DC2033A: Demo Board for the LT6110 Cable/Wire Drop Compensator.

The LTC3355 is a complete input power interrupt ride-through DC/DC system. The part charges a supercapacitor while delivering load current to VOUT, and uses energy from the supercapacitor to provide continuous VOUT backup power when VIN power is lost. The LTC3355 contains a nonsynchronous constant frequency current mode monolithic 1A buck switching regulator to provide a 2.7V to 5V regulated output voltage from an input supply of up to 20V.A 1A programmable CC/CV linear charger charges the supercapacitor from VOUT. When the VIN supply drops below the PFI threshold, the devices?s constant frequency nonsynchronous current mode 5A boost switching regulator delivers power from the supercapacitor to VOUT. A thermal regulation loop maximizes charge current while limiting the die temperature to 110?C. The IC has boost, charger and VIN programmable current limits. The LTC3355 is available in a 20-lead 4mm ? 4mm QFN surface mount package.Applications Ride-Through ?Dying Gasp? Supplies Power Meters/Industrial Alarms/Solid State Drives

The LTC3305 balances up to 4 lead-acid batteries connected in series. It is intended to be used in conjunction with a separate pre-existing battery charger as part of a high performance battery system. All voltage monitoring, gate drive, and fault detection circuitry is integrated.The LTC3305 employs an auxiliary battery or an alternative storage cell to transfer charge to or from each individual battery in the stack. A mode pin provides two operating modes, timer mode and continuous mode. In timer mode, once the balancing operation is completed, the LTC3305 goes into a low power state for a programmed time and then periodically rebalances the batteries. In continuous mode, the balancing operation continues even after the batteries are balanced to their programmed termination voltage.The LTC3305 is available in a thermally enhanced 38-lead TSSOP package.Applications Telecom Backup Systems Home Battery Powered Backup Systems Industrial Electric Vehicles Energy Storage Systems (ESS) Medical Equipment

HMC866LC3 - 1 - Single Channels per IC Limiting Amplifier Evaluation Board

The HMC1034LP6GE is a low-noise, wide-band clock generator IC with a fractional-N Phase Locked Loop (PLL) that features an integrated Voltage Controlled Oscillator (VCO). The device provides differential clock outputs between 125MHz and 3GHz range. The HMC1034LP6GE features low noise Phase Detector (PD) and Delta-Sigma modulator, capable of operating at up to 100MHz, permit wider loop-bandwidths with excellent spectral performance.The HMC1034LP6GE features industry leading phase noise and jitter performance, across the operating range, that enable it to improve link level jitter performance, Bit-Error-Rates (BER) and eye diagram metrics. The superior noise floor (<-165dBc/Hz) makes the HMC1034LP6GE an ideal source for a variety of applications?such as clock references for high speed data converters, physical layer devices (PHY), serializer/deserializer (SERDES) circuits, FPGAs and processors. The HMC1034LP6GE can also be used as an LO for 10G/40G/100G optical modules and transponders, as well as primary reference clock for 10G/40G/100G line cards, and for jitter attenuation and frequency translation.The differential output of the HMC1034LP6GE includes a 2-bit output amplitude control which may be set via the SPI serial programming interface, and an output Mute function. The Delta-Sigma Modulator of the HMC1034LP6GE features Hittite?s Exact Frequency Mode, which enables users to generate output frequencies with close to 0 Hz frequency error.APPLICATIONS 10G/40G/100G Optical Modules, Transponders,?Line Cards OTN and SONET/SDH Applications 1G/10G Ethernet Line Cards High Frequency Processor Clocks Low Jitter SAW Oscillator Replacement? Fiber Channel Interface Clocks Cellular/4G Infrastructure DDS Replacement 10G Optical Modules,?Transponders, Line Cards

The AD2S1200 is a complete 12-bit resolution tracking resolver-to-digital converter, integrating an on-board programmable sinusoidal oscillator that provides sine wave excitation for resolvers. An external 8.192 MHz crystal is required to provide precision time reference. This clock is internally divided to generate a 4.096 MHz clock to drive all the peripherals.The converter accepts 3.6 VP-P ?10% input signals, in the range of 10 kHz to 20 kHz on the Sin and Cos inputs. A Type II servo loop is employed to track the inputs and convert the input Sin and Cos information into a digital representation of the input angle and velocity. The bandwidth of the converter is set internally to 1.7 kHz with an external 8.192 MHz crystal. The maximum tracking rate is 1,000 rps.

