The ADM1168 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.The device also provides up to eight programmable inputs for monitoring undervoltage faults, overvoltage faults, or out-of-window faults on up to eight supplies. In addition, eight programmable outputs can be used as logic enables. Six of these programmable outputs can also provide up to a 12 V output for driving the gate of an NFET that can be placed in the path of a supply.The logical core of the device is a sequencing engine. This state machine-based construction provides up to 63 different states. This design enables very flexible sequencing of the outputs based on the condition of the inputs.A block of nonvolatile EEPROM is available that can be used to store user-defined information and may also be used to hold a number of fault records that are written by the sequencing engine defined by the user when a particular fault or sequence occurs.The ADM1168 is controlled via configuration data that can be programmed into an EEPROM. The whole configuration can be programmed using an intuitive GUI-based software package provided by Analog Devices, Inc.For more information about the ADM1168 register map, refer to the AN-721 Application Note.APPLICATIONS Central office systems Servers/routers Multivoltage system line cards DSP/FPGA supply sequencing In-circuit testing of margined supplies

The SSM2375 is a fully integrated, high efficiency, Class-D audioamplifier. It is designed to maximize performance for mobilephone applications. The application circuit requires a minimumof external components and operates from a single 2.5 V to 5.5 Vsupply. It is capable of delivering 3 W of continuous output powerwith 100 dB.Spread-spectrum pulse density modulation (PDM) is used toprovide lower EMI-radiated emissions compared with otherClass-D architectures. The inherent randomized nature ofspread-spectrum PDM eliminates the clock intermodulation(beating effect) of several amplifiers in close proximity.The SSM2375 includes an optional modulation select pin(ultralow EMI emissions mode) that significantly reduces theradiated emissions at the Class-D outputs, particularly above100 MHz. In ultralow EMI emissions mode, the SSM2375can pass FCC Class B radiated emission testing with 50 cm,unshielded speaker cable without any external filtering.The device also includes a highly flexible gain select pin thatallows the user to select a gain of 0 dB, 3 dB, 6 dB, 9 dB, or12 dB. The gain selection feature improves gain matchingbetween multiple SSM2375 devices within a single applicationas compared to using external resistors to set the gain.The SSM2375 has a micropower shutdown mode with a typicalshutdown current of 20 nA. Shutdown is enabled by applyinga logic low to the SD pin.The device also includes pop-and-click suppression circuitry.This suppression circuitry minimizes voltage glitches at theoutput during turn-on and turn-off, reducing audible noiseon activation and deactivation.Other features that simplify system-level integration of theSSM2375 include input low-pass filtering to suppress out-of-bandDAC noise interference to the PDM modulator and fixed-inputimpedance to simplify component selection across multipleplatform production builds.The SSM2375 is specified over the industrial temperature rangeof −40°C to +85°C. It has built-in thermal shutdown and outputshort-circuit protection. It is available in a halide-free, 9-ball,1.5 mm × 1.5 mm wafer level chip scale package (WLCSP).Applications Mobile phones MP3 players Portable electronics

The AD9785/AD9787/AD9788 are 12-bit, 14-bit, and 16-bit,high dynamic range TxDAC® devices, respectively, that providea sample rate of 800 MSPS, permitting multicarrier generationup to the Nyquist frequency. Features are included for optimizingdirect conversion transmit applications, including complexdigital modulation, as well as gain, phase, and offset compensation.The DAC outputs are optimized to interface seamlesslywith analog quadrature modulators, such as the ADL5375family from Analog Devices, Inc. A serial peripheral interface(SPI) provides for programming and readback of many internalparameters. Full-scale output current can be programmed overa range of 10 mA to 30 mA. The AD9785/AD9787/AD9788family is manufactured on a 0.18 μm CMOS process and operatesfrom 1.8 V and 3.3 V supplies. It is enclosed in a 100-lead TQFPpackage.Product Highlights Low noise and intermodulation distortion (IMD) enable high quality synthesis of wideband signals from baseband to high intermediate frequencies. Proprietary DAC output switching technique enhances dynamic performance. CMOS data input interface with adjustable setup and hold. Low power complex 32-bit numerically controlled oscillators (NCOs).Applications Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM Digital high or low IF synthesis Transmit diversity Wideband communications LMDS/MMDS, point-to-point

