DC1040A-B: Demo Board for the LTC3544B Quad Synchronous Step-Down Regulator, 2.25MHz, 300mA, 200mA, 200mA and 100mA.

The HMC3653LP 3BE is a HBT Gain Block MMI Camplifier covering 7 GHz to 15 GHz and packagedin a 3x3 mm plastic QFN SM T package. This versatileamplifier can be used as a cascadable IF or RF gainstage in 50 Ohm applications. The HMC3653LP 3BEdelivers 15 dB gain, and +15 dBm output P1dB withonly 4 dB noise figure.Applications Point-to-Point Radios Point-to-Multipoint Radios VSAT LO Driver for HMC Mixers Military EW & ECM

The HMC627ALP5E is a digitally controlled variable gain amplifier which operates from 50 MHz to 1 GHz, and can be programmed to provide anywhere from 11.5 dB attenuation, to 20 dB of gain, in 0.5 dB steps. The HMC627ALP5E delivers noise figure of 4.3 dB in its maximum gain state, with output IP3 of up to +36 dBm in any state. The dual mode gain control interface accepts either three wire serial input or 6 bit parallel word. The HMC627ALP5E also features a user selectable power up state and a serial output for cascading other Hittite serially controlled components. The HMC627ALP5E is housed in a RoHS compliant 5x5 mm QFN leadless package, and requires no external matching components.Applications Cellular / 3G Infrastructure WiBro / WiMAX / 4G Microwave Radio & VSAT Test Equipment & Sensors IF & RF Applications

The HMC686LP4(E) is a high dynamic range passive MMIC mixer with integrated LO amplifier in a 4x4 SMT QFN package covering 0.7 to 1.1 GHz. Excellent input IP3 performance of +34 dBm for down conversion is provided for 3G & 4G GSM/CDMA applications at an LO drive of 0 dBm. With an input 1 dB compression of +25 dBm, the RF port will accept a wide range of input signal levels. Conversion loss is 7.5 dB typical. The DC to 500 MHz IF frequency response will satisfy GSM/CDMA transmit or receive frequency plans.The HMC686LP4(E) is optimized to high side LO frequency plans for 0.7 - 1.1 GHz RF Band and is pin for pin compatible with the?HMC684LP4(E)?which is a 0.7 - 1.0 GHz converter optimized for low side LO. The HMC686LP4(E) is optimized to low side LO frequency plans for 1.4 - 1.5 GHz RF LTE band applications.APPLICATIONS Cellular/3G & LTE/WiMAX/4G Basestations & Repeaters GSM, CDMA & OFDM Transmitters and Receivers

The AD8417 is a high voltage, high resolution current shunt amplifier. It features an initial gain of 60 V/V, with a maximum ?0.3% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8417 offers excellent input common-mode rejection from ?2 V to +70 V. The AD8417 performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, power management, and solenoid control.The AD8417 offers breakthrough performance throughout the ?40?C to +150?C temperature range. It features a zero drift core, which leads to a typical offset drift of 0.1 ?V/?C throughout the operating temperature range and the common-mode voltage range. The AD8417 is qualified for automotive applications. The device includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type input common-mode voltages. The typical input offset voltage is ?200 ?V. The AD8417 is offered in 8-lead MSOP and SOIC packages.Applications High-side current sensing in Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection

The LT1997-2 is an attenuating (funnel) difference amplifierthat can be used to translate large differential signals tothe low voltage range compatible with ADCs. It combinesa precision operational amplifier with highly-matched resistorsto form a one-chip solution to attenuate and levelshift voltages accurately using no external components.It comes with three standard pin-selectable gain options(0.1, 0.2 and 0.25), which can be further combined toform gains from 0.0455 to 0.55 (attenuations of 1.82 to22) with accuracy of 0.006% (60ppm). The LT1997-2 alsoworks across a very wide input common-mode voltagerange (?255V), enabling robust operation in demandingindustrial environments. Its excellent resistor matchingresults in a common mode rejection ratio of greater than105dB.The resistors maintain their excellent matching overtemperature; the matching temperature coefficient isguaranteed less than 1ppm/?C. The resistors are extremelylinear with voltage, resulting in a gain nonlinearity of lessthan 2ppm.The LT1997-2 is fully specified at 5V and ?15V suppliesand from ?40?C to 125?C. The device is available in spacesaving 16-lead MSOP and 4mm ? 4mm DFN14 packages.APPLICATIONS High Voltage to Low Voltage Level Translation ADC Driver Bidirectional Wide Common Mode Range Voltage and Current Sensing Industrial Data-Acquisition Front-Ends Replacement for Isolation Circuits Differential to Single-Ended Conversion

