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 类音频放大器
| Audio input type | Digital Input |
| Architecture | Class-D |
| Speaker channels (Max) | Stereo |
| Power stage supply (Max) (V) | 21 |
| Power stage supply (Min) (V) | 10 |
| Load (Min) (ohms) | 6 |
| Output power (W) | 20 |
| SNR (dB) | 100 |
| THD + N @ 1 kHz (%) | 0.05 |
| Iq (Typ) (mA) | 30 |
| Control interface | Hardware |
| Closed/open loop | Open |
| Analog supply (Min) (V) | 3 |
| Analog supply (Max) (V) | 3.6 |
| Sampling rate (Max) (kHz) | 192 |
| PSRR (dB) | 60 |
| Operating temperature range (C) | 0 to 85 |
- 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
- 20-W Into an 8-
- 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
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.