The ADA4091-2 dual and ADA4091-4 quad are micropower,single-supply, 1.2 MHz bandwidth amplifiers featuring rail-torailinputs and outputs. They are guaranteed to operate from a+3.0 V to +30 V single supply as well as from ±1.5 V to ±15 Vdual supplies.The ADA4091-2 / ADA4091-4 features a unique input stage thatallows the input voltage to exceed either supply safely without anyphase reversal or latch-up; this is called overvoltage protection(OVP).Applications for these amplifiers include portable telecommunicationsequipment, power supply control and protection,and interface for transducers with wide output ranges. Sensorsrequiring a rail-to-rail input amplifier include Hall effect, piezoelectric,and resistive transducers.The ability to swing rail-to-rail at both the input and output enablesdesigners, for example, to build multistage filters in single-supplysystems and to maintain high signal-to-noise ratios (SNR).The ADA4091-2 / ADA4091-4 is specified over the extended industrialtemperature range of −40°C to +125°C. The ADA4091-2 /ADA4091-4 is part of the growing selection of 36 V, low poweroperational amplifiers from Analog Devices, Inc.,The ADA4091-2 is available in 8-lead, plastic SOIC and 8-leadLFCSP packages. The ADA4091-4 is available in 14–lead TSSOPand 16-lead LFCSP surface-mount packages.Applications Industrial process control Battery-powered instrumentation Power supply control and protection Telecommunications Remote sensors Low voltage strain gage amplifiers DAC output amplifiers

The ADA4927 is a low noise, ultralow distortion, high speed, current feedback differential amplifier that is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode level can easily be matched to the required ADC input common-mode levels. The internal common-mode feedback loop provides exceptional output balance and suppression of even-order distortion products.Differential gain configurations are easily realized using an external feedback network comprising four resistors. The current feedback architecture provides loop gain that is nearly independent of closed-loop gain, achieving wide bandwidth, low distortion, and low noise at higher gains and lower power consumption than comparable voltage feedback amplifiers.The ADA4927 is fabricated using the Analog Devices, Inc., silicon-germanium complementary bipolar process, enabling very low levels of distortion with an input voltage noise of only 1.3 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4927 make it well suited for a wide variety of data acquisition and signal processing applications.The ADA4927-1 is available in a Pb-free, 3 mm × 3 mm 16-lead LFCSP, and the ADA4927-2 is available in a Pb-free, 4 mm × 4 mm 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board (PCB) layout and to minimize distortion. They are specified to operate over the −40°C to +105°C temperature range.Applications ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Differential line drivers

The ADG858 is a low voltage CMOS device containing foursingle-pole, double-throw (SPDT) switches. This device offersultralow on resistance of less than 0.82 Ω over the full temperaturerange. The ADG858 is fully specified for 4.2 V to 5.5 V and 2.7 Vto 3.6 V supply operation.Each switch conducts equally well in both directions when onand has an input signal range that extends to the supplies. TheADG858 exhibits break-before-make switching action.The ADG858 is available in a 2.1 mm × 2.1 mm, 16-lead miniLFCSP. This tiny package makes the device ideal for spaceconstrainedapplications, such as handsets, PDAs, and MP3s.Product Highlights <0.82 Ω over the full temperature range of −40°C to +85°C. Single 1.8 V to 5.5 V operation. Compatible with 1.8 V CMOS logic. High current handling capability (250 mA continuous current per channel). Low THD + N: 0.06% typical. 2.1 mm × 2.1 mm, 16-lead mini LFCSP.Applications Cellular phones PDAs MP3 players Power routing Battery-powered systems PCMCIA cards Modems Audio and video signal routing Communication systems

The ADM2482E/ADM2487E are isolated data transceivers with ±15 kV ESD protection and are suitable for high speed, half-duplex or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y is linked externally to Receiver Input Pin A, and Transmitter Output Pin Z to Receiver Input Pin B. The parts are designed for balanced transmission lines and comply with TIA/EIA- 485-A-98 and ISO 8482:1987(E).The devices employ the Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. An on-chip oscillator outputs a pair of square waveforms that drive an external transformer to provide isolated power. The logic side of the device can be powered with either a 5 V or a 3.3 V supply, and the bus side is powered with an isolated 3.3 V supply.The ADM2482E/ADM2487E driver has an active high enable, and the receiver has an active low enable. The driver output enters a high impedance state when the driver enable signal is low. The receiver output enters a high impedance state when the receiver enable signal is high.The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention might cause excessive power dissipation. The part is fully specified over the industrial temperature range of −40°C to +85°C and is available in a 16-lead, wide-body SOIC package.Applications Isolated RS-485/RS-422 interfaces Industrial field networks Multipoint data transmission systems

