The AD8400 / AD8402 / AD8403 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SO-8 package. The AD8402 contains two independent variable resistors in saving SO-14 surface mount package. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC and TSSOP packages. Each part contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the controlling serial input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Each variable resistor offers a completely programmable value of resistance, between the A terminal and the wiper or the B terminal and the wiper. The fixed A to B terminal resistance of 1 kOhm, 10 kOhm, 50 kOhm or 100 kOhm has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs avoiding any make-before-break or break-before-make operation.Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an SPI compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic.APPLICATIONS Mechanical potentiometer replacement Programmable filters, delays, time constants Volume control, panning Line impedance matching Power supply adjustment

The AD8400/AD8402/AD8403 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SO-8 package. The AD8402 contains two independent variable resistors in saving SO-14 surface mount package. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC and TSSOP packages. Each part contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the controlling serial input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Each variable resistor offers a completely programmable value of resistance, between the A terminal and the wiper or the B terminal and the wiper. The fixed A to B terminal resistance of 1 kOhm, 10 kOhm, 50 kOhm or 100 kOhm has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs avoiding any make-before-break or break-before-make operation.Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an SPI compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic.

The AD8400/AD8402/AD8403 provide a single, dual or quad channel, 256 position digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SO-8 package. The AD8402 contains two independent variable resistors in saving SO-14 surface mount package. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC and TSSOP packages. Each part contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the controlling serial input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Each variable resistor offers a completely programmable value of resistance, between the A terminal and the wiper or the B terminal and the wiper. The fixed A to B terminal resistance of 1 kOhm, 10 kOhm, 50 kOhm or 100 kOhm has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs avoiding any make-before-break or break-before-make operation.Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an SPI compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Ten data bits make up the data word clocked into the serial input register. The data word is decoded where the first two bits determine the address of the VR latch to be loaded, the last eight bits are data. A serial data output pin at the opposite end of the serial register allows simple daisy-chaining in multiple VR applications without additional external decoding logic.

The AD8500 is a low power, precision CMOS op amp featuring a maximum supply current of 1 μA. The AD8500 has a maximum offset voltage of 1 mV and a typical input bias current of 1 pA, and it operates rail-to-rail on both the input and output. The AD8500 can operate from a single-supply voltage of +1.8 V to +5.5 V or a dual-supply voltage of ±0.9 V to ±2.75 V.With its low power consumption, low input bias current, and rail-to-rail input and output, the AD8500 is ideally suited for a variety of battery-powered portable applications. Potential applications include ECGs, pulse monitors, glucose meters, smoke and fire detectors, vibration monitors, and backup battery sensors.The ability to swing rail-to-rail at both the input and output helps maximize dynamic range and signal-to-noise ratio in systems that operate at very low voltages. The low offset voltage allows the AD8500 to be used in systems with high gain without having excessively large output offset errors, and it provides high accuracy without the need for system calibration.The AD8500 is fully specified over the industrial temperature range (−40°C to +85°C) and is operational over the extended industrial temperature range (−40°C to +125°C). It is available in a 5-lead, SC70 surface-mount package.ApplicationsPortable EquipmentRemote SensorsLow Power FiltersThreshold DetectorsCurrent Sensing

The AD8553 is a precision instrumentation amplifierfeaturing low noise, rail-to-rail output and a power-savingshutdown mode. The AD8553 also features low offset anddrift coupled with high common mode rejection. Inshutdown mode, the total supply current is reduced to lessthan 4 µA. Operation is fully specified from +1.8V to+5.5V.With low offset voltage of 20µV, offset voltage drift of0.1µV/°C and voltage noise of only 0.7µV p-p (0.01Hz to10 Hz), the AD8553 is ideal for applications where errorsources cannot be tolerated. Precision instrumentation,position and pressure sensors, medical instrumentation,and strain gauge amplifiers benefit from the low noise, lowinput bias current, and high common mode rejection. Thesmall footprint and low cost are ideal for high volumeapplications.The small package and low power consumption allowmaximum channel density or minimum board size forspace-critical equipment and portable systems.The AD8553 is specified over the industrial temperaturerange from -40°C to +85°C. The AD8553 is available inthe lead-free 10-lead MSOP.

The AD9540 is Analog Devices’ first dedicated clockingproduct specifically designed to support the extremely stringentclocking requirements of the highest performance dataconverters. The device features high performance PLL (phase-lockedloop) circuitry, including a flexible 200 MHz phasefrequency detector and a digitally controlled charge pumpcurrent. The device also provides a low jitter, 655 MHz CML-mode,PECL-compliant output driver with programmable slewrates. External VCO rates up to 2.7 GHz are supported.Extremely fine tuning resolution (steps less than 2.33 µHz) isanother feature supported by this device. Information is loadedinto the AD9540 via a serial I/O port that has a device writespeed of 25 Mbps. The AD9540 frequency divider block canalso be programmed to support a spread spectrum mode ofoperation.The AD9540 is specified to operate over the extendedautomotive range of −40°C to +85°C.Applications Clocking high performance data converters Base station clocking applications Network (SONET/SDH) clocking Gigabit Ethernet (GbE) clocking Instrumentation clocking circuits Agile LO frequency synthesis Automotive radar FM chirp source for radar and scanning systems Test and measurement equipment Acousto-optic device drivers

