Press Release

THAT announces highest performance low-noise current-feedback amplifier

THAT1570 is a low-noise high-performance differential preamplifier for precision signal conditioning, e.g. differential summing, differential variable-gain, microphone preamplifier, moving-coil transducer amplifier. Also for variety of audio, sonar.

Source: THAT Corporation
11/2/2009

THAT Corporation has announced the THAT1570, a new IC amplifier for high-performance signal processing. The 1570 is a low-noise high-performance differential preamplifier designed for a variety of precision signal conditioning applications. It can function as a differential summing preamplifier, differential variable-gain preamplifier, microphone preamplifier, and moving-coil transducer amplifier. The 1570 can also be applied in a variety of audio, sonar and other instrumentation applications.

The THAT1570 features a differential output and the specifications to meet the stringent demands of precision applications: low input noise of 1 nV/√Hz at 60 dB gain; low THD+N of 0.0005% at ≤ 30 dB gain, and 0.0008% at 40 dB gain, wide bandwidth of 4.2 MHz at 40 dB gain, high slew rate of 53 V/μs, wide signal swing >28.7 dBu (±18 V supplies), and adjustable gain from 0 to >60 dB.

Les Tyler, THAT’s president, commented, “The 1570 improves on existing preamps by offering more versatile gain configuration, lower noise at low gains, higher slew rate and lower distortion. In addition, gain is adjusted by three external resistors, allowing noise to be optimized over a wide range of gains.”

The 1570's differential output simplifies connection to differential input devices such as A/D converters. The chip offers flexible operation from power supplies as low as ±5 V up to ±18 V. In addition, the THAT1570 mates with the THAT5171 digital preamplifier controller IC, forming an optimized digitally controlled audio preamplifier. Designed from the ground up in THAT's complementary bipolar dielectric-isolation process, including laser-trimmed Si-Chrome thin-film resistors, the 1570 improves on existing integrated preamplifiers by offering more versatile gain configuration, higher slew rate, and lower distortion.

Housed in a tiny 4x4 mm QFN16 package, the THAT1570 is available now and costs $3.19 each in 1000-pc quantities. For more information see http://www.thatcorp.com/datashts/THAT_1570_Datasheet.pdf

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 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.