The LTC3620 is a high efficiency, synchronous buck regulator, suitable for very low power, very small footprint applications powered by a single Li-Ion battery.The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported by the 0.6V feedback reference voltage. The LTC3620-1 option is internally programmed to provide a 1.1V output.The LTC3620 uses a unique variable frequency architecture to minimize power loss and achieve high efficiency. The switching frequency is proportional to the load current, and an internal frequency clamp forces a minimum switching frequency at light loads to minimize noise in the audio range. The user can program the frequency of this clamp by applying an external clock to the FMIN/MODE pin.The battery status output, LOBATB, indicates when the input voltage drops below 3V. To help prevent damage to the battery, an undervoltage lockout (UVLO) circuit shuts down the part if the input voltage falls below 2.8V.The LTC3620 is available in a low profile, 2mm ? 2mm 8-lead DFN package.Applications Hearing Aids Wireless Headsets Li-Ion Cell Applications Button Cell Replacement

DC1504A: Demo Board for the LT4180 Virtual Remote Sense Controller.

DC1524A-A: Demo Board for the LTC5588-1 200MHz to 6000MHz Quadrature Modulator with Ultrahigh OIP3.

DC1532A-E: Demo Board for the LTC2264-14 14-Bit, 40Msps Low Power Dual ADCs.

The LTC2313-14 is a 14-bit, 2.5Msps, serial sampling A/D converter that draws only 5mA from a single 3V or 5V supply. The LTC2313-14 contains an integrated low drift reference and reference buffer providing a low cost, high performance (20ppm/?C maximum) and space saving solution. The LTC2313-14 achieves outstanding AC performance of 77dB SINAD and ?85dB THD while sampling at 2.5Msps. The extremely high sample rate-topower ratio makes the LTC2313-14 ideal for compact, low power, high speed systems. The supply current decreases at lower sampling rates as the device automatically enters nap mode after conversions.The LTC2313-14 has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3V and 5V logic. The fast 2.5Msps throughput with no cycle latency makes the LTC2313-14 ideally suited for a wide variety of high speed applications.? Bits LTC2313-12 12 LTC2313-14 14 Applications Communication Systems High Speed Data Acquisition Handheld Terminal Interface Medical Imaging Uninterrupted Power Supplies Battery Operated Systems Automotive

Demonstration circuit 1585A is an adjustable 3A linear regulator featuring the LT3083 in the DD-PAK-5 package. Architected as a precision current source and voltage follower, the LT3083 can be used in many applications requiring high current, adjustability to zero output, and no heat sink. Internal protection circuitry includes current limiting and thermal limiting.The device brings out the collector of the pass transistor to allow low dropout operation when used with multiple supplies. The demo board oprerates with an input supply voltage range of 1.7V to 23V. A control voltage bias supply that is 1.2V to 1.4V higher than the input voltage is required for proper regulation. A key feature of the LT3083 is its wide output voltage range. The DC1585A's jumper-selectable output voltage can be set to 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5.0V, or a user-selectable value. DC1585A can be used as a high current linear regulator, a post regulator for switching supplies, a variable voltage supply or a low output voltage power supply.

DC1589A: Demo Board for the LTC4425 Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor.

DC1620A-L: Demo Board for LTC2140-14 14-Bit, 25Msps Low Power Dual ADCs.

The LTC5564 is a precision, RF power detector for applications in the 600MHz to 15GHz frequency range. The LTC5564 operates with input power levels from ?24dBm to 16dBm.A temperature compensated Schottky diode peak detector, gain-selectable operational amplifier, and fast comparator are combined in a small 16-lead 3mm ? 3mm QFN package.The RF input signal is peak detected and then sensed by both a comparator and amplifier. The comparator provides a 9ns response time to input levels exceeding VREF along with a latch enable/disable function. The gain selectable operational amplifier provides a 350V/?s slew rate and 75MHz of demodulation bandwidth to the analog output.VOUTADJ and VREF pins allow for the adjustment of VOUT offset and VCOMP switch point voltages, respectively.Applications RF Signal Presence Detectors for: 802.11a, 802.11b,?802.11g, 802.15, Optical Data Links, Wireless Data?Modems, Wireless and Cable Infrastructure 5.8GHz ISM Band Radios MMDS Microwave Links PA Power Supply Envelope Tracking Control Fast Alarm RF Power Monitor Envelope Detector Ultra-Wideband Radio Radar Detector

Demonstration circuit 1678A features the LTC2654 Quad 16-bit/12-bit DAC. The LTC2654 is a family of 16-bit/12-bit rail-to-rail DACs with integrated 10ppm/°C maximum reference. The LTC2654 advances performance standards for output drive, crosstalk and load regulation in single supply, voltage-output multiple DACs.