DC696A: Demo Board for the LT5546 40MHz to 500MHz VGA and I/Q Demodulator with 17MHz Baseband Bandwidth.

Demonstration circuit 700 is a 2.4MHz, Dual Phase Step-Up DC/DC Converter featuring the LTC3428EDD. The demo board demonstrates a dual phase DC/DC boost converter, with a 2A switch (per phase), capable of providing either 5V at 2A or 3.3V at 1.5A. The circuit demonstrates the advantages of the dual phase architecture for an effective switching frequency of 2.4MHz.

DC708A: Demo Board for the LTC4064 Monolithic Linear Charger for Back-Up Li-Ion Batteries.

The LT3468/LT3468-1/LT3468-2 are highly integrated ICs designed to charge photoflash capacitors in digital and film cameras. A patented control technique* allows for the use of extremely small transformers. Each device contains an on-chip high voltage NPN power switch. Output voltage detection* is completely contained within the device, eliminating the need for any discrete zener diodes or resistors. The output voltage can be adjusted by simply changing the turns ratio of the transformer. The LT3468 has a primary current limit of 1.4A, the LT3468-2 has a 1A limit, and the LT3468-1 has a 0.7A limit. These different current limit levels result in well controlled input currents of 500mA for the LT3468, 375mA for the LT3468-2 and 225mA for the LT3468-1. Aside from the differing current limit, the three devices are otherwise equivalent.The CHARGE pin gives full control of the part to the user. Driving CHARGE low puts the part in shutdown. The DONE pin indicates when the part has completed charging. The LT3468 series of parts are available in tiny low profile (1mm) SOT-23 packages.Applications Digital / Film Camera Flash PDA / Cell Phone Flash Emergency Strobe

The LTC5530 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? package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.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 output buffer gain is set via external resistors. A power saving shutdown mode reduces current to less than 2?A.The LTC5530 operates with input power levels from -32dBm to 10dBm.*Higher frequency operation is achievable with reduced performance. Consult factory for more information.Applications 802.11a, 802.11b, 802.11g, 802.15, 802.16 Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector

Demonstration Circuit 725 is a 7A high efficiency, phase-lockable constant frequency buck converter, incorporating the LTC3415 polyphase monolithic synchronous regulator. The DC725 has an input voltage range of 2.375V to 5.5V and an output voltage range from 0.6V to 5V. The output voltage can be set to 1.2V, 1.5V or 1.8V using the appropriate jumper connection, or it can be set to an adjustable value down to 0.6V, the reference voltage of the LTC3415. The DC725 can deliver high power for a monolithic part (up to 7A of output current) due to the high current power switches (28 mΩ of onstate resistance) of the LTC3415. The LTC3415 can also do polyphase operation, which allows multiple DC725s to be used in parallel for higher current power supplies. Since the parallel LTC3415s can operate out-of-phase, the amount of input and output capacitance required will be minimal.

The LTC3407-2 is a dual, constant frequency, synchronous step down DC/DC converter. Intended for low power applications, it operates from 2.5V to 5.5V input voltage range and has a constant 2.25MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors with a profile ?1.2mm. Each output voltage is adjustable from 0.6V to 5V. Internal synchronous 0.35?, 1.2A power switches provide high efficiency without the need for external Schottky diodes.A user selectable mode input is provided to allow the user to trade-off noise ripple for low power efficiency. Burst Mode? operation provides high efficiency at light loads, while Pulse Skip Mode provides low noise ripple at light loads.To further maximize battery life, the P-channel MOSFETs are turned on continuously in dropout (100% duty cycle), and both channels draw a total quiescent current of only 40?A. In shutdown, the device draws <1?A. IOUT FSW Features LTC3407 2x 600mA 1.5MHz LTC3407-2 2x 800mA 2.25MHz LTC3407-3 2x 800mA 2.25MHz Fixed 1.8V/3.3V LTC3407-4 2x 800mA 2.25MHz Reduce POR Delay LTC3407A 2x 600mA 1.5MHz Low Ripple Burst Mode LTC3407A-2 2x 800mA 2.25MHz Low Ripple Burst Mode APPLICATIONS PDAs/Palmtop PCs Digital Cameras Cellular Phones Portable Media Players PC Cards Wireless and DSL Modems

The ADF4159 is a 13 GHz, fractional-N frequency synthesizer with modulation and both fast and slow waveform generation capability. The part uses a 25-bit fixed modulus, allowing subhertz frequency resolution.The ADF4159 consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. The ?-?-based fractional interpolator allows programmable fractional-N division. The INT and FRAC registers define an overall N divider as N = INT + (FRAC/225).The ADF4159 can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation. Frequency sweep modes are also available to generate various waveforms in the frequency domain, for example, sawtooth and triangular waveforms. Sweeps can be set to run automatically, or each step manually triggered by an external pulse. The ADF4159 features cycle slip reduction circuitry, which enables faster lock times without the need for modifications to the loop filter.Control of all on-chip registers is via a simple 3-wire interface. The ADF4159 operates with an analog power supply in the range of 2.7 V to 3.45 V and a digital power supply in the range of 1.62 V to 1.98 V. The device can be powered down when not in use.ApplicationsCommunications infrastructureCommunications test equipmentInstrumentationFMCW radars

The ADF4360-1 is a fully integrated integer-N synthesizer andvoltage controlled oscillator (VCO). The ADF4360-1 is designed for a center frequency of 2250 MHz. In addition, there is a divide-by-2 option available, whereby the user gets an RF output of between 1025 MHz and 1225 MHz. Control of all the on-chip registers is through a simple 3-wire interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use.?

The ADF4360-9 is an integrated integer-N synthesizer and voltage controlled oscillator (VCO). The ADF4360-9 center frequency is set by external inductors. This allows a VCO frequency range of between65 MHz and 400 MHz. An additional divider stage allows division of the VCO signal. The CMOS level output is equivalent to the VCO signal divided by integer value between 2 and 31. This divided signal can be further divided by two if desired. Control of all the on-chip registers is through a simple 3-wire interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use.Applications System clock generation Test equipment Wireless LANs CATV equipment Data Sheet, Rev. A, 3/08