The ADRF5547 is a dual-channel, integrated RF, front end multichip module designed for time division duplexing (TDD) applications that operates from 3.7 GHz to 5.3 GHz. The ADRF5547 is configured in dual channels with a cascading twostage low noise amplifier (LNA) and a high power silicon, single-pole, double-throw (SPDT) switch.In high gain mode, the cascaded, two-stage LNA and switch offer a low noise figure of 1.6 dB and high gain of 33 dB at 4.6 GHz with an output third order intercept point (OIP3) of 31 dBm (typical).In low gain mode, one stage of the two-stage LNAs is in bypass, providing 18 dB gain at lower current of 36 mA. In power-down mode, the LNAs are turned off and the device draws 12 mA.?In transmit operation, when RF inputs are connected to a termination pin (TERM-ChA or TERM-ChB), the switch provides a low insertion loss of 0.50 dB and handles long term evolution (LTE) average power (9 dB peak to average ratio (PAR)) of 40 dBm for full lifetime operation and 43 dBm for single event (<10 sec) LNA protection operation.The device comes in an RoHS compliant, compact, 40-lead, 6 mm ? 6 mm LFCSP.Applications? Wireless infrastructure TDD Massive Multiple input and Multiple Output (MIMO) and Active Antenna Systems TDD-based Communication Systems

The ADRF6521 is a dual, fully differential, low noise and low distortion variable gain amplifier (VGA). The high spurious-free dynamic range over the gain range makes the ADRF6521 ideal for communication systems with dense constellations, multiple carriers, and nearby interferers. The VGA has a 21 dB attenuation range with a typical voltage gain of 18 dB. The differential input impedance is 100 ?, while the differential output impedance is 16 ?. The ?1 dB gain flatness bandwidth is 2.5 GHz. The output buffers are capable of swinging 1.5 V p-p into 100 ? loads at >55 dBc for second-order and third-order intermodulation distortion (IMD2 and IMD3), and for second and third harmonic distortion (HD2 and HD3) from low frequency to 1 GHz. Variable output dc offset control is accomplished with the OFS1 and OFS2 pins, and the output common-mode can be controlled with the VOCM pin.The ADRF6521 flexibly operates from a single +5 V supply or from a range of dual supplies and consumes a total supply current of 200 mA. When fully disabled, it consumes 25 mA typical. The ADRF6521 is fabricated in an advanced silicon-germanium BiCMOS process and is available in a 20-lead, exposed pad, 3 mm ? 3 mm LFCSP. Performance is specified over the ?40?C to +85?C temperature range.Applications Point-to-point and point-to-multipoint radios Baseband IQ receivers Diversity receivers ADC drivers Instrumentation Medical

The ADRF6650 is a highly integrated downconverter that integrates dual mixers, dual digital switched attenuators, dual digital variable gain amplifiers, a phase-locked loop (PLL), and voltage controlled oscillators (VCOs). In addition, the ADRF6650 integrates two radio frequency (RF) baluns, serial gain control (SGC) controls, and fast enable inputs for time division duplex (TDD) operation.The on-chip RF baluns enable the ADRF6650 to support 50 ? terminated RF inputs. The integrated passive mixer provides a highly linear downconversion for a 200 MHz, sliding, intermediate frequency (IF) window. The ADRF6650 uses broadband square wave limiting local oscillator (LO) amplifiers to achieve an RF bandwidth of 450 MHz to 2700 MHz. Unlike conventional narrow-band sine wave LO amplifier solutions, this amplifier permits the LO to be applied either above or below the RF input over an extremely wide bandwidth.The ADRF6650 offers two alternatives for generating the differential LO input signal: internally via the on-chip fractional-N synthesizer with low phase noise VCOs, or externally via a low phase noise LO signal. The integrated PLL/VCO enables continuous LO coverage from 450 MHz to 2900 MHz. The PLL referenceinput supports a wide frequency range and includes integrated reference dividers before the phase frequency detector (PFD).The ADRF6650 is fabricated using an advanced silicon-germanium (SiGe) bipolar complementary metal-oxide semiconductor(BiCMOS) process. It is available in a 56-lead, RoHS-compliant, 8 mm ? 8 mm, lead frame chip scale package (LFCSP) package with an exposed pad. Performance is specified over the ?40?C to +105?C maximum paddle temperature.Applications Multiband/multistandard cellular base station diversity receivers Wideband radio link diversity downconverters Multimode cellular extenders and picocells

