The ADP2108 is a high efficiency, low quiescent current step-down dc-to-dc converter manufactured in two different packages. The total solution requires only three tiny external components. It uses a proprietary, high speed current mode, constant frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2108 has a power save mode that reduces the switching frequency under light load conditions.The ADP2108 runs on input voltages of 2.3 V to 5.5 V, which allows for single lithium or lithium polymer cell, multiple alkaline or NiMH cell, PCMCIA, USB, and other standard power sources. The maximum load current of 600 mA is achievable across the input voltage range.The ADP2108 is available in fixed output voltages of 3.3 V, 3.0 V, 2.5 V, 2.3 V, 1.82 V, 1.8 V, 1.5 V, 1.3 V, 1.2 V, 1.1 V, and 1.0 V. All versions include an internal power switch and synchronous rectifier for minimal external part count and high efficiency. The ADP2108 has an internal soft start and is internally compensated. During logic controlled shutdown, the input is disconnected from the output and the ADP2108 draws less than 1 ?A from the input source.Other key features include undervoltage lockout to prevent deep battery discharge and soft start to prevent input current over-shoot at startup. The ADP2108 is available in 5-ball WLCSP and 5-lead TSOT packages. The ADP2109 provides the same features and operations as the ADP2108 and has the additional function of a discharge switch in the WLCSP package.APPLICATIONS PDAs and palmtop computers Wireless handsets Digital audio, portable media players Digital cameras, GPS navigation units

The AD5258 provides a compact, nonvolatile 3 mm ? 4.9 mm packaged solution for 64-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers?or variable resistors, but with enhanced resolution and solid-state reliability.The wiper settings are controllable through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM content in addition, resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. There is also a software write protection function that ensures data cannot be written to the EEPROM register.A separate VLOGIC pin delivers increased interface flexibility. For users who need multiple parts on one bus, Address Bit AD0 and Address Bit AD1 allow up to four devices on the same bus.APPLICATIONS LCD panel VCOM adjustment LCD panel brightness and contrast control Mechanical potentiometer replacement in new designs Programmable power supplies RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment Fiber to the home systems Electronics level settings

The ADL8104 is a gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), pseudomorphic high electron mobility transistor (pHEMT), low noise, wideband, high linearity amplifier that operates from 0.4 GHz to 7.5 GHz.The ADL8104 provides a typical gain of 15 dB at 0.6 GHz to 6 GHz, a 3.5 dB typical noise figure at 0.4 GHz to 6 GHz, a 20 dBm typical output power for 1 dB compression (OP1dB) at 0.6 GHz to 6 GHz, and a typical output third-order intercept (OIP3) of 32 dBm at 0.6 GHz to 6 GHz, requiring only 150 mA from a 5 V drain supply voltage. The low noise amplifier has a high output second-order intercept (OIP2) of 52 dBm typical at 0.6 GHz to 6 GHz, making the ADL8104 suitable for military and test instrumentation applications.The ADL8104 also features inputs and outputs that are internally matched to 50 ?. The RFIN and RFOUT pins are internally ac-coupled and the bias inductor is also integrated, making the ADL8104 ideal for surface-mounted technology (SMT)-based, high density applications.The ADL8104 is housed in an RoHS-compliant, 3 mm ? 3 mm, 16-lead LFCSP.APPLICATIONSTest instrumentationMilitary communications

TThe SSM3582A is a fully integrated, high efficiency, digital input stereo Class-D audio amplifier. The device can operate from a single supply and requires only a few external components, significantly reducing the circuit bill of materials.A proprietary, spread spectrum ?-? modulation scheme enables direct connection to the speaker and ensures state-of-the-art analog performance while lowering radiated emissions compared to other Class-D architectures. An optional ultralow electromagnetic interference (EMI) mode significantly reduces radiated emissions above 100 MHz, enabling longer speaker cable lengths. Audio is transmitted digitally to the amplifier, minimizing the possibility of signal corruption in digital environments. The amplifier provides outstanding analog performance, with a 106 dB signal-to-noise ratio and a low 0.004% total harmonic distortion + noise (THD + N).The SSM3582A operates from a single 4.5 V to 16.5 V supply and is capable of delivering 2? 15 W rms continuously into 8 ? and 4 ? loads at The pulse code modulation (PCM) audio serial port supports most common protocols, such as I2S, left justified, and time division multiplexing (TDM), and can address up to 16 devices on a single interface, for up to 32 audio playback channels.IC operation is controlled through a dedicated I2C interface. The two ADDRx pins (2?, five-level) define up to 16 individual addresses in I2C and standalone modes and automatically set the default TDM slots attribution.A micropower shutdown mode is triggered by removing the digital audio interface clock, with a typical current of An automatic power-down feature shuts down the amplifier and the digital-to-analog converter (DAC) when no signal is present at the input, minimizing power consumption during digital silence. The device restarts when nonzero data is present at the input. Mute and unmute transitions are pop and click free.The SSM3582A is specified over the commercial temperature range of ?40?C to +85?C. The device has built in thermal shutdown and output short-circuit protection, as well as an early thermal warning with programmable gain limiting to maintain operation.The SSM3582A is available in a 40-lead, 6 mm ? 6 mm lead frame chip scale package (LFCSP), with a thermal pad to improve heat dissipation.Applications Mobile computing All in one computers Portable electronics Wireless speakers Televisions

