The RTH110 from Teledyne Scientific Company is a Track and Hold Amplifier that operates from DC to 50 GHz. It has a total harmonic distortion (THD) of better than -35 dBc and a spurious free dynamic range (SFDR) of better than 38 dBc (at 50 GHz). This amplifier has an output bandwidth of 300 MHz with a sampling rate of better than 10 GHz. It cascades three track-and-hold circuits that include TH1, TH2, and TH3. This device uses the TH1 circuit to capture the input signal and TH2/TH3 to provide a longer sampling time for the subsequent circuit. It offers a single output clock to ease the clock distribution for the sampling and digitizing circuitry, compared to the case of track-and-hold (TH) circuits with dual clocks.
The RTH110 is designed to analyze signals over a wide bandwidth and accurately sample to ensure high linearity and performance. This track-and-hold amplifier requires a DC supply from -5.0 to -5.4 V and consumes 1.9 W of power. It is available in a surface-mount package that measures 4 x 4 mm and is ideal for direct down-conversion in RF systems and test and measurement applications.
