Demonstration circuit 901A features the LTC3444 and is a highly efficient, 1.5MHz fixed frequency buck-boost DC/DC converter. The input voltage can range from 3.1V to 5.0V and is suitable for Li-Ion or three-cell NiCd/NiMH battery applications while the output voltage can be set anywhere from 0.8V to 4.2V by injecting a 0.35V to 2.4V control signal. The demo board provides up to 400mA of output current.

The AD8339 is a quad I/Q demodulator configured to be driven by a low noise preamplifier with differential outputs. It is optimized for the LNA in the AD8332 / AD8334 / AD8335 family of VGAs. The part consists of four identical I/Q demodulators with a 4? local oscillator (LO) input that divides this signal and generates the necessary 0? and 90? phases of the internal LO that drive the mixers. The four I/Q demodulators can be used independently of each other (assuming that a common LO is acceptable) because each has a separate RF input.Continuous wave (CW) analog beamforming (ABF) and I/Q demodulation are combined in a single 40-lead ultracompact chip scale device, making the AD8339 particularly applicable in high density ultrasound scanners. In an ABF system, time domain coherency is achieved following the appropriate phase alignment and summation of multiple receiver channels. A reset pin synchronizes multiple ICs to start each LO divider in the same quadrant. Sixteen programmable 22.5? phase increments are available for each channel. For example, if Channel 1 is used as a reference and Channel 2 has an I/Q phase lead of 45?, then the user can phase align Channel 2 with Channel 1 by choosing the correct code.The mixer outputs are in current form for convenient summation. The independent I and Q mixer output currents are summed and converted to a voltage by a low noise, high dynamic range, current-to-voltage (I-V) transimpedance amplifier, such as the AD8021?or the AD829. Following the current summation, the combined signal is applied to a high resolution analog-to-digital converter (ADC), such as the AD7665?(16-bit, 570 kSPS).An SPI-compatible serial interface port is provided to easily program the phase of each channel; the interface allows daisy chaining by shifting the data through each chip from SDI to SDO. The SPI also allows for power-down of each individual channel and the complete chip. During power-down, the serial interface remains active so that the device can be programmed again.The dynamic range is typically 160 dB/Hz at the I and Q outputs. The AD8339 is available in a 6 mm ? 6 mm, 40-lead LFCSP and is specified over the industrial temperature range of ?40?C to +85?C.APPLICATIONS Medical imaging (CW ultrasound beamforming) Phased array systems Radar Adaptive antennas Communication receivers

The ADMV1012 is a compact, gallium arsenide (GaAs) design, monolithic microwave integrated circuit (MMIC) double sideband (DSB) downconverter in a RoHS compliant package optimized for point to point microwave radio designs that operate in the 17.5 GHz to 24 GHz input frequency range. The ADMV1012 provides 15 dB of conversion gain with 25 dB of image rejection, and 2.5 dB noise figure. The ADMV1012 uses a radio frequency (RF) low noise amplifier (LNA) followed by an in phase/quadrature (I/Q), double balanced mixer, where a driver amplifier drives the local oscillator (LO) with a ?2 multiplier. IF1 and IF2 mixer quadrature outputs are provided, and an external 90? hybrid is required to select the required sideband.The I/Q mixer topology reduces the need for filtering of unwanted sideband. The ADMV1012 is a much smaller alternative to hybrid style DSB downconverter assemblies and eliminates the need for wire bonding by allowing the use of surface-mount manufacturing assemblies.The ADMV1012 downconverter comes in a compact, thermally enhanced, 4.9 mm ? 4.9 mm, 32-terminal LCC. The ADMV1012 operates over the ?40?C to +85?C temperature range.Applications Point to point microwave radios Radars and electronic warfare systems Instrumentation, automatic test equipment (ATE)Satellite communications

The LTM8063 is a 40VIN, 2A continuous, 2.5A peak, step-down ?Module? (power module) regulator. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3.2V to 40V, the LTM8063 supports an output voltage range of 0.8V to 15V and a switching frequency range of 200kHz to 2.2MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8063 is packaged in a thermally enhanced, compact over-molded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8063 is RoHS compliant.Applications Automotive Battery Regulation Power for Portable Products Distributed Supply Regulation Industrial Supplies Wall Transformer Regulation

The AD5371 contains 40 14-bit DACs in a single 80-lead LQFP or 100-ball CSP_BGA. The device provides buffered voltage outputs with a span of 4? the reference voltage. The gain and offset of each DAC can be independently trimmed to remove errors. For even greater flexibility, the device is divided into five groups of eight DACs. Three offset DACs allow the output range of the groups to be adjusted. Group 0 can be adjusted by Offset DAC 0, Group 1 can be adjusted by Offset DAC 1, and Group 2 to Group 4 can be adjusted by Offset DAC 2.The AD5371 offers guaranteed operation over a wide supply range, with VSS from ?16.5 V to ?4.5 V and VDD from 9 V to 16.5 V. The output amplifier headroom requirement is 1.4 V operating with a load current of 1 mA.The AD5371 has a high speed serial interface that is compatible with SPI, QSPI?, MICROWIRE?, and DSP interface standards and can handle clock speeds of up to 50 MHz. It also has a 100 MHz low voltage differential signaling (LVDS) serial interface.The DAC registers are updated on reception of new data. All the outputs can be updated simultaneously by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register to allow removal of gain and offset errors.Each DAC output is gained and buffered on chip with respect to an external SIGGNDx input. The DAC outputs can also be switched to SIGGNDx via the CLR pin.APPLICATIONS Level setting in automatic test equipment (ATE) Variable optical attenuators (VOA) Optical switches Industrial control systems Instrumentation

