DC1978A: Demo Board for the LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement.

DC1983A: Demo Board for the LTC5510 1MHz to 6GHz Wideband High Linearity Active Mixer.

The LTC5510 is a high linearity mixer optimized for applications requiring very wide input bandwidth, low distortion, and low LO leakage. The chip includes a double-balanced active mixer with an input buffer and a high speed LO amplifier. The input is optimized for use with 1:1 transmission line baluns, allowing very wideband impedance matching. The mixer can be used for both up- and down-conversion and can be used in wideband systems.The LO can be driven differentially or single-ended and requires only 0dBm of LO power to achieve excellent distortion and noise performance, while also reducing external drive circuit requirements. The LTC5510 offers low LO leakage, greatly reducing the need for output filtering to meet LO suppression requirements.The LTC5510 is optimized for 5V but can also be used with a 3.3V supply with slightly reduced performance. The shutdown function allows the part to be disabled for further power savings.Applications Wideband Receivers/Transmitters Cable Downlink Infrastructure HF/VHF/UHF Mixer Wireless Infrastructure

Demonstration circuit 1989B-C is a high efficiency, high density, μModule regulator with 4.5V to 17V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 100A maximum load current. The demo board has four LTM4676A μModule regulators. The LTM4676A is a dual 13A or single 26A step-down regulator with PMBus power system management. Please see LTM4676A data sheet for more detailed information.

The LTC3111 is a fixed frequency, synchronous buckboost DC/DC converter with an extended input and output range. The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage.With an input and output range of 2.5V to 15V, the LTC3111 is well suited for a wide variety of single or multiple-cell batteries, back-up capacitor or wall adapter source applications. Low RDS(ON) internal N-channel MOSFET switches and selectable PWM or Burst Mode operation produce high efficiency over a wide range of operating conditions. An accurate RUN pin allows the user to program the turn-on threshold voltage of the converter. Other features include: short-circuit protection, internal soft-start and thermal shutdown.The LTC3111 is offered in both thermally enhanced 14-lead (3mm ? 4mm ? 0.75mm) DFN and 16-lead MSOP packages.Applications 3.3V or 5V from 1, 2 or 3 Li-Ion, Multiple-Cell?Alkaline/NiMH Batteries RF Transmitters Military, Industrial Power Systems

The LTC3622 is a dual 1A output, high efficiency synchronous monolithic step-down regulator capable of operating from input supplies up to 17V. The switching frequency is fixed to 1MHz or 2.25MHz with a ?50% synchronization range to an external clock. The regulator features ultralow quiescent current and high efficiency over a wide output voltage range.The step-down regulators operate from an input voltage range of 2.7V to 17V and provide an adjustable output from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency. Burst Mode? operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest ripple noise. The switching regulators can be synchronized to an external clock. Furthermore, fixed VOUT options are available to eliminate the external feedback resistors.? LTC3622 Options Part Name Frequency VOUT LTC3622 1.00MHz Adjustable LTC3622-2 2.25MHz Adjustable LTC3622-23/5 2.25MHZ 5V/3.3V ?Applications Battery Powered Systems Point-of-Load Supplies Portable ? Handheld Scanners

The LTC3862-2 is a two-phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. Two-phase operation reduces system filtering capacitance and inductance requirements.The operating frequency can be set with an external resistor over a 75kHz to 500kHz range and can be synchronized to an external clock using the internal PLL. Multiphase operation is possible using the SYNC input, the CLKOUT output and the PHASEMODE control pin allowing 2-, 3-, 4-, 6- or 12-phase operation.Other features include an internal 10V LDO with undervoltage lockout protection for the gate drivers, a precision RUN pin threshold with programmable hysteresis, soft-start and programmable leading edge blanking and maximum duty cycle. Part Number Vin Range INTVcc UV+ UV- LTC3862 4V to 36V 5V 3.3V 2.9V LTC3862-1 8.5V to 36V 10V 7.5V 7.0V LTC3862-2 5.5V to 36V 10V 4.4V 3.9V Applications Automotive, Telecom and Industrial Power Supplies

Demonstration circuit 2007A-B features a PolyPhase® design using the LTM4630EV, the high efficiency, high density, dual 18A, switch mode step-down power μModule® regulator. The input voltage is from 4.5V to 15V. The output voltage is jumper selectable from 0.9V to 1.8V. The DC2007A-B can deliver a nominal 105A output current. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The LTM4630 on DC2007A-B always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal.