Demonstration circuit DC2886A is a high power, high efficiency six-phase bidirectional converter featuring the LTC7871 and LTC7060. The terminals labeled VHIGH and VLOW are either inputs or outputs depending on the direction of power flow. When the switch at SW1 is in the BUCK position, VLOW provides a 14V output and VHIGH is the input with a range of 30V to 70V. When the switch is in the BOOST position, VHIGH provides a 48V output and VLOW is the input with a range of 10V to 14V. The maximum VLOW current is 180A in both directions. The maximum output power is 2.5kW when operating as a buck within the input voltage range. When operating as a boost, the maximum output power is 2.4kW when the input voltage is 14V. External airflow is required when operating at maximum power. The MOSFETs in each phase are driven by the LTC7060 half bridge driver. Each LTC7060 gate driver is placed next to the MOSFETs and receives a PWM signal from the LTC7871. The inductor current for each phase is sensed with a low 1mΩ sense resistor using a highly accurate AC/DC current sensing architecture with low power dissipation. The LTC7871’s constant-current loop provides a DC current limit for the current flowing in or out of the VLOW terminal depending on the state of the BUCK pin. This current can be programmed with the SETCUR pin and monitored with the IMON pin. The DC2886A provides a SPI compatible serial port. With a DC2026C (Linduino® One) demo board and QuikEval™ software on a host computer, the user can: Margin the regulated VLOW or VHIGH up or down. Margin the DC current limit up or down with the SETCUR pin. Adjust the frequency spread and modulation rate of the spread spectrum circuit, when spread spectrum is enabled. Monitor the operational status and faults of the LTC7871. Additional features of the DC2886A include: Pin selectable light load operating modes Buck: FCM, pulse-skipping and Burst Mode® Operation Boost: FCM and pulse-skipping SYNC and CLKOUT pins Optional jumper to enable spread spectrum modulation RUN, FAULT, PGOOD and PWNEN pins BUCK pin to externally control the direction of power flow Footprint for an optional heatsink

DC290A-B: Demo Board for the LTC1878 High Efficiency Monolithic Synchronous Step-Down Regulator.

The LTC3336 is a compact high efficiency nanopower hysteretic buck DC/DC which can deliver up to 250mA of output current from a 2.5V to 15V input. Input quiescent current is typically 80nA with the output in regulation at no load for output voltages less than 2.4V; this number is reduced further for higher output voltages at which internal circuits can be boot-strapped from the output. Performance specifications are ideal for primary (i.e., non-rechargeable) battery powered applications: low IQ plus the ability to set the peak current to a level matched to the battery?s maximum capacity point.The peak input currents of 10mA, 30mA, 100mA, and 300mA are pin selectable as well as the output voltages of 1.2V, 1.5V, 1.6V, 1.8V, 2.0V, 2.4V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V, 3.6V, 3.7V, 4.1V, 4.2V, and 5.0V.The LTC3336 is offered in a compact 12-lead 2mm ? 2mm LQFN package.APPLICATIONS Low Power Primary Battery Powered Systems (e.g., 1? ? 3? Li-Ion Primary, 3? ? 8? AAA) Remote Industrial Sensors (e.g., Meters, Alarms) Asset Trackers Electronic Door Locks Keep-Alive Supplies/Battery Backup SmartMesh? Applications

The LT3935 is a monolithic, synchronous, step-down DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. An output voltage limit can be set with a resistor divider to the FB pin.The switching frequency is programmable from 200kHz to 2MHz by an external resistor at the RT pin or by an external clock at the SYNC/SPRD pin. With the optional spread spectrum frequency modulation enabled, the frequency varies from 100% to 125% to reduce EMI.Additional features include an LED current monitor, an accurate EN/UVLO pin threshold, open-drain fault reporting for open-circuit and short-circuit load conditions, and thermal shutdown. The LT3935 utilizes proprietary Silent?Switcher technology for very low EMI.APPLICATIONSAutomotive LightingIndustrial and General Purpose Lighting