DC1174A-C: Demo Board for the LTC3725 Single-Switch Forward Controller and Gate Driver and LTC3726 Secondary-Side Synchronous Forward Controller

Demonstration circuit 1231A is a Dual Output, Dual Phase 5A Synchronous Buck Converter featuring the LTC3850EGN. The entire circuit, including the bulk output capacitors, fit within a 1.04” × 0.94” area on all layers. The package style for the LTC3850EGN is a 28-lead narrow plastic SSOP. The main features of the board include rail tracking, an internal 5V linear regulator for bias, RUN pins for each output and a PGOOD signal and a Mode selector that allow the converter to run in CCM, pulse skip or Burst Mode operation. Synchronization to an external clock is also possible through some minor component changes. Two versions of the board are available. DC-1231A-A has an on-board sense resistor for current feedback, while the DC1231A-B is configured with a DCR sense circuit that allows the converter to use the inductor’s DCR as the sense element instead of the on-board sense resistors to save cost and board space and improves efficiency.

Demonstration circuit 1254A is a polyphase 3-output step-down supply with tracking featuring the LTC3853EUJ. The input voltage range is 6.5V to 24V. For applications with narrow, 5V ±0.5V input range, the board has an optional resistor to tie the INTVCC pin to the VIN pin. The demo board provides three 5A outputs, with output voltages of 2.5V, 1.8V and 3.3V. The main features of the board include rail tracking, an internal 5V linear regulator for bias, RUN pins for each output, two PGOOD signals and a Mode selector that allow the converter to run in CCM, pulse skip or Burst Mode operation. Synchronization to an external clock is also possible through some minor component changes.

Demonstration circuit 1320 is a high power density step-down DC/DC converter featuring the LTC3608EWKG (DC1320A-A) or the LTC3609EWKG (DC1320A-B) high current, high input voltage monolithic DC/DC step-down converter. The input voltage of the DC1320A-A is from 5V to 20V and it provides a jumper-selectable output voltage of 1.5V, 1.8V, 2.5V, or 3.3V @ 8A.

Demonstration circuit 1344A is a low quiescent current step-down DC/DC converter featuring the LTC3834 in a 20-pin TSSOP exposed pad package. The DC1344A is programmed to generate a regulated 3.3V@5A output from a 4.5V to 32V input voltage.

Demonstration circuit 1346A is a low quiescent current synchronous step-down DC/DC controller featuring the LTC3834-1 in a 16-pin narrow SSOP package. The DC1346A is generates a regulated 3.3V@5A output from a 4.5V to 32V input voltage.

The ADRV9026 is a highly integrated, radio frequency (RF) agile transceiver offering four independently controlled transmitters, dedicated observation receiver inputs for monitoring each transmitter channel, four independently controlled receivers, integrated synthesizers, and digital signal processing functions providing a complete transceiver solution. The device provides the performance demanded by cellular infrastructure applications, such as small cell base station radios, macro 3G/4G/5G systems, and massive multiple in/multiple out (MIMO) base stations. The receiver subsystem consists of four independent, wide bandwidth, direct conversion receivers with wide dynamic range. The four independent transmitters use a direct conversion modulator resulting in low noise operation with low power consumption. The device also includes two wide bandwidth, time shared, observation path receivers with two inputs each for monitoring transmitter outputs. The complete transceiver subsystem includes automatic and manual attenuation control, dc offset correction, quadrature error correction (QEC), and digital filtering, eliminating the need for these functions in the digital baseband. Other auxiliary functions such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and general-purpose input/outputs (GPIOs) that provide an array of digital control options are also integrated. To achieve a high level of RF performance, the transceiver includes five fully integrated phase-locked loops (PLLs). Two PLLs provide low noise and low power fractional-N RF synthesis for the transmitter and receiver signal paths. A third fully integrated PLL supports an independent local oscillator (LO) mode for the observation receiver. The fourth PLL generates the clocks needed for the converters and digital circuits, and a fifth PLL provides the clock for the serial data interface. A multichip synchronization mechanism synchronizes the phase of all LOs and baseband clocks between multiple ADRV9026 chips. All voltage controlled oscillators (VCOs) and loop filter components are integrated and adjustable through the digital control interface. The serial data interface consists of four serializer lanes and four deserializer lanes. The interface supports both the JESD204B and JESD204C standards, operating at data rates up to 24.33 Gbps. The interface also supports interleaved mode for lower bandwidths, thus reducing the number of high speed data interface lanes to one. Both fixed and floating-point data formats are supported. The floating-point format allows internal automatic gain control (AGC) to be invisible to the demodulator device. The ADRV9026 is powered directly from 1.0 V, 1.3 V, and 1.8 V regulators and is controlled via a standard serial peripheral interface (SPI) serial port. Comprehensive power-down modes are included to minimize power consumption in normal use. The ADRV9026 is packaged in a 14 mm ? 14 mm, 289-ball chip scale ball grid array (CSP_BGA).Applications 3G/4G/5G TDD and FDD massive MIMO, macro and small cell base stations