The HMC345ALP3E is a broadband non-reflective GaAs MESFET SP4T switch in a low cost leadless surface mount packages. Covering DC to 8 GHz, this switch offers high isolation and low insertion loss. This switch also includes an on board binary decoder circuit which reduces the required logic control lines to two. The switch operates using a positive control voltage of 0/+5V, and requires a fixed bias of +5V.* Blocking capacitors are required at ports RFC and RF1, 2, 3, & 4. Their value will determine the lowest transmission frequency.APPLICATIONSThis switch is suitable for usage in DC - 8.0 GHz 50-Ohm or 75-Ohm systems: Broadband Fiber Optics Switched Filter Banks Wireless below 8 GHz

The LTC2337-18 is a low noise, high speed 18-bit successive approximation register (SAR) ADC with fully differential inputs. Operating from a single 5V supply, the LTC2337-18 has a ?10.24V true bipolar input range, making it ideal for high voltage applications which require a wide dynamic range. The LTC2337-18 achieves ?4LSB INL maximum, no missing codes at 18-bits with 100dB SNR.The LTC2337-18 has an on-board single-shot capable reference buffer and low drift (20ppm/?C max) 2.048V temperature compensated reference. The LTC2337-18 also has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy-chain mode. The fast 500ksps throughput with no cycle latency makes the LTC2337-18 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2337-18 dissipates only 35mW and automatically naps between conversions, leading to reduced power dissipation that scales with the sampling rate. A sleep mode is also provided to reduce the power consumption of the LTC2337-18 to 300?W for further power savings during inactive periods.Applications Programmable Logic Controllers Industrial Process Control High Speed Data Acquisition Portable or Compact Instrumentation ATE

The LTC3726 is a secondary-side controller for synchronous forward converters. When used in conjunction with the LTC3705/LTC3725 gate driver and primary-side controllers, the part creates a complete isolated power supply that combines the simplicity of OPTI-LOOP? compensation with the speed of secondary-side control.The LTC3726 has been designed to simplify the design of highly efficient, secondary-side forward converters. Working in concert with the LTC3705 or LTC 3725, the LTC3726 forms a robust, self-starting converter that eliminates the need for the separate bias regulator that is commonly used in secondary-side control applications. In addition, a proprietary scheme is used to multiplex gate drive signals and DC bias power across the isolation barrier through a single, tiny pulse transformer.The LTC3726 is available in a 16-lead SSOP package.Applications Isolated 48V Telecommunication Systems Internet Servers and Routers Distributed Power Step-Down Converters Automotive and Heavy Equipment

The ADA4945-1 is a low noise, low distortion, fully differential amplifier with two selectable power modes. The device operates over a broad power supply range of 3 V to 10 V. The low dc offset, dc offset drift, and excellent dynamic performance of the ADA4945-1 makes it well suited for a variety of data acquisition and signal processing applications. The device is an ideal choice for driving high resolution, high performance successive approximation register (SAR) and ?-? analog-to-digital converters (ADCs) on 4 mA of quiescent current (full power mode). The device can also be selected to operate on 1.4 mA of quiescent current (low power mode) to scale the power consumption to the desired performance necessary for an ADC drive application. The adjustable common-mode voltage allows the ADA4945-1 to match the input common-mode voltage of multiple ADCs. The internal common-mode feedback loop provides exceptional output balance, as well as suppression of even order harmonic distortion products.With the ADA4945-1, differential gain configurations are achieved with a simple external feedback network of four resistors determining the closed-loop gain of the amplifier. The ADA4945-1 is fabricated using Analog Devices, Inc., proprietary, silicon germanium (SiGe), complementary bipolar process, enabling the device to achieve low levels of distortion with an input voltage noise of only 1.8 nV/?Hz (full power mode).The ADA4945-1 is available in a RoHS-complaint, 3 mm ? 3 mm, 16-lead LFCSP. The ADA4945-1 is specified to operate from ?40?C to +125?C.Applications Low power ?-?, PulSAR?, and SAR ADC drivers Single-ended to differential converters Differential buffers Medical imaging Process control Portable electronics

Demonstration circuit 2707B uses the LTC®4418 to arbitrate between two input supply rails, selecting the highest priority, valid supply to power the load. The V1 rail is defined to have higher priority and the V2 rail has lower priority. Both rails have individual overvoltage and undervoltage comparators for setting valid window thresholds with external resistive dividers. If the highest priority rail voltage V1 falls out of the defined window (overvoltage or undervoltage), the V2 rail, if it is valid, is enabled and powers the load. Two or more LTC4418s can be cascaded to provide switchover between more than two rails.

The ADP5072 is a dual, high performance dc-to-dc regulator that generates independently regulated positive and negative rails.The input voltage range of 2.85 V to 5.5 V supports a wide variety of applications. The integrated main switch in both regulators enables generation of an adjustable positive output voltage up to 35 V and a negative output voltage down to ?30 V.The ADP5072 operates at a pin selected 1.2 MHz or 2.4 MHz switching frequency. The ADP5072 can synchronize with an external oscillator from 1.0 MHz to 2.6 MHz to ease noise filtering in sensitive applications. Both regulators implement programmable slew rate control circuitry for the MOSFET driver stage to reduce electromagnetic interference (EMI). Flexible start-up sequencing is provided with the options of manual enable, simultaneous mode, positive supply first, and negative supply first.The ADP5072 includes a fixed internal or resistor programmable soft start timer to prevent inrush current at power-up.Other key safety features in the ADP5072 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).The ADP5072 is available in a 20-ball WLCSP and is rated for a ?40?C to +125?C junction temperature range.Bipolar amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and multiplexersCharge coupled device (CCD) bias suppliesOptical module suppliesRF power amplifier biasTime of flight module supplies