TAS5701

TAS5701 www.ti.com SLOS559A – JUNE 2008 – REVISED AUGUST 2010 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER Check for Samples: TAS5701 FEATURES 1 Audio Input/Output – 20-W Into an 8-Ω Load From an 18-V Supply – Wide PVDD Range (0 V to 21 V) – Efficient Class-D Operation Eliminates Need for Heat Sinks – Two Serial Audio Inputs (3 Audio channels) – Supports 32-kHz to 192-kHz Sample Rates (LJ/RJ/I2S) – Line-Level Subwoofer PWM Outputs Audio/PWM Processing – BD (Filter-free) Modulation Supporting Bridge-Tied Loads ONLY – 4-Step Volume Control (0 dB, 6 dB, 12 dB, 18 dB) – All Channels Share Same Control – Soft Mute (50% Duty Cycle) – DC Blocking Filters – Fixed Maximum Modulation Limit At 97.7% – ≥100-dB SNR – Measured at Maximum Output With THD+N = 1%, 1 kHz, A-Weighted Noise, Gain = 0 dB – THD < 0.1% at 1/2 Rated Power General Features – 5-V Tolerant Inputs (See pin list for details on which inputs are 5-V tolerant) – Shutdown Mode for Low Power Consumption – Thermal and Short-Circuit Protection – Autodetect: Automatically Detect Sample-Rate Changes – No Need for External Microprocessor Intervention DESCRIPTION The TAS5701 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....