Synaptics® CX22721 I2S 2W CODECAudioSmart® Product Brief
●High Performance Stereo Class-D Amplifier for Advanced In-Air Playback
■The Synaptics CX22721 is a high performance, stereo class-D amplifier designed to enable advanced in-air playback functionality for systems that use Synaptics Voice Processors.
■The CX22721 features I²S audio I/O with I²C control, dedicated hardware DSP effects for speaker tuning, and an Acoustic Echo Canceler (AEC) reference output optimized for Synaptics Voice solutions.
■The CX22721 provides 2W per channel output with 1% distortion at 5V PVDD with a 4Ω speaker, and 1.3W per channel output with an 8Ω speaker. The Class-D amplifier uses programmable signal dynamics management and power-averaging technology to safely maximize sound pressure level.
■The Synaptics SpeakerShield provides industry-leading, real-time protection with features including load-based DC detection, short-circuit, near-short, high temperature, and over-temperature protection. The device also supports a high-quality Line Out port with Headphone Drive capability.
■The host interface provides selectable signaling levels of 1.8V and 3.3V. The Digital-to-Analog converters (DACs) support sampling frequencies of 44.1k, 48k, 96k, and 192kHz. Multiple General Purpose Input/Outputs (GPIOs) are available, as well as a bi-directional External Amplifier Power-Down (EAPD) function for advanced Power Management.
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[ Voice-controlled STB ][ Smart Bluetooth speaker ][ WiFi speaker ][ Voice interactive smart appliances ][ Internet of Things (IoT) devices ] |
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Datasheet |
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Please see the document for details |
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QFN |
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English Chinese Chinese and English Japanese |
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November 7, 2017 |
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Rev. A |
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190-000279-01 |
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158 KB |
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