TAS5727系列介绍资料

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TAS5727

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具有扬声器 EQ 和 DRC 的 25W 单声道、8V 至 26V 电源电压、数字输入、开环 D 级音频放大器

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The TAS5727 is a 25-W, efficient, digital-audio power amplifier for driving stereo bridge-tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers.

The TAS5727 is a slave-only device receiving all clocks from external sources. The TAS5727 operates with a PWM carrier between a 384-kHz switching rate and a 288-KHz switching rate, depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.

Audio Input and Output
- 25 W Into an 8-Ω Load From a 20-V Supply
- Wide PVDD Range, From 8 V to 26 V
- Supports BTL Configuration With 4-Ω Load
- Efficient Class-D Operation Eliminates Need for Heatsinks
- One Serial Audio Input (Two Audio Channels)
- I²C Address Selection Pin (Chip Select)
- Single Output Filter PBTL Support
- Supports 44.1-kHz to 48-kHz Sample Rate (LJ/RJ/I²S)
Audio and PWM Processing
- Independent Channel Volume Controls With Gain of 24 dB to Mute With 0.125-dB Resolution Steps
- Programmable Two-Band Dynamic-Range Control
- 18 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
- Programmable Coefficients for DRC Filters
- DC Blocking Filters
General Features
- I²C Serial Control Interface Operational Without MCLK
- Requires Only 3.3 V and PVDD
- No External Oscillator: Internal Oscillator for Automatic Rate Detection
- Surface-Mount, 48-Pin HTQFP Package
- Thermal and Short-Circuit Protection
- 106-dB SNR, A-Weighted
- AD, BD, and Ternary Modulation
- Up to 90% Efficient
- PWM Level Meter to Measure the Digital Power Profile
Benefits
- EQ: Speaker Equalization Improves Audio Performance
- Two-Band DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening
- Autodetect: Automatically Detects 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)	26
Power stage supply (min) (V)	8
Load (min) (Ω)	4
Output power (W)	25
SNR (dB)	106
THD + N at 1 kHz (%)	0.03
Iq (typ) (mA)	26
Control interface	Software
Closed/open loop	Open
Analog supply (min) (V)	3
Analog supply voltage (max) (V)	3.6
Sampling rate (max) (kHz)	48
Operating temperature range (°C)	0 to 85

HTQFP (PHP)

81 mm² 9 x 9

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TAS5727

具有扬声器 EQ 和 DRC 的 25W 单声道、8V 至 26V 电源电压、数字输入、开环 D 级音频放大器

4000-306-326