The LTM8054 is a 36VIN, buck-boost ?Module?(micromodule) regulator. Included in the package are theswitching controller, power switches, inductor and supportcomponents. A resistor to set the switching frequency, aresistor divider to set the output voltage, and input andoutput capacitors are all that are needed to complete thedesign. Other features such as input and output averagecurrent regulation may be implemented with just a fewcomponents. The LTM8054 operates over an input voltagerange of 5V to 36V, and can regulate output voltagesbetween 1.2V and 36V. The SYNC input and CLKOUToutput allow easy synchronization.The LTM8054 is housed in a compact overmolded ballgrid array (BGA) package suitable for automated assemblyby standard surface mount equipment. The LTM8054 isRoHS compliant.Buck Boost Selection Table LTM8054 LTM8055 LTM8056 VIN (Operation) 36 36 58 VIN Abs Max 40 40 60 VOUT Abs Max 40 40 60 IOUT (Peak) 24VIN, 12VOUT 5.4 8.5 5.5 Package 15 x 11.25mm x 3.42mm BGA 15 x 15mm x 4.92mm BGA 15 x 15mm x 4.92mm BGA Applications High Power Battery-Operated Devices Industrial Control Solar Powered Voltage Regulator Solar Powered Battery Charging

The AD91641 is a high performance, 16-bit digital-to-analog converter (DAC) and direct digital synthesizer (DDS) that supports update rates to 6 GSPS. The DAC core is based on a quad-switch architecture coupled with a 2? interpolator filter that enables an effective DAC update rate of up to 12 GSPS in some modes. The high dynamic range and bandwidth makes these DACs ideally suited for the most demanding high speed radio frequency (RF) DAC applications.The DDS consists of a bank of 32, 32-bit numerically controlled oscillators (NCOs), each with its own phase accumulator.When combined with a 100 MHz serial peripheral interface (SPI) and fast hop modes, phase coherent fast frequency hopping (FFH) is enabled, with several modes to support multiple applications.In baseband mode, wide analog bandwidth capability combines with high dynamic range to support DOCSIS 3.1 cable infrastructure compliance from the minimum of one carrier up to the full maximum spectrum of 1.791 GHz of signal bandwidth. A 2? interpolator filter (FIR85) enables the AD9164 to be configured for lower data rates and converter clocking to reduce the overall system power and ease the filtering requirements. In Mix-Mode? operation, the AD9164 can reconstruct RF carriers in the second and third Nyquist zones up to 7.5 GHz while still maintaining exceptional dynamic range. The output current can be programmed from 8 mA to 38.76 mA. The AD9164 data interface consists of up to eight JESD204B serializer/deserializer (SERDES) lanes that are programmable in terms of lane speed and number of lanes to enable application flexibility.An SPI interface configures the AD9164 and monitors the status of all registers. The AD9164 is offered in a 165-ball, 8 mm ? 8 mm, 0.5 mm pitch CSP_BGA package, and a 169-ball, 11 mm ? 11 mm, 0.8 mm pitch, CSP_BGA package, including a leaded ball option.Product Highlights High dynamic range and signal reconstruction bandwidth supports RF signal synthesis of up to 7.5 GHz. Up to eight lanes JESD204B SERDES interface flexible in terms of number of lanes and lane speed. Bandwidth and dynamic range to meet DOCSIS 3.1 compliance and multiband wireless communications standards with margin.?Applications Broadband communications systems DOCSIS 3.1 CMTS/ video on demand (VOD)/edge quadrature amplitude modulation (EQAM) Wireless communications infrastructure W-CDMA, LTE, LTE-A, point to point