Midas M9000 120 dB Stereo D/A Converter (TSSOP-28)

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The M9000 is a complete stereo 24 bit/192 kHz digital to-analog system. This D/A system includes digital deemphasis, half dB step size volume control, ATAPI channel mixing, selectable fast and slow digital interpolation filters followed by an oversampled multi-bit delta-sigma modulator that includes mismatch shaping technology that eliminates distortion due to capacitor mismatch. Following this stage is a multi-element switched capacitor stage and low pass filter with differential analog outputs.

The M9000 also has a proprietary DSD processor that allows for volume control and 50 kHz on-chip filtering without an intermediate decimation stage. It also offers an optional path for direct DSD conversion by directly using the multi-element switched capacitor array.

General Features

• Advanced Multibit Delta-Sigma Architecture
  • 120 dB Dynamic Range
  • 107 dB THD+N
  • Low Clock Jitter Sensitivity
  • Differential Analog Outputs
• PCM input
  • 102 dB of Stopband Attenuation
  • Supports Sample Rates up to 192 kHz
  • Accepts up to 24 bit Audio Data
  • Supports All Industry Standard Audio Interface Formats
  • Selectable Digital Filter Response
  • Volume Control with 1/2 dB Step Size and Soft Ramp
  • Flexible Channel Routing and Mixing
  • Selectable De-Emphasis
• Control Output for External Muting
  • Independent Left and Right Mute Controls
  • Supports Auto Detection of Mute Output Polarity

Stand-Alone Mode

• Selectable Oversampling Modes
  • 32 kHz to 54 kHz Sampling Rates
  • 50 kHz to 108 kHz Sampling Rates
  • 100 kHz to 216 kHz Sampling Rates
• Selectable Serial Audio Interface Formats
  • Left-Justified, up to 24 bit
  • I²S, up to 24 bit
  • Right-Justified 16 bit
  • Right-Justified 24 bit
• Auto Mute Output Polarity Detect
• Auto Mute on Static PCM Samples
• 44.1 kHz 50/15 us De-Emphasis Available
• Soft Volume Ramp-up after Reset is Released
• Supports Stand-Alone or I²C/SPITM Configuration Embedded Level Translators
  • 1.8 V to 5 V Serial Audio Input
  • 1.8 V to 5 V Control Data Input
• Direct Stream Digital (DSD)
  • Dedicated DSD Input Pins
  • On-Chip 50 kHz Filter to Meet Scarlet Book SACD Recommendations
  • Matched PCM and DSD Analog Output Levels
  • Non-Decimating Volume Control with 1/2 dB Step Size and Soft Ramp
  • DSD Mute Detection
  • Supports Phase-Modulated Inputs
  • Optional Direct DSD Path to On-Chip Switched Capacitor Filter

Control Port Mode Features

• Selectable Oversampling Modes
  • 32 kHz to 54 kHz Sampling Rates
  • 50 kHz to 108 kHz Sampling Rates
  • 100 kHz to 216 kHz Sampling Rates
• Selectable Serial Audio Interface Formats
  • Left-Justified, up to 24 bit
  • I²S, up to 24 bit
  • Right-Justified 16 bit
  • Right-Justified 18 bit
  • Right-Justified 20 bit
  • Right-Justified 24 bit
• Direct Stream Digital Mode
• Selectable Auto or Manual Mute Polarity
• Selectable Interpolation Filters
• Selectable 32, 44.1, and 48 kHz De-Emphasis
• Configurable ATAPI Mixing Functions
• Configurable Volume and Muting Controls

References