The data is de-interleaved backinto its original I and Q data. An on-chip state machine ensures theproper pairing of I and Q data. The data output from each latch isthen processed by a 2x digital interpolation filter that eases thereconstruction filter requirements. The interpolated output of eachfilter serves as the input of their respective 10-bit DAC.The DACs utilize a segmented current source architecture combinedwith a proprietary switching technique to reduce glitchenergy and to maximize dynamic accuracy. Each DAC providesdifferential current output thus supporting single-ended ordifferential applications. Both DACs are simultaneously updatedand provide a nominal full-scale current of 10 mA. Also,the full-scale currents between each DAC are matched to within0.07 dB (i.e., 0.75%), thus eliminating the need for additionalgain calibration circuitry.The AD9761 is manufactured on an advanced low cost CMOSprocess. It operates from a single supply of 2.7 V to 5.5 V andconsumes 200 mW of power. To make the AD9761 complete italso offers an internal 1.20 V temperature-compensated bandgapreference.PRODUCT HIGHLIGHTS Dual 10-Bit, 40 MSPS DACs A pair of high performance 40 MSPS DACs optimized for low distortion performance provide for flexible transmission of I and Q information. 2x Digital Interpolation Filters Dual matching FIR interpolation filters with 62.5 dB stopband rejection precede each DAC input, thus reducing the DACs? reconstruction filter requirements. Low Power Complete CMOS dual DAC function operates on a low 200 mW on a single supply from 3 V to 5.5 V. The DAC full-scale current can be reduced for lower power operation, and a sleep mode is provided for power reduction during idle periods. On-Chip Voltage Reference The AD9761 includes a 1.20 V temperature-compensated band gap voltage reference. Single 10-Bit Digital Input Bus The AD9761 features a flexible digital interface that allows each DAC to be addressed in a variety of ways including different update rates. Small Package The AD9761 offers the complete integrated function in a compact 28-lead SSOP package. Product Family The AD9761 Dual Transmit DAC has a pair of Dual Receive ADC companion products, the AD9281 (8 bits) and AD9201 (10 bits).

The LTC6655 is a complete family of precision bandgap voltage references, offering exceptional noise and drift performance. This low noise and drift is ideally suited for the high resolution measurements required by instrumentation and test equipment. In addition, the LTC6655 is fully specified over the temperature range of ?40?C to 125?C, ensuring its suitability for demanding automotive and industrial applications. Advanced curvature compensation allows this bandgap reference to achieve a drift of less than 2ppm/?C with a predictable temperature characteristic and an output voltage accurate to ?0.025%, reducing or eliminating the need for calibration.The LTC6655LN Low Noise comes with a noise reduction pin that enables reduction of wideband noise with the addition of a single capacitor.The LTC6655 can be powered from as little as 500mV above the output voltage to as much as 13.2V. Superior load regulation with source and sink capability, coupled with exceptional line rejection, ensures consistent performance over a wide range of operating conditions. A shutdown mode is provided for low power applications.The LTC6655 references are offered in an 8-lead MSOP package and an 8-lead LS8 package. The LS8 is a 5mm ? 5mm surface mount hermetic package that provides outstanding stability.APPLICATIONS Instrumentation and Test Equipment High Resolution Data Acquisition Systems Weigh Scales Precision Battery Monitors Precision Regulators Medical Equipment

The ADA4851-1 (single), ADA4851-2 (dual), and ADA4851-4 (quad) are low cost, high speed, voltage feedback rail-to-rail output op amps. Despite their low price, these parts provide excellent overall performance and versatility. The 130 MHz, ?3 dB bandwidth and high slew rate make these amplifiers well suited for many general-purpose, high speed applications.The ADA4851 family is designed to operate at supply voltages as low as +3 V and up to ?5 V. These parts provide true single-supply capability, allowing input signals to extend 200 mV below the negative rail and to within 2.2 V of the positive rail. On the output, the amplifiers can swing within 60 mV of either supply rail.With their combination of low price, excellent differential gain (0.08%), differential phase (0.09?), and 0.1 dB flatness out to 11 MHz, these amplifiers are ideal for consumer video applications.The ADA4851 family is designed to work over the extended temperature range (?40?C to +125?C). The ADA4851-4W and ADA4851-2W are automotive grade versions, qualified for ?40?C to +125?C operation per AEC-Q100. See the Automotive Products section for more details.Applications Automotive infotainment systems Automotive driver assistance systems Consumer video Professional video Video switchers Active filters Clock buffers

The ADM2582E/ADM2587E are fully integrated signal and power isolated data transceivers with ?15 kV ESD protection and are suitable for high speed communication on multipoint transmission lines. The ADM2582E/ADM2587E include anintegrated isolated dc-to-dc power supply, which eliminates the need for an external dc-to-dc isolation block.They are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).The devices integrate Analog Devices, Inc., iCoupler? technology to combine a 3-channel isolator, a three-state differential line driver, a differential input receiver, and Analog Devices isoPower dc-to-dc converter into a single package. The devices are powered by a single 5 V or 3.3 V supply, realizing a fully integrated signal and power isolated RS-485 solution.The ADM2582E/ADM2587E driver has an active high enable. An active low receiver enable is also provided, which causes the receiver output to enter a high impedance state when disabled.The devices have current limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The parts are fully specified over the industrial temperature range and are available in a highly integrated, 20-lead, wide-body SOIC package.The ADM2582E/ADM2587E contain isoPower technology that uses high frequency switching elements to transfer power throughthe transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to theAN-0971 Application Note, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations.Applications Isolated RS-485/RS-422 interfaces Industrial field networks Multipoint data transmission systems

