The ADP150 is an ultralow noise (9 ?V), low dropout, linear regulator that operates from 2.2 V to 5.5 V and provides up to 150 mA of output current. The low 105 mV dropout voltage at 150 mA load improves efficiency and allows operation over a wide input voltage range.Using an innovative circuit topology, the ADP150 achieves ultralow noise performance without the necessity of an additional noise bypass capacitor, making it ideal for noise sensitive analog and RF applications. The ADP150 also achieves ultralow noise performance without compromising PSRR or line and load transient performance. The ADP150 offers the best combination of ultralow noise and quiescent current consumption to maximize battery life in portable applications.The ADP150 is specifically designed for stable operation with tiny 1 ?F ? 30% ceramic input and output capacitors to meet the requirements of high performance, space-constrained applications.The ADP150 is available in 14 fixed output voltage options, ranging from 1.8 V to 3.3 V.Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP150 is available in tiny 5-lead TSOT and 4-ball, 0.4 mm pitch WLCSP packages for the smallest footprint solution to meet a variety of portable power applications.Applications Mobile phones Digital camera and audio devices Portable and battery-powered equipment Post dc-to-dc regulation Portable medical devices RF, PLL, VCO, and clock power supplies

The ADP160 / ADP161 / ADP162 / ADP163?are ultralow quiescentcurrent, low dropout, linear regulators that operate from 2.2 Vto 5.5 V and provide up to 150 mA of output current. The low195 mV dropout voltage at 150 mA load improves efficiency andallows operation over a wide input voltage range.The ADP16x are specifically designed for stable operation withtiny 1 ?F ? 30% ceramic input and output capacitors to meetthe requirements of high performance, space-constrainedapplications.The ADP160 is available in 15 fixed output voltage options,ranging from 1.2 V to 4.2 V. The ADP160 / ADP161 also includea switched resistor to discharge the output automatically when the LDO is disabled. The ADP162 is identical to the ADP160but does not include the output discharge function.The ADP161and ADP163 are available as a adjustable outputvoltage regulators. They are only available in a 5-lead TSOTpackage. The ADP163 is identical to the ADP161 but does notinclude the output discharge function.Short-circuit and thermal overload protection circuits preventdamage in adverse conditions. The ADP160 and ADP162 areavailable in a tiny 5-lead TSOT and a 4-ball, 0.5 mm pitchWLCSP package for the smallest footprint solution to meet avariety of portable power applications.APPLICATIONS Mobile phones Digital cameras and audio devices Portable and battery-powered equipment Post dc-to-dc regulation Portable medical devices

The AD9644 is a dual, 14-bit, analog-to-digital converter (ADC) with a high speed serial output interface and sampling speeds of either 80 MSPS or 155 MSPS.The AD9644 is designed to support communications appli-cations where high performance, combined with low cost, small size, and versatility, is desired. The JESD204A high speed serial interface reduces board routing requirements and lowers pin count requirements for the receiving device.The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth differential sample-and-hold analog input amplifiers that support a variety of user-selectable input ranges. An integrated voltage reference eases design consid-erations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.By default, the ADC output data is routed directly to the two external JESD204A serial output ports. These outputs are at CML voltage levels. Two modes are supported such that output coded data is either sent through one data link or two. (L = 1; F = 4 or L = 2; F = 2). Independent synchronization inputs (DSYNC) are provided for each channel.Flexible power-down options allow significant power savings, when desired.Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.The AD9644 is available in a 48-lead LFCSP and is specified over the industrial temperature range of ?40?C to +85?C.This product is protected by a U.S. patent.Applications Communications Diversity radio systems Multimode digital receivers (3G and 4G) GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA I/Q demodulation systems Smart antenna systems General-purpose software radios Broadband data applications Ultrasound equipmentProduct Highlights An on-chip PLL allows users to provide a single ADC sampling clock; the PLL multiplies the ADC sampling clock to produce the corresponding data rate clock. The configurable JESD204A output block supports up to 1.6 Gbps per channel data rate when using a dedicated data link per ADC or 3.2 Gbps data rate when using a single shared data link for both ADCs. Proprietary differential input that maintains excellent SNR performance for input frequencies up to 250 MHz. Operation from a single 1.8 V power supply. Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, test modes, voltage reference mode, and serial output configuration.

