THAT Corp. intros low-noise digital gain controller for high-quality audio performance

MILFORD, USA: THAT Corp., a leading provider of high-quality audio IC technologies, announced the latest addition to its best-in-class IC product line -- the THAT5173 digital gain controller, a cost-effective, high-quality solution for digitally-controlled audio preamplifier applications.

Accepting full pro-audio signal levels up to +27.5dBu without an input pad, the 5173 maintains exceptional performance over a wide range of gains and signal levels. Thanks to its advanced design and integrated DC servo amplifier, the 5173 provides click-less digital gain control for differential analog current-feedback preamplifiers. The small 5mm x 5mm 5173 controls gain from 0dB to 60dB in 3dB steps, with low noise and distortion.

The 5173 is designed to operate seamlessly with the THAT1570 high performance current-feedback amplifier, THAT's state-of-the-art analog differential microphone preamp. In combination with the 1570, the 5173 operates with supplies from ±5V to ±17V. Its differential output is ideal for connection to high-performance, differential-input A/D converters.

“The 5173 is the first significant extension to our existing line of digitally controllable preamplifiers,” said Les Tyler, president. “Customers who require the ultimate in performance will select the 5171/1570 combination, while those who are more cost-conscious will find the 5173/1570 strikes an appropriate balance between cost and performance. 3dB steps are appropriate for many mic preamp applications, and by accepting full pro audio levels without a pad, the 5173 saves space over other approaches.”

The THAT5173 digital gain controller is targeted for high performance digitally-controlled preamplifiers, either as standalone products, or within audio mixing consoles, PC-audio breakout boxes, and instrumentation amplifiers. The IC comes in a QFN24 package. It features a wide gain range of 0 to 60dB in 3dB steps, a supply range of ±5V to ±17V, an output and input swing of up to +27.5dBu (± 17V supply) and a low 1kHz THD under 0.001% for gains up to 42dB.