The LT8315 is a high voltage flyback converter with integrated 630V/300mA switch. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency.At start-up, the LT8315 charges its INTVCC capacitor via a current source attached to the DRAIN pin. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer.The LT8315 operates from a wide range of input supply voltages and can deliver up to 15W of power. It is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing.Applications Isolated Telecom, Automotive, Industrial, Medical Power Supplies Isolated Off Line Housekeeping Power Supplies Electric Vehicles and Battery Stacks

The LT3045 is a high performance low dropout linear regulator featuring LTC?s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high performance voltage buffer, the LT3045 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.The device supplies 500mA at a typical 260mV dropout voltage. Operating quiescent current is nominally 2.2mA and drops to

The LT8362 is a current mode DC/DC converter with a 60V, 2A switch operating from a 2.8V to 60V input. With a unique single feedback pin architecture it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9?A quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300kHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skipping modes of operation with or without Spread Spectrum Frequency Modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start to control inductor current during startup.The LT8362 is available in a thermally enhanced 10-lead 3mm ? 3mm DFN package or a thermally enhanced 16-lead MSOP package with four pins removed.APPLICATIONS Industrial and Automotive Telecom Medical Diagnostic Equipment Portable Electronics?

The DC2531 is the starter kit for demonstrating the performance and ease of use of the LTC2986, which is a complete temperature measurement system on a chip. This kit includes the DC2508 (main demo circuit containing the LTC2986) and the DC2210 (a simple experiment circuit allowing bread boarding). In addition to the starter demonstration kit, sensor specific demonstration boards highlighting the performance of RTDs, thermistors, or thermocouples are also available.

The LT1997-1 is a difference amplifier that can be used to amplify small differential signals while rejecting large common mode signals making it an ideal choice for current sense applications. It combines a precision operational amplifier with highly-matched resistors to form a one-chip solution to amplify and level shift voltages accurately using no external components. It comes with three standard pin-selectable gain options (10, 20 and 50), which can be further combined to form gains from 0.141 to 80 with accuracy of 0.012% (120ppm). The LT1997-1 also operates with input voltages between V? and V? + 76V (independent of V+), enabling robust operation in demanding industrial environments. Its excellent resistor matching results in a common mode rejection ratio of greater than 109dB (Gain = 10).The resistors maintain their excellent matching over temperature; the matching temperature coefficient is guaranteed less than 1ppm/?C. The resistors are extremely linear with voltage, resulting in a gain nonlinearity of less than 2ppm. The LT1997-1 is fully specified at 5V and ?15V supplies and from ?40?C to 125?C. The device is available in space saving 16-lead MSOP and 4mm ? 4mm DFN14 packages.ApplicationsHigh Side or Low Side Current SensingBidirectional Wide Common Mode Range Current SensingHigh Voltage to Low Voltage Level TranslationIndustrial Data-Acquisition Front-EndsReplacement for Isolation CircuitsDifferential to Single-Ended Conversion

Demonstration circuit 2560A is a 18V, 10A synchronous step-down Silent Switcher®2 with spread spectrum frequency modulation featuring the LT8642S. The demo board is designed for 1.2V output from a 2.8V to 18V input. The LT8642S is a compact, ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The integrated bypass capacitors optimize all the fast current loops and make it easier to minimize EMI/EMC emissions by reducing layout sensitivity. Selectable spread spectrum mode can further improve EMI/EMC performance. Fast minimum on-time of 20ns enables high VIN to low VOUT conversion at high frequency. The LT8642S switching frequency can be programmed either via a resistor or external clock over a 200kHz to 3MHz range. The default frequency of demo circuit 2560A is 2MHz. The SYNC pin on the demo board is grounded (JP1 at BURST position) by default for low ripple Burst Mode® operation. To synchronize to an external clock, move JP1 to SYNC and apply the external clock to the SYNC terminal. Spread spectrum mode and forced continuous mode can be selected respectively by moving JP1 shunt. The demo board has an EMI filter installed. This EMI filter can be included by applying the input voltage at the VIN_ EMI terminal. The LT8642S data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this demo manual for demo circuit 2560A. The LT8643S is assembled in a 4mm × 4mm LQFN package with exposed pads for low thermal resistance. The layout recommendations for low EMI operation and maximum thermal performance are available in the data sheet section Low EMI PCB Layout and Thermal Considerations.

