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
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