CXAR41105立体声高效率无滤波器的D级音频放大器扬声器驱动的立体声桥接负载BTL模式耳机驱动的立体声单端SE模式组合到芯片SE/BTL输入控制管脚信号切换这两种模式在5V时将2.8W驱动到4W扬声器

CXAR41105是一款立体声、高效率、无滤波器的D级音频放大器，可在SSOP-24和SSOP-24P包中提供。CXAR41105提供精确的直流音量控制，增益范围从-80dB（VVOLUME=0V）到+20dB（VVOLUME=5V），64步精确控制。使用64步增益设置很容易获得合适的放大器增益。与传统的D类音频放大器相比，无滤波器结构消除了输出滤波器，减少了外部元件的数量和元件的数量，节省了PCB空间和系统成本，简化了滤波器的设计和功耗。CXAR41105提供了AGC（Non-Clip）功能，该功能可以降低大输入信号的动态范围。cxar41105可以提供从20dB到-80dB的非限幅增益降低64步的功能，该功能可以避免输出信号的限幅。CXAR41105还集成了防弹出电路，可减少通电/断电或关机启用过程中的弹出声和咔哒声。CXAR41105内置过电流和热保护，防止芯片因短路或过温而损坏。CXAR41105将用于扬声器驱动的立体声桥接负载（BTL）模式和用于耳机驱动的立体声单端（SE）模式组合到一个芯片中，在该芯片中，SE/BTL输入控制管脚信号很容易切换这两种模式。CXAR41105能够在5V时将2.8W驱动到4W扬声器。当PO=2.8W，VDD=5V时，在RL=4W时，效率可达到85%。CXAR41105可将5V时的60mW功率驱动至32W耳机。
·工作电压：3.3V-5.5V
·在功率为2.8W，扬声器功率为4W，VDD=5V时，效率高达85%
·无滤波器D类放大器
·低关机电流-VDD=5V时，I DD=1mA
·64步音量可调
-80分贝至+20分贝的直流电压（带滞后）
·AGC（无夹）功能
·欠压保护功能
·THD+N=1%BTL模式下的输出功率
-VDD=5V时为2.25W，RL=4W-
VDD=5V时为1.3W，RL=8W SE模式
-VDD=5V时68mW，THD+N=10%时RL=32W输出功率
-VDD=5V时为2.8W，RL=4W
-VDD=5V时为1.6W，RL=8W
·所需外部组件更少
·允许两种输出模式，由SE/BTL引脚选择BTL和SE模式
·自动恢复的热保护和过电流保护
·功率增强包SSOP-24和SSOP-24P
·提供无铅和绿色设备

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXAR41105 is a stereo, high efficiency, filter-free ClassD audio amplifier available in SSOP-24 and SSOP-24P packages. The CXAR41105 provides the precise DC volume control, and the gain range is from -80dB (VVOLUME=0V) to +20dB (VVOLUME =5V) with 64 steps precise control. It’s easy to get the suitable amplifier’s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared to the traditional Class-D audio amplifier, and reduces the external component counts and the components high, it could save the PCB space, system cost, simplifies the design and the power loss at filter. CXAR41105 provides an AGC (Non-Clip) function, and this function can low down the dynamic range for large input signal. CXAR41105can provide from 20dB to -80dB with 64 steps gain decrease for non-clipping function, and this function can avoid output signal clipping. The CXAR41105also integrates the de-pop circuitry that reduces the pops and click noises during power on/off or shutdown enable process. The CXAR41105has build-in over-current and thermal protection that prevent the chip being destroyed by shortcircuit or over-temperature situation. CXAR41105combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal. CXAR41105is capable of driving 2.8W at 5V into 4W speaker. The efficiency can archived 85% at RL =4W when PO =2.8W at VDD=5V. CXAR41105is capable of driving 60mW at 5V into 32W headphone.