The ADP2503 /?ADP2504 are high efficiency, low quiescent current step-up/step-down dc-to-dc converters that can operate at input voltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous rectifiers are internal to minimize external part count. At high load currents, the ADP2503 / ADP2504 use a current-mode, fixed frequency pulse-width modulation (PWM) control scheme for optimal stability and transient response. To ensure the longest battery life in portable applications, the ADP2503 / ADP2504 have an optional power save mode that reduces the switching frequency under light load conditions. For wireless and other low noise applications where variable frequency power save mode may cause interference, the logic control input sync forces fixed frequency PWM operation under all load conditions.The ADP2503 / ADP2504 can run from input voltages between 2.3 V and 5.5 V, allowing single lithium or lithium polymer cell, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources. The ADP2503 / ADP2504 have fixed output options, or using the adjustable model, the output voltage can be programmed through an external resistor divider. Compensation is internal to minimize the number of external components.During logic-controlled shutdown, the input is disconnected from the output and draws less than 1 ?A from the input source. Operating as boost converters, the ADP2503 / ADP2504 feature a true load disconnect function that isolates the load from the power source. Other key features include undervoltage lockout to prevent deep battery discharge, and soft start to prevent input current overshoot at startup.APPLICATIONS Wireless handsets Digital cameras/portable audio players Miniature hard disk power supplies USB powered devices

The HMC6545 is a low power, high performance, fullyprogrammable, dual-channel, asynchronous advanced linear equalizer that operates at data rates of up to 32 Gbps. The HMC6545 is protocol and data rate agnostic, and it can operateon the transmit path to predistort a transmitted signal to invert channel distortion or on the receiver path to equalize the distorted and attenuated received signal. The HMC6545 iseffective in dealing with chromatic and polarization modedispersion and intersymbol interference (ISI) caused by a widevariety of transmission media (backplane or fiber) and channel lengths.The HMC6545 consists of an automatic gain control (AGC);dc offset correction circuitry; a 9-tap, 18 ps spaced feedforward equalizer (FFE); a summing node; and a linear programmableoutput driver. The input AGC linearly attenuates or amplifiesthe distorted input signal to generate a constant voltage at theinput of the FFE. The 9-tap FFE is programmed via 2-wire interface to generate wide range frequency responses that are precursor or postcursor in nature for compensating signal impairments. After FFE tap coefficients are summed at thesumming node, the signal is received by a linear output driver.DC offset correction circuitry is controlled either automatically or manually via Forward Error Correction (FEC).All high speed differential inputs and outputs of the HMC6545 arecurrent mode logic (CML) and terminated on chip with 50 ? tothe positive supply, 3.3 V, and can be dc-coupled or ac-coupled. The inputs and outputs of the HMC6545 can be operated eitherdifferentially or single-ended. The low power, high performance, and feature rich HMC6545 is packaged in a 5 mm ? 5 mm,32-lead LFCSP package. The device uses a single 3.3 V supply,eliminating external regulators. The HMC6545 operates over a?40?C to +95?C temperature range.Applications 40 Gbps/100 Gbps DQPSK direct detection receivers Short and long reach CFP2 and QSFP+ modules CEI-28G MR and CEI-25G LR 100 GE line cards 16 Gbps and 32 Gbps Fibre Channel Infiniband 14 Gbps FDR and 28 Gbps EDR rates Signal conditioning for backplane and line cards Broadband test and measurement equipment

The HMC703 fractional synthesizer is built upon the high performance PLL platform also contained in the HMC704 and Hittite?s latest generation of PLL+VCO products. This platform has the best phase-noise and spurious performance in the industry - enabling higher order modulation schemes while minimizing blocker effects in high performance radios.In addition, the HMC703 offers frequency sweep and modulation features, external triggering, double-buffering, exact frequency control, phase modulation and more - while maintaining pin compatibility for the main functions with the HMC700.Applications Microwave Point-to-Point Radios? Base Stations for Mobile Radio (GSM, PCS, DCS, CDMA, WCDMA) Wireless LANs, WiMAX Communications Test Equipment ATV Equipment Automotive Sensors AESA - Phased Arrays FMCW Radar Systems

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