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SM5866A
D/A Converter for DSD and PCM
The SM5866A is a D/A converter compatible with both the DSD (SA-CD signal format) and the PCM (CD/DVD-Audio and similar formats). DSD employs a 1-bit data stream, from a high-order ΣΔ conversion at 64fs (fs = 44.1kHz), that contains high-level quantization noise in the high-frequency band above 20kHz. The SM5866A, 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 SM5847A or similar digital filter, is converted to a multi-level signal by the 3rd-order noise shaper and then the multi-level signal is D/A converted.
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Mono-channel multi-level D/A converter |
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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 |
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2 selectable DSD digital filters |
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PCM input mode
24-bit, MSB-first, right-justified
8-times or 4-times oversampling of fs = 16kHz to 192kHz |
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System clock (CKI)
Maximum operating frequency: fCKI (max)
37.0MHz (note 1)
45.4MHz (note 2) |
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Package:SOP-28-187075-1
(note 1) Under the operating conditions 1: 4.5 to 5.5V, -40 to 85°C
(note 2) Under the operating conditions 2: 4.75 to 5.25V, -40 to 70°C |
·SA-CD and DVD multi players
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Datasheet(PDF 573KB)
