The LTC2446/LTC2447 4-terminal switching enables multiplexed ratiometric measurements. Four sets of selectable differential inputs coupled with four sets of differential reference inputs allow multiple RTDs, bridges and other sensors to be digitized by a single converter. A fifth differential reference input can be selected for any input channel not requiring ratiometric measurements (thermocouples, voltages, current sense, etc.). The flexible input multiplexer allows single-ended or differential inputs coupled with a slaved reference input or a universal reference input.A proprietary delta-sigma architecture results in absolute accuracy (offset, full-scale, linearity) of 15ppm, noise as low as 200nVRMS and speeds as high as 8kHz. Through a simple 4-wire interface, ten speed/resolution combinations can be selected. The first conversion following a speed, resolution, channel change or reference change is valid since there is no settling time between conversions, enabling scan rates of up to 4kHz. Additionally, a 2x mode can be selected for any speed-enabling output rates up to 8kHz with one cycle of latency.Protected by U.S. Patents, including 6140950, 6169506, 6208279, 6411242, 6639526Applications Flow Weight Scales Pressure Direct Temperature Measurement Gas Chromatography

Demonstration circuit 850A is a Boost LED Driver featuring the LTC3783 a boost/SEPIC/flyback LED driver controller. The demo board requires a 3V to 14.4V input and provides 360mA LED current at up to 25V. It incorporates an output overvoltage protection feature to limit output voltage to less than 27V if the LED string is inadvertently disconnected. The LT3783 features 1000:1 PWM dimming for brightness control and analog dimming control.

The LTC2298/LTC2297/LTC2296 are 14-bit 65Msps/40Msps/25Msps, low power dual 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2298/LTC2297/LTC2296 are perfect for demanding imaging and communications applications with AC performance that includes 74.3dB SNR and 90dB SFDR for signals at the Nyquist frequency.DC specs include ?1.2LSB INL (typ), ?0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1LSBRMS.A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V logic. An optional multiplexer allows both channels to share a digital output bus.A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.Applications Wireless and Wired Broadband Communication Imaging Systems Spectral Analysis Portable Instrumentation

DC851A-F: Demo Board for the LTC2299 Dual 14-Bit, 80Msps Low Power 3V ADC.

DC851A-K: Demo Board for the LTC2291 Dual 12-Bit, 25Msps Low Power 3V ADCs.

Demonstration circuit 862 is a micropower regulated charge pump DC/DC converter featuring the 60mA output LTC3221 in a 2mm × 2mm DFN package. It comes in three assembly versions, DC862A-A, DC862A-B and DC862A-C, featuring the LTC3221EDC-3.3 (fixed 3.3V output), the LTC3221EDC-5 (fixed 5V output) , and LTC3221EDC (adjustable output set to 3V), respectively. The demo board input voltage range depends on the IC used; for the adjustable output DC862A-C, the input voltage range is 1.8V to 3.8V. The LTC3221's low 8µA no-load quiescent current is even lower than the self-discharging current of many batteries. By employing a constant current to charge the output, the output ripple is low even at high input and light load, and is fairly constant over the full input voltage range.

DC872A: Demo Board for the LTC4213 No RSENSE Electronic Circuit Breaker.

Demonstration circuit 886 is an ultralow input voltage and dropout voltage supply using the 300mA output current LTC3035 linear regulator, which comes in a very small 8-pin 3mm × 2mm DFN package. The DC886 has an input voltage range from 1.7V to 5.5V and jumper selectable output voltages of 2.5V/3.3V/5V or a user-determined value.  Due to the 0.4V reference of the LTC3035, the DC886 is capable of supplying power to very low voltage applications, such as a (relatively) high current voltage references. The DC886 comes assembled with small 1uF ceramic capacitors to demonstrate the LTC3035's ability to  maintain stability with ceramic output capacitors.

Demonstration circuit 897 is a monolithic step-down DC/DC swithcing regulator featureing the LT3493. The demo board is designed to provide 3.3V @ 1.2A  from a 4.5V to 36V input. Other features of the LT3493 include a fixed 750kHz switching frequency and Internal compenation

SmartMesh WirelessHART networks are populated by motes, the nodes on the network. Based on the Dust® break-through Eterna® technology, the motes are ultralow power, extending battery life to years and many times that of alternative products. In addition to extra long battery life, the motes feature an advanced array of features. DC9018A-C Evaluation/Development Mote incorporates the RF-Certified LTP5901-WHM SmartMesh WirelessHART Mote PCB Module (including chip antenna) and a CR2032 coin cell. The DC9018A-C is also available as part of the DC9022A SmartMesh WirelessHART RF Certified Starter Kit. SmartMesh WirelessHART Starter Kit Software Software Utility Description Download Link SmartMesh SDK (optional) Software development kit used to interact with the devices’ Application Programming Interface (API) GitHub Repository