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120dB PDM-to-PCM Digital Microphone Interface
The AR36T05 is a soft macro low-power high-performance digital microphone interface modulator IP. The IP converts stereo/mono 1-bit pulse-density modulated (PDM) bit stream data from external digital microphones into 16-24bit pulse-code modulated (PCM) data for base-band processing. It is expandable to multi-channel system for various voice and audio applications.
The IP is portable to any logic process node for silicon realization. It is now silicon-proven in TSMC 16nm and 28nm logic processes.
The IP is portable to any logic process node for silicon realization. It is now silicon-proven in TSMC 16nm and 28nm logic processes.
Features
- SNR 122dB; DR 121dB
- PDM (pulse-density modulated) Input
- PCM (pulse-code modulated) output
- Support PDM_CLK rates of 0.512MHz~8.64MHz
- Support left /right mono mode, stereo mode
- Sampling Rate: 8K-96KHz, upgrade to higher Fs
- PGA Gain: Tunable with a wide range, 0.75dB/Step
- Soft gain tuning
- Soft mute
- Digital audio interface (master & slave)
- DAI data format: I2S, Left-justified, PCM
- Control Interface: Register / I2C, APB/MCU bus
Benefits
- Easy Integration
- Quick Time-to-Market
- Reduced R&D Cost
- Enhance 1st Tape Out Success
- Differentiated SoC Solution
- Early Market Penetration
Deliverables
- Full Datasheet
- Test Plan
- Synthesized Gate Netlist or RTL
- Timing Constraint (.sdc)
- Test Benches and Test Vectors
- Integration Support
- Silicon Validation & AE support
Applications
- Machine Learning / Voice Recognition System
- IoT System and Node
- Smart Wearable Devices
- Smart Voice/Audio Home Appliance
- Portable Media
- VR/AR/MR System
- Surveillance System
Block Diagram of the 120dB PDM-to-PCM Digital Microphone Interface IP Core
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PDM-to-PCM IP
- 105dB PCM-to-PDM Stereo Converter
- PDM-to-PCM converter with WhisperTrigger Voice detection feature
- PDM-to-PCM converter with WhisperTrigger Voice detection feature
- PDM-to-PCM converter with WhisperTrigger Voice detection feature
- PDM-to-PCM Conversion with AMBA Interface
- PDM to PCM Conversion, SMIC 65nmLL