The ADRF6780 is a silicon germanium (SiGe) design, wideband,microwave upconverter optimized for point to point microwaveradio designs operating in the 5.9 GHz to 23.6 GHz frequencyrange.The upconverter offers two modes of frequency translation. The device is capable of direct conversion to radio frequency (RF) from baseband I/Q input signals, as well as single sideband (SSB) upconversion from a real intermediate frequency (IF) input carrier frequency. The baseband inputs are high impedance and are generally terminated off chip with 100 ? differential back terminations. The baseband I/Q input path can be disabled and a modulated real IF signal anywhere from 0.8 GHz to 3.5 GHz can fed into the IF input path and upconverted to 5.9 GHz to 23.6 GHz while suppressing the unwanted sideband by typically better than 25 dBc. The serial port interface (SPI) allows tweaking of the quadrature phase adjustment to allow optimum sideband suppression. In addition, the SPI interface allows powering down the output power detector to reduce power consumption when power monitoring is not necessary.The ADRF6780 upconverter comes in a compact, thermallyenhanced, 5 mm ? 5 mm LFCSP package. The ADRF6780operates over the ?40?C to +85?C temperature range.APPLICATIONS Point to point microwave radios Radar, electronic warfare systems Instrumentation, automatic test equipment (ATE)

The ADRV9002 is a highly integrated RF transceiver that has dual-channel transmitters, dual-channel receivers, integrated synthesizers, and digital signal processing functions.The ADRV9002 is a high performance, highly linear, high dynamic range transceiver designed for performance vs. power consumption system optimization. The device is configurable and ideally suited to demanding, low power, portable and battery powered equipment. The ADRV9002 operates from 30 MHz to 6000 MHz and covers the UHF, VHF, industrial, scientific, and medical (ISM) bands, and cellular frequency bands in narrow-band (kHz) and wideband operation up to 40 MHz. The ADRV9002 is capable of both TDD and FDD operation.The transceiver consists of direct conversion signal paths with state-of-the-art noise figure and linearity. Each complete receiver and transmitter subsystem includes dc offset correction, quadrature error correction (QEC), and programmable digital filters, which eliminate the need for these functions in the digital baseband. In addition, several auxiliary functions, such as auxiliary analog-to-digital converters (ADCs), auxiliary digital-to-analog converters (DACs), and general-purpose inputs/outputs (GPIOs), are integrated to provide additional monitoring and control capability.The fully integrated phase-locked loops (PLLs) provide high performance, low power, fractional-N frequency synthesis for the transmitter, receiver, and clock sections. Careful design and layout techniques provide the isolation required in high performance personal radio applications. All voltage controlled oscillator (VCO) and loop filter components are integrated to minimize the external component count. The local oscillators (LOs) have flexible configuration options and include fast lock modes.The transceiver includes low power sleep and monitor modes to save power and extend the battery life of portable devices while monitoring communications.The fully integrated, low power digital predistortion (DPD) is optimized for both narrow-band and wideband signals and enables linearization of high efficiency power amplifiers.The ADRV9002 core can be powered directly from 1.0 V, 1.3 V, and 1.8 V regulators and is controlled via a standard 4-wire serial port. Other voltage supplies are used to provide proper digital interface levels and to optimize the receiver, transmitter, and auxiliary converter performance.High data rate and low data rate interfaces are supported using configurable CMOS or low voltage differential signaling (LVDS) serial synchronous interface (SSI) choice.The ADRV9002 is packaged in a 12 mm ? 12 mm, 196-ball chip scale package ball grid array (CSP_BGA).APPLICATIONS Mission critical communications Very high frequency (VHF), ultrahigh frequency (UHF), and cellular to 6 GHz Time division duplexing (TDD) and frequency division duplexing (FDD) applications