The LTC5553 is a high performance, microwave double balanced passive mixer that can be used for frequency upconversion or downconversion.The LTC5553?s mixer and integrated RF balun are optimized to cover the 3GHz to 20GHz RF frequency range. The device includes an integrated LO amplifier optimized for the 1GHz to 20GHz frequency range, requiring only 0dBm drive. The integrated IF balun is optimized to cover a very wide, 500MHz to 9GHz, frequency range while providing a single-ended 50? interface.The LTC5553 delivers exceptionally high IIP3 and P1dB, in addition to low LO to RF and LO to IF leakages. The part also offers a high level of integration in a small package.Applications 5G Broadband Wireless Access Microwave Transceivers Wireless Backhaul Point-to-Point Microwave Phased-Array Antennas C, X and Ku Band RADAR Test Equipment Satellite Modems

DC256A: Demo Board for the LTC1629 PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator.

Demonstration circuit 2570A is a dual output, high efficiency, high density, µModule® regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 33V and it can supply 50A maximum load current. The demo board has a LTM4678 µModule regulator, which is a dual 25A or single 50A step-down regulator with digital power system management. Please see LTM4678 data sheet for more detailed information. DC2570A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay onto your PC and use Analog Devices’ I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

The DC2574A-KIT is a standalone power/energy monitor that allows users to evaluate the LTC2947 power/energy monitor without a PC. This document describes how to quickly set up and operate the DC2574A-KIT; users should also refer to the DC2334 demo manual and LTC2947 data sheet for more details. The DC2574A-KIT includes all components required for stand-alone operation except for a power supply and load. The DC2574A-KIT operates with any USB compatible power supply and any load compatible with the LTC2947.

The LTC2341-16 is a 16-bit, low noise 2-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, both channels of this SoftSpan? ADC can be independently configured on a conversion-by-conversion basis to accept ?4.096V, 0V to 4.096V, ?2.048V, or 0V to 2.048V signals. One channel may also be disabled to increase throughput on the other channel.The wide input common mode range and 105dB CMRR of the LTC2341-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ?1.25LSB INL, no missing codes at 16 bits, and 93.4dB SNR, makes the LTC2341-16 an ideal choice for many applications requiring wide dynamic range.The LTC2341-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Either one or two lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.Applications Programmable Logic Controllers Industrial Process Control Medical Imaging High Speed Data Acquisition

Demonstration circuit 2599A features the LT8361 in a SEPIC configuration. It operates with a switching frequency of 400kHz and is designed to convert a 4.5V to 48V source to 24V, with up to 600mA output current (depending on input voltage). The LT8361 can operate with inputs as high as 60V. However, in this demo circuit, the input is limited by the voltage rating of the input capacitors. The demo board contains a selectable jumper, JP1, to aid in the selection of the desired Sync pin mode of operation. The default setting is Burst Mode® operation. This layout is optimized for good EMI performance and small solution size. Input and output filters and an optimized power switching loop, comprised of C20 and C21 are necessary to pass CISPR 25 Class 5 emissions, and are added by default. These components can be excluded in applications not requiring noise immunity. The data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this demo manual.

The DC2608 is the starter kit for demonstrating the performance and ease of use of the LTC2986-1, which is a complete temperature measurement system on a chip. This kit includes the DC2618 (main demo circuit containing the LTC2986-1) and the DC2210 (a simple experiment circuit allowing bread boarding). In addition to the starter demonstration kit, sensor specific demonstration boards highlighting the performance of RTDs, thermistors, or thermocouples are also available.

Demonstration circuit 2610A features the LTC6953, an Ultralow Jitter, 4.5GHz Clock Distributor with 11 Outputs and JESD204B Support. By default, the DC2610A is powered from a single 3.3V supply. An option is provided to power to the DC2610A from dual supplies, allowing for the LTC6953’s output supply pins to connect to an LTC Silent Switcher® and the LTC6953 input supply pin to connect to a low noise LDO. All differential inputs and seven of the differential outputs are populated with 0.5” spaced SMA connectors. These outputs are AC-coupled with 50Ω transmission lines making them suitable to drive 50Ω impedance instruments. The remaining four differential outputs are terminated with 100Ω. The LTC6953’s EZSync™ and SYSREF request functions are made available via the LTC6953 SPI interface or the EZS_SRQ SMA/turret connectors. The DC2609A, DC2610A, and DC2611A SMA placement was designed for ease of connection for all multi-part synchronization and SYSREF request modes. A calibration path is provided to aid in accurate LTC6953 propagation delay measurements. A DC2026 USB serial controller board is used for SPI communication with the LTC6953, controlled by the supplied LTC6952Wizard™ software.

