120dB PDM-to-PCM Digital Microphone Interface

Overview

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.

Key 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

Block Diagram

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

Deliverables

Full Datasheet
Test Plan
Synthesized Gate Netlist or RTL
Timing Constraint (.sdc)
Test Benches and Test Vectors
Integration Support
Silicon Validation & AE support

Technical Specifications

Foundry, Node

TSMC 16nm 28nm

Maturity

Mass Production

Availability

Now

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