TAS5708 具有片上 DRC 和扬声器均衡的 20W 立体声闭环 12S 输入音频功率放大器

The TAS5708 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. A 32-bit datapath eliminates the need for pre-scaling before processing and preserves signal integrity without sacrificing dynamic range. A digital audio processor with fully programmable digital filters allows designers to custom tune speakers for optimum sound in small enclosures. A programmable DRC can adjust power levels for a scaleable design while also enabling night-mode listening modes.

The closed-loop architecture allows the device to operate from poorly regulated supplies. Figure 1 below shows the benefit of the feedback architecture when a noisy supply (1kHz, 500mVpp ripple) modulates a 10kHz audio input

	TAS5704	TAS5706A	TAS5706B	TAS5708	TAS5710
Max. Power to Single-Ended Load	20		10
Max. Power to Bridge Tied Load	40	20	20	20	20
Max. Power to Parallel Bridge Tied Load	60
Min. Supported Single-Ended Load	4	4	4
Min. Supported Bridge Tied Load	6	8	8	6	6
Min. Supported Parallel Bridge Tied Load	3.2
Closed/Open Loop	Closed	Closed	Closed	Closed	Closed
Max. Number of Speaker Outputs	4	2	4	2	2
Input Type	Digital	Digital	Digital	Digital	Digital
Control Type	Hardware	Hardware,Software	Hardware,Software	Hardware,Software	Software
Analog Supply Min [V]	3	3	3	3	3
Analog Supply Max [V]	3.6	3.6	3.6	3.6	3.6
Digital Supply Min [V]	3	3	3	3	3
Power Stage Supply Min (V)	10	10	10	8	8
Power Stage Supply Max (V)	26	26	26	26	26
Volume Control		Yes	Yes	Yes	Yes
Dynamic Range Control (DRC)		2-Band	2-Band	Single-Band	2-Band

TAS5708 特性

Audio Input/Output
- 20-W Into an 8-Ω Load From an 18-V Supply
- Wide PVCC Range (10 V to 26 V); 3.3 V Digital Supply
- Supports One Serial Audio Input (8 kHz - 48 kHz Sample Rates) (LJ/RJ/I2S)
- Power-Stage Feedback Allows Operation From Poorly Regulated Power Supplies
Audio/PWM Processing
- Factory-Trimmed Internal Oscillator for Automatic Rate Detection
- High-End 32-Bit Data Path Audio Processor
- 14 Biquads for Speaker EQ
- Dynamic Range Control (DRC)
Benefits
- EQ: Speaker Equalization Improves Audio Performance
- DRC: Enables Speaker Protection and Night-Mode Listening.
- Autobank Switching: Preloaded Coefficients for Three Different Sample Rates Eliminates the Need to Update Coefficients When Sample Rate Changes
- Autodetect: Automatically Detects Sample-Rate Changes Eliminating the Need for External Microprocessor Intervention
- Closed-Loop Power Stage: Enables Wide PVCC Operating Range and Reduced Power Supply Ripple Distortion

TAS5708 芯片订购指南

器件	状态	温度	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
TAS5708PHP	ACTIVE	0 to 85	2.85 \| 1ku	HTQFP (PHP) \| 48	250 \| JEDEC TRAY (5+1)
TAS5708PHPR	ACTIVE	0 to 85	2.35 \| 1ku	HTQFP (PHP) \| 48	1000 \| LARGE T&R

TAS5708 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
TAS5708PHP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	TAS5708PHP	TAS5708PHP
TAS5708PHPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	TAS5708PHPR	TAS5708PHPR

TAS5708 工具与软件

培训内容	型号	软件/工具类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	免费评估工具
TAS5708 评估模块 (EVM)	TAS5708EVM	开发电路板/EVM
TAS5708DKD2 评估模块	TAS5708DKD2EVM	开发电路板/EVM
TAS5708PHD 评估模块	TAS5708PHD2EVM	开发电路板/EVM