The HMC4069LP4E is an Integer-N synthesizer which incorporates a 10 to 1300MHz digital phase-frequency detectorwith a 10 to 2900MHz 5-bit frequency counter. It is intended for use in low phase noise synthesizer applications.The combination of high frequency of operation along with its ultra low phase noise floor make possible synthesizerswith wide loop bandwidth and low N resulting in fast switching and very low phase noise. When used in conjunctionwith a differential loop amplifier, the HMC4069LP4E generates output voltages that can be used to phase lock a VCOto a reference oscillator.The device is packaged in a 24-pin, 4 x 4mm leadless QFN surface mount package with an exposed ground paddlefor improved RF and thermal performance.Applications Point-to-point radios Satellite communication systems Military applications Sonet clock generation

The HMC7545 is a unidirectional, quad-channel, protocol and data rate agnostic, asynchronous signal conditioner, designed for short and intermediate range optical modules, line cards, and backplane applications operating at up to 14.2 Gbps.Each channel provides programmable input equalization, LOS and receiver detection, automatic output squelch, programmable output swing and output de-emphasis.All high speed differential inputs and outputs of the HMC7545 are current mode logic (CML), terminated on-chip with 50 ??to the positive supply, and can be dc-coupled or ac-coupled.The device uses a single supply, 2.5 V or 3.5 V, and its typical power dissipation is less than 80 mW per channel.The HMC7545 is packaged in a 36-lead, 4 mm ? 7 mm LFCSP package and operates from -40?C to +85?C.Applications QSFP+ direct attach active copper modules 10 Gb, 40 Gb Ethernet and OTN line cards 10 Gb, 40 Gb backplane drivers 8 Gb, 16 Gb Fibre Channel and InfiniBand? EDR line cards and backplane drivers 8 Gb, 10 Gb, 16 Gb active optical modules 8 Gb, 10 Gb, 16 Gb active copper cable assemblies 1.5 Gb, 3 Gb, 6 Gb, 12 Gb SAS/SATA PCIe 1.x, 2.0, 3.0 Broadband and automatic test and measurement

The HMC767LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an integrated Voltage Controlled Oscillator (VCO). The input reference frequency range is DC to 350 MHz while the advanced delta-sigma modulator design in the fractional synthesizer allows both ultra-fine step sizes and very low spurious products. The highly integrated structure provides excellent phase noise performance over temperature, shock and process. In addition, the HMC767LP6CE offers frequency sweep and modulation features, external triggering, double-buffering, exact frequency control, phase modulation and more. The HMC767LP6CE is packaged in a leadless QFN 6 x 6 mm surface mount package.For theory of operation and register map refer to the 'PLLs w/ Integrated VCO - Microwave VCOs' Operating Guide.Applications VSAT Radio Microwave Point-To-Point Radios Test Equipment & Industrial Control Military End-Use Phased Array Applications FMCW Radar Systems

DC968A-B Demo Board for: LT1952 Single Switch Synchronous Forward Controller LTC3900 Synchronous Rectifier Driver for Forward Converters LT4430 Secondary-Side Optocoupler Driver

The ADP7157 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Output voltages from 1.2 V to 3.3 V are possible depending on the model. Using an advanced proprietary architecture, the device provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 ?F ceramicoutput capacitor.The ADP7157 is available in four models that optimize powerdissipation and PSRR performance as a function of the inputand output voltage.The typical output noise the ADP7157 regulator is 0.9 ?V rms from 100 Hz to 100 kHz and 1.7 nV/?Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7157 is available in 10-lead, 3 mm ?3 mm LFCSP and 8-lead SOIC packages, making it not only avery compact solution, but also providing excellent thermalperformance for applications requiring up to 1.2 A of outputcurrent in a small, low profile footprint.Applications Regulation to noise sensitive applications: phase-locked loops (PLLs), voltage controlled oscillators (VCOs), and PLLs with integrated VCOs Communications and infrastructure Backhaul and microwave links

The ADP1870 / ADP1871?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 utilizing valley current-mode control architecture. This allows the ADP1870 / ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.The ADP1871 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 (ADP1871) section for more information).Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870 / ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO.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 precharged 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 ADP1870 / ADP1871 operate over the -40?C to +125?C junction temperature range and are available in 10-lead MSOP package.

