DC579A: Demo Board for LTC2600 Octal 16-Bit Rail-to-Rail DACs in 16-Lead SSOP.

The LTC2051/LTC2052 are dual/quad zero-drift operational amplifiers available in the MS8 and SO-8/GN16 and S14 packages. For space limited applications, the LTC2051 is available in a 3mm ? 3mm ? 0.8mm dual fine pitch leadless package (DFN). They operate from a single 2.7V supply and support ?5V applications. The current consumption is 750?A per op amp.The LTC2051/LTC2052, despite their miniature size, feature uncompromising DC performance. The typical input offset voltage and offset drift are 0.5?V and 10nV/?C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB.The input common mode voltage ranges from the negative supply up to typically 1V from the positive supply. The LTC2051/LTC2052 also have an enhanced output stage capable of driving loads as low as 2k? to both supply rails. The open-loop gain is typically 140dB. The LTC2051/ LTC2052 also feature a 1.5?VP-P DC to 10Hz noise and a 3MHz gain-bandwidth product.Applications Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters Low Side Current Sense

The LTC3722-1/LTC3722-2 phase-shift PWM controllers provide all of the control and protection functions necessary to implement a high efficiency, zero voltage switched (ZVS), full bridge power converter. Adaptive ZVS circuitry delays the turn-on signals for each MOSFET independent of internal and external component tolerances. Manual delay set mode enables secondary side control operation or direct control of switch turn-on delays. The LTC3722-1/LTC3722-2 feature adjustable synchronous rectifier timing for optimal efficiency. A UVLO program input provides accurate system turn-on and turn-off voltages. The LTC3722-1 features peak current mode control with programmable slope compensation and leading edge blanking, while the LTC3722-2 employs voltage mode control. The LTC3722-1/LTC3722-2 feature extremely low operating and start-up currents. Both devices include a full range of protection features and are available in the 24-pin surface mount GN package.Applications Telecommunications, Infrastructure Power Systems Distributed Power Architectures Server Power Supplies

DC610A Demo Board for: LTC1693 High Speed Single/Dual N-Channel MOSFET Drivers LT3804 Secondary Side Dual Output Controller with Opto Driver LT3781 Bootstrap Start Dual Transistor Synchronous Forward Controller

Demonstration circuit 621 is a 1.25MHz triple DC/DC switching converter using the LT1941. The LT1941 has two step-down converters and a third boost/inverting converter that can also be configured as a SEPIC or Cuk (inverting). The LT1941 has a wide 3.5V to 25V input voltage range; the demo board limits this range from 4.7V to 14V and is configured to provide 1.8V @ 2.4A, 3.3V @ 1.4A and –12V @ up to 550mA (depending on VIN).

DC623A: Demo Board for the LTC3801 Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT.

The LT3469 is a transconductance (gm) amplifier that can drive outputs up to 33V from a 5V or 12V supply. An internal switching regulator generates a boosted supply voltage for the gm amplifier. The amplifier can drive capacitive loads in the range of 5nF to 300nF. Slew rate is limited only by the maximum output current. The 35V output voltage capability of the switching regulator, along with the high supply voltage of the amplifier, combine to allow the wide output voltage range needed to drive a piezoceramic microactuator.The LT3469 switching regulator switches at 1.3MHz, allowing the use of tiny external components. The output capacitor can be as small as 0.22?F, saving space and cost versus alternative solutions.The LT3469 is available in a low profile ThinSOT? package.Applications Piezo Speakers Piezo Microactuators Varactor Bias

The LTC3202 is a low noise, constant frequency charge pump DC/DC converter that uses fractional conversion to increase efficiency in white LED applications. The part can be used to produce a regulated voltage or current of up to 125mA from a 2.7V to 4.5V input. Low external parts count (two flying capacitors and two small bypass capacitors at VIN and VOUT) make the LTC3202 ideally suited for small, battery-powered applications.An internal 2-bit DAC allows LED current to be adjusted for LED brightness control. The LTC3202 also has thermal shutdown protection and can survive a continuous short-circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small external capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1?A.The LTC3202 is available in the 10-pin MSOP and 3mm x 3mm DFN packages.Applications White LED Backlighting Programmable Boost Current Source?

