OVERVIEW

The SM5865AM is a 24-bit input D/A converter for high-quality digital audio equipment. It comprises newly developed DEM (dynamic element matching) circuits, 3rd-order Σ∆ noise shaper and 23-level quantizer to control wide-band residual quantization noise in the signal band, making it ideal for application with high-frequency sampling formats. Also, the order of the required final-stage analog lowpass filter can be reduced, compared to filters for available devices, enhancing output tone quality. The output stage employs complementary outputs for high-accuracy analog signals, with appropriate lowpass filtering of the output signal.

FEATURES

■ Single-channel D/A converter built-in

■ High performance

(120 dB signal-to-noise ratio)

(0.001 total harmonic distortion and noise)

(110 dB dynamic range)

■ Σ∆ D/A converter

• 3rd-order noise shaper

• 23-level quantizer

■ Input data format

• 20 or 24-bit word length

• MSB first, right-justified format

• 8 or 4 times oversampling at fs = 32/44.1/48/

88.2/96/192 kHz

■ System clock frequency

• 128/192/256/384/512/768 fs

■ Single 5 V operating supply voltage

■ 24-pin SSOP package

■ Molybdenum-gate CMOS process