The AD5165 provides a compact 2.9 mm ? 2.8 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. The AD5165?s supply voltage requirement is 2.7 V to 5.5 V, but its logic voltage requirement is 1.8 V to VDD. The AD5165 consumes very low quiescent power during standby mode and is ideal for battery-operated applications.Wiper settings are controlled through a simple 3-wire interface. The interface is similar to the SPI? digital interface except for the inverted chip-select function that minimizes logic power consumption in the idling state. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the wiper register.Operating from a 2.7 V to 5.5 V power supply and consuming less than 50 nA typical standby power allows use in battery-operated portable or remote utility device applications.Note: The terms digital potentiometer, RDAC, and VR are used interchangeably.APPLICATIONS Battery-operated electronics adjustment Remote utilities meter adjustment Mechanical potentiometer replacement Transducer circuit adjustment Automotive electronics adjustment Gain control and offset adjustment System calibration VCXO adjustment

The AD7686 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF with respect to a ground sense IN?. The reference voltage, REF, is applied externally and can be set up to the supply voltage.Power dissipation scales linearly with throughput.The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus or provides an optional busy indicator. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from ?40?C to +85?C.APPLICATIONS Battery-powered equipment Data acquisitions Instrumentation Medical instruments Process controls

The DC2875A is a demonstration system for the LTC2971 Power System Manager that interfaces to various regulators. The board contains all the circuitry needed to demonstrate a power system that utilizes two 2-channel LTC2971 devices that manage four power supplies. The four power supplies include various switching regulators for the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated 4-channel digitally programmable power supply system. The LTC2971 is a 2-channel I2C/SMBus/PMBus Power System Manager that features accurate input current and energy measurement and is capable of managing ±60V supplies. The device monitors input current and input voltage, and calculates input power and energy. The DC2875A demonstrates the ability of the LTC2971 to sequence, trim, margin, supervise, monitor, and log faults for four power supplies. The LTC2971 monitors each channel’s output voltage and output current and also monitors each channel’s external temperature sensor and its own internal die temperature. The DC2875A board contains four independent power supply rails. All four rails are based on DC/DC switching regulators. The +36V and +32V channels are managed by an LTC2971 and the ±24V channels are managed by an LTC2971-1. The board is pre-configured with these voltages and may be re-configured with feedback resistors. The LTpowerPlay® graphical user interface (GUI) supports this demonstration system and enables complete control of all the features of the LTC2971. Together, the LTpowerPlay software and DC2875A hardware system create a powerful development environment for designing and testing configuration settings of the LTC2971. LTpowerPlay stores these settings in the LTC2971 internal EEPROM or in a project file. The software displays all of the configuration settings and real time measurements from the Power System Management IC. Telemetry allows easy access and decoding of the fault log created by the LTC2971. The board comes preprogrammed with the EEPROM values appropriate for the four power supply rails on the DC2875A. Just plug and play! Order pre-programmed devices from Analog Devices Express (ADX) using LTpowerPlay.

The ADP1882 / ADP1883?are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by using valley current-mode control architecture. This allows the ADP1882 / ADP1883 to drive all N-channel power stages to regulate output voltages as low as 0.8 V.The ADP1883 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1883) section for more information).Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1882 / ADP1883 are well suited for a wide range of applications. These ICs not only operate from a 2.75 V to 5.5 V bias supply, but they also can accept a power input as high as 20 V.In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a pre-charged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulse-width modulation (PWM) option, reduce the external part count and improve efficiency.The ADP1882 / ADP1883 operate over the -40?C to +125?C junction temperature range and are available in a 10-lead MSOP.

The ADRV9008-2 is a highly integrated, RF agile transmit subsystem offering dual channel transmitters, observation path receiver, integrated synthesizers, and digital signal processing functions. The IC delivers a versatile combination of high performance and low power consumption demanded by 2G, 3G and 4G macro-cell base stations, and active antenna, applications.The transmitters use an innovative direct conversion modulator that achieves multi-carrier macro-base-station quality performance and very low power. In 3G/4G mode, the maximum large-signal bandwidth is 200MHz. In MC-GSM mode, which has higher in-band SFDR, the maximum large-signal bandwidth is 75MHz.The observation path consists of a wide bandwidth direct-conversion receiver with state-of-the-art dynamic range. The complete receive subsystem includes dc offset correction, quadrature correction, and digital filtering thus eliminating the need for these functions in the digital baseband. Several auxiliary functions such as ADCs, DACs, and GPIOs for PA and RF-front-end control are also integrated. The fully integrated phase locked loops (PLLs) provide high performance, low power fractional-N RF frequency synthesis for the transmitter and receiver sections. An additional synthesizer is used to generate the clocks needed for the converters, digital circuits, and the serial interface. Special precautions have been taken to provide the isolation demanded in high performance base station applications. All VCO and loop filter components are integrated.The high-speed JESD204B interface supports up to 12.288 Gbps lane rates resulting in two lanes per transmitter in the widest bandwidth mode and two lanes for the observation path receiver in the widest bandwidth mode. The core of the ADRV9008-2 can be powered directly from 1.3 V and 1.8 V regulators and is controlled via a standard 4 wire serial port. Comprehensive power-down modes are included to minimize power consumption in normal use. The ADRV9008-2 is packaged in a 12mm ? 12 mm, 196-ball chip scale ball grid array (CSP_BGA).