Demonstration circuit 649 is a Telecom isolated DC/DC converter featuring the LTC3803 constant frequency current mode flyback controller. The DC649 converts an isolated 36V to 72V input and provides 2A of output current at 5V. The 200kHz constant frequency operation is maintained down to very light load to reduce low frequency noise generated over a wide range of load current. The converter provides high output voltage accuracy (typically ±2%) over wide load range with no minimum load requirement.

The LTC3412A is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 3A of output current. The internal synchronous power switch with 77m? on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The LTC3412A can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference while Burst Mode operation provides high efficiency by reducing gate charge losses at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the application requirements.APPLICATIONS Point-of-Load Regulation Notebook Computers Portable Instruments Distributed Power Systems

The LTC5532 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small ThinSOT? or (2mm x 2mm) DFN package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3x NiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUT pin.The LTC5532 output buffer gain is set via external resistors. The initial starting voltage of 120mV ?35mV can be precisely adjusted using the VOS pin.The LTC5532 operates with RF input power levels from ?32dBm to 10dBmApplications 802.11a, 802.11b, 802.11g, 802.15 Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector

Demonstration Circuit 658 is a complete power management system using the LTC3456 for portable applications powered by a wall adapter, a USB port or a 2-cell alkaline battery, in that order of priority. DC658 provides three outputs: a 1.8V, 200mA core supply, a 3.3V, 150mA main supply, and a 3.3V, 50mA Hot Swap supply. All outputs are discharged to ground during shutdown. The synchronous buck (1.8V output) and the second converter (which operates as a buck or a boost depending on the power source, and provides 3.3V @ 150mA and 3.3V @ 50mA outputs) accept a 2V to 3.2V battery input or USB/Wall adapter input.

The LTC1844 Series are low noise VLDO? (very low dropout) linear regulators designed for low power/portable applications. These regulators can operate from input voltages as low as 1.6V. Typical output noise is only 30?VRMS and typical dropout for the LTC1844-3.3 is just 90mV at the maximum load current of 150mA, reducing to 30mV at 50mA.The internal P-channel MOSFET pass transistor requires no base current, allowing the device to draw only 35?A during normal operation, independent of the dropout voltage and load current. The quiescent current falls to a negligible 10nA during shutdown.Other features include high output voltage accuracy, excellent transient response, stability with ultralow ESR ceramic capacitors as small as 1?F, reverse-battery and reverse-current protection, short-circuit and thermal overload protection and output current limiting.The LTC1844 regulators are available in a low profile (1mm) SOT-23 (ThinSOT?) package.Applications Portable Instruments and Battery-Powered Systems Bluetooth/802.11 Cards Cellular Phones PDAs and Notebook Computers

The HMC213BMS8E is an ultraminiature double balanced mixer in a plastic, 8-lead mini small outline package (MSOP). This passive monolithic microwave integrated circuit (MMIC) mixer is constructed of gallium arsenide (GaAs) Schottky diodes and novel planar transformer baluns on the chip. The device can be used as an upconverter, downconverter, biphase demodulator or modulator, or phase comparator. The consistent MMIC performance improves system operation and ensures regulatory compliance.Applications Base stations Personal Computer Memory Card International Association (PCMCIA) transceivers Wireless local loops

The HMC270AMS8GE are broad-band non-reflectiveGaAs SPDT switches in 8 lead MSOP grounded basesurface mount plastic packages. Covering DC to 8GHz, the switch offers excellent isolation from 70 to35 dB. The negative control voltage of -5 volts allowsoperation down to DC. If positive control is requiredalong with high isolation, see the DC to 3.5 GHzHMC284AMS8GE non-reflective SPDT.APPLICATIONSThe HMC270AMS8GE is ideal for DC - 8.0 GHz applications: CATV MMDS and wireless LAN Wireless local loop

