TAS5701系列介绍资料

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TAS5701

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带硬件控制功能的 20W 立体声、0V 至 21V 电源电压、数字输入、开环 D 级音频放大器

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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. 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.

Audio Input/Output
- 20-W Into an 8- 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

Audio input type	Digital Input
Architecture	Class-D
Speaker channels (max)	Stereo
Rating	Catalog
Power stage supply (max) (V)	21
Power stage supply (min) (V)	10
Load (min) (Ω)	6
Output power (W)	20
SNR (dB)	100
THD + N at 1 kHz (%)	0.05
Iq (typ) (mA)	30
Control interface	Hardware
Closed/open loop	Open
Analog supply (min) (V)	3
Analog supply voltage (max) (V)	3.6
Sampling rate (max) (kHz)	192
PSRR (dB)	60
Operating temperature range (°C)	0 to 85

HTQFP (PAP)

144 mm² 12 x 12

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TAS5701

带硬件控制功能的 20W 立体声、0V 至 21V 电源电压、数字输入、开环 D 级音频放大器

4000-306-326