THAT 5171N32, Digital Preamplifier Controller, QFN32

€ 17,55 *Prices include VAT € 14,50 excluding VAT €

Manufacturer: THAT
Article code: THAT5171N32

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High-Performance Digital Preamplifier Controller

Ideal mate for THAT1580 preamplifier

Wide gain range: +13.6 to +68.6dB in

1dB steps, and +5.6dB

Wide supply range: ±5V to ±17V

Wide output swing:+27dBu (±17V sup.)

Wide input swing: +22dBu (±17V sup.)

Low THD+N: 0.0003% @ 22dB gain

Integrated differential servo minimizes

output offset

Zero-crossing detector minimizes

switching noise

Flexible, addressable SPI interface

Four general-purpose digital outputs

Small 7mm x 7mm QFN32 package

Datasheet 5171

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The THAT5171 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT 1580.

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 1580 (without an external input pad).

The 5171 includes a differential servo and zerocrossing detector to minimize dc offsets and glitches (zipper noise) during gain adjustments.

The 5171 is controlled via an addressable serial-peripheral interface (SPI) port. Four General Purpose Outputs (GPOs) can be controlled via this interface.

The GPOs may be connected to input pads, analog switches, mute circuits, LEDs, etc.

The SPI bus supports read-back so that host software can verify proper operation.

The 5171 was designed to mate perfectly with the THAT 1580 Differential Audio Preamplifier IC. Together, these two ICs provide a best-of class solution for digitally-controllable audio preamplifier applications. However, for designers who prefer a more customized solution, the 5171 may also be used to control a discrete preamplifier.

Fabricated in a high-voltage CMOS process, the 5171 integrates an astonishing amount of circuitry within a very small package. It comes in a small (7x7 mm) 32-pin QFN package, making it suitable for small portable devices.

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THAT 5171N32, Digital Preamplifier Controller, QFN32

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