The ADATE320 is a complete, single-chip ATE solution that performs the pin electronics functions of a driver, comparator, and active load (DCL), and a four quadrant per pin parametric measurement unit (PPMU). Dedicated 16-bit digital-to-analog converters (DACs) with on-chip calibration registers provide all the necessary dc levels for operation of the device.The driver features three active modes: high, low, and terminate, as well as a high impedance inhibit state. The inhibit state, in conjunction with the integrated dynamic clamps, facilitates significant attenuation of transmission line reflections when the driver is not actively terminating the line. The open-circuit drive capability is ?1.5 V to +4.5 V to accommodate a standard range of ATE and instrumentation applications.The ADATE320 can be used as a dual, single-ended pin electronics channel or as a single differential channel. In addition to per channel high speed window comparators, the ADATE320 provides a programmable threshold differential comparator for differential ATE applications.All dc levels for DCL and PPMU functions are generated by dedicated, on-chip, 16-bit DACs. To facilitate the programming of accurate levels, the ADATE320 includes an integrated calibration function to correct for the gain and offset errors of each functional block. Correction coefficients can be stored on chip, and any values written to the DACs adjust automatically using the appropriate correction factors.The ADATE320 uses a serial programmable interface (SPI) bus to program all functional blocks, DACs, and on-chip calibration constants. It also has an on-chip temperature sensor and overvolt-age/undervoltage fault clamps that monitor and report the device temperature and any output pin or transient PPMU voltage faults that may occur during operation.The ADATE320 is available in two options. The standard option has high speed comparator outputs with 250 mV output swing. The ADATE320-1 has 400 mV output swing. See the Ordering Guide for more information.APPLICATIONSAutomatic test equipment (ATE)Semiconductor/board test systemsInstrumentation and characterization equipment

DC746A: Demo Board for the LTC2412 2-Channel Differential Input 24-Bit No Latency Delta Sigma ADC.

Demonstration circuit 894A-A is a 36V-72VIN, synchronous flyback converter featuring the LT3825. This circuit was designed specifically to attain a high current, low ripple, synchronously rectified flyback to efficiently power 3.3V loads at up to 12A from a typical telecom input voltage range. This circuit features synchronous rectifier drive outputs, output voltage regulation without the need of an optocoupler, a self-starting architecture and input undervoltage lockout.

Demonstration circuit 542 is a dual output, dual phase synchronous step-down controller, featuring the LTC3728EG. Output #1 can be configured for either 5.0V or 3.3V and output #2 can be configured for either 3.3V or 2.5V. The maximum load for both rails is 12A. The input voltage range of the DC542 is 8V to 24V. The DC542 also contains a footprint for a 5.5V boost converter bias supply whose output is connected to EXTVCC. See the “Optional Bias Supply” section for more details.

The ADF4252 is a dual fractional-N/integer-N frequencysynthesizer that can be used to implement local oscillators (LO)in the upconversion and downconversion sections of wirelessreceivers and transmitters. Both the RF and IF synthesizersconsist of a low noise digital phase frequency detector (PFD), aprecision charge pump, and a programmable reference divider.The RF synthesizer has a ?-?-based fractional interpolator thatallows programmable fractional-N division. The IF synthesizerhas programmable integer-N counters. A complete phase-lockedloop (PLL) can be implemented if the synthesizer is used withan external loop filter and voltage controlled oscillator (VCO).Control of all the on-chip registers is via a simple 3-wire interface.The device operates with a power supply ranging from 2.7 V to3.3 V and can be powered down when not in use.Applications Base stations for mobile radio (GSM, PCS, DCS, CDMA, WCDMA) Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA) Wireless LANs Communications test equipment CATV equipment

The ADuC7124/ADuC7126 is a fully integrated, 1 MSPS, 12-bit data acquisition systems incorporating high performance multichannel ADCs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip.The ADC consists of up to 12 single-ended inputs. An additional four inputs are available but are multiplexed with the four DAC output pins. The ADC can operate in single-ended or differential input modes. The ADC input voltage is 0 V to VREF. A low drift band gap reference, temperature sensor, and voltage comparator complete the ADC peripheral set. The DAC output range is programmable to one of three voltage ranges. The DAC outputs have an enhanced feature of being able to retain their output voltage during a watchdog or software reset sequence.The devices operate from an on-chip oscillator and a PLL generating an internal high frequency clock of 41.78 MHz. This clock is routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an ARM7TDMI?, 16-bit/32-bit RISC machine, which offers up to 41 MIPS peak performance. Thirty-two kilobytes of SRAM and 126 kB of nonvolatile Flash/EE memory are provided on-chip. The ARM7TDMI core views all memory and registers as a single linear array.The ADuC7124 contains an advanced interrupt controller. The vectored interrupt controller (VIC) allows every interrupt to be assigned a priority level. It also supports nested interrupts to a maximum level of eight per IRQ and FIQ. When IRQ and FIQ interrupt sources are combined, a total of 16 nested interrupt levels are supported.On-chip factory firmware supports in-circuit download via the UART serial interface port or the I2C port, while nonintrusive emulation is also supported via the JTAG interface. These features are incorporated into a low cost QuickStart? Development System supporting this MicroConverter? family. The part contains a 16-bit PWM with six output signals. For communication purposes, the part contains 2?I2C channels that can be individually configured for Master or Slave mode. An SPI interface supporting both master and slave modes is also provided. Thirdly, 2?UART channels are provided. Each UART contains a configurable 16-bit FIFO with the receive and transmit buffers.The parts operate from 2.7 V to 3.6 V and are specified over an industrial temperature range of ?40?C to +125?C. When operating at 41.78 MHz, the power dissipation is typically 120 mW. The ADuC7124 is available in either 64-lead LFCSP or 80-lead LFQFP packages.APPLICATIONS Industrial control and automation systems Smart sensors, precision instrumentation Base station systems, optical networking Patient monitoring