1510/1512 High Performance Audio Preamplifier
The THAT 1510 and 1512 are high performance current-feedback instrumentation amplifiers designed for low source-impedance preamp and bus summing applications. The ICs are available in a variety of packages and pin configurations, making them pin compatible with the Analog Devices SSM2019 and SSM2017 (discontinued), and the Texas Instruments INA217 and INA163.
1570 Low-Noise Differential Audio Preamplifier
The THAT1570 is a versatile, high performance current-feedback amplifier suitable for differential microphone preamp and bus summing applications. The IC comes in a small QFN package, which saves PCB space over discrete and other integrated solutions.
5171 Digitally Programmable Gain Controller IC
The THAT5171 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT1570. When used in conjunction with an appropriate analog gain block, the 5171 can set gain to 5.6dB, or any gain from 13.6dB to 68.6dB in 1dB steps, while preserving low noise and distortion. It operates from ±5V to ±17V supplies, supporting input signal levels as high as +22 dBu (at 5.6dB gain, and ±17V supplies) in combination with the 1570 (without an external input pad). The 5171 includes a differential servo and zero-crossing detector to minimize dc offsets and glitches (zipper noise) during gain adjustments.
5173 Low-Cost Digitally Programmable Gain Controller IC
The THAT5173 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT1570. When used in conjunction with an appropriate analog gain block, the 5173 can set gain from 0 to 60dB in 3dB steps, while preserving low noise and distortion. It operates from ±5V to ±17V supplies, supporting input signal levels as high as +27 dBu (±17V supplies) in combination with the 1570 (without an external input pad). The 5173 includes a differential servo and zero-crossing detector to minimize dc offsets and glitches (zipper noise) during gain adjustments.
1570/5171 Digital Microphone Preamplifier Chip Set
The THAT1570 and THAT5171 ICs enable digitally controlled microphone preamplifier applications with unprecedented performance. Operating on maximum ±17V supplies, the chipset accepts pro audio input levels (+22dBu max) without an input pad. Gain is adjustable to 5.6dB, and from 13.6dB to 68.6dB in 1dB increments. The 5171’s built-in zero-crossing detector and other patent-pending techniques for reducing zipper noise enable very smooth and silent gain changes. A differential servo reduces output offsets to less than 1.5 mV.
1570/5173 Digital Microphone Preamplifier Chip Set
The THAT1570 and THAT5173 ICs enable digitally controlled microphone preamplifier applications while perserving low noise and distortion. Operating on maximum ±17V supplies, the chipset accepts pro audio input levels (+27dBu max) without an input pad. Gain is adjustable from 0dB to 60dB in 3dB increments. The 5173’s built-in zero-crossing detector and other patent-pending techniques for reducing zipper noise enable very smooth and silent gain changes.
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