The LTM4645 is a 25A output switching mode step-down DC/DC ?Module? (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all supporting components. Operating over an input voltage range of 4.7V to 15V, the LTM4645 supports an output voltage range of 0.6V to 1.8V, set by a single external resistor. Only a few input and output capacitors are needed.Its high efficiency design delivers about 86% efficiency from 12V input to 1.0V output with 25A continuous load current. High switching frequency and a current-mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase operation, N+1 phase redundancy, and output voltage tracking for supply rail sequencing.Fault protection features include overvoltage and overcurrent protection. The power module is offered in a space saving 9mm ? 15mm ? 3.51mm BGA package. The LTM4645 is available with SnPb (BGA) or RoHS compliant terminal finish.Applications Telecom, Networking and Industrial Equipment Point of Load Regulation

Demonstration circuit 2616A-B features a polyphase design using the LTM4645EY, a 25A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-B for input voltage range from 4.7V to 6V, connect INTVCC to SVIN (change R22, R42, R55 from OPT to 0Ω), DRVCC to VIN (change R21, R38, R52 from 0Ω to OPT, R2, R39, R53 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-B can deliver a nominal 75A output current with three LTM4645 modules in parallel. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulse-skipping mode for noise sensitive applications or burst mode operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4645 to synchronize to an external clock signal. The phase shift between two adjacent phases is 120 degrees. DC2616A-B has the option of choosing both internal and external compensation circuit for LTM4645. The LTM4645 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-B.

The ADA4899-1 is an ultralow noise (1 nV/?Hz) and distortion (

Demo circuit 2637A features four LT3045EDD-1s in parallel, generating an ultralow noise, ultrahigh power supply rejection ratio (PSRR) low dropout (LDO) regulator with programmable current limit. DC2637A operates over an input range of 3.8V to 20V, and is capable of delivering up to 2A output current by paralleling four LT3045EDD-1s with only 20mΩ ballast resistors. The VIOC tracking function of the LT3045EDD-1 controls an upstream switching converter to maintain a constant voltage across the regulator and hence minimize power dissipation. In the parallel configuration, connect the VIOC pin of only one IC to the switching converter, while the VIOC pins of the other ICs are left floating. The power good feedback (PGFB) pin is used to set a programmable power good threshold, and also activates the fast start-up circuitry. The PGFB is set on only one IC when they are paralleled. LT3045-1 also offers programmable current limit functionality by connecting a resistor from ILIM to GND on each device. Current monitoring is also achieved by sensing the ILIM pin voltage. Built-in protection includes reverse battery protection, reverse current protection, internal current limit with fold-back, and thermal limit with hysteresis. The LT3045-1 data sheet gives a complete description of the device, operation and applications information. The data sheet must be read in conjunction with this demo manual for demonstration circuit 2637A. The LT3045EDD-1 is assembled in a 12-lead (3mm × 3mm) plastic DFN package with an exposed pad on the bottom-side of the IC. Proper board layout is essential for maximum thermal performance.

The LTC3888/LTC3888-1/LTC3888-2 is a PMBus-compliant dual loop DC/DC synchronous step-down switching regulator controller with eight expandable phases supporting a wide range of master/slave configurations. The controller uses constant frequency current mode architecture to provide excellent transient response and output regulation. Each PWM master is capable of producing output voltages from 0.3V to 3.45V with multiple phase configurations using DrMOS devices that provide an output current monitor.PMBus configuration and monitoring is supported by LTpowerPlay? software. Programmable loop compensation and built-in load step emulation facilitate setting bandwidth based on input voltage and output load capacitance. PMBus commands allow read back of input voltage, output voltage and current, and operating status. Operating parameters can be set via PMBus command or stored in internal EEPROM for use at power up. Switching frequency, phase configuration, output voltage (LTC3888/LTC3888-2), output current limit (LTC3888-1) and device address can also be set using external programming resistors.APPLICATIONS High Current Distributed Power Systems Servers, Network and Storage Equipment

The LTM4671 is a quad DC/DC step-down ?Module (micromodule) regulator offering dual 12A and dual 5A output. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 3.1V to 20V, the LTM4671 supports an output voltage range of 0.6V to 3.3V for two 12A channels and 0.6V to 5.5V for two 5A channels, each set by a single external resistor. Only bulk input and output capacitors are needed.Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4671 is offered in 9.5mm ? 16mm ? 4.72mm BGA package.Applications Multirail Point-of-Load Regulation FPGAs, DSPs and ASICs Applications