The AD5061, a member of the Analog Devices, Inc., nanoDAC? family, is a low power, single 16-bit buffered voltage-out DAC that operates from a single 2.7 V to 5.5 V supply. The device offers a relative accuracy specification of ?4 LSB and operation is guaranteed monotonic with a ?1 LSB DNL specification. The device uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz, and is compatible with standard SPI, QSPI?, MICROWIRE, and DSP interface standards. The reference for the AD5061 is supplied from an external VREF pin. A reference buffer is also provided on-chip. The device incorporates a power-on reset circuit that ensures the DAC output powers up to mid-scale or zero scale and remains there until a valid write takes place to the device. The device contains a power-down feature that reduces the current consumption of the device to typically 330 nA at 5 V and provides software-selectable output loads while in power-down mode. The device is put into power-down mode over the serial interface. Total unadjusted error for the device is <3 mV. This device exhibits very low glitch on power-up.PRODUCT HIGHLIGHTS Available in a small 8-lead SOT-23 package. 16-bit resolution, 4 LSB INL. Low glitch on power-up. High speed serial interface with clock speeds up to 30 MHz. Three power-down modes available to the user. Reset to known output voltage (midscale or zero scale).APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators

The AD5259 provides a compact, nonvolatile LFCSP-10 (3 mm x 3 mm) or MSOP-10 (3 mm x 4.9 mm) packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers1 or variable resistors, but with enhanced resolution and solid-state reliability.?The terms digital potentiometer, VR (variable resistor), and RDAC are used interchangeably.The wiper settings are controllable through an I2C-compatible digital interface that is also used to read back the wiper register and EEPROM content. Resistor tolerance is also stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%.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 busAPPLICATIONS 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 AD5273 is a 64-position, one-time programmable (OTP) digital potentiometer4 that employs fuse link technology to achieve permanent program setting. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. It allows unlimited adjustments before permanently setting the resistance values. The AD5273 is programmed using a 2-wire, I2C?-compatible digital control. During write mode, a fuse blow command is executed after the final value is determined, thereby freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer). When the permanent setting is achieved, the value does not change, regardless of the supply variations or environ-mental stresses under normal operating conditions. To verify the success of permanent programming, Analog Devices, Inc., patterned the OTP validation such that the fuse status can be discerned from two validation bits in the read mode.In addition, for applications that program the AD5273 at the factory, Analog Devices offers device programming software2 running on Windows NT?, Windows? 2000, and Windows XP operating systems. This software application effectively replaces any external I2C controllers, which in turn enhances the user system?s time-to-market.The AD5273 is available in 1 k?, 10 k?, 50 k?, and 100 k? resistances and in a compact 8-lead SOT-23 standard package. It operates from ?40?C to +105?C. Along with its unique OTP feature, the AD5273 lends itself well to general digital potentiometer applications due to its effective resolution, array resistance options, small footprint, and low cost.An AD5273 evaluation kit and software are available. The kit includes the connector and cable that can be converted for factory programming applications.For applications that require dynamic adjustment of resistance settings with nonvolatile EEMEM, refer to the AD5231, AD5232, AD5233, and AD5235?family, and the AD5251, AD5252, AD5254, AD5258, and AD5259?family of nonvolatile memory digital potentiometers.APPLICATIONS System calibrations Electronics level settings Mechanical potentiometers and trimmer replacement Transducer circuit adjustments Programmable filters up to 6 MHz BW31 OTP allows unlimited adjustments before permanent setting. 2 Analog Devices cannot guarantee the software to be 100% compatible to all systems due to the wide variation in computer configurations. 3 Applies to 1 k? parts only. 4 The terms digital potentiometer, VR, and RDAC are used interchangeably.

The AD5310R /?AD5311R, members of the?nanoDAC? family, are low power, single-channel, 10-bit buffered voltage-out DACs. The devices include a 2.5 V, 2 ppm/?C internal reference. The output span can be programmed to be 0 V to VREF or 0 V to 2 ? VREF. All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The devices are available in 10-lead MSOP packages.The AD5310R / AD5311R also incorporate a power-on resetcircuit that ensures that the DAC output powers up to zeroscaleand remains there until a valid write takes place. Thedevice contains a power-down feature that reduces the currentconsumption of the device to 2 ?A at 5 V while in power-downmode.The AD5310R / AD5311R use a versatile SPI or I2C interface,including an asynchronous RESET pin and a VLOGIC pin, allowing 1.8 V compatibility.PRODUCT HIGHLIGHTS High Relative Accuracy (INL). ?0.5 LSB maximum. Low Drift 2.5 V On-Chip Reference.? 5 ppm/?C maximum temperature coefficient.APPLICATIONS Process controls Data acquisition systems Digital gain and offset adjustment Programmable voltage sources Optical modules