The ADN4600 is an asynchronous, nonblocking crosspoint switch with eight differential PECL-/CML-compatible inputs with programmable equalization and eight differential CML outputs with programmable output levels and pre-emphasis or de-emphasis. The operation of this device is optimized for NRZ data at rates up to 4.25 Gbps.The receive inputs provide programmable equalization with nine settings to compensate for up to 30 in. of FR4 and programmable pre-emphasis with seven settings to compensate for up to 30 in. of FR4 at 4.25 Gbps.The ADN4600 nonblocking switch core implements an 8 × 8 crossbar and supports independent channel switching through the I2C control interface. Every channel implements an asynchronous path supporting NRZ data rates from dc to 4.25 Gbps. Each channel is fully independent of other channels. The ADN4600 has low latency and very low channel-to-channel skew.The main application for the ADN4600 is to support switching on the backplane, line card, or cable interface sides of serial links.The ADN4600 is packaged in a 9 mm × 9 mm, 64-lead LFCSP package and operates from −40°C to +85°C.APPLICATIONS 1×, 2×, 4× FibreChannel XAUI Gigabit Ethernet over backplane 10GBase-CX4 InfiniBand® 50 Ω cables

The ADP2105 / ADP2106 / ADP2107 are low quiescent current,synchronous, step-down dc-to-dc converters in a compact 4 mm ×4 mm LFCSP package. At medium to high load currents, thesedevices use a current mode, constant frequency pulse-widthmodulation (PWM) control scheme for excellent stability andtransient response. To ensure the longest battery life in portableapplications, the ADP2105 / ADP2106 / ADP2107 use a pulsefrequency modulation (PFM) control scheme under light loadconditions that reduces switching frequency to save power.The ADP2105 / ADP2106 / ADP2107 run from input voltages of2.7 V to 5.5 V, allowing single Li+/Li− polymer cell, multiplealkaline/NiMH cells, PCMCIA, and other standard power sources.The output voltage of ADP2105 / ADP2106 / ADP2107 is adjustablefrom 0.8 V to the input voltage (indicated by ADJ), whereas theADP2105 / ADP2106 / ADP2107 are available in preset outputvoltage options of 3.3 V, 1.8 V, 1.5 V, and 1.2 V (indicated by x.x V).Each of these variations is available in three maximum currentlevels: 1 A (ADP2105), 1.5 A (ADP2106), and 2 A (ADP2107).The power switch and synchronous rectifier are integrated forminimal external part count and high efficiency. During logiccontrolled shutdown, the input is disconnected from the output,and it draws less than 0.1 µA from the input source. Other keyfeatures include undervoltage lockout to prevent deep batterydischarge and programmable soft start to limit inrush current atstartup.Applications Mobile handsets PDAs and palmtop computers Telecommunication/networking equipment Set top boxes Audio/video consumer electronics

The ADP2105 / ADP2106 / ADP2107 are low quiescent current,synchronous, step-down dc-to-dc converters in a compact 4 mm ×4 mm LFCSP package. At medium to high load currents, thesedevices use a current mode, constant frequency pulse-widthmodulation (PWM) control scheme for excellent stability andtransient response. To ensure the longest battery life in portableapplications, the ADP2105 / ADP2106 / ADP2107 use a pulsefrequency modulation (PFM) control scheme under light loadconditions that reduces switching frequency to save power.The ADP2105 / ADP2106 / ADP2107 run from input voltages of2.7 V to 5.5 V, allowing single Li+/Li− polymer cell, multiplealkaline/NiMH cells, PCMCIA, and other standard power sources.The output voltage of ADP2105 / ADP2106 / ADP2107 is adjustablefrom 0.8 V to the input voltage (indicated by ADJ), whereas theADP2105 / ADP2106 / ADP2107 are available in preset outputvoltage options of 3.3 V, 1.8 V, 1.5 V, and 1.2 V (indicated by x.x V).Each of these variations is available in three maximum currentlevels: 1 A (ADP2105), 1.5 A (ADP2106), and 2 A (ADP2107).The power switch and synchronous rectifier are integrated forminimal external part count and high efficiency. During logiccontrolled shutdown, the input is disconnected from the output,and it draws less than 0.1 µA from the input source. Other keyfeatures include undervoltage lockout to prevent deep batterydischarge and programmable soft start to limit inrush current atstartup.Applications Mobile handsets PDAs and palmtop computers Telecommunication/networking equipment Set top boxes Audio/video consumer electronics