Demonstration circuit 943 is a complete power controller for a USB power device. It features the LTC6047 and provides a full-featured 1.25A linear lithium-ion CC/CV battery charger with timer termination and 4.2V charge voltage, a USB power manager, and a PowerPath manager for the battery. The USB input voltage range is 4.35V to 5.5V and the wall adapter input is 4.35V to 6V. It also features a programmable 1.5A input current limit that can be set at 500mA or 100mA for USB applications. The wall adapter input has overvoltage protection up to 13V. An external MOSFET disconnects the wall adapter when the voltage exceeds 6V.

The LTC7124 is a dual channel, 3.5A per output, high efficiency monolithic step-down regulator capable of operating from input supplies up to 17V. The programmable switching frequency ranges from 500kHz to 4MHz with a ?25% external clock synchronization capability around the programmed frequency. The regulator features ultralow quiescent current for high efficiency over a wide VOUT range.The step-down regulator operates from an input voltage range of 3.1V to 17V and provides an adjustable output range from 0.6V to 99% of VIN while delivering up to 3.5A of output current per channel. A user selectable mode input is provided to allow the user to trade off output ripple for light load efficiency; Burst Mode? operation provides the highest efficiency at light loads, while forced continuous operation provides the lowest output ripple. The LTC7124 includes spread spectrum modulation for low radiated and conductive noise. The LTC7124 is offered in a thermally enhanced, low profile 24-lead 3mm ? 5mm QFN package.Applications Battery Powered Systems Point-of-Load Supplies Portable Instruments Handheld Scanners

Demonstration circuit 2322A is designed for evaluation of the LTC5576 active upconverting mixer with very wide input bandwidth and low distortion. Its OUT port is optimized for 4GHz to 6GHz applications, but is easily retuned for output frequencies as low as 3GHz, or as high as 8GHz with minor performance degradation. The IN port is optimized for 30MHz to 6GHz operation while the LO port is always 50Ω matched from 1GHz to 8GHz.

The HMC892ALP5E is a tunable band-pass filter that features auser selectable pass-band frequency. The 3 dB filter bandwidth isapproximately 8.7%. The 20 dB filter bandwidth is approximately23.8%. The center frequency can be varied between 3.45 GHzand 6.25 GHz by applying an analog tuning voltage between 0 Vand 14 V.This tunable filter can be used as a smaller alternative tophysically large switched filter banks and cavity tuned filters.The HMC892ALP5E has excellent microphonics due to themonolithic design and provides a dynamically adjustablesolution in advanced communications applications. Applications Test and measurement equipment Military radar and electronic warfare (EW)/electronic countermeasures (ECM) Satellite communications (SATCOM) and space Industrial and medical equipment

The AD5161 provides a compact 3 mm ? 4.9 mm packagedsolution for 256-position adjustment applications. Thesedevices perform the same electronic adjustment function asmechanical potentiometers or variable resistors, with enhancedresolution, solid-state reliability, and superior low temperaturecoefficient performance.The wiper settings are controllable through a pin selectable SPIor I2C compatible digital interface, which can also be used toread back the wiper register content. When the SPI mode isused, the device can be daisy-chained (SDO to SDI), allowingseveral parts to share the same control lines. In the I2C mode, address pin AD0 can be used to place up to two devices on thesame bus. In this same mode, command bits are available toreset the wiper position to midscale or to shut down the deviceinto a state of zero power consumption.Operating from a 2.7 V to 5.5 V power supply and consumingless than 5 ?A allows for usage in portable battery-operatedapplications.APPLICATIONS Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Gain control and offset adjustment?

The ADXL335 is a small, thin, low power, complete 3-axisaccelerometer with signal conditioned voltage outputs. Theproduct measures acceleration with a minimum full-scale rangeof ?3 g. It can measure the static acceleration of gravity in tiltsensingapplications, as well as dynamic acceleration resultingfrom motion, shock, or vibration.The user selects the bandwidth of the accelerometer using theCX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins.Bandwidths can be selected to suit the application, with arange of 0.5 Hz to 1600 Hz for X and Y axes, and a range of0.5 Hz to 550 Hz for the Z axis.The ADXL335 is available in a small, low profile, 4 mm ? 4 mm? 1.45 mm, 16-lead, plastic lead frame chip scale package(LFCSP_LQ).APPLICATIONS Cost sensitive, low power, motion- and tilt-sensing applications Mobile devices Gaming systems Disk drive protection Image stabilization Sports and health devices