The HMC345ALP3E is a broadband non-reflective GaAs MESFET SP4T switch in a low cost leadless surface mount packages. Covering DC to 8 GHz, this switch offers high isolation and low insertion loss. This switch also includes an on board binary decoder circuit which reduces the required logic control lines to two. The switch operates using a positive control voltage of 0/+5V, and requires a fixed bias of +5V.* Blocking capacitors are required at ports RFC and RF1, 2, 3, & 4. Their value will determine the lowest transmission frequency.APPLICATIONSThis switch is suitable for usage in DC - 8.0 GHz 50-Ohm or 75-Ohm systems: Broadband Fiber Optics Switched Filter Banks Wireless below 8 GHz

The HMC3716LP4E is a digital phase frequency detector which operates from 10 to 1300MHz. It is intended for usein low phase noise synthesizer applications.The combination of high frequency of operation along with its ultra low phase noise floor make possible synthesizerswith wide loop bandwidth and low N resulting in fast switching and very low phase noise. When used in conjunctionwith a differential loop amplifier, the HMC3716LP4E generates output voltages that can be used to phase lock a VCOto a reference oscillator.The device is packaged in a 24-pin, 4 x 4mm leadless QFN surface mount package with an exposed ground paddlefor improved RF and thermal performance.Applications Point-to-point radios Satellite communication systems Military applications Sonet clock generation

The HMC539ALP3/539ALP3E is a broadband5-bit GaAs IC digital attenuator in a low cost leadless surface mount package. This single positive control line per bit digital attenuator utilizes an offchip AC ground capacitor for near DC operation,making it suitable for a wide variety of RF and IFapplications. Covering DC to 4 GHz, the insertion loss is less than 0.7 dB typical. The attenuatorbit values are 0.25 (LSB), 0.5, 1, 2, and 4 dB for atotal attenuation of 7.75 dB. Attenuation accuracy isexcellent at ? 0.05 dB typical step error. The attenu-ator also features a high IIP3 of +62 dBm. Five TTL/CMOS control inputs are used to select each attenuation state. A single Vdd bias of +3V to +5V is required.Applications Cellular infrastructure ISM, MMDS, WLAN, WiMAX, WiBro Microwave radio and VSAT Test equipment and sensors

The HMC540SLP3E is a broadband 4-bit Silicon IC digital attenuator in a low cost leadless surface mount package. This single positive control line per bit digital attenuator utilizes off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering 0.1 to 8 GHz, the insertion loss is less than 1 dB typical. The attenuator bit values are 1 (LSB), 2, 4 and 8 dB for a total attenuation of 15 dB. Attenuation accuracy is excellent at ? 0.2 dB typical step error. The attenuator also features a IIP3 of +56dBm. Four TTL/CMOS control inputs are used to select each attenuation state. It can operate with a single Vdd ranging from +3.3V to 5V.APPLICATIONS Cellular Infrastructure ISM, MMDS, WLAN, WiMAX, WiBro Microwave Radio & VSAT Test Equipment and Sensors

The HMC574AMS8E is low-cost SPDT switchin 8-lead MSOP packages for use in transmit/receive applications which requires very lowdistortion at high incident power levels. Thedevice can control signals from DC to 3 GHz andis especially suited for Cellular/3G infrastructure,WiMAX and WiBro applications with only 0.3 dBtypical insertion loss. The design provides 5 wattpower handling performance and +63 dBm thirdorder intercept at +8 Volt bias. RF1 and RF2 arereflective shorts when ?Off.?Applications Cellular/3G infrastructure Private mobile radio handsets WLAN, WiMAX and WiBro Automotive telematics Test equipment