The?ADP1047?/ ADP1048 are digital power factor correction (PFC) controllers that provide accurate input power metering capability and inrush current control for ac/dc systems. The ADP1047 is designed for single phase PFC applications; the ADP1048 is designed especially for interleaved and bridgeless PFC applications.The digital PFC function is based on a conventional boost PFC with multiplication of the output voltage feedback combined with the input current and voltage to provide optimum harmonic correction and power factor for ac/dc systems. All signals are converted into the digital domain to provide maximum flexibility; all key parameters can be reported and adjusted via the PMBus? interface. The ADP1047 / ADP1048 allow users to optimize system performance, maximize efficiency across the load range, and reduce design time to market.The ADP1047 / ADP1048 provide accurate rms measurement of input voltage, current, and power. This information can be reported to the microcontroller of the power supply via thePMBus interface.APPLICATIONS AC/DC power supplies for applications Computing Server & Storage Network and communication infrastructure Industrial and Medical

The ADP1764 is a low noise, low dropout (LDO) linear regulator. It is designed to operate from a single input supply with an input voltage as low as 1.10 V without the requirement of an external bias supply to increase efficiency and provide up to 4 A of output current (IOUT).The low 47 mV typical dropout voltage at a 4 A load allows theADP1764 to operate with a small headroom while maintainingregulation and providing better efficiency.The ADP1764 is optimized for stable operation with small 22 ?F ceramic output capacitors. The ADP1764 delivers optimal transientperformance with minimal printed circuit board (PCB) area.The ADP1764 is available in fixed output voltages ranging from 0.55 V to 1.5 V. The output voltage (VOUT) of the adjustableoutput model can be set from 0.5 V to 1.5 V through an external resistor connected between VADJ and ground.The ADP1764 has an externally programmable soft start time by connecting a capacitor to the SS pin. Short-circuit and thermaloverload protection circuits prevent damage in adverse conditions.The ADP1764 is available in a small, 16-lead LFCSP package forthe smallest footprint solution to meet a variety of applications.Applications Regulation to noise sensitive applications such as radio frequency (RF) transceivers, analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, phase-locked loops (PLLs), voltage controlled oscillators (VCOs) and clocking integrated circuits Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies Medical and healthcare Industrial and instrumentation

The?ADP1740?/ ADP1741 are CMOS, low dropout linear regulators that operate from 1.6 V to 3.6 V and provide up to 2 A of output current. These Low VIN / VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5V down to 1.8V I/O rails, and powering core voltages down to 0.75V. Using an advanced proprietary architecture, they provide high power supply rejection, low noise, and achieve excellent line and load transient response with just a small 4.7 ?F ceramic output capacitor.The ADP1740 is available in seven fixed output voltage options. The ADP1741 is an adjustable version that allows output voltages ranging from 0.75 V to 3.3 V via an external divider.The ADP1740 / ADP1741 allow an external soft start capacitor to be connected to program the startup. A digital power-good output allows power system monitors to check the health of the output voltage.The ADP1740 / ADP1741 are available in a 16-lead, 4 mm ? 4 mm LFCSP, making them not only very compact solutions, but also providing excellent thermal performance for applications that require up to 2 A of output current in a small, low profile footprint.APPLICATIONS Server computers Memory components Telecommunications equipment Network equipment DSP/FPGA/microprocessor supplies Instrumentation equipment/data acquisition systems

The ADP5310 combines dual buck regulators and one load switchin a 16-lead TSSOP_EP package that meets demanding performanceand board space requirements. The device enables directconnection to a wide input voltage range of 2.7 V to 15.0 V, allowingthe use of multiple alkaline/NiMH or lithium cells and otherpower sources.The buck regulator in Channel 1 uses a current mode, constantfrequency pulse-width modulation (PWM) control scheme forexcellent stability and transient performance, which provides upto 800 mA of output current. The automatic PWM/pulse skippingmode (PSM) control scheme achieves excellent efficiency in lightoutput current. A power-good signal indicates that the outputof Channel 1 is within 92% of its nominal value.An ultralow power buck regulator is integrated in Channel 2 withthe SYNC/MODE pin to control its operation mode. WhenSYNC/MODE is set to low, the buck regulator operates in hysteresismode, which draws only 700 nA of quiescent current to regulatethe output under zero load and provides up to 50 mA of outputcurrent. Hysteresis mode helps achieve excellent efficiency at lessthan 1 mW and can work as a keep-alive power supply in a batterypoweredsystem. When the SYNC/MODE pin is set to high, thebuck regulator switches to a traditional constant frequency PWMcontrol scheme to provide low output ripple for noise sensitiveapplications, and the buck regulator provides up to 300 mA ofoutput current in PWM mode.Channel 3 integrates a high-side load switch that operates from1.65 V to 5.5 V with its input connected to the output of Channel 2.The load switch provides power domain isolation and extendsbattery operation time.Other key safety features of the ADP5310 include overcurrentprotection (OCP), thermal shutdown (TSD), and input undervoltagelockout (UVLO). The ADP5310 is rated for the ?40?Cto +125?C junction temperature range.Applications Energy (gas and water) metering Portable and battery-powered equipment Medical applications? Keep-alive power supplies