SM5866AS

SM5866AS D/A Converter for DSD and PCM OVERVIEW The SM5866AS is a D/A converter compatible with both the DSD SACD signal format and the PCM CD/DVD-Audio and similar formats. DSD employs a 1-bit data stream, from a high-order ∆Σ conversion at 64fs (fs = 44.1kHz), that contains high-level quantization noise in the high-frequency band above 20kHz. The SM5866AS, in DSD reproduction, has a DSD-dedicated FIR digital filter that attenuates the DSD quantization noise in the digital domain, and the resulting multi-level signal is D/A converted. In PCM reproduction, an oversampled PCM signal input, provided using a SM5847AF or similar digital filter, is converted to a multi-level signal by the 3rdorder noise shaper and then the multi-level signal is D/A converted. FEATURES I I PINOUT (Top view) I I I I I I I I I Mono-channel multi-level D/A converter High performance analog characteristics DSD mode (typical values) - THD + N: –109dB (0.00036%) - D.R: 115dB PCM mode (typical values) - THD+N: –106dB (0.00050%) - D.R: 112dB 2 selectable DSD digital filters PCM input mode 24-bit, MSB-first, right-justified 8-times or 4-times oversampling of fs = 16k to 192kHz System clock (CKI) Maximum operating frequency: fCKI (max) 37.0MHz (note 1) 45.4MHz (note 2) DSD mode fs = fCKI/512 typ. fs = 44.1kHz max. fs = 52.7kHz (note 1) max. fs = 88.7kHz (note 2) PCM mode system clock 192/256/384/512/768fs Operating voltage: 4.5 to 5.5V Operating temperature: –40 to 85°C Package: 28-pi...