Demonstration circuit 501 is high power, high voltage, and high efficiency DC/DC buck converter featuring the LTC3703. This is a general-purpose high voltage DC to DC with an input voltage range of 20V to 72V. The board is optimized for positive 48V input operation with high voltage surges up to 72VDC allowed. The limiting factor is the LTC3703 GN16 package that will not meet UL/CSA/IEC60950 clearance and creepage distance requirements above the SELV 60VDC maximum due to pin spacing. If the user wishes to support higher continuous input voltages or compliance to 60950, the LTC3703 is offered in a G-28 pin package. See Data Sheet. However, for the purposes of evaluation, the board will work reliably up to 72V. The maximum continuous current in free air is 4A. 6A is permissible with some forced air cooling. The output voltage is programmed with a voltage divider and configured for 12V.

DC1792A: Demo Board for the LTC2756 Serial 18-Bit SoftSpan IOUT DAC.

DC1796A-A Demo Board for: LTC2370-16 16-Bit, 2Msps, Pseudo- Differential Unipolar SAR ADC with 94dB SNR LTC6360 Very Low Noise Single-Ended SAR ADC Driver with True Zero Output

DC1796A-D Demo Board for: LTC6360 Very Low Noise Single-Ended SAR ADC Driver with True Zero Output LTC2364-16 16-Bit, 250ksps, Pseudo-Differential Unipolar SAR ADC with 94.7dB SNR

Demonstration circuit 1801A is a dual output 1.5V/20A and 1.2V/20A synchronous buck converter operating with a switching frequency of 300kHz over an input voltage range of 4.5V to 14V. The demo board comes in two versions. The A version uses inductor DCR current sensing for high efficiency. The B version uses 2mΩ sense resistor for accurate current sensing with a low DCR ferrite inductor. The fixed on-time valley current mode topology of the LTC3838 allows for a fast load step response.

The LTC6362 is a low power, low noise differential op amp with rail-to-rail input and output swing that has been optimized to drive low power SAR ADCs. The amplifier may be configured to buffer a fully differential input signal or convert a single-ended input signal to a differential output signal.

Demonstration circuit 1812A (Figure 1) features the LTC2943. The LTC2943 has an operating range of 3.6V to 20V making it perfectly suited for multicell battery applications. A precision analog coulomb counter integrates current measured through a sense resistor between the battery’s positive terminal and the load or charger. The default value assembled on the DC1812A-A is 100mΩ for a maximum current measurement of 500mA. The LTC2943 measures voltage, current and temperature with an internal 14-bit No Latency ΔΣ™ ADC. The measurements are stored in internal registers accessible via the onboard SMBus/I2C interface.

DC1813A-F Demo Board for: LTC2368-18 18-Bit, 1Msps, Pseudo-Differential Unipolar SAR ADC with 97dB SNR LTC6655 0.25ppm Noise, Low Drift Precision References LT6202 Single 100MHz, Rail-to-Rail Input and Output, Ultralow 1.9nV√Hz Noise, Low Power Op Amps

DC1813A-G Demo Board for: LTC2367-18 18-Bit, 500ksps, Pseudo-Differential Unipolar SAR ADC with 97dB SNR LTC6655 0.25ppm Noise, Low Drift Precision References LT6202 Single 100MHz, Rail-to-Rail Input and Output, Ultralow 1.9nVrtHz Noise, Low Power Op Amps

The LT3798 is a constant-voltage/constant-current isolated flyback controller that combines active power factor correction (PFC) with no opto-coupler required for output voltage feedback into a single-stage converter. A LT3798 based design can achieve a power factor of greater than 0.97 by actively modulating the input current, allowing compliance with most Harmonic Current Emission requirements.The LT3798 is well suited for a wide variety of off-line applications. The input range can be scaled up or down, depending mainly on the choice of external components. Efficiencies higher than 86% can be achieved with output power levels up to 100W. In addition, the LT3798 can easily be designed into high DC input applications.Applications Offline 5W to 100W+ Applications High DC VIN Isolated Applications Offline Bus Converter (12V, 24V or 48V Outputs)