مدار مجتمع (آی سی) آی‌سی جمع‌آوری داده ای‌دی‌سی و دی‌ای‌سی کاربرد ویژه

Product Attributes

Introduction

The WM1811G is a highly integrated ultra-low power hi-fi CODEC designed for smartphones and other portable devices rich in multimedia features.

Features

• An integrated stereo Class D speaker driver and Class W headphone driver minimize power consumption during audio playback.
• The device requires only two voltage supplies, with all other internal supply rails generated from integrated LDOs.
• Stereo full duplex asynchronous sample rate conversion and multi-channel digital mixing combined with powerful analogue mixing allow the device to support a huge range of different architectures and use cases.
• A programmable parametric EQ provides speaker compensation in the digital playback paths. The dynamic range controller can be used in record or playback paths for maintaining a constant signal level, maximizing loudness and protecting speakers against overloading and clipping.
• A smart digital microphone interface provides power regulation, a low jitter clock output and decimation filters for up to two digital microphones. Microphone activity detection with interrupt is available. Low power jack detection is supported via a dedicated input pin. Impedance sensing and measurement is provided for external accessory / push-button detection.
• Fully differential internal architecture and on-chip RF noise filters ensure a very high degree of noise immunity. Active ground loop noise rejection and DC offset correction help prevent pop noise and suppress ground noise on the headphone outputs.
• 24-bit 2-channel hi-fi DAC and 2-channel hi-fi ADC
• 100dB SNR during DAC playback (‘A’ weighted)
• Smart MIC interface - Power, clocking and data input for up to two digital MICs - High performance analogue MIC interface
• MIC activity detect & interrupt allows processor to sleep
• Low power jack detection support
• Impedance sensing for accessory / push-button detection
• 2W stereo (2×2W) Class D speaker driver
• Wolfson Class W headphone drivers - Integrated charge pump - 5.3mW total power for DAC playback to headphones
• 4 Line outputs (single-ended or differential)
• BTL Earpiece driver
• Digital audio interfaces for multi-processor architecture - Asynchronous stereo duplex sample rate conversion - Powerful mixing and digital loopback functions
• ReTuneTM Mobile 5-band, 4-channel parametric EQ
• Dynamic range controller
• Dual FLL provides all necessary clocks - Self-clocking modes allow processor to sleep - All standard sample rates from 8kHz to 96kHz
• Active noise reduction circuits - DC offset correction removes pops and clicks - Ground loop noise cancellation
• Integrated LDO regulators

Applications

• Smartphones and music phones
• Portable navigation
• Tablets, eBooks
• Portable Media Players