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 LTM4630A is a dual 18A or single 36A output switchingmode step-down DC/DC ?Module? (micromodule)regulator with wider VOUT range and higher efficiencythan LTM4630. Included in the package are the switchingcontrollers, power FETs, inductors and all supportingcomponents. Operating from an input voltage range of4.5V to 18V, the LTM4630A supports two outputs eachwith an output voltage range of 0.6V to 8V, each set by asingle external resistor. Its high efficiency design deliversup to 18A continuous current for each output. Only a fewinput and output capacitors are needed. The LTM4630Ais pin compatible with the LTM4620 and LTM4620A (dual13A, single 26A) and the LTM4630 (dual 18A, single 36A).The device supports frequency synchronization, multiphaseoperation, Burst Mode operation and output voltagetracking for supply rail sequencing and has an onboardtemperature diode for device temperature monitoring. Highswitching frequency and a current mode architecture enablea very fast transient response to line and load changeswithout sacrificing stability.Fault protection features include overvoltage andovercurrent protection. The LTM4630A is offered in 16mm? 16mm ? 4.41mm LGA and 16mm ? 16mm ? 5.01mmBGA packages.*Maximum VIN = 15V and VOUT = 5.3V with date code before 1720 Features VOUT LTM4630 0.6V to 1.8V LTM4630-1 0.8% DC and 3% Transient Accuracy 0.6V to 1.8V LTM4630A Higher Light Load Efficiency 0.6V to 5.3V Applications Telecom and Networking Equipment Storage and ATCA Cards Industrial Equipment

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 ADP2386 is a synchronous step-down, dc-to-dc regulator with an integrated 44 m?, high-side power MOSFET and an 11 m?, synchronous rectifier MOSFET to provide a high efficiency solution in a compact 4 mm ? 4 mm LFCSP package. This device uses a peak current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The switching frequency of the ADP2386 can be programmed between 200 kHz to 1.4 MHz. To minimize system noise, the synchronization function allows the switching frequency to be synchronized to an external clock.The ADP2386 requires minimal external components and operates from an input voltage of 4.5 V to 20 V. The output voltage can be adjusted from 0.6 V to 90% of the input voltage and delivers up to 6 A of continuous current. Each IC draws less than 110 ?A current from the input source when it is disabled.This regulator targets high performance applications that require high efficiency and design flexibility. External compensation and an adjustable soft start function provide design flexibility. The power-good output and precision enable input provide simple and reliable power sequencing.Other key features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP) and thermal shutdown (TSD).The ADP2386 operates over the ?40?C to +125?C junction temperature range and is available in a 24-lead, 4 mm ? 4 mm LFCSP package.Applications Communications infrastructure Networking and servers Industrial and instrumentation Healthcare and medical Intermediate power rail conversion DC-to-dc point-of-load applications

Demonstration circuit 2810A features the LTM4673: the wide input and output voltage range, high efficiency and power density, quad output DC/DC step-down μModule® regulator with Digital Interface for control and monitoring. The DC2810A default input voltage range is 4.5V to 15V. However, if VIN is lower than 4.5V, minor modification to certain existing onboard components is required. Please refer to Step 8: Operation at VIN ≤ 4.5V in Quick Start Procedure section. The factory default output voltages are VOUT0 = 1V, VOUT3 = 0.9V at 12A per channel; VOUT1 = 1.2V, VOUT2 = 1.8V at 5A per channel. The DC2810A output voltages can be adjusted from 0.6V up to 3.3V for channel 0 and channel 3 and from 0.6V to 5.5V for channel 1 and channel 2. The default switching frequencies are 600kHz for channel 0 and channel 3 and 1MHz for channel 1 and channel 2. Forced airflow and heatsink might also be used to further optimize the output power when all output rails are on and fully loaded. Programming the output voltages to values greater than 1.8V, may require derating output current based on thermal derating curves provided in the data sheet of the LTM4673. The DC2810A comes with PMBus interface and digital power system management functions. An onboard 12-pin connector is available for users to connect the dongle DC1613A to the DC2810A and provides an easy way to communicate and program the part using LTpowerPlay® software development tool. LTpowerPlay software and I2C/PMBus/SMBus Dongle DC1613A allows users to monitor real time telemetry of input and output voltages, input and output current, internal IC die temperatures, and fault logs. The LTM4673 is available in a thermally enhanced, low profile, 361-Lead (16mm × 16mm × 4.72mm) BGA package. It is recommended to read the data sheet and demo manual of LTM4673 prior to use or making any hardware changes to DC2810A. LTpowerPlay software can be downloaded here. The USB to PMBus Controller Dongle DC1613A for use with LTpowerPlay is available here.