The AD8370 is a high performance, digitally controlled variable gain amplifier, designed to be used at IF frequencies within communication infrastructure equipment.The part provides two gain control ranges that are controlled through a three wire digital interface, and allow the user to attain fine gain control for maximum receiver sensitivity.The AD8370 has been fully specified for operation at common wireless IF frequencies 70 / 140 / 190 / 240 / 380MHz. The high output compression and fine gain control adjustability makes the AD8370 an ideal choice for to be used within digital receiver AGC circuits for GSM / CDMA2000 / W-CDMA cellular base stations.The AD8370 is fabricated on an advanced silicon bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 16-lead thin shrunk small outline (TSSOP) package and fully specified over the ?40 to +85 C temperature range. AvailabilitySamples AD8370ARU and an evaluation boards AD8370-EVAL are available.Other Wireless VGA products:AD8367 - 45dB, 500MHz Single Ended, Analog Controlled VGAAD8369 ? 45dB, 600MHz Differential, 3dB Step Digitally Controlled VGA

The SSM6515 is a fully integrated, high efficiency, mono Class-D audio amplifier with digital input that is ideally suited for use in wireless headphones. The application circuit requires few external components and operates from a 1.8 V (PVDD) supply and a 1.2 V to 1.8 V (IOVDD) supply. With 1.8 V signaling, these can be shared. It can deliver 85 mW of continuous output power into a 16 ? load with 90% efficiency at 55 mW into a 16 ? load and it has a signal-to-noise ratio (SNR) of 113 dB, A weighted. Spread spectrum, stable common-mode pulse density modulation provides a much lower electromagnetic interference (EMI) radiated emissions compared with other Class-D architectures.The digital input eliminates the need of an external digital-to-analog converter (DAC). The SSM6515 has a micropower shutdown mode with a typical shutdown current of 6 ?A at the 1.8 V PVDD supply and can automatically power down with no input. The device also includes pop and click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off. Inputs support various serial audio formats, including I2S, time division multiplexing (TDM), and pulse density modulation (PDM).The SSM6515 is designed to operate with an I2C control interface or in standalone mode and specified over the temperature range of ?40?C to +85?C. The device has built-in output short-circuit protection. The SSM6515 is available in a halide free, 11-ball, 0.984 mm ? 1.444 mm, 0.35 mm pitch wafer-level chip scale package (WLCSP).APPLICATIONS Wireless headphones Active noise canceling headphones Smartphone earpiece speakers Hearing assistance devices Portable electronics

The ADP5071 is a dual high performance dc-to-dc regulator that generates independently regulated positive and negative rails.The input voltage range of 2.85 V to 15 V supports a wide variety of applications. The integrated main switch in both regulators enables generation of an adjustable positive output voltage up to +39 V and a negative output voltage down to ?39 V below input voltage.The ADP5071 operates at a pin selected 1.2 MHz/2.4 MHz switching frequency. The ADP5071 can synchronize with an external oscillator from 1.0 MHz to 2.6 MHz to ease noise filtering in sensitive applications. Both regulators implement programmable slew rate control circuitry for the MOSFET driver stage to reduce electromagnetic interference (EMI).Flexible start-up sequencing is provided with the options of manual enable, simultaneous mode, positive supply first, and negative supply first.The ADP5071 includes a fixed internal or resistor programmable soft start timer to prevent inrush current at power-up. During shutdown, both regulators completely disconnect the loads from the input supply to provide a true shutdown.Other key safety features in the ADP5071 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).The ADP5071 is available in a 20-lead LFCSP or in a 20-lead TSSOP and is rated for a ?40?C to +125?C junction temperature range.Applications Bipolar amplifiers, ADCs, DACs, and multiplexers Charge-coupled device (CCD) bias supply Optical module supply RF power amplifier (PA) bias

The LTC6401-20 is a high-speed differential amplifier targeted at processing signals from DC to 140MHz. The part has been specifically designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also be used as a general-purpose broadband gain block.The LTC6401-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs, which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).The LTC6401-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6401-20 is packaged in a compact 16-lead 3mm ? 3mm QFN package and operates over the ?40?C to 85?C temperature range.Applications Differential ADC Driver Differential Driver/Receiver Single Ended to Differential Conversion IF Sampling Receivers SAW Filter Interfacing