The ADV3002 is a complete HDMI?/DVI link switch featuring equalized transition minimized differential signaling (TMDS) inputs, ideal for systems with long cable runs. The ADV3002 includes bidirectional buffering for the DDC bus and CEC line, with integrated pull-up resistors for the CEC line. Additionally, the ADV3002 includes an EDID replication function that enables one EDID EEPROM to be shared for all four HDMI ports.The ADV3002 is provided in a space-saving, 80-lead LQFP surface-mount Pb-free plastic package and is specified to operate over the 0?C to 85?C temperature range.PRODUCT HIGHLIGHTS Input cable equalizer enables use of long cables at the input. For a 24 AWG cable, the ADV3002 compensates for more than 20m at data rates up to 3 Gbps. Auxiliary multiplexer isolates and buffers the DDC bus and the CEC line, increasing total system capacitance limit. EDID replication eliminates the need for multiple EDID EEPROMs. EDID can be loaded from a single external EEPROM or from a system microcontroller. 5 V power combiner powers the EDID replicator and CEC buffer when local system power is off. Integrated hot plug detect pulse low on channel switch with programmable pulse width or direct manual control.APPLICATIONS Advanced television (HDTV) sets Projectors A/V receivers Set-top boxes

The ADV3219 and ADV3220 are high speed, high slew rate,buffered, 2:1 analog multiplexers. They offer a ?3 dB signalbandwidth greater than 800 MHz and channel switch times ofless than 20 ns with 1% settling. With ?82 dB of crosstalk and?88 dB isolation (at 5 MHz), the ADV3219 and ADV3220 areuseful in many high speed applications. The differential gain ofless than 0.02% and the differential phase of less than 0.02?,together with 0.1 dB flatness beyond 100 MHz while driving a75 ? back terminated load, make the ADV3219 and ADV3220ideal for all types of signal switching. The ADV3219/ADV3220 include an output buffer that can beplaced into a high impedance state to allow multiple outputs tobe connected together for cascading stages without the off channelsloading the output bus. The ADV3219 has a gain of +1, and theADV3220 has a gain of +2; they both operate on ?5 V supplieswhile consuming less than 7.5 mA of idle current.The ADV3219/ADV3220 are available in the 8-lead LFCSPpackage over the extended industrial temperature range of?40?C to +85?C. Applications Routing of high speed signals including ??Video (NTSC, PAL, S, SECAM, YUV, and RGB) ??Compressed video (MPEG, wavelet) ??3-level digital video (HDB3) Data communications Telecommunications

The ADV3221 and?ADV3222 are high speed, high slew rate, buffered 4:1 analog multiplexers. They offer a ?3 dB signal bandwidth greater than 800 MHz and channel switch times of less than 20 ns with 1% settling. With lower than ?58 dB of crosstalk and ?67 dB isolation (at 100 MHz), the ADV3221 and ADV3222 are useful in many high speed applications. The diffe-rential gain error of less than 0.02% and differential phase error of less than 0.02?, together with 0.1 dB gain flatness out to 100 MHz while driving a 75 ? back terminated load, make the ADV3221 and ADV3222 ideal for all types of signal switching.The ADV3221/ADV3222 include an output buffer that can be placed into a high impedance state. This allows multiple outputs to be connected together for cascading stages without the off channels loading the output bus. The ADV3221 has a gain of +1, and the ADV3222 has a gain of +2; they both operate on ?5 V supplies while consuming less than 7.5 mA of idle current. The channel switching is performed via latched control lines, allowing synchronous updating in a multiple ADV3221/ADV3222 envi-ronment.The ADV3221/ADV3222 are offered in a 16-lead SOIC package and are available over the extended industrial temperature range of ?40?C to +85?C.Applications Routing of high speed signals including ? ? Video (NTSC, PAL, S, SECAM, YUV, RGB) ? ? Compressed video (MPEG, wavelet) ? ? 3-level digital video (HDB3) ? ? Data communications ? ? Telecommunications