TAS5701
20W 立体声数字音频功率放大器（硬件控制）
The is a 20-W efficient, digital audio power amplifier for driving stereo bridge-tied speakers. Two serial data inputs support up to 3 discrete audio channels. The SDIN1 input is routed to the internal left and right outputs. The SDIN2 input is dedicated to the SUB_PWM± outputs.
The TAS5701 is a clock slave-only device receiving clocks from external sources. The TAS5701 operates at a 384-kHz switching rate for 32-, 48-, 96-, and 192-kHz data and 352.8-kHz switching rate 44.1-,88.2-, and 176.4-kHz data. The 8× oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.
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- Audio Input/Output
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- 20-W Into an 8- Load From an 18-V Supply
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- Wide PVDD Range 0 V to 21 V
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- Efficient Class-D Operation Eliminates Need for Heat Sinks
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- Two Serial Audio Inputs 3 Audio channels
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- Supports 32-kHz to 192-kHz Sample Rates LJ/RJ/I2S
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- Line-Level Subwoofer PWM Outputs
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- Audio/PWM Processing
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- BD Filter-free Modulation Supporting Bridge-Tied Loads ONLY
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- 4-Step Volume Control 0 dB, 6 dB, 12 dB, 18 dB
– All Channels Share Same Control
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- Soft Mute 50% Duty Cycle
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- DC Blocking Filters
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- Fixed Maximum Modulation Limit At 97.7%
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- ≥100-dB SNR – Measured at Maximum Output With THD+N = 1%, 1 kHz,
A-Weighted Noise, Gain = 0 dB
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- THD < 0.1% at 1/2 Rated Power
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- General Features
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- 5-V Tolerant Inputs See pin list for details on which inputs are 5-V tolerant
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- Shutdown Mode for Low Power Consumption
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- Thermal and Short-Circuit Protection
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- Autodetect: Automatically Detect Sample-Rate Changes –
No Need for External Microprocessor Intervention