BOARD EVAL FOR ADD8504

The ADN4605 is a 40 ? 40 asynchronous, protocol agnostic,?digital crosspoint switch, with 40 differential PECL/CML-compatible inputs and 40 differential programmable CML outputs.The ADN4605 is optimized for NRZ signaling with data rates of up to 4.25 Gbps per port. Each port offers adjustable levels of input equalization, programmable output swing, and output preemphasis/deemphasis.The ADN4605 nonblocking switch core implements a 40 ? 40?crossbar and supports independent channel switching through serial and parallel control interfaces. The ADN4605 has low?latency and very low channel-to-channel skew.An I2C, SPI, or parallel interface is used to communicate with the device for control of connectivity and other features.The ADN4605 is assembled in a 35 mm ? 35 mm, 352 BGA?package and operates over a temperature range of ?40?C to +85?C.APPLICATIONS Digital video (HDMI, DVI, DisplayPort, 3G/HD/SD-SDI) Fiber optic network switching High-speed serial backplane routing to OC-48 with FEC XAUI, 4x Fibre Channel, Infiniband?, and GbE over backplane Data storage networks

The ADN8835 is a monolithic TEC controller with an integrated TEC controller. It has a linear power stage, a pulse-width modulation (PWM) power stage, and two zero-drift, rail-to-rail chopper amplifiers. The linear controller works with the PWM driver to control the internal power MOSFETs in an H bridge configuration. By measuring the thermal sensor feedback voltage and using the integrated operational amplifiers as a proportional integral differential (PID) compensator to condition the signal, the ADN8835 drives current through a TEC to settle the temperature of a laser diode or a passive component attached to the TEC module to the programmed target temperature.The ADN8835 supports negative temperature coefficient (NTC) thermistors as well as positive temperature coefficient (PTC) resistive temperature detectors (RTDs). The target temperature is set as an analog voltage input either from a digital-to-analog converter (DAC) or from an external resistor divider.The temperature control loop of the ADN8835 is stabilized by PID compensation utilizing the built in, zero-drift chopper amplifiers. The internal 2.50 V reference voltage provides a 1% accurate output that biases a thermistor temperature sensing bridge as well as a voltage divider network to program the maximum TEC current and voltage limits for both the heating and cooling modes. With the zero-drift chopper amplifiers, excellent long-term temperature stability is maintained via an autonomous analog temperature control loop.APPLICATIONS TEC temperature control Optical modules Optical fiber amplifiers Optical networking systems Instruments requiring TEC temperature control

The ADP1031 is a high performance, isolated micropowermanagement unit (PMU) that combines an isolated flybackdc-to-dc regulator, an inverting dc-to-dc regulator, and abuck dc-to-dc regulator, providing three isolated power rails.Additionally, the ADP1031 contains four, high speed, serialperipheral interface (SPI) isolation channels and three general-purpose isolators for channel to channel applications where lowpower dissipation and small solution size is required.Operating over an input voltage range of +4.5 V to +60 V, theADP1031 generates isolated output voltages of +6 V to +28 V(adjustable version) or+ 21 V and +24 V (fixed versions) forVOUT1, factory programmable voltages of +5.15 V, +5.0 V, or+3.3 V for VOUT2, and an adjustable output voltages of ?24 V to?5 V for VOUT3.By default, the ADP1031 flyback regulator operates at a 250 kHzswitching frequency and the buck and inverting regulators operateat 125 kHz. All three regulators are phase shifted relative to eachother to reduce electromagnetic interference (EMI). The ADP1031can be driven by an external oscillator in the range of 350 kHzto 750 kHz to ease noise filtering in sensitive applications.The digital isolators integrated in the ADP1031 use AnalogDevices, Inc., iCoupler? chip scale transformer technology,optimized for low power and low radiated emissions.The ADP1031 is available in a 9 mm ? 7 mm, 41-lead LFCSP andis rated for a ?40?C to +125?C operating junction temperaturerange.Applications Industrial automation and process control Instrumentation and data acquisition systems Data and power isolation

The ADP1032 is a high performance, isolated micropower management unit (PMU) that combines an isolated flyback and a dc-to-dc regulator providing two isolated power rails. Additionally, the ADP1032 contains four high speed serial peripheral interface (SPI) isolation channels and three general-purpose isolators for channel to channel applications where low power dissipation and small solution size is required. Operating over an input voltage range of 4.5 V to 60 V, the ADP1032 generates isolated output voltages of 6 V to 28 V (adjustable version) or 24 V (fixed version) for VOUT1, and factory programmable voltages of 5.15 V, 5.0 V, or 3.3 V for VOUT2.?By default, the ADP1032 flyback regulator operates at a 250 kHz switching frequency, and the buck regulator operates at 125 kHz.?The two regulators are phase shifted relative to each other to reduce electromagnetic interference (EMI). The ADP1032 can be driven by an external oscillator in the range of 350 kHz to 750 kHz to ease noise filtering in sensitive applications.?The digital isolators integrated in the ADP1032 use Analog Devices, Inc., iCoupler? chip scale transformer technology, optimized for low power and low radiated emissions. The ADP1032 is available in a 9 mm ? 7 mm, 41-lead LFCSP and is rated for a ?40?C to +125?C operating junction temperature range.?