The AD9763/AD9765/AD9767 are dual-port, high speed, 2-channel, 10-/12-/14-bit CMOS DACs. Each part integratestwo high quality TxDAC+® cores, a voltage reference, and digital interface circuitry into a small 48-lead LQFP. The AD9763/AD9765/AD9767 offer exceptional ac and dc performancewhile supporting update rates of up to 125 MSPS.The AD9763/AD9765/AD9767 have been optimized forprocessing I and Q data in communications applications. Thedigital interface consists of two double-buffered latches as well as control logic. Separate write inputs allow data to be written to the two DAC ports independent of one another. Separate clocks control the update rate of the DACs.A mode control pin allows the AD9763/AD9765/AD9767 to interface to two separate data ports, or to a single interleavedhigh speed data port. In interleaving mode, the input datastream is demuxed into its original I and Q data and then latched. The I and Q data is then converted by the two DACsand updated at half the input data rate.The GAINCTRL pin allows two modes for setting the full-scale current (IOUTFS) of the two DACs. IOUTFS for each DAC can be set independently using two external resistors, or IOUTFS for both DACs can be set by using a single external resistor. See theGain Control Mode section for important date codeinformation on this feature.The DACs utilize a segmented current source architecturecombined with a proprietary switching technique to reduce glitch energy and maximize dynamic accuracy. Each DAC providesdifferential current output, thus supporting single-ended or differential applications. Both DACs of the AD9763, AD9765, or AD9767 can be simultaneously updated and can provide anominal full-scale current of 20 mA. The full-scale currentsbetween each DAC are matched to within 0.1%.The AD9763/AD9765/AD9767 are manufactured on anadvanced, low cost CMOS process. They operate from a singlesupply of 3.3 V to 5 V and consume 380 mW of power.Product HighlightsThe AD9763/AD9765/AD9767 are members of a pin-compatible family of dual TxDACs providing 8-, 10-, 12-, and 14-bit resolution.Dual 10-/12-/14-Bit, 125 MSPS DACs. A pair of high performance DACs for each part is optimized for low distortion performance and provides flexible transmission of I and Q information.Matching. Gain matching is typically 0.1% of full scale, and offset error is better than 0.02%.Low Power. Complete CMOS dual DAC function operates on 380 mW from a 3.3 V to 5 V single supply. The DAC full-scalecurrent can be reduced for lower power operation, and a sleepmode is provided for low power idle periods.On-Chip Voltage Reference. The AD9763/AD9765/AD9767each include a 1.20 V temperature-compensated band gapvoltage reference.Dual 10-/12-/14-Bit Inputs. The AD9763/AD9765/AD9767each feature a flexible dual-port interface, allowing dual orinterleaved input data.ApplicationsCommunicationsBase stationsDigital synthesisQuadrature modulation3D ultrasound

The AD9835 is a numerically-controlled oscillator employing a phase accumulator, a COS lookup table, and a 10-bit digital-to-analog converter integrated on a single CMOS chip. Modulation capabilities are provided for phase modulation and frequency modulation.Clock rates of up to 50 MHz are supported. Frequency accuracycan be controlled to one part in 4 billion. Modulation is effected by loading registers through the serial interface. A power-down bit allows the user to power down the AD9835 when it is not in use, the power consumption reduces to 1.75 mW.The part is available in a 16-lead TSSOP package.APPLICATIONS Frequency stimulus/waveform generation Frequency phase tuning and modulation Low power RF/communications systems Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Test and medical equipment

The AD9860 / AD9862 are versatile integrated mixed signal front ends that are optimized for broadband wireless applications. The AD9860 / AD9862 are cost effective high performance mixed signal solutions for standards based or proprietary fixed access, modem, or wireless networking applications where dynamic performance, power dissipation, cost, and size are critical attributes.The AD9860 / AD9862 receive path includes dual high-performance, 10-/12-bit, 64 MSPS analog to digital converters, with input buffers, programmable gain amplifiers, and decimation filters. The transmit path contains dual high-performance 12-/14-bit 128 MSPS digital-to-analog converters, programmable gain amplifiers, interpolation filters, a digital Hilbert filter, and digital mixers for complex or real signal up-conversion.APPLICATIONS Broadband wireless...MMDS, IEEE 802.16 Wireless LAN...IEEE 802.11 Wideband cellular...Wideband CDMA, 3G, 4G cellular Broadband modems...Residential gateways, Power-line networking

The AD8605, AD8606, and AD8608 are single, dual, and quad rail-to-rail input and output, single-supply amplifiers. They feature very low offset voltage, low input voltage and current noise, and wide signal bandwidth. They use the Analog Devices, Inc. patented DigiTrim® trimming technique, which achieves superior precision without laser trimming.The combination of low offsets, low noise, very low input bias currents, and high speed makes these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from the combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion. Applications for these amplifiers include optical control loops, portable and loop-powered instrumentation, and audio amplification for portable devices.The AD8605, AD8606, and AD8608 are specified over the extended industrial temperature range (−40°C to +125°C). The AD8605 single is available in 5-lead SOT-23 and 5-ball WLCSP packages. The AD8606 dual is available in an 8-lead MSOP, an 8-ball WLSCP, and a narrow SOIC surface-mounted package. The AD8608 quad is available in a 14-lead TSSOP package and a narrow 14-lead SOIC package. The 5-ball and 8-ball WLCSP offer the smallest available footprint for any surface-mounted operational amplifier. The WLCSP, SOT-23, MSOP, and TSSOP versions are available in tape-and-reel only.Applications Photodiode amplification Battery-powered instrumentation Multipole filters Sensors Barcode scanners Audio