   产品特点 返回TOP

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· Operating Voltage: 3.3V-5.5V 

· High Efficiency 85% at PO =2.8W, 4W Speaker, VDD =5V 

· Filter-Free Class-D Amplifier 

· Low Shutdown Current - I DD =1mA at VDD =5V 

· 64 Steps Volume Adjustable from 

-80dB to +20dB by DC Voltage with Hysteresis 

· AGC(Non-Clip)Function 

· Under-Voltage Protection Function 

· Output Power at THD+N=1% BTL Mode 

- 2.25W at VDD =5V, RL =4W -

 1.3W at VDD =5V, RL =8W SE Mode 

- 68mW at VDD =5V, RL =32W Output Power at THD+N=10% 

- 2.8W at VDD =5V, RL =4W 

- 1.6W at VDD =5V, RL =8W 

· Less External Components Required 

· Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL Pin 

· Thermal and Over-Current Protections with AutoRecovery 

· Power Enhanced Packages SSOP-24 and SSOP-24P 

· Lead Free and Green Devices Available (RoHS Compliant)

   应用范围 返回TOP

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· LCD TVs 

· DVD Player 

· Active Speakers

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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Audio Products > Speaker Amplifier
Part_No	Package	Cla -ss	VDD  Voltage (V)		IDD, Supply Current (mA)	TSTAR -UP  (uS)	Out. Pow.  RL =4(W)	Output Power RL=8W (W)	Head- phon  Mode  Output Powe  RL=32W(mW)	Total  Harm. Dist.  Plus  Noise (%)	Pow. Sup. Rej. Ratio dB	Output Noise (uV)	Sign. to  nois Ratio dB	Output Offset Voltage (mV)	Digit. Input	Head phone	AGC Pow.  limit	Mute
			min	max
CXAR4183	SOP-8	AB	3	5.5	1	0.4	1.5	0.9	NA	0.15	74	28	NA	20	N	N	N	N
CXAR4184	MSOP8/P/ TDFN3x3-8	AB	2	5.5	3	0.1	2.1	1.3	NA	0.05	80	15	105	5	N	N	N	N
CXAR4185/A	WLCSP1.5 x1.5-9A TDFN3x3-8 DFN3x3-8	D	2	5.5	2	NA	2.45	1.45	NA	0.1	80	100	90	25	N	N	N	N
CXAR4185B	WLCSP1.5 x1.5-9A	D	2	5.5	2	NA	2.45	1.45	NA	0.1	80	100	90	25	N	N	N	N
CXAR4186/A	WLCSP1.5 x1.5-9A TDFN3x3-8	D	2	5.5	3	NA	2.2	1.3	NA	0.05	70	100	89	20	N	N	N	N
CXAR4187	WLCSP1.2 x1.2-9 TDFN3x3-8	D	2	5.5	2	0	2.45	1.3	NA	0.1	75	55	90	1	N	N	N	N
CXAR4188	WLCSP1.5 x2-12 TQFN4x4-16	G	3	5.2	4	0.6	3.6	2	N/A	0.06	70	49	97.5	2	N	N	N	N
CXAR4189/A	TSSOP24P TSSOP20P TQFN3x2-16	AB	3	5.5	6	NA	1.7	1.1	90	0.04	85	15	105	5	N	Y	N	N
