THAT Corporation Introduces Low-Cost, Low-Noise, Differential Audio Preamplifier IC

THAT1583 yields low noise and better performance for differential microphone preamplifier and
bus summing applications

Low-cost, Low-noise, Differential
Audio Preamplifier IC

Milford, Mass. – THAT Corporation, a leading provider of high-quality audio IC technologies, today announced the availability of the THAT1583 – a low-cost, high performance current-feedback amplifier with a versatile configuration that yields low noise at low gains, lower distortion overall, and higher slew rate. The 1583 is an optimal solution for microphone preamplifiers, digitally-controlled microphones, preamplifiers, differential low-noise preamplifiers, differential summing amplifiers, differential variable-gain amplifiers, moving-coil transducer amplifiers, line input stages, audio, sonar, and instrumentation.

“The 1583 is a low-cost alternative to our existing line of high performance, digitally controllable preamplifiers,” said Les Tyler, President, THAT Corporation. “Customers looking for the perfect balance between cost and performance will find the 1583 pairs nicely with our equally cost effective THAT5173 digital gain controller, which offers the larger 3dB steps needed for many mic preamp applications.”

Key Features of the 1583:

  • Low Noise: 1.9 nV/√Hz input noise (60 dB gain)
  • Low THD+N:
    • 0.001% ≤ 40 dB gain
    • 0.006% @ 60 dB gain
  • Low Current: 7.0 mA typ
  • Wide Bandwidth:1.7MHz @40dB gain
  • High Slew Rate: 50 V/μs
  • Wide Signal Swing: >+28dBu (±15V supplies)
  • Gain adjustable by external resistors from 0 to >60 dB
  • Differential output
  • Small 4 x 4mm QFN16 package
  • Operates from as little as +/-5 V up through +/-18 V supplies.

Amplifier gain for the 1583 is determined by three external resistors (RA, RB, and RG). This makes it possible to optimize noise and bandwidth over a wide range of gains, as well as optimize the taper of gain vs. rotation in variable-gain, pot-controlled applications. In analog variable-gain applications, it supports the traditional single-section control method, but enables a dual-element alternative that yields better performance.

The 1583’s differential output simplifies connections to differential input devices such as A/D converters. When required, designers are free to optimize the output differential amplifier to suit the specific application. In addition to analog-controlled applications, the 1583 is designed to mate perfectly with THAT’s 517X series of Digital Preamplifier Controller ICs to produce an optimized, digitally controller audio preamplifier.

Availability and Pricing

The 1583 is now available from THAT Corporation and its authorized distributors. Pricing for the 1583 starts at $1.80 at 1k pieces.

To learn more about our Preamplifier ICs or to order 1583 samples, click below:

About THAT Corporation
THAT Corporation, founded in 1989, designs and sells high-performance analog integrated circuits for professional audio manufacturers. THAT’s ICs include analog input and output stages, digitally controlled low-noise preamplifiers, Analog Engines® and its original line of voltage-controlled amplifiers (VCAs) – all used throughout the pro audio industry. The company also licenses patents, trademarks, and other intellectual property to the TV broadcast and reception industries. Licensed products include the dbx-tv® Total™ series of audio enhancement technology and digital implementations of legacy TV audio receiver standards. The company is headquartered in Milford, Massachusetts, with offices in Milpitas, California.

For more information, contact:
THAT Corporation, 45 Sumner Street, Milford, MA 01757-1656 , USA
Telephone: +1 (508) 478-9200; Fax +1 (508) 478-0990
Email: More Information

Editorial Contact:
Ken Nevard, IC Marketing Manager
Tel: +1 (508) 478-9200 x108
Email: Editorial Contact