The ADTR1107 is a compact, 6 GHz to 18 GHz, front-end IC?with an integrated power amplifier, low noise amplifier (LNA), and a reflective single-pole double-throw (SPDT) switch. These?integrated features make the device ideal for phased array antenna and radar applications. The front-end IC offers 25 dBm of saturated output power (PSAT) and 22?dB small signal gain in?transmit state, and 18 dB small signal gain and 2.5 dB noise figure in receive state. The device has a directional coupler for power detection. The input/outputs (I/Os) are internally matched to 50 ?. The ADTR1107 is supplied in a 5 mm ? 5 mm, 24-terminal, land grid array (LGA) package.Applications Phased array antenna Military radar Weather radar Communication links Electronic warfare

The ADXL204 is a high precision, low power, complete dual-axis accelerometer with signal-conditioned voltage outputs, all on a single monolithic IC. Like the ADXL203, it measures acceleration with a full-scale range of ?1.7 g; however, the ADXL204 is tested and specified for 3.3 V supply voltage, whereas the ADXL203 is tested and specified at 5 V. Both parts function well over a wide 3 V to 6 V operating voltage range. The ADXL204 can measure both dynamic acceleration (for example, vibration) and static acceleration (for example, gravity).The typical noise floor is 170 ?g/?Hz, allowing signals below 2 mg (0.1? of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).The user selects the bandwidth of the accelerometer using Capacitor CX and Capacitor CY at the XOUT and YOUT pins. Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the application.The ADXL204 is available in a 5 mm ? 5 mm ? 2 mm, 8-terminal hermetic LCC package.APPLICATIONS Vehicle dynamic control (VDC)/electronic stability program (ESP) systems Electronic chassis controls Electronic braking Platform stabilization/leveling Navigation Alarms and motion detectors High accuracy, 2-axis tilt sensing

The LTC1286/LTC1298 are micropower, 12-bit, successive approximation sampling A/D converters. They typically draw only 250?A of supply current when converting and automatically power down to a typical supply current of 1nA whenever they are not performing conversions. They are packaged in 8-pin SO packages and operate on 5V to 9V supplies. These 12-bit, switched-capacitor, successive approximation ADCs include sample-and-holds. The LTC1286 has a single differential analog input. The LTC1298 offers a software selectable 2-channel MUX.On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers.These circuits can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages.Applications Battery-Operated Systems Remote Data Acquisition Battery Monitoring Handheld Terminal Interface Temperature Measurement Isolated Data Acquisition

The LT1304 is a micropower step-up DC/DC converter ideal for use in small, low voltage, battery-operated systems. The devices operate from a wide input supply range of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V. Quiescent current, 120?A in active mode, decreases to just 10?A in shutdown with the low-battery detector still active. Peak switch current, internally set at 1A, can be reduced by adding a single resistor from the ILIM pin to ground. The high speed operation of the LT1304 allows the use of small, surface-mountable inductors and capacitors. The LT1304 is available in an 8-lead SO package.Applications 2-, 3-, or 4-Cell to 5V or 3.3V Step-Up Portable Instruments Bar Code Scanners Palmtop Computers Diagnostic Medical Instrumentation Personal Data Communicators/Computers

Demonstration Circuit 1007 is a high efficiency USB power manager with PowerPath™ control and Li-Ion/Polymer battery charger featuring the LTC4088. It includes a synchronous switching input regulator, a full featured battery charger and an ideal diode. Designed specifically for USB applications, the LTC4088’s switching regulator automatically limits its input current to either 100mA, 500mA or 1A for wall-powered applications via logic control. There are also 2.5mA and 500μA suspend modes to prevent the battery from running down when the product is connected to a suspended USB bus. The switching input stage provides power to VOUT where power sharing between the application circuit and the battery charger is managed. Unlike linear PowerPath controllers, the LTC4088’s switching input stage can use nearly all of the 0.5W or 2.5W available from the USB port with minimal power dissipation. This feature allows the LTC4088 to provide more power to the application and battery and eases thermal issues in space constrained applications. An ideal diode ensures that the system power is available from the battery when the input current limit is reached or if the USB or wall supply is removed. The optional external P-channel MOSFET supplements the internal ideal diode by reducing RON and increasing efficiency. A CHRG LED indicates four possible states of the battery charger. Charging is indicated when the LED is steady-ON. Not charging is indicated by a steady-OFF. A NTC fault is indicated by a slow blinking rate (1.5Hz) and a bad battery is indicated by a fast blinking rate (6.1Hz). The LTC4088 is available in the low profile 14-Lead 4mm × 3mm × 0.75mm DFN surface mount package.