THAT Corporation Introduces Low-Noise Differential Audio Preamplifier IC

Improves Price-Performance Ratio for Differential Microphone Preamplifier Applications
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Improves Price-Performance Ratio for Differential Microphone Preamplifier Applications
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THAT1580 improves price-performance ratio for differential microphone preamplifier applications

Differential Audio Preamplifier
Milford, Mass. – THAT Corporation, a leading provider of high-quality audio ICs, today announced the availability of the THAT1580 – a high performance current-feedback amplifier using THAT’s “deconstructed” approach that yields lower noise and distortion with higher slew rate while reducing cost. The 1580 is an optimal solution for analog and digitally controlled microphone preamplifiers, differential summing amplifiers, and even line-level input stages. It has application to audio, sonar, and instrumentation.

“The 1580 is our latest high-performance preamp. As the new performance leader, it will supersede the 1570 as the best digitally controllable preamplifier available,” said Ken Nevard, IC Marketing Manager, THAT Corporation. “It really offers the best of both worlds: world class performance for traditional, analog-controlled pre-amp applications, but perfect pairing with our family of digital preamp controllers, such as the THAT 5171 and 5173.”

Key features of the 1580 include:

  • Very Low Noise: 134.8dBu (1.0nV/√Hz) EIN@60dB gain
  • Ultra Low THD+N
  • 0.0003% 3-30 dB gain
  • 0.0005% @ 40 dB gain
  • Low Current: 7.9 mA typ
  • Wide Bandwidth: 2.7MHz @40dB gain
  • Very High Slew Rate: 53 V/μs
  • Wide Output Signal Swing: +29.8dBu (±18V supplies)
  • Maximum Differential Input Level: +26dBu (±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

Unlike traditional mic preamps (e.g., THAT 1510 and 1512), the 1580’s gain is determined by three external resistors instead of only one. 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. For digital control applications, the 1580 mates perfectly with THAT's 5XXX series of Digital Preamplifier-Controller ICs to produce an optimized, digitally controlled preamplifier.

The 1580'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.

The 1580 is available immediately from THAT Corporation and its authorized distributors. Pricing starts at $2.53 at 1k pieces.

To learn more about our Preamplifier ICs or to order 1580 samples, click below:

A quick overview of our entire Preamplifier Family

Order samples: THAT Sample Request

Order demo boards: THAT Demonstration Boards

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, low-noise preamplifiers, and its original line of voltage-controlled amplifiers (VCAs) and RMS-level detectors – all used throughout the pro audio industry. The company also licenses patents, trademarks, and other intellectual property to the TV broadcast and reception industries. Under the dbx-tv® brand name, THAT offers Total Sonics™, Total Surround, and Total Volume™, TV audio enhancement technology and digital (Verilog®) implementations of legacy TV audio receiver standards covering all parts of the world, including BTSC, A2, NICAM, and EIA-J. The company is headquartered in Milford, Massachusetts, with offices in Tokyo, Japan and Milpitas, California.