5263N24-U

5263N24-U is a 2-channel digital preamplifier controller intended for use with low-noise, analogue, differential audio preamplifiers such as the THAT 1580 and 1583. The 5263 controls gain from 0dB to 51dB in 3dB steps while preserving low noise and distortion. Operating from ±5V to ±17V analogue supplies, it supports input signal levels as high as +29.6dBu (at 0dB gain, ±17V supplies, and THAT 1580) without an input pad. Each 5263 channel includes a zero-crossing detector to minimize glitches (zipper noise) during gain adjustments. It is used in applications such as digitally controlled microphone preamplifiers, digitally controlled instrumentation amplifiers, digitally controlled differential amplifiers, audio mixing consoles, computer audio interfaces, audio distribution systems, digital audio snakes, and audio recorders.

• Zero-crossing detectors minimize switching noise
• Daisy chainable SPI interface
• Two general-purpose logic outputs
• Wide supply voltage range from ±5V to ±17V
• Wide gain range from 0dB to 51dB in 3dB Steps
• THD+N is 0.003% typical at (1KHz, gain = 24dB)
• ZCD timeout is 24ms typical at (built-in time-out)
• Crosstalk is 117dB typical at (all switches off)
• Digital supply current is 50µA typical at (no signal)
• Operating temperature range from -40°C to +85°C, 24-pin QFN package