THAT 5263N243CS, Dual Digital Preamp Controller, QFN24

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Manufacturer: THAT
Article code: THAT5263N243CS

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2-Channel Digital Audio Preamplifier Controller

Wide gain range: 0 dB to 51 dB

in 3 dB Steps

Wide supply range: ±5V to ±17V

Wide output swing: + 29.6 dBu (±17V)

Wide input swing: + 29.6 dBu (±17V)

Low Power: 48mW @± 15V Supplies

Low THD+N: 0.003% @ 24 dB gain

Zero-crossing detectors minimize

switching noise

Daisy chainable SPI interface

Two general-purpose logic outputs

Small 5mm x 5mm QFN24 package

Datasheet 5263

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The THAT 5263 is a 2-channel digital preamplifier controller intended for use with low-noise, analog, differential audio preamplifiers such as the THAT 1580 and 1583.

The 5263 controls gain from 0dB to 51 dB in 3dB steps while preserving low noise and distortion.

Operating from ±5V to ±17V analog supplies, it supports input signal levels as high as +29.6 dBu (at 0dB gain, ±17V supplies, and THAT1580) without an input pad.

Used with a THAT 1580 preamplifier IC, equivalent input noise (EIN) at 51 dB gain is -128.3 dBu (20 Hz - 20 kHz bandwidth, 150-ohm source).

Each 5263 channel includes a zero-crossing detector to minimize glitches (zipper noise) during gain adjustments.

A built-in timer forces a gain change if no zero crossing occurs within 24 msec of a gain change command.

A busy pin (BSY) allows synchronization of external events and the 5263's own GPOs with the zero-crossing detector.

The 5263 is controlled via an industry standard serial-peripheral interface (SPI) port.

The part mates perfectly with the THAT 1580 and 1583 Differential Audio Preamplifier ICs. Together, these combinations provide high performance, space-saving solutions for digitally-controllable audio preamplifiers.

However, the 5263 may also be used to control discrete preamplifiers.

Fabricated in a high-voltage CMOS process, the 5263 comes in a small (5x5 mm) 24-pin QFN package, making it suitable for small portable devices.

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THAT 5263N243CS, Dual Digital Preamp Controller, QFN24

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