CXAR4190/A	TQFN4x4-16 TQFN3x3-16	AB	3	5.5	6	0.7	2	1.3	52	0.06	61	22	93	10	N	Y	N	N
CXAR4191	TQFN5 x5-20A	AB	2	5.5	6	0.1	2.1	1.3	NA	0.05	80	15	105	5	N	N	N	N
CXAR4192	TQFN4x4-28	AB	5	5.5	18	NA	1.9	1.2	120	0.15	70	80	90	10	N	Y	N	N
CXAR4193	TSSOP-28P TQFN5x5-28	AB	5	5.5	18	NA	1.9	1.2	120	0.15	70	80	90	10	N	Y	N	N
CXAR4194	TQFN5 x5-32A	AB	5	5.5	9	0	1.9	1.3	120	0.07	75	22	100	5	N	Y	N	N
CXAR4195	TQFN5 x5-32	AB	5	5.5	9	0	1.9	1.3	120	0.07	75	22	100	5	N	Y	N	N
CXAR4196	TQFN5 x5-32A	AB	5	5.5	9	0	1.9	1.3	120	0.07	75	22	100	5	N	Y	N	N
CXAR4197	SOP-16P	AB	5	5.5	9	1	1.8	1.3	95	0.07	60	20	95	5	N	Y	N	N
CXAR4198	DIP16/A	AB	5	5.5	9	NA	2	1.3	95	0.07	60	20	95	5	N	Y	N	N
CXAR4199	DIP16/A	AB	5	5.5	9	NA	2	1.3	95	0.07	60	20	95	5	N	Y	N	N
CXAR41100	DIP16/A	AB	3	5.5	9	1.6	2	1.3	95	0.09	60	20	95	5	N	Y	N	N
CXAR41101/A	TSSOP-24P	AB	5	5.5	14	NA	1.9	1.1	90	0.05	60	20	95	5	N	Y	N	N
CXAR41102	TQFN3x3-16	D	2	5.5	3	0	2.3	1.34	NA	0.15	74	100	85	5	N	N	N	N
CXAR41103	SOP-16P	D	3	5.5	8	1.6	2.4	1.4	NA	0.1	55	75	90	20	N	N	N	Y
CXAR41103A	SOP-24 DIP-24 QFN4x4-20A	D	3	5.5	7	1.6	2.2	1.3	60	0.1	70	75	82.5	5	N	Y	A	Y
CXAR41103B	SOP-16 QDN4x4-20A	D	3	5.5	8	1.6	2.4	1.1	NA	0.1	70	75	85	10	N	N	A	Y
CXAR41103C	SSOP24/ QFN4x4-20A	D	3	5.8	8	1.4	2.4	1.7	70	0.1	80	50	92	5	N	Y	A	Y
CXAR41104	SSOP24/P SOP-18 QFN4x4-20A	D	3	5.5	5	1.2	2.3	1.3	NA	0.1	70	80	85	20	N	N	A	Y
CXAR41105	SSOP-24/P	D	3	5.5	5	1.2	2.25	1.3	68	0.06	60	80	78	20	N	Y	A	Y
CXAR41106	TQFN5x5-32	D	8	17	18	1	NA	12	NA	0.07	65	230	NA	20	N	N	N	Y
CXAR41107	TSSOP28P QFN4x4-28	D	8	26	20	0	NA	7	NA	0.1	NA	120	95	15	N	N	P	N
CXAR41107A	TSSOP28P QFN4x4-28	D	8	26	20	0	NA	8	NA	0.1	NA	120	95	15	N	N	P	N
CXAR41108	TSSOP28P QFN4x4-28	D	8	26	20	0	NA	12	0.1	NA	65	120	95	15	N	N	P	N
CXAR41109	QFN5.2 x6.2-32	D	8	17	18	1	NA	14	NA	0.05	65	250	NA	20	N	N	N	Y
CXAR41110	TSSOP28P QFN4x4-28	D	8	26	20	0	NA	15	NA	0.1	65	160	95	15	N	N	P	N
CXAR41111	TSSOP28P QFN4x4-28B	D	5	22	17	0	NA	15	NA	0.05	65	130	95	5	N	N	P	N
CXAR41112	TSSOP28P QFN4x4-28B	D	5	26	17	0	NA	17	NA	0.05	70	120	95	5	N	N	P	N
CXAR41113	TQFN7 x7-48/P	D	9	14	20	NA	NA	7.5	NA	0.2	85	250	85	20	N	N	N	N
CXAR41114/A	SOP8/P MSOP8P	AB	3	5.5	7	0.4	2.3	1.3	NA	0.04	60	